CODE OF TESTS - Wabtec Corporationtechinfo.wabtec.com/DataFiles/Leaflets/Test Code 5039-19, S.2.pdf · CODE OF TESTS 5039-19, S.2 ... and pulling the lever directly opens and closes

CODE OF TESTS5039-19, S.25039-19, S.25039-19, S.25039-19, S.25039-19, S.2

CODE OF TESTS5039-19, S.25039-19, S.25039-19, S.25039-19, S.25039-19, S.2

APRIL 2007(SUPERSEDES ALL PREVIOUS ISSUES OF 5039-19, S.2)

Freight Air Brake Control Valve Portions:ABDX, ABDXL, ABDX-R, ABDXL-R, ABDX-SS

© 1999 WABCO Freight Car Products. A Wabtec Corporation

5039-19, S.2

Code of Tests

April 2007 Page 2 of 54

1.0 SCOPE

This manual is intended to cover only the testing of ABDX, ABDX-R Service Portions and ABDX, ABDX-R, ABDXL,ABDXL-R Emergency Portions and Maintenance of the “AB” Test Rack, as approved by the Association of AmericanRailroads for use by Certified Air Brake Shops.

Table of Contents

1.0 SCOPE ............................................................................................................................................................... 2

2.0 THE AB TEST RACK ....................................................................................................................................... 62.1 General Description and Accessories....................................................................................................... 62.2 General Description of Electronic Accessories ......................................................................................... 72.3 Description of Cocks ................................................................................................................................ 72.4 Quick Opening Diaphragm Cock ............................................................................................................ 102.5 Flowrator Meter ...................................................................................................................................... 102.6 Mechanical Manometer .......................................................................................................................... 112.7 Safety Procedures and Warnings ........................................................................................................... 11

3.0 LEVER TEST RACK MAINTENANCE ........................................................................................................ 123.1 Mechanical Manometer .......................................................................................................................... 123.2 Quick Opening Diaphragm Cock (Manual Lever Type) ............................................................................ 133.3 Quick Opening Diaphragm Cock (Push Button Type) ............................................................................. 133.4 Electronic Calibration Switch ................................................................................................................. 133.5 3 PSI Mechanical Pressure Switches .................................................................................................... 133.6 Tuning Chokes ....................................................................................................................................... 133.7 Cleaning and Lubrication ........................................................................................................................ 13

4.0 TESTING THE LEVER RACK ...................................................................................................................... 144.1 General Requirements ........................................................................................................................... 144.2 Leakage ................................................................................................................................................. 144.3 Air Gauges ............................................................................................................................................ 164.4 Capacity ................................................................................................................................................ 164.5 Cocks 4A, 6A, 13A, 15A & 19A on Push Button Rack ........................................................................... 204.6 Mechanical Manometer .......................................................................................................................... 244.7 Mechanical Pressure Switch Calibration ................................................................................................ 24

5.0 CODE OF TESTS ........................................................................................................................................... 245.1 General Requirements ........................................................................................................................... 24

6.0 ABDX AND ABDX-R CONTROL VALVE SERVICE PORTION (AB TEST RACK) .............................. 246.1 Drawings and Other Information ............................................................................................................. 246.2 Test Equipment Requirements ............................................................................................................... 256.3 Test Procedure Requirements ................................................................................................................ 266.4 Specification Compliance ....................................................................................................................... 266.5 Test Set-Up ............................................................................................................................................ 266.6 Leakage ................................................................................................................................................. 266.7 Function and Capacity ........................................................................................................................... 306.8 Final Leakage ........................................................................................................................................ 356.9 Completion of Test ................................................................................................................................. 36

5039-19, S.2

Code of Tests

Page 3 of 54 April 2007

7.0 TEST FOR ABDX, ABDXL, ABDX-R AND ABDXL-R EMERGENCY PORTIONS (AB TEST RACK) .. 377.1 Drawings and Other Information ............................................................................................................. 377.2 Test Equipment Requirements ............................................................................................................... 377.3 Test Procedure Requirements ................................................................................................................ 387.4 Specification Compliance ....................................................................................................................... 387.5 Test Set-Up ............................................................................................................................................ 387.6 Leakage ................................................................................................................................................. 397.7 Charging ................................................................................................................................................ 427.7.1 Initial conditions: .................................................................................................................................... 427.7.2 Quick Action Chamber. .......................................................................................................................... 427.7.3 Service application. ................................................................................................................................ 427.7.4 A.A.V. Function (Stability) ...................................................................................................................... 437.7.5 Service Stability ..................................................................................................................................... 447.7.6 Emergency Sensitivity ........................................................................................................................... 447.7.7 High Pressure Valve and Inshot Valve..................................................................................................... 457.7.8 Emergency Accelerated Release Position .............................................................................................. 467.7.9 Quick Action Chamber Blowdown, Service Inshot and Final Leakage ..................................................... 477.7.10 Completion of Test ............................................................................................................................... 48

8.0 DIAGRAMMATICS ............................................................................................................................... 49

List of Figures

Figure 1 - AB Test Rack Equipped with Mechanical Manometer ...................................................................................... 4Figure 2 - Semi Automatic Push Button AB Test Rack .................................................................................................... 5Figure 3 - Accessories used with AB Test Rack .............................................................................................................. 8Figure 4 - Electronic Accessories used with AB Test Rack .............................................................................................. 9Figure 5 - Quick Diaphragm Cock with Lever Type Handle ............................................................................................. 10Figure 6 - Cylinder Actuated Diaphragm Cock ............................................................................................................... 10Figure 7 - FLOWRATOR Meter for Leakage Tests ......................................................................................................... 10Figure 8 - Manometers .................................................................................................................................................. 11Figure 9 - Addition of Electronic Accessories to AB Test Rack ...................................................................................... 23Figure 10 - ABDX Service Valve with NEW Standard SAR Valve Assembly .................................................................... 25Figure 11 - ABDX Service Valve with Old Standard SAR Valve Assembly ....................................................................... 25Figure 12 - Special Plunger for AB - 2 Test Plate ........................................................................................................... 36Figure 13 - Integral Vent Protector ................................................................................................................................. 37Plate 1 - Test Rack Diagrammatic Piping Arrangement with View of the ABDX Type Service Portion.............................. 49Plate 2 - Test Rack Diagrammatic Piping Arrangement with View of the ABDX Type Emergency Portion ....................... 50Plate 3 - ABDX Control Valve Diagrammatic .................................................................................................................. 51Plate 4 - Test Rack Diag. Piping Arrangement with View of the ABDX Service Portion (Configure Control “C”) ................ 52Plate 5 - Test Rack Diag. Piping Arrangement with View of the ABDX EmergencyPortion (Configure Control “C”) ........... 53Plate 6 - ABDX Control Valve Diagrammatic (Configure Control “C”) ............................................................................... 54

5039-19, S.2

Code of Tests


Figure 1 - AB Test Rack Equipped with Mechanical Manometer

5039-19, S.2

Code of Tests


Figure 2 - Semi Automatic Push Button AB Test Rack

5039-19, S.2

Code of Tests


2.0 THE AB TEST RACK

2.1 General Description and Accessories

2.1.1 To obtain the best results in air brake operations, it is essential that the unit devices comprising the completeequipment be maintained in the state of highest practical efficiency.

2.1.2 Due to the fact that there exists two versions of the AB Test Rack, one test code should be universal for both.The Manual Lever AB Test Rack, See Figure 1, uses a lever that is connected to the diaphragm cock. Manually pushingand pulling the lever directly opens and closes the diaphragm cock.

On the Semi-Automatic Pushbutton AB Test Rack, See Figure 2, pushing a button in turn activates a solenoid, which in turnactivates a cylinder that is connected to the diaphragm cock. The operator indirectly opens and closes the diaphragm cockby activating or deactivating a button.

This test code is written for a manual lever test rack, where the cocks are directly opened and closed. When using apushbutton test rack, remember that a button has to be manually activated. Therefore, when the code reads:

Open cock “x” it also means Activate Button “x”Close cock “x” it also means Deactivate Button “x”

NOTE: The button on the control stand will be illuminated when the button is activated, meaning the cock is open. Thebutton is not illuminated when the button is deactivated, meaning the cock is closed.

“A” HandleThe “A” Handle has been redesigned so that it can now be operated using buttons as well. There is a series of eight valveswith different sized chokes and orifices, interlinked to perform the same operation as the “A” Handle. There are eight BLUEbuttons, numbered 1 through 8, to simulate the eight positions for the old handle. Therefore, when the test code reads:

Move “A” handle to position “y” it also means Press the BLUE Button “y”

The pushbutton racks include three separate programs for operating the “A” buttons. These programs are for lapping theslide valves during the tests, and for a continuous lapping program.

The programs are activated by pressing the “P” button and the corresponding “A” number:P1: Cycles between position 3 and 5, five times and then leaves button 8 activated. This program is for the

Emergency portion.P1-2: Cycles between position 1 and 8, five times and then leaves button 8 activated. This program is for the

Service portion.P2: This continually cycles between position 1 and 8. This is for the service portion to lap the slide valve

into place.

Partially Open CocksOn the Lever test racks there is a part of the code that requires the operator to open a cock handle only part of the way. Alarge disadvantage to this is determining where is the correct “partially open” spot. Any part in the code that calls to partiallyopen a cock is now done with the orange buttons that are marked with a # and the letter A beside them. These buttons aremomentary, which means that they have to be pushed and held to keep them activated. Therefore, when the code reads:

Partially open cock “z” it also means Press and Hold button “z”A

2.1.3 The test rack is employed for the purpose of determining promptly and accurately, whether the valves are up toproper standard of workmanship and general condition and if not, where they deviate from the standard.

5039-19, S.2

Code of Tests


2.1.4 The following standard accessories are illustrated in Figure 3:1. Blanking Plate for testing the test rack, Part No. 525620 (TA-2300-C)2. Pipe Bracket Gasket, Part No. 96715 (TA-1301)3. A flange, for use when making hydrostatic tests on the two compartment reservoir, where required by law,

Part No. 96898 (TA-1264)4. ABD-1 Test Plate, Part No. 569058 (TA-2972-C)5. Service Portion Gasket, Part No. 525669 (TA-1302-A)6. AB-2 Test Plate, Part No. 500895 (TA-1479-C)7. ABD-1 Test Plate for Emergency Portions8. Emergency Portion Gasket, Part No. 96717 (TA-1300)9. Cocks E, F and G test plate assembly for testing ABDX type emergency valves

10. Cocks E, F and G test plate assembly for testing ABDX type emergency valves for Semi-Automatic Pushbutton Test Rack

2.2 General Description of Electronic Accessories

2.2.1 An emergency valve’s response time to an emergency rate of brake pipe reduction is recorded in the emergencyresponse test. Cock 23, using the test rack devices as shown in Figure 4, measures response time in order to insure a levelof sensitivity/stability for ABDX type and stabilized valves. Two types of pressure switches are used in conjunction with a timerenclosed in a switch box for measurement of this response time. The switch box/timer allows the test rack operator toconveniently change the timer to a CALIBRATION mode for checking various choke capacities during test rack qualification, aTEST mode for measurement of emergency valve response time during valve testing and a FOOT mode, which is connected toa foot switch, allowing the timer to function as a foot controlled stop watch that frees up the rack operators hands for otherduties. The battery pull-up circuit has been added to enhance the timer response. The battery pull-up circuit has a battery testfeature which must be checked periodically. Three AA alkaline batteries must be replaced as required.

2.2.2 The following electronic accessories are illustrated in Figure 4:1. Electronic Calibration Pressure Switch. ITT Model 800P 4S9 or equivalent.2. Switch box/timer with battery pull-up circuit. (Obsolete)3. Switch box/timer: 120V kit - Part No. 310022, 12V kit - Part No. 3100234. Cock 23 including 3 psi mechanical pressure switch (Barksdale Model 96210-bb1) and choke assembly.5. Cock 23 including 3 psi mechanical pressure switch (Barksdale Model 96210-bb1) and choke assembly for pushbutton

rack only.6. Special vent valve leakage test fitting including 3 psi mechanical pressure switch (Barksdale Model 96210-bb1) for

Emergency Portions with external threaded vent protectors.7. Special vent valve leakage test fitting including 3 psi mechanical pressure switch (Barksdale Model 96210-bb1) for

Emergency Portions with internal vent protectors (Figure 13).8. Special vent valve leakage test fitting including 3 psi mechanical pressure switch (Barksdale Model 96210-bb1)

for pushbutton rack only.9. Foot switch. LINEMASTER SWITCH CORPORATION Model 632D or equivalent.

2.3 Description of CocksCock 1 3/4” Brake Pipe Cut-Out CockCock 2 3/4” Auxiliary Reservoir Cut-Out CockCock 3 3/4” Brake Cylinder Cut-Out CockCock 4 3/8” Brake Cylinder Vent CockCock 5 3/4” Emergency Reservoir Cut-Out CockCock 6 3/8” Emergency Reservoir Vent CockCock 7 3/8” Aux. Res. Vent Cock with No. 63 Drill

(.037”) ChokeCock 8 3/8” Exhaust CockCock 9 3/8” By-Pass Cock, Main Res. to Emer. Res.

Cock 11 3/8” Brake Cylinder Res. Cut-Out CockCock 12 3/8” Brake Cylinder Vent CockCock 13 3/8” By-Pass Cock, Main Res. to Brake

CylinderCock 14 1/2” By-Pass Cock with No. 50 Drill (.070")

Choke, Main Reservoir to Auxiliary Reservoir

Cock 15 3/8” Quick Action Chamber Vent CockCock 16 3/8” By-Pass Cock, Brake Pipe Reservoir to

Auxiliary ReservoirCock 17 3/8” By-Pass Cock, with 3/16” (.1875") Choke

Auxiliary Reservoir to Brake CylinderCock 18 3/8” Aux. Res. Vent Cock with No. 73 Drill

(.0240”) ChokeCock 19 3/8” By-Pass Cock, Aux. Res. to Q.A. Cham.Cock 20 3/8” Quick Action Chamber Cut-Out CockCock 21 1/4” Vent ValveCock 22 3/8” Brake Pipe Vent Cock, Part No. 538969

3/8” Choke Plug (No. 30 Drill), Part No. 546146, located in downstream opening of cock 22

Cock 23 3/8” BP Vent Cock Part No. 538969 No. 29 Drill Choke (See Figure 4, Items 4-5)

Cock E,F,G 1/4” BP Vent Cock. (See Figure 3, Items 9-10)

, Part No. 305342

5039-19, S.2

Code of Tests


12

3

4

5

6 7

8

910

(Pushbutton Rack Only)

Figure 3 - Accessories used with AB Test Rack

5039-19, S.2

Code of Tests


Figure 4 - Electronic Accessories used with AB Test Rack

1

2(Obsolete)

3

4 5(Pushbutton Rack Only)

6

98 (Pushbutton Rack Only)

7

5039-19, S.2

Code of Tests


2.4 Quick Opening Diaphragm Cock

2.4.1 The distinctive features of the diaphragm cock, illustrated in Figure 5, are: (a) the quick opening lever type handle,the radial position of which is adjustable to any angle, and (b) controlled diaphragm deflection, by means of an adjustmentwhich regulates the amount of travel of the parts transmitting handle movement to the diaphragm.

2.4.2 On the pushbutton test rack, the lever type handle was replaced with a cylinder, as shown in Figure 6. Thiseliminates the need for radial adjustment due to the fact that the cylinder is positive acting directly on the diaphragm cock.Operator variation is eliminated by a constant closure rate of the diaphragm cocks. The cylinder is indirectly activated witha button.

2.5 Flowrator Meter

2.5.1 The FLOWRATOR Meter, as illustrated in Figure 7, is an instrument to provide a means of observing and determiningquickly and accurately the permissible leakage on air brake devices. It consists of a float or indicator enclosed with aprecision ground tapered glass tube and the flow of air to be measured is admitted to the bottom of the tube. The rate offlow is then measured direct by the height to which the air causes the float to rise in the tube. A graduated scale indicatesthis rate of flow in cubic-inches of free air per minute. By observing the figure at which the float balances in a stationaryposition, the rate of flow can be determined instantly.

Figure 5 -Quick Diaphragm Cock with

Lever Type Handle

Figure 7 -FLOWRATOR Meterfor Leakage Tests

Figure 6 -Cylinder ActuatedDiaphragm Cock

5039-19, S.2

Code of Tests


2.6 Mechanical Manometer

2.6.1 The mechanical manometer is a diaphragm type device used to determine small pressure differential readings.The manometer dial is graduated to read in pounds per square inch (psi). See Figure 8.

2.6.2 Valve “B” position

2.6.2.1 “Cut-In” Position (To Right for rotary valve type, or Pulled Out for spool valve type, or Button “B” Activated forpushbutton type): Connects manometer to auxiliary and brake pipe reservoirs.

2.6.2.2 “Cut-Out” Position (To Left for rotary valve type, or Pushed In for spool valve type, or Button “B” Deactivated forpushbutton type): Connects manometer to atmosphere.

2.7 Safety Procedures and Warnings

General shop safety procedures must be followed when performing these specification instructions.

The work area should be clean and free of debris.

Before applying portion to be tested, a visual inspection should be performed to assure integrity of valve coversand castings, mounting hardware, etc. Application of a damaged or partially assembled valve portion to thetest rack may result in personal injury.

Due to the possibility of exhausting air and high decibel levels of noise associated with it from the deviceduring testing; it is recommended that sufficient hearing and eye protection be used. This will minimize thepossibilities of hearing and eye injury to the operator or persons near the test rack.

StandardMechanical Manometer

Part No. 660020

Alternate StandardMechanical Manometer

Part No. 561397

Figure 8 - Manometers

5039-19, S.2

Code of Tests


The following statements of warning apply all or in part wherever the symbol appears in the maintenanceprocedures.

Failure to observe these precautions may result in serious injury to those performing the work and/or thebystanders.

• Before starting the test, make certain that all test equipment and the device to be tested are fastened and/or connected securely to minimize the possibility of personal injury from parts that may be “BLOWN” from thetest arrangement when air is admitted to the test rack.

• Before starting the test, make certain that the cap screws and pipe plugs are fastened securely to minimizethe possibility of personal injury from parts that may be “BLOWN” from the test arrangement when air isadmitted to the test rack downstream of the leakage or capacity reservoir.

• Air will vent from specific cock openings or ports when certain test arrangement cocks are opened orvalves operated. To minimize the possibility of personal injury from the effects of venting pressurized air, makecertain that all persons stand clear of the exhaust stream.

• As required during any of the following tests, pipe plugs must all be carefully loosened before they areremoved in order to minimize the possibility of personal injury from the effects of residual, pressurized air thatmay be in the test arrangement.

• Before continuing the test, make certain that all test equipment and the device to be tested are fastenedand/or connected securely to minimize the possibility of personal injury from parts that may be “BLOWN” fromthe test arrangement when air is admitted to the test rack.

• To minimize the possibility of electrical shock and bodily injury, prior to making any electrical connectionsor disconnections, make certain that all electrical power switches are in the “off” position.

• Air will vent from the test rack during completion of testing. To minimize the possibility of personal injuryfrom the effects of venting pressurized air, make certain that all persons stand clear of the exhaust stream.

• The test equipment used to connect the device to the test rack must be carefully loosened before they areremoved in order to minimize the possibility of personal injury from the effects of residual pressurized air thatmay be in the device.

3.0 LEVER TEST RACK MAINTENANCE

To secure reliable and uniform results with the AB Test Rack, it must be tested as often as required but not less frequently thanevery 30 days to keep the rack accurate and free from leakage. Each test rack must be tagged, stenciled or suitably loggednoting the most recent test date. Leakage tests must be made for valve “A”, valve “B”, and diaphragm cocks (lever or pushbutton)and any leakage discovered must be corrected before valves are tested. Air gauges must be maintained in a condition to assureaccurate registration within ranges of pressure which they are used and must be sensitive to slight variations of pressure.Strainer and/or filter must be cleaned as conditions require, but not less frequently than once each year.


3.1.1 A calibration check on the mechanical manometer, as described in paragraph 4.6, must be made as often asnecessary to assure proper calibration but not less frequently than once every six months.

3.1.2 Once each year, or as often as necessary, the mechanical manometer must be removed from the AB Test Rack,cleaned and calibrated by comparison with a calibration device traceable to the national standard or accepted industrialstandard.

5039-19, S.2

Code of Tests


3.2 Quick Opening Diaphragm Cock (Manual Lever Type)

3.2.1 To adjust the diaphragm tension (or deflection), loosen the cap screw which serves to clamp the split coupling onthe threaded portion of the cover and screw down or back off the coupling to increase or decrease the diaphragm deflectionuntil the force imparted to the diaphragm by the cam portion of the handle (through the medium of plunger and disc) is justsufficient to prevent leakage past the diaphragm with the handle in closed position.

3.2.2 The clamping screw should be tightened when the desired tension on the diaphragm is obtained. The handleposition can then be adjusted to the desired angle by loosening three set screws in the handle fulcrum and rotating handleand fulcrum around the clamped coupling. The three set screws must be retightened to hold the handle in place and topermit operation of the diaphragm.

3.2.3 When the test rack is not in use, all diaphragm cocks should be open. This practice will prolong the life of thediaphragm by preventing permanent set as the diaphragm is in normal position with the cock open.

3.3 Quick Opening Diaphragm Cock (Pushbutton Type)

3.3.1 There is no need to adjust diaphragm tension or depletion due to the cylinder acting directly on the diaphragm.

3.4 Electronic Calibration Switch

3.4.1 The electronic pressure switch, ITT Model 800P 4S9, is used in the CALIBRATION mode. This device is a highlyaccurate, field adjustable pressure switch/pressure gauge. Its digital L.E.D. display facilitates exact control over theswitching circuitry and displays a gauge pressure to one tenth of a psi.

This level of performance and accuracy is required for valid and traceable valve testing. Substitutions for this device shallmeet or exceed specifications of this model although substitutions are not recommended by Wabtec Corporation. Calibrationof this pressure switch must be checked to ± .1 psi, annually or as frequently as necessary in order to maintain traceabilityto a national standard. Always follow manufacturers safety and operational instructions supplied with the unit.

3.5 3 PSI Mechanical Pressure Switches

3.5.1 In the TEST mode, two mechanical type pressure switches are used in conjunction with cock 23 and a specialvent valve leakage test fitting for emergency portion qualification in Section 7.0. These mechanical pressure switches areBARKSDALE Model 96210-bb1 or equivalent and are factory set at 3 psi on increasing pressure. Calibration of thesepressure switches must be checked annually or as frequently as necessary as described in Section 4.7 in order tomaintain proper operation.

3.6 Tuning Chokes

3.6.1 Due to the tolerance variations in the actual volumes of any individual test rack, it is necessary to accurately sizecertain chokes according to each individual test rack. This is done by blowing down the particular choke and comparingthe blowdown times as performed in Section 4.0. If necessary, the choke may need to be cleaned, peened or reamed toprovide the correct flow capacity.

3.6.2 In order to obtain the accuracy in capacity required for cocks 23, “E”, “F” and “G”, it is necessary to use the ITT800P electronic pressure switch as outlined in paragraph 2.2.1. This switch must be set to a window mode with pressuresettings as described in paragraph 4.4.4.2.

3.7 Cleaning and Lubrication

3.7.1 The greatest freedom from wear and leakage in the operating parts of the rack will be obtained by keeping themproperly lubricated. Rotary valves should be cleaned and lubricated at time of testing rack on a 30-day basis. If the valvesneed to be disassembled, cleaned and lubricated more often, leakage test should be made when this is done.

5039-19, S.2

Code of Tests


3.7.2 Spool valve type valve “B” requires no maintenance unless leakage is indicated, in which case, the spool valvestem and O-rings must be removed, cleaned, and O-rings replaced if necessary, then lubricated and reassembled into thevalve “B” body. The valve must then be tested for leakage according to paragraph 4.2.4.

4.0 TESTING THE LEVER RACK

4.1 General Requirements

4.1.1 When preparing to test the rack for leakage, secure the blanking plate, Part No. 525620 (TA-2300-C) furnishedwith the rack, to the rack pipe bracket.

4.1.2 In order to avoid the necessity of frequently removing the rack gauges for calibration, a new gauge fitting connectionis provided in the main reservoir line on all modern racks. This connection permits a master test gauge (known to becorrect) to be applied and a comparison to be made between the master gauge and the rack gauges by manipulation of theproper vent cock. Any rack gauge found to be out more than the limit specified in the air gauge test should be removed andrecalibrated or repaired when necessary. Since only one master or checking gauge is required for each test room, thismaster gauge is not furnished as a fundamental part of the rack, but is available as an accessory to the rack. The ITT 800Pelectronic pressure switch, with incorporated digital pressure readout, can be substituted for the master gauge.

4.1.3 Racks used for testing Emergency ABDX Portions must have AB Test Bracket modification installed betweenthe pipe bracket (on the rack) and the rear clamp. This modification incorporates cocks E, F and G as shown in Figure 3,Items 9 or 10.

4.1.4 All test plate(s) used on the racks must be cleaned thoroughly to remove dirt, scale, soap, grease, etc. which mayhave accumulated in the internal passages of the test plates. Test plates must be dry before reapplying to rack. Thisprocedure should be performed whenever rack is tested.

4.1.5 The internal passages of the test rack manifold must be wiped clean with a dry, clean rag (as far in the passagesas possible). This procedure should be performed whenever rack is tested.

4.2 Leakage

4.2.1 Initial Conditions:

4.2.1.1 Commence test with all cocks closed except the 1/4" key on the inlet side of the FLOWRATOR Meter, if used,which must remain open at all times, valve “A” handle in position No. 8 and valve “B” in “Cut-Out” position.

4.2.1.2 Drain residual air from rack by opening cocks 15, 19, 20, 1, 16, 2, 12, 3, 5 and 6. When air has drained, closecocks 15, 19, 20, 1, 16, 2, 12, 3, 5 and 6. Open the supply cock and adjust test rack feed valve to close at 100 psi.

4.2.2 VALVE “A” ROTARY VALVE

4.2.2.1 Coat the exhaust port of valve “A” with soap suds with valve “A” handle in position Nos. 8, 7, 6, 5 and 4. A 1/2"bubble is not less than 10 seconds is permitted for each respective position.

4.2.2.2 Move valve “A” handle in position No. 1 and charge B.P. VOL. GAUGE to 100 psi, then repeat the soap suds testat valve “A” exhaust port with valve “A” handle in position Nos. 1, 2 and 3. A 1/2" bubble in not less than 10 seconds ispermitted for each respective position.

4.2.2.3 Move valve “A” handle to position No. 5 and reduce B.P. VOL. GAUGE pressure to 78 psi, then return valve “A”handle to position No. 3. Allow 2 minutes for temperature effect, then observe B.P. VOL. GAUGE for 1 minute to detect anyrise or drop in pressure. No pressure rise or drop is permitted.

5039-19, S.2

Code of Tests


4.2.2.4 At completion of test move valve “A” handle to position No. 1.

4.2.3 DIAPHRAGM COCKS - CASTING AND DIAPHRAGM

4.2.3.1 In the subsequent tests of cocks, leakage found in tests 4.2.3.2, 4.2.3.3, 4.2.3.5 and 4.2.3.12 may also becaused by valve “B” rotary valve and for these four tests, a 1/2" bubble in not less than 10 seconds is permitted at theopening coated with soap suds. No leakage is permitted for the remaining cock tests. If leakage occurs remove diaphragmcover or cylinder to examine and replace any collapsed or cut diaphragms.

4.2.3.2 Cock 16 (also cock 24, if so equipped) - Open cocks 8 and 19. Coat cock 8 opening with soap suds.

4.2.3.3 Cock 14 - Open cock 2. Repeat the soap suds test at cock 8 opening.

4.2.3.4 Cock 19 - Close cocks 8 and 19 and open cocks 14, 15 and 16 and charge AUX. RES. GAUGE to 100 psi. Coatopening of cock 15 with soap suds.

4.2.3.5 Cock 2 - Close cocks 2, 15 and 16 and open cocks 8 and 19. Repeat the soap suds test at cock 8 opening. Closecock 8 and open cocks 2, 16 and 20.

4.2.3.6 Cock 13 - Open cocks 3 and 4. Coat cock 4 opening with soap suds.

4.2.3.7 Cock 17 - Open cock 11. Repeat the soap suds test at cock 4 opening.

4.2.3.8 Cock 11 - Close cock 11 and open cock 17. Repeat the soap suds test at cock 4 opening.

4.2.3.9 Cock 3 - Close cock 3 and open cock 13. Coat the opening of cock 4 with soap suds. Close cock 4 and open cock 3.

4.2.3.10 Cock 9 - Open cocks 5 and 6. Coat cock 6 opening with soap suds.

4.2.3.11 Cock 5 - Close cock 6, then open cock 9 and charge EMER. RES. GAUGE to 100 psi. Close cock 5 and opencock 6. Coat cock 6 opening with soap suds. Close cock 6 and open cock 5.

4.2.3.12 Cock 20 - Close cocks 2, 16 and 20 and open cock 8. Coat cock 8 opening with soap suds.

4.2.3.13 Cock 1, (also cock 25, if so equipped) - with cock 1 closed, carefully remove the yoke cover from the test rackpipe bracket or open cock “G” and note.

4.2.3.14 Pipe Bracket Opening or Cock “G” Opening - Soap Test - no leakage.

4.2.3.15 Replace the yoke cover and tighten to seal over the pipe bracket opening or close cock “G”.

4.2.3.16 Vent cocks - close cock 8 and open cocks 1, 2, 11, 16 and 20. Coat the openings of all vent cocks Nos. 4, 6,7, 8, 12, 15, 18, 22 and 23 with soap suds.

4.2.3.17 Soap entire cock “E”, “F” and “G” assembly - No leakage.

4.2.4 VALVE “B”

4.2.4.1 Manometer Line Test: To check Aux. to BP; Aux. to exhaust; and BP to exhaust.

4.2.4.2 Close all cocks except 2, 16 and the supply cock. With valve “A” handle in position No. 1, charge AUX. RES.GAUGE to 100 psi for 21/2 minutes.

5039-19, S.2

Code of Tests


4.2.4.3 Cut-in valve “B” handle. Move valve “A” handle into position No. 3. Close cocks 16 and 2.

4.2.4.4 Partly open cock 7 to generate approximately 3 psi differential. Close cock 7. Wait 90 seconds and then notemanometer reading. No change in indication in 30 seconds.

IF FAILURE: SOAP B.P. LINE, B.P. VOL. AND AUX. LINES AND RESERVOIRS ASSOCIATED. ALSO CHECKMANOMETER LINE AND SEALS ON MANOMETER. LOCATE and FIX SOURCE OF LEAKAGE.

4.2.4.5 Cut-Out valve “B” handle and open cocks 1, 2, 3, 5, 9, 11, 13, 14, 16, 17, 19 and 20. Move valve “A” handle intoposition No. 1

4.2.5 RESERVOIRS, PIPE FITTINGS AND COCK CONNECTIONS

4.2.5.1 Commence test with cocks 1, 2, 3, 5, 9, 11, 13, 14, 16, 17, 19 and 20 open, all others closed and valve “A” handlein position No. 1. With all reservoirs charged to 100 psi, close cocks 9, 13, 14, 16, 17, 19 and supply cock, then move valve“A” handle to position No. 3. Allow one minute for temperature effect, then observe the hands of all gauges for one minuteto detect any drop in pressure. No pressure drop is permitted.

4.2.5.2 If leakage is indicated, coat all pipe fittings, cock connections and reservoir fittings with soap suds to locate andfix source of leakage.

4.2.5.3 Close cocks 1, 2, 3, 5, 11 and 20 and again observe the hands of all gauges for one minute to detect a drop inpressure. No pressure drop is permitted.

4.3 Air Gauges

4.3.1 Commence test with all cocks closed, valve “A” handle in position No. 3 and valve “B” in “Cut-Out” position.

4.3.2 Move valve “A” handle to position No. 8, then, open cocks 12 and 13 and drain brake pipe and main reservoirs.Attach the master test gauge to MAIN RES. GAUGE connection. Close cock 12 and open the supply cock. Move valve “A”handle to position No. 1 and open cocks 1, 2, 3, 5, 9, 11, 14, 16, 17, 19 and 20 and charge entire test rack to 100 psi.

4.3.3 Note that each test rack gauge registers within 1/2 psi of the master gauge reading. Close the supply cock. Partlyopen cock 15 and reduce the test rack pressure in steps of 10 psi, and note after each step that the gauge hand registerswithin 1/2 psi of the master gauge hand between 100 and 10 psi, and 11/2 psi between 10 psi and zero psi.

4.3.4 Note also if there is any excessive friction in the gauge as pressure is being reduced, which will be indicated by thegauge hand jumping. Repair as necessary.

4.3.5 At completion of test, drain air from rack by opening cocks 12 and 15. Then remove the master gauge.

4.4 Capacity

Commence test with feed valve set at 80 psi, cocks 1, 2, 3, 5, 9, 11, 12, 13, 14, 15, 16, 17, 19 and 20 open, all other cocksclosed, valve “A” handle in position No. 1, valve “B” in “Cut-Out” position and test rack drained of all pressure.

4.4.1 VALVE “A” ROTARY VALVE

4.4.1.1 Move valve “A” handle to position No. 3. Close cocks 1, 12, 15 and 16, then open the supply cock. The orifices invalve “A” rotary valve must be checked to insure that they are within the limits specified for each respective position. Besure that pressures do not change for at least one minute before starting any of the following calibration tests.

5039-19, S.2

Code of Tests


4.4.1.2 Position No. 1 - 1/4" Drill Port (.25")

Move valve “A” handle to position No. 1 and charge B.P. VOL. GAUGE to 55 psi. Then move valve “A” handle to position No.3 lap. Note that B.P. VOL. GAUGE pressure charged at a rapid rate.


Move valve “A” handle to position No. 2 and note, B.P. VOL. GAUGE pressure must charge from 60 to 70 psi in 10 to 12seconds. Then move valve “A” handle to position No. 3 Lap.

4.4.1.4 Position No. 3 - Lap

Note that B.P. VOL. GAUGE pressure does not increase or decrease from 70 psi.


Move valve “A” handle to position No. 4 and note; B.P. VOL. GAUGE pressure must reduce from 70 to 50 psi in 20 to 25seconds. Move valve “A” handle to position No. 1 and charge B.P. VOL. GAUGE pressure to 80 psi then move valve “A”handle to position No. 3 lap.

4.4.1.6 Position No. 5 - No. 45 Drill Port (.082")

Move valve “A” handle to position No. 5 and note; B.P. VOL. GAUGE pressure must reduce from 70 to 40 psi in 33/4 to 43/4

seconds. Move valve “A” handle to position No. 1 and charge B.P. VOL. GAUGE to 80 psi. Then move valve “A” handle toposition No. 3 lap.


Move valve “A” handle to position No. 6 and note; B.P. VOL. GAUGE pressure must reduce from 80 to 10 psiin 91/2 to 101/2 seconds. Move valve “A” handle to position No. 1 and charge B.P. VOL. GAUGE pressure to 80psi. Then move handle “A” to position No. 3 lap.


Move valve “A” handle to position No. 7 and note; B.P. VOL. GAUGE pressure must reduce from 80 to 10 psi in 5.2 to 5.6seconds. Move valve “A” handle to position No. 1 and charge B.P. VOL. GAUGE pressure to 80 psi. Then move valve “A”handle to position No. 3 lap.


Move valve “A” handle to position No. 8 and note; B.P. VOL. GAUGE pressure must reduce from 80 to 10 psi in 11/2 to 21/4seconds.

4.4.1.10 At the completion of test move valve “A” handle to position No. 1.

4.4.2 AUXILIARY RESERVOIR COCKS WITH CHOKES

4.4.2.1 Close cocks 14 and 17. Partly open cock 15 and reduce AUX. RES. GAUGE to 60 psi, then close cocks 15 and19. Allow one minute for temperature effect.

5039-19, S.2

Code of Tests


4.4.2.2 Cock 7, No. 63 Drill Choke, (for test rack without Ring Leakage FLOWRATOR Meter) - Open cock 7 and notethat AUX. RES. GAUGE reduces from 60 to 47 psi in 55 to 62 seconds. Close cock 7, open cock 16 and charge AUX.RES. GAUGE to 80 psi for 2 minutes. Close cock 16.

4.4.2.3 Cock 7, choke plug capacity (for test rack with Ring Leakage FLOWRATOR Meter) - Open Cock 7 and notethat AUX. RES. GAUGE reduces from 60 to 40 psi in 14 to 16 seconds. Close cock 7. Open cocks 16 and charge AUX.RES. to 80 psi for 2 minutes. Close cock 16.

4.4.2.4 Cock 18, No. 73 Drill Choke - Open cock 18 and note that AUX. RES. GAUGE reduces from 80 - 77 psi in 25to 30 seconds. Close cock 18. Open cock 19 and partially open cock 15 reducing AUX. RES. GAUGE to 35 psi. Closecocks 19 and 15 and allow one minute for temperature effect.

4.4.2.5 Cock 14, No. 50 Drill Choke - Open cock 14 and note that AUX. RES. GAUGE charges from 45 to 55 psi in 9 to11 seconds.

4.4.3 Cock 22, No. 30 Drill Choke, used for Service Stability Test

4.4.3.1 Commence test with cocks 2, 3, 5, 9, 11, 13, 14 and 20 open, and all other cocks closed, valve “A” handle inposition No. 1 and valve “B” in “Cut-Out” position.

4.4.3.2 Close cocks 3, 5, 9, 11, 13 and 14, then open cocks 1, 16 and 19 and charge B.P. VOL., AUX. RES., Q.A. CH.GAUGES to 80 psi.

4.4.3.3 Allow two minutes for temperature effect, then move valve “A” handle to position No. 3. Quickly open cock 22 andnote that the pressure indicated on the B.P. VOL. GAUGE reduces from 80 to 30 psi in 31 to 32 seconds. Close cock 22.

4.4.3.4 NOTE: This test is based on a predetermined rate of brake pipe reduction which should be obtained if therecommended standard choke is used. If however, due to tolerance variation in reservoir volumes, deviation from the aboveblowdown time is encountered, it can and must be corrected by carefully increasing or decreasing the choke capacity asthe case may be. In all cases, the orifice face of the choke plug should be lapped smooth to produce a sharp leading edge.

4.4.4 Cock 23, No. 29 Drill Choke, used for Emergency Response Test

4.4.4.1 Close all cocks except cock 1 and supply cock. Set the timer switch to the CALIBRATION mode and S1 set totrigger in a window of 70 to 50 psi.

NOTE: Connect electronic pressure switch vertically, directly to and as close as practical to B.P. VOL. GAUGE fitting.

4.4.4.2 To insure that the ITT 800P is in the WINDOW mode, the default code must be checked. This is done by going intothe UTILITIES mode by pressing the UNLOCK button twice. The display should show “DEFS”. Then press the ENTERbutton. The default code that should be displayed is “0010”. If this is not correct, change the code by pressing the ENTERbutton until the digit blinking is the one to be altered. Press the UP or DOWN arrow keys to change the digit to the correctnumber. After this is complete, press ENTER until “DEFS” is displayed. Then press the LOCK button twice to return to theOPERATING mode.

4.4.4.3 The test rack operator qualifying the choke capacity for the test rack maintenance will be required to set theswitch’s pressure set points to that specified in Section 4.0. The set points are changed by pressing the UNLOCK buttononce. The display should read “PRO6”. Then press the upper row INCR button to display the high set point.

NOTE: This high setpoint must be 2.0 psi higher than the actual switching pressure specified. This is due to a 2 psideadband built into the ITT 800P. For example, if a trigger window of 70 to 50 psi is called for, the actual high setpointentered should be 72.0 psi and the lower setpoint should be entered as 50.0 psi.

5039-19, S.2

Code of Tests


If the high setpoint needs to be changed, press the ENTER button until the digit to be changed is blinking. Then press theUP or DOWN arrow keys to enter the correct digit. After the high setpoint is correct, repeat the procedure for the lowersetpoint by pressing the DECR button on the upper row. The lower setpoint should be displayed and is changed in thesame fashion by using the ENTER and UP/DOWN arrow keys. After the setpoints are corrected, press the LOCK buttonto return to the OPERATING mode for choke qualification. For more detailed instructions refer to the installation andoperation manual supplied with the ITT 800P pressure switch.

4.4.4.4 To check electronic switch operation, close all cocks except supply and cock 1. Set timer switch to CALIBRATIONmode. Charge B.P. VOL. GAUGE to a pressure at least 3 psi above the upper setpoint using valve “A” handle in positionNo. 1. Move valve “A” handle to position No. 4 and slowly decrease B.P. VOL. GAUGE. As the digital pressure readout onthe electronic switch passes the upper setpoint limit, the timer should start. As the readout passes the lower set point, thetimer should stop. If operation is inconsistent with this, inspect wiring, switch box/timer or electronic pressure switch forpossible defects.

4.4.4.5 Move valve “A” handle to position No. 1 and charge B.P. VOL. GAUGE to 80 psi for 21/2 minutes. Move valve “A”handle between Positions 2 and 4 until the digital gauge reads 80 psi ± 0.10 psi, then place valve “A” handle into positionNo. 3 and reset timer.

4.4.4.6 Quickly open cock 23 and hold handle fully open. Let B.P. VOL. GAUGE blowdown below 50 psi. The clock mustrecord a 70 - 50 psi time of between 1.06 and 1.08 seconds. Repeat 4.4.4.5 and 4.4.4.6 four times. The average of the lastthree recorded times should fall between 1.06 and 1.08 seconds. If this time does not fall between these limits, clean,ream or peen the No. 29 drill choke at cock 23 to match the choke to the B.P. VOL. GAUGE and then retest. Be sure tosoap choked union after reassembly to reassure no leakage.

4.4.5 COCKS “E”, “F” AND “G” CHOKES

4.4.5.1 With the electronic pressure switch connected, as in Figure 9, set the timer switch to the CALIBRATION positionand S1 set to trigger in a window of 80 to 70 psi, (actual setpoints of 82 and 70 as noted in paragraph 4.4.4.3) close allcocks except cock 1 and the supply cock. Move rotary valve to position No. 1 and readjust feed valve to 83 psi. ChargeB.P. VOL. GAUGE to 83 psi for 11/2 minutes.

4.4.5.2 Partly move valve “A” handle to position 4 and reduce B.P. VOL. GAUGE to between 80.1 and 80.2 psi. Maintainthis pressure for 1 minute by moving valve “A” handle between positions 2, 3 or 4 as necessary, then reset timer and movevalve “A” handle to position 3.

4.4.5.3 Cock “E”, No. 78 Drill Choke, used for AAV Function Test for ABDX, ABDX-R Valves

4.4.5.4 Open cock “E” and note.

4.4.5.5 The timer must record a blowdown of 34.0 to 35.0 seconds.

4.4.5.6 Close cock “E”.

4.4.5.7 Move rotary valve to position No. 1 and charge B.P. VOL. GAUGE to 83 psi for 11/2 minutes.

4.4.5.8 Partly move valve “A” handle to position 4 and reduce B.P. VOL. GAUGE to between 80.1 and 80.2 psi. Maintainthis pressure for 1 minute by moving valve “A” handle between positions 2, 3 or 4 as necessary, then reset timer and movevalve “A” handle to position 3.

4.4.5.9 Cock “F”, No. 77 Drill Choke Used for Preliminary Breather Function Test

4.4.5.10 Open cock “F” and note.

5039-19, S.2

Code of Tests


4.4.5.11 The timer must record a blowdown of 24.0 to 25.0 seconds.

4.4.5.12 Close cock “F”.

4.4.5.13 Move rotary valve to position No. 1 and charge B.P. VOL. GAUGE to 83 psi for 11/2 minutes.

4.4.5.14 Partly move valve “A” handle to position 4 and reduce B.P. VOL. GAUGE to between 80.1 and 80.2 psi.Maintain this pressure from 1 minute by moving valve “A” handle between positions 2, 3 or 4 as necessary, then reset timerand move valve “A” handle to position 3.

4.4.5.15 Cock “G”, No. 78 Drill Choke, used for AAV Function Test for ABDXL, ABDXL-R Valves

4.4.5.16 Open cock “G” and note.

4.4.5.17 The timer must record a blowdown time of 32.0 to 33.5 seconds.

4.4.5.18 Close cocks “G” and 1.

4.4.5.19 At the completion of all tests, move “A” handle to position No. 8, open cocks 15, 19, 16, 2, 6, 5 and drain allpressure. Close all cocks, then remove the test rack blanking plate.

NOTE: Section 4.5 applies to the Pushbutton AB Test Rack only. If AB Test Rack is a lever test rack proceed toSection 4.6.

4.5 Cocks 4A, 6A, 13A, 15A & 19A on Pushbutton Rack

4.5.1 Initial Conditions

4.5.1.1 All Buttons deactivated and the test rack supply cock open. Button A8 activated.

4.5.1.2 Feed Valve set such that the Master Gauge reads 100 psi.

4.5.2 13A Charge Time

4.5.2.1 Activate buttons 3 and 16.

4.5.2.2 Press and hold button 13a and note:

TEST4.5.2.2.1 B.C. RES. GAUGE – Increase from 10-60 psi in 8 to 9 seconds.

WARNING: AIR WILL VENT FROM COCK 4 WHEN IT IS ACTIVATED.

4.5.2.3 Activate button 4.

4.5.2.4 Allow B.C. RES. GAUGE to decrease to 0 psi and wait for 30 sec.

4.5.2.5 Deactivate button 4.

4.5.2.6 Adjust variable choke 13A to obtain the appropriate time.

5039-19, S.2

Code of Tests


4.5.3 15A Release Time.

4.5.3.1 Initial Conditions.

4.5.3.1.1 Buttons 3, 16 and A8 activated.


4.5.3.3 Activate button 20 and A1.

4.5.3.4 Press button 19A and allow Q.A. CHAMBER GAUGE to increase to 90 psi and maintain the pressure for 30sec. Buttons 15A and 19A may have to be used to accurately balance the pressure at 90 psi.

WARNING: AIR WILL VENT WHEN BUTTON 15A IT IS ACTIVATED.

4.5.3.5 Press and hold button 15A and note:

TEST4.5.3.5.1 Q.A. CH. GAUGE – Decrease from 90 – 10 psi in 2.5 to 3.5 seconds.


4.5.4 19A Charge Time.


4.5.4.1.1 Buttons 16 and 20 activated. Button A1 activated.

WARNING: AIR WILL VENT FROM COCK 15 WHEN IT IS ACTIVATED.

4.5.4.2 Activate button 15.

4.5.4.3 Allow Q.A. CH. GAUGE to decrease to 0 psi and wait for 30 sec.


4.5.4.5 Push and hold button 19A until the Q.A. CH. GAUGE reads 10 psi. Buttons 15A and 19A may have to beused to accurately balance the pressure at 10 psi. Maintain the pressure for 30 seconds.

4.5.4.6 Push and hold button 19A and note:

TEST4.5.4.6.1 Q.A. CH. GAUGE increase from 10-90 psi in 3.5 to 4.5 seconds.




4.5.5.1.1 Buttons 16, 20 and A1 activated.

4.5.5.2 Deactivate button 16 and 20.

5039-19, S.2

Code of Tests



4.5.5.3.1 Allow Q.A. RES. GAUGE to increase to 100 psi and wait for 30 seconds.


WARNING: Air will vent from cock 4A when it is activated.

4.5.5.5 Press button 4A to decrease B.C. RES. to 90 psi. Release button 4A. Button 13A and 4A may have to beused to accurately balance the B.C RES. pressure at 90 psi for 30 seconds.

4.5.5.6 Press and hold button 4A and note:

TEST4.5.5.6.1 B.C. RES. – Decrease from 90 – 40 psi in 5 to 6 seconds.


4.5.5.8 Activate button 4 and allow B.C RES. to go to 0 psi.

4.5.5.9 Deactivate buttons 3 and 4.



4.5.6.1.1 Button A1 activated.


4.5.6.2.1 Allow EMERG. RES. GAUGE to increase to 100 psi and wait for 30 sec.


WARNING: AIR WILL VENT WHEN BUTTON 6A IS ACTIVATED.

4.5.6.4 Press button 6A and decrease EMERG. RES. pressure to 90 psi. Release button 6A. Button 9 and 6A mayhave to be used to accurately balance the EMERG. RES. pressure at 90 psi for 30 seconds.

4.5.6.5 Pushbutton 6A and note:

TEST4.5.6.5.1 EMERG. RES. GAUGE – Decrease from 90 – 70 psi in 35 to 36 seconds.


4.5.6.7 Activate button 6 and allow EMERG. RES. GAUGE pressures go to 0 psi.

4.5.6.8 Activate buttons 19, 15 and A8.

4.5.6.9 Deactivate buttons 5, 6, 15 and 19.

4.5.6.10 Activate button A3.

5039-19, S.2

Code of Tests


Figure 9 - Addition of Electronic Accessories to AB Test Rack

5039-19, S.2

Code of Tests



4.6.1 Apply the AB-160 test plate, Part No. 564225 (TA-2942-C) to the face of the rack pipe bracket.

4.6.2 Open cocks 3, 16 and 13 and move valve “A” handle to position No. 1. Move valve “B” to “Cut-In” position and closecock 16. After one minute, note that the hand of the manometer indicates between 1.8 and 2.2 psi on its dial. If it does not,the manometer must be removed for recalibration.

4.6.3 At completion of this test, open cock 16 and move valve “B” to “Cut-Out” position. Then close cock 13, open cock4, and move valve “A” handle to position No. 8. Then close all cocks and remove the test plate.

4.7 Mechanical Pressure Switch Calibration

4.7.1 Disconnect wiring and unscrew both 3 psi mechanical pressure switches from the special vent valve leakage testfitting with pressure switch and cock 23 assembly.

4.7.2 Install switches into a regulated low pressure supply. Slowly increase pressure to the switches while monitoringthe continuity with a continuity tester.

4.7.2.1 The vent valve switch should show continuity between the purple (common) and blue wires (normally closed) untila nominal (21/2 to 31/2 psi) pressure is reached when continuity should be broken.

4.7.2.2 The cock 23 pressure switch should show no continuity at the purple (common) and red (normally open) wiresbelow the nominal 3 psi (21/2 to 31/2 psi) pressure and change to show continuity as pressure rises above the nominal 3 psi.

5.0 CODE OF TESTS

5.1 General Requirements

5.1.1 The following is a Code of Tests and Instructions for operating the “AB” Test Rack. The instructions are completefor each specified test without reference to any other test. The sequence of the tests, however, should be followed as given,in order that defects may be disclosed and corrected before making subsequent tests, which may be adversely affected bythe defects.

5.1.2 Valves must be within the limits of all tests prescribed in the code, to insure proper service operation. All testswhich require time limits must be timed with an approved timing device, or its equivalent, and be clearly visible for ease ofobservation.

6.0 ABDX AND ABDX-R CONTROL VALVE SERVICE PORTION (AB TEST RACK)

6.1 Drawings and Other Information

6.1.1 Diagrammatic view and arrangement of the AB Test Rack - Section 8, Plates 1 and 4.

6.1.2 The following can be tested according to this specification:

6.1.2.1 DESIGNATION Part No.ABDX SERVICE PORTION 592747ABDX SERVICE PORTION (Aluminum) 661525ABDX-R SERVICE PORTION 592747RABDX-SS SERVICE PORTION (Aluminum) 664743

NOTE: This test code requires the configuration letter of the portion being tested to be known. The portion configurationletter is indicated by the last digit of the serial number stamped on the name plate on of the valve. If there is no letter

5039-19, S.2

Code of Tests


following the serial number then treat it as configuration “A”. Configuration “C” service portions can also be identified by thelack of a SAR filling piece (Figure 10).

6.1.2.2 IMPORTANT: MAKE CERTAIN that the piece number of the device being tested is covered by this Test Specification.If the procedure DOES NOT APPLY to the piece number of the device being tested, the results obtained WILL NOT BECORRECT and the device WILL NOT BE SATISFACTORY for service.

6.1.3 IMPORTANT: This document may be revised at any time by the Wabtec Corporation to include changes in thetest procedure or values required for the device covered by this test specification to be satisfactory for the service intended.It is the responsibility of the owner/user of this product and the company/person making the necessary tests covering theoperation of this device to see to it that the latest issue of this test specification is being used. Consult your local WabtecCorporation representative or the offices at Wilmerding, PA, before using this document to assure that you have the latestrevision.

6.2 Test Equipment Requirements

6.2.1 IMPORTANT: The test rack used in making the following tests must meet the requirements in the current issueof Section 4 of Instruction Pamphlet No. 5039-19, Sup. 2.

6.2.2 ABD-1 Test Plate Complete, Part No. 569058 (Cock “C” must have No. 44 drill choke for 100 psi testing - Part No. 77439)

6.2.3 One Gasket, Part No. 525669

6.2.4 Three 5/8" Special Hex. Nuts, Part No. 548957

Figure 10 - ABDX Service Valve with NEW StandardSAR Valve Assembly (Configuration Control “C” on

Valve Nameplate)

Figure 11 - ABDX Service Valve with OLD StandardSAR Valve Assembly (Configuration Control “A” on

Valve Nameplate)

SAR CoverNo Filling Piece

Cover

Filling PieceAssembly

Nameplate

5039-19, S.2

Code of Tests


6.3 Test Procedure Requirements

6.3.1 Do not deviate from Test Specification.

6.3.2 Throughout this Specification, the ABDX or ABDX-R Control Valve Service Portion will be referred to as the “portion”.

6.3.3 When testing leakage with flowrator meter, press the hose nozzle of the flowrator meter against the openingspecified and note that the float does not rise higher than specified for each respective test.

6.3.4 IMPORTANT: Throughout this specification, valve “B” handle must always remain in the “Cut-Out” position unlessotherwise specified.

6.3.5 If in the following tests, it becomes necessary to remove any service portion cover due to leakage or other defects,it will be necessary to again coat the cover seal with soap suds after the valve is reassembled and the pressure restoredto detect any leakage that may have occurred.

6.4 Specification Compliance

IMPORTANT: The ABDX or ABDX-R Control Valve Service Portion being tested MUST meet ALL the requirements of thisspecification before being released for shipment.

6.5 Test Set-Up

6.5.1 CAUTION: BEFORE STARTING TEST, MAKE CERTAIN THAT AIR LINE CONNECTIONS, TEST PLATE ANDDEVICE TO BE TESTED ARE FASTENED SECURELY TO PREVENT POSSIBLE PERSONAL INJURY.

6.5.2 WARNING: AIR WILL VENT FROM THE RESPECTIVE COCK OR THE PORTION VENT VALVE DURINGOPERATIONS. CARE SHOULD BE EXERCISED SO THAT ALL LOOSE MATERIAL AND OR PERSONNEL ARE CLEAROF VENTING AIR DURING OPERATIONS.

6.5.3 Supply pressure must be maintained at 120 psi.

6.5.4 Using the gasket and the three 5/8" special hex. nuts, secure the portion to be tested to the ABD-1 Test Plate.

6.5.5 Move valve “A” handle to position No. 8.

6.5.6 Close all test rack and test plate cocks except the test rack supply cock.

6.5.7 Set the test rack feed valve such that the MAIN RES. GAUGE indication is 100 psi.

6.6 Leakage

6.6.1 Initial conditions:

6.6.1.1 All test rack and test plate cocks closed except the test rack supply cock.

6.6.1.2 Valve “A” handle in position No. 8.

NOTE: Sections 6.6.1.3 through 6.6.1.10 for configuration control letter “C” valves only to check for SAR kick-up spring.For ALL other configuration control valves, proceed to 6.6.1.11.

6.6.1.3 Open cocks 1, 2, 8 and 9.

5039-19, S.2

Code of Tests


6.6.1.4 Move valve “A” handle to position No. 1.

6.6.1.5 Open cock 16, allow the AUX. RES. GAUGE indication to increase to 100 psi, then open cock 5 and close cock 16.

6.6.1.6 Move valve "A" handle to position No. 3 and open cock C.

TEST6.6.1.7 Note BP line indication must not drop more than 4 psi before increasing back to 100 psi.

6.6.1.8 Close cock C.

6.6.1.9 Move valve "A" handle to position No. 1, then open cock 16 and allow AUX. RES. GAUGE to increase to 100 psi.

6.6.1.10 Close cock 16 and proceed to 6.6.1.13.

6.6.1.11 Open cocks 1, 2, 5, 8, 9 and move valve "A" handle to Postion No. 1.

6.6.1.12 Open cock 16, allow the AUX. RES. GAUGE indication to increase to 100 psi, then close cock 16.

6.6.1.13 Operate the portion by moving valve “A” handle slowly from position No. 1 to position No. 8 and then back toposition No. 1, four times. Finally, leave the handle in position No. 8. On each cycle B.C. RES. GAUGE should increasein pressure and exhaust.

6.6.1.14 Open cock 3.

6.6.2 SERVICE POSITION

6.6.2.1 Slide Valve and Retaining Check Valve.

TEST6.6.2.2 COCK 8 OPENING - FLOWRATOR Meter - 13 cu. in./min. maximum.

6.6.2.3 Slide Valve.

6.6.2.4 Close cock 5.

6.6.2.5 Open cock 6, allow the EMER. RES. GAUGE indication to decrease to zero psi, then note.



6.6.2.8 Open cock 5 and allow the EMER. RES. GAUGE indication to increase to 100 psi.


TEST6.6.2.10 QUICK SERVICE EXHAUST PORT - FLOWRATOR Meter - 13 cu. in./min. maximum.

6.6.2.11 Quick Service Limiting Valve Diaphragm.

5039-19, S.2

Code of Tests


TEST6.6.2.12 QUICK SERVICE LIMITING VALVE VENT PORT - Soap Test - 1/2" max bubble in 15 seconds.

6.6.2.13 Auxiliary and Emergency Release Check Valves, Accelerated Service Release Check Valve and Pusher Pin,Service Piston Diaphragm, Release Valve Seal and O-Ring, Retaining Check Valve and Limiting Valve O-Ring and Diaphragm.

6.6.2.14 Close cocks 2, 3 and 5 and note.

TEST6.6.2.15 EMER. RES. AND AUX. RES. GAUGES - indication 1 psi maximum decrease in 20 seconds.

TEST6.6.2.16 RELEASE VALVE EXHAUST PORT - Soap Test - 1/2" bubble in 10 seconds.

6.6.2.17 Release Valve Diaphragm and O-Ring and Reset Valve O-Ring.

6.6.2.18 Open cocks 2, 3 and 5.

6.6.2.19 Pull the Release Valve handle through its full travel, hold the handle in this position for 1 to 2 seconds, thenrelease the handle.

6.6.2.20 When the B.C. RES. GAUGE indication has decreased to zero psi, close cocks 2, 3 and 5 and note.

TEST6.6.2.21 EMER. RES. AND AUX. RES. GAUGES - indication 1 psi maximum decrease in 20 seconds.


6.6.2.23 Open cocks 2, 5 and 16.

6.6.3 RELEASE POSITION

6.6.3.1 Initial conditions:

6.6.3.2 Cocks 1, 2, 5, 8, 9, 16 and the test rack supply cock open.

6.6.3.3 Valve “A” handle in position No. 1 and wait 5 seconds before proceeding.



6.6.3.6 Slide Valve and Graduating Valve.


6.6.3.8 Open cock 19 and note.



5039-19, S.2

Code of Tests


6.6.3.11 Close cocks 16 and 19.

6.6.3.12 Open cocks 4 and 15.

6.6.3.13 When the B.C. RES. GAUGE indication has decreased to zero psi, open cock 8.

6.6.3.14 Partly open cock 19, allow the AUX. RES. GAUGE indication to decrease to 80 psi, and then close cocks 19,15 and 4 and immediately note.



6.6.3.17 Open cocks 3, 12 and 16.

6.6.4 SERVICE LAP POSITION.


6.6.4.2 Cocks 1, 2, 3, 5, 8, 9, 12, 16 and the test rack supply cock open.


6.6.4.4 Graduating Valve and Slide Valve, Accelerated Service Release Check Valve, Limiting Valve O-Ring and RetainingCheck Valve.


6.6.4.7 Move valve “A” handle to position No. 5, allow the B.P. VOL. GAUGE indication to decrease to 88 psi, and thenmove valve “A” handle to position No. 3.

6.6.4.8 Partly open cock 4, allow the B.C. RES. GAUGE indication to decrease to 30 psi, and then close cocks 3, 4and 5 and note.

TEST6.6.4.9 B.C. RES. GAUGE - indication 1 psi maximum increase in 20 seconds.

TEST6.6.4.10 B.C. RES. GAUGE - indication no decrease in 20 seconds.

TEST6.6.4.11 EMER. RES. GAUGE - indication 1 psi maximum decrease in 20 seconds.

TEST6.6.4.12 QUICK SERVICE EXHAUST PORT - FLOWRATOR meter - 13 cu. in./min. maximum.

6.6.4.13 Return Flow Check Valve Plug, Reset Check Valve, Reset Valve O-Ring and Back Flow Check Valve Port.

6.6.4.14 Close cocks 1 and 2 and note.

5039-19, S.2

Code of Tests


TEST6.6.4.15 B.P. LINE GAUGE - indication 1 psi maximum decrease in 10 seconds.

6.6.4.16 Open cocks 2 and 6 and note.

TEST6.6.4.17 B.P. LINE GAUGE - Between 8 and 2 psi drop in 5 seconds. For configuration control letter “C”, No decreasewithin 15 seconds.



6.6.5 GASKETS.

6.6.5.1 Move valve “A” handle to position No. 1 and wait 5 seconds.

6.6.5.2 Open cocks 16 and 19, then open cocks 3, 11 and 13. Allow all test rack gauge indications (except Q.A. CH.GAUGE indication) to increase to 100 psi, and then note.

TEST6.6.5.3 AROUND ALL COVERS AND FILLING PIECE - Soap Test - Any bubble can not be larger then 1/4” diameter. Fuzztype leakage can not cover an area bigger than 3/4” square. Fuzz leaks between covers and bodies and gasket faces willbe permissible. Bubbles between covers and bodies and gaskets which reach a size of 1/8” diameter are not allowed.

6.6.5.4 Close cocks 11, 13, 16 and 19.

6.6.5.5 Open cock 12 and allow the B.C. RES. GAUGE indication to decrease to zero psi, then open cock 8.

6.7 Function and Capacity


6.7.1.1 Cocks 1, 2, 3, 5, 8, 9, 12 and the test rack supply cock open.


6.7.2 SERVICE PISTON BODY AND SLIDE VALVE.

6.7.2.1 Brake Cylinder Application.



6.7.2.5 Move valve “A” handle to position No. 7, allow the B.P. VOL. GAUGE indication to decrease to 70 psi, and thenmove valve “A” handle to position No. 3 and note.

TEST6.7.2.6 B.C. RES. GAUGE - indication must increase from zero to 55 psi in 4 to 6.5 seconds.

6.7.3 Service Piston Release and Brake Cylinder Release Port.

5039-19, S.2

Code of Tests


6.7.3.1 Open cock 16, allow the AUX. RES. GAUGE indication to stabilize, then close cock 16.


6.7.3.3 Open cock 6. Wait for EMER. RES. GAUGE to go to zero psi, then close cock 6.

6.7.3.4 Move valve “A” handle to position No. 2 and note.

TEST6.7.3.5 B.P. VOL. AND AUX. RES. GAUGES - 0.9 to 2 psi differential when brake cylinder reservoir pressure exhausts.

TEST6.7.3.6 B.C. RES. GAUGE - indication must decrease from 40 to 20 psi in 8 to 12 seconds.

6.7.3.7 Open cock 5.


6.7.3.9 Open cocks 12 and 16, allow the AUX. RES. and EMER. RES. GAUGE indications to increase to 100 psi,then close cock 16.

6.7.3.10 When the B.C. RES. GAUGE indication has decreased to zero psi, then close cock 12.

6.7.4 Preliminary Quick Service Choke and Volume.


6.7.4.2 Cocks 1, 2, 3, 5, 8, 9 and test rack supply cock open.



TEST6.7.4.5 QUICK SERVICE EXHAUST PORT - a light blow of air must commence (as determined by feel) and continuefor 5 to 16 seconds.

6.7.4.6 When the B.P. VOL. GAUGE indication has decreased to 78 to 79 psi, move valve “A” handle to position No. 3.

6.7.5 Stability Port.

6.7.5.1 Wait 5 seconds, then open cock 16.

6.7.5.2 Move valve “A” handle to position 5 and reduce the B.P. VOL GAUGE to 61 to 62 psi, then move valve “A” handleto position No. 3.

6.7.5.3 Wait 45 seconds, then move valve “B” handle to the “Cut-In” position and open cock “A”.

6.7.5.4 Adjust the B.P. VOL. and AUX. RES. GAUGE indications to 64 to 65 psi as follows:

6.7.5.5 If the gauge indications are greater than 64 to 65 psi, move valve “A” handle to position No. 4, allow the B.P. VOL. andAUX. RES. GAUGE indications to decrease to 64 to 65 psi, then move valve “A” handle to position No. 3.

5039-19, S.2

Code of Tests


6.7.5.6 If the gauge indications are less than 64 to 65 psi, move valve “A” handle to position No. 2, allow the B.P. VOL. andAUX. RES. GAUGE indications to increase to 64 to 65 psi, then move valve “A” handle to position No. 3.

6.7.5.7 Press the hose nozzle of the FLOWRATOR meter firmly against the cock “B” opening and then adjust cock “B”such that the flowmeter indicates 131/2 to 141/2 cu. in./min.

6.7.5.8 Close cocks 2 and 16 and note.

TEST6.7.5.9 MANOMETER - indication must be 0.2 to 0.7 psi.

6.7.5.10 Move valve “B” handle to the “Cut-Out” position.

6.7.5.11 Close cock “A”.

6.7.5.12 Open cock 2.


6.7.5.14 Open cock 16, allow the AUX. RES. GAUGE indication to increase to 100 psi, then close cock 16.

6.7.5.15 Open cock 12, allow the B.C. RES. GAUGE indication to decrease to zero psi, then close cock 12.

6.7.6 2nd Quick Service Limiting Valve Port, Spring and O-Ring.


6.7.6.2 Cocks 1, 2, 3, 5, 8, 9 and the test rack supply cock open.


6.7.6.4 Move Valve “A” handle to position No. 4, allow B.P. VOL GAUGE indication to decrease to 98 psi (such that theBC RES. GAUGE indication begins to increase), then move Valve “A” handle to position No. 3.

6.7.6.5 Wait 20 seconds, open cock 16 and then open cock 12, allow B.C. RES. GAUGE indication to decrease tozero psi, then close cock 12 and note.

TEST6.7.6.6 B.C. RES. GAUGE - indication must increase from zero to 6 psi in 2.5 to 10 seconds.

TEST6.7.6.7 B.C. RES. GAUGE - must cease to increase at 7 to 12 psi. Note the actual value obtained for reference inTEST 6.7.6.9.

6.7.6.8 Partly open cock 4, allow the B.C. RES. GAUGE indication to decrease to 4 psi, then close cock 4 and note.

TEST6.7.6.9 B.C. RES. GAUGE - indication must increase to the value obtained in TEST 6.7.6.7.

6.7.6.10 Close cock 3 and note.

TEST6.7.6.11 B.C. RES. GAUGE - indication 1 psi maximum increase in 15 seconds.

5039-19, S.2

Code of Tests


6.7.6.12 Close cock 16.


6.7.6.14 Open cocks 3, 12 and 16 and allow the AUX. RES. GAUGE indication to increase to 100 psi.

6.7.7 Accelerated Service Release.


6.7.7.2 Cocks 1, 2, 3, 5, 8, 9, 12, 16 and the test rack supply cock open.


6.7.7.4 When the B.C. RES. GAUGE indication has decreased to zero psi, close cocks 12 and 5.

6.7.7.5 Move valve “A” handle to position No. 5, allow the B.P. VOL. GAUGE indication to decrease to 92 psi, then movevalve “A” handle to position No. 3.

6.7.7.6 Move valve “B” handle to the “Cut-In” position.

6.7.7.7 Adjust the AUX. RES. GAUGE indication to 92 psi as follows:

6.7.7.8 If the AUX. RES. GAUGE indication is greater than 92 psi, move valve “A” handle to position No. 4, allow the AUX.RES. GAUGE indication to decrease to 92 psi, then move valve “A” handle to position No. 3.

6.7.7.9 If the AUX. RES. GAUGE indication is less than 92 psi, move valve “A” handle to position No. 2, allow the AUX.RES. GAUGE indication to increase to 92 psi, then move valve “A” handle to position No. 3.

6.7.7.10 Close cock 16.

6.7.7.11 IMPORTANT: In item 6.7.7.13, when cocks 5 and “C” are opened, the B.P. VOL. GAUGE indication begins toincrease at a faster rate, the manometer must be immediately read and valve “B” handle moved to the “Cut-Out” position.

6.7.7.12 Open cocks 5 and “C” and when the B.P. VOL. GAUGE indication begins to increase at a faster rate, note.

TEST6.7.7.13 MANOMETER - indication must be 1.6 to 2.1 psi.

6.7.7.14 Immediately move valve “B” handle to the “Cut-Out” position and note.

TEST6.7.7.15 B.P. VOL. GAUGE - indication must have increased to 97 psi rapidly.

6.7.7.16 Close cock “C”.


6.7.7.18 Open cock 16 and allow the AUX. RES. GAUGE indication to increase to 100 psi.

6.7.7.19 Close cocks 3, 5 and 16.

6.7.8 Port 5 to Port 2.

5039-19, S.2

Code of Tests



6.7.8.2 Cocks 1, 2, 8, 9 and the test rack supply cock open.



TEST6.7.8.5 AUX. RES.GAUGE - Must decrease from 100 to 97 psi in 3 to 11 seconds and must continue to decrease.


6.7.8.7 Open cock 5.


6.7.9 Auxiliary and Emergency Reservoir Release Valve Ports.

6.7.9.1 Pull the Release Valve handle through it’s full travel, hold the handle in this position for 8 seconds, thenrelease the handle and note.

TEST6.7.9.2 AUX. RES. GAUGE - indication must decrease to 55 psi or below.

TEST6.7.9.3 EMER. RES. GAUGE - indication must decrease to 65 psi or below.


6.7.9.5 Open cocks 4, 6 and 16, allow the B.C. RES., EMER. RES. and AUX. RES. GAUGE indications to decreaseto zero psi. Wait 10 seconds after gauges reach zero psi for complete drain, then close cocks 4, 6 and 16.

6.7.10 Auxiliary Charging Port.


TEST6.7.10.2 AUX. RES. GAUGE - Indication must increase from 5 to 15 psi in 9 to 14 seconds. For configuration controlletter “C” indication must increase from 5 to 14.5 psi in 9 to 14 seconds.


6.7.10.4 Open cocks 3, 5, 9, 13, 16, 19 and 20, allow the B.C. RES. GAUGE indication to increase to 100 psi, thenclose cocks 13, 16, 19 and 20.

6.7.11 RELEASE VALVE


6.7.11.2 Cocks 1, 2, 3, 5, 9 and the test rack supply cock open.


5039-19, S.2

Code of Tests


6.7.12 Release Valve Lock-Up Brake Cylinder Port.

6.7.12.1 Move valve “A” handle to position No. 8 and allow the B.P. VOL. GAUGE indication to decrease to zero psi.

6.7.12.2 Pull the Release Valve handle through it’s full travel, hold the handle in this position for 1 to 2 seconds, thenrelease the handle and note.

TEST6.7.12.3 B.C. RES. GAUGE - indication must decrease from 100 to 10 psi in 1 to 4 seconds.


6.7.12.5 Open cock 4, allow the B.C. RES. GAUGE indication to decrease to zero psi, then close cock 4.

6.7.13 Port 10 to EX. and Retaining Check Valve Spring.

6.7.13.1Close cock 3.

6.7.13.2Open cock 20 and note.

TEST6.7.13.3 Q.A. CH. GAUGE - indication must decrease from 100 to 10 psi in 3 to 7 seconds.

TEST6.7.13.4 Q.A. CH. GAUGE - indication must cease to decrease at 4 psi, or less but greater than 1 psi.

6.7.14 Reset Spool Valve Differential and Port, and Reset Check Valve Spring.

6.7.14.1 Close cock 20.

6.7.14.2 Move valve “A” handle partly into position No. 1, allow the B.P. VOL. GAUGE indication to increase to 30 psi,and then move valve “A” handle to position No. 2 and when the B.P. VOL. GAUGE indication begins to charge at a fasterrate, note.

TEST6.7.14.3 B.P. VOL. GAUGE - indication must be 35 to 50 psi.

6.7.14.4 Immediately move valve “A” handle to position No. 3 and note.

TEST6.7.14.5 B.P. VOL. GAUGE - indication must increase from 50 to 55 psi in not more than 3 seconds.

6.7.14.6 When the B.P. VOL. GAUGE indication has stabilized, note.

TEST6.7.14.7 B.P. VOL. GAUGE - indication must be 3 to 8 psi lower than the AUX. RES. GAUGE indication.

6.7.15 Release Valve Spring.

6.7.15.1 Open cock 16.

6.7.15.2 Move valve “A” handle to position No. 8 and when the B.C. RES. GAUGE indication starts to increase, note.

5039-19, S.2

Code of TestsApril


TEST6.7.15.3 AUX. RES. GAUGE - indication must be 3 to 9 psi.

6.7.15.4 Close cock 16, move “A” handle to position No. 1 and wait 3 seconds, then open cocks 8 and 16 and chargeAUX. RES. GAUGE to 100 psi.

6.8 Final Leakage

6.8.1 Slide Valve and Graduating Valve.

6.8.2 Commence tests with cocks 1, 2, 5, 8, 9 and 16 open and valve “A” handle position No. 1.

TEST6.8.3 COCK 8 LEAKAGE TEST FITTING - FLOWRATOR Meter - 13 cu. in./min. maximum.

6.8.4 Close cock 8. Open cock 19.

TEST6.8.5 QUICK SERVICE EXHAUST PORT - FLOWRATOR Meter - 13 cu. in./min. maximum.

6.8.6 Close cocks 16 and 19. Open cocks 8, 4 and 15. Partly open cock 19 and reduce AUX. RES. GAUGE to 80psi, then close cocks 19, 15 and 4.

TEST6.8.7 QUICK SERVICE EXHAUST PORT - FLOWRATOR Meter - 13 cu. in./min. maximum.

TEST6.8.8 COCK 8 LEAKAGE TEST FITTING - FLOWRATOR Meter - 13 cu. in./min. maximum.

3/8 11/16

21/4

Press Fit

3/8R

3/8 1/2

13/4

.379 +.001-.000

Break Corner1/32 x 45°

PART A

PART B

A

B

<

<

<

<

<

<

< << <

<<<

<<

<

<

Material: Stainless SteelNote: Finish All Over

.375 .001Ream

+/-

Figure 12 - Special Plunger for AB - 2 Test Plate

5039-19, S.2

Code of Tests


6.9 Completion of Test

6.9.1 Close cocks 2 and 5. Move “A” handle to position No. 8.

6.9.2 Open cocks 3, 4, 6, 8, 11, 12 and 16 and allow the B.C. RES. and EMER. RES. GAUGE indications to decreaseto zero psi.

6.9.3 After all test rack gauge indications (except MAIN RES. GAUGE) have decreased to zero psi, close all test rackand test plate cocks except the test rack supply cock.

6.9.4 WARNING: THE FASTENERS, WHICH SECURE THE TESTED PORTION TO THE TEST PLATE, MUST ALL BECAREFULLY LOOSENED BEFORE THEY ARE REMOVED.

6.9.5 Remove the tested portion from the Test Plate.

6.9.6 If the device just removed from the test rack is the last of a series (or is the only device) being tested, proceed toitem 6.9.7

6.9.6.1 If more are to be tested, proceed to Section 6.6.

6.9.7 Test Rack Shutdown.

6.9.7.1 Close test rack supply cock. Open cocks 3, 12, 13, 9, 2, 16 and drain the B.C., B.P., AUX., EM, and MainReservoirs to zero psi.

6.9.7.2 Open all cocks except the test rack supply cock.

7.0 TEST FOR ABDX, ABDXL, ABDX-R AND ABDXL-R EMERGENCY PORTIONS (AB TEST RACK)

7.1 Drawings and Other Information

7.1.1 Diagrammatic view and arrangement of AB test rack -Section 8, Plates 2 and 5.

7.1.2 The following devices can be tested according to thisspecification.

7.1.3 DESIGNATION Part No.ABDX EMERGENCY PORTION 592581ABDX EMERGENCY PORTION (Aluminum) 661520ABDX-L EMERGENCY PORTION 592678ABDX-L EMERGENCY PORTION (Aluminum) 661639ABDX-SS EMERGENCY PORTION 661356ABDX-SS EMERGENCY PORTION (Aluminum) 664745ABDX-SS EMERGENCY PORTION (Aluminum) 664819ABDX-R EMERGENCY PORTION 304896ABDXL-R EMERGENCY PORTION 304897

This test code requires the configuration letter of the portion being tested to be known. The portion configuration letter isindicated by the letter following the serial number stamped on the name plate on the valve. If there is no letter following theserial number then treat it as configuration “A”. Configuration “C” emergency portions can also be identified by the integralemergency vent protector (Figure 13).

Figure 13 - Internal Vent Protector

InternalVent Protector

5039-19, S.2

Code of Tests


7.1.4 IMPORTANT: Make certain that the piece number of the device being tested is covered by this TESTSPECIFICATION. If the procedure DOES NOT APPLY to the piece number of the device being tested, the results obtainedWILL NOT BE CORRECT and the device WILL NOT BE SATISFACTORY for Service.

7.1.5 IMPORTANT: This document may be revised at any time by the Wabtec Corporation to include changes in thetest procedure or values required for the device covered by this test specification to be satisfactory for the service intended.It is the responsibility of the owner/user of this product and the company/person making the necessary tests covering theoperation of this device to see to it that the latest issue of this test specification is being used. Consult your local WabtecCorporation Representative before using this document to assure that you have the latest revision.

7.2 Test Equipment Requirements

7.2.1 IMPORTANT: The test rack used in making the following tests must meet the requirements in the current issueof Section 4 of Instruction Pamphlet No. 5039-19, Sup. 2.

7.2.2 AB-2 Test Plate Complete, Part No. 500895

7.2.3 Lower Stud, Part No. 81370 - 5/8" x 73/8" stud required for ABDXL and ABDXL-R

7.2.4 Gasket, Part No. 96717

7.2.5 A special plunger to the vent valve test fitting may be used in place of the standard plunger in the AB-2 test plate(See Figure 12).

7.3 Test Procedure Requirements

7.3.1 Do not deviate from test specification.

7.3.2 When testing leakage with the FLOWRATOR Meter, press the hose nozzle of the FLOWRATOR Meter againstthe exhaust opening specified and note that the float does not rise higher than indicated for each respective test.

7.3.3 IMPORTANT: Throughout this specification, valve “B” handle must always remain in the (“Cut-Out”) positionunless otherwise specified.

7.3.4 If in the following tests, it becomes necessary to remove any emergency portion cover due to leakage or otherdefects, it will be necessary to again coat the cover seal with soap suds after the valve is reassembled and the pressurerestored to detect any leakage that may have occurred.

7.3.5 During FLOWRATOR Meter Leakage Tests, Cock 21 Leakage Test Fitting may be used in place of the specialvent valve test fitting.

7.4 Specification Compliance

IMPORTANT: The ABDX, ABDXL, ABDX-R or ABDXL-R Control Valve Emergency Portion being tested MUST meet ALLthe requirements of this specification before being released for shipment.

7.5 Test Set-Up

7.5.1 CAUTION: BEFORE STARTING TEST, MAKE CERTAIN THAT, TEST PLATE AND DEVICE TO BE TESTEDARE FASTENED SECURELY TO PREVENT POSSIBLE PERSONAL INJURY.

7.5.2 WARNING: AIR WILL VENT FROM THE RESPECTIVE COCK OR THE PORTION VENT VALVE DURINGOPERATIONS. CARE SHOULD BE EXERCISED SO THAT ALL LOOSE MATERIAL AND OR PERSONNEL ARE CLEAROF VENTING.

5039-19, S.2

Code of Tests


IMPORTANT: If the emergency portion is equipped with an internal vent protector (Figure 13) the retainer/seal MUST BEremoved prior to any testing with special vent valve fitting.

7.5.3 Retainer/Seal Removal - Using retaining ring pliers, remove the retaining ring that secures the retainer/seal assemblyfrom the bottom vent. Remove the retainer/seal assembly from the body and set aside. The retainer/seal assembly willhave to be reinstalled after the testing is complete on the configuration control letter “C” valves.

IMPORTANT: If the emergency portion is equipped with an internal vent protector (Figure 13) a new style specialvent valve fitting must be used (Section 2.2.2, item 7). The difference between section 2.2 items 6 and 7 is theinterface seal. For portions with external vent protectors the seal is Part No. 500973.

7.5.4 Supply pressure must be maintained at 120 psi.

7.5.5 Secure the emergency portion, less vent protector, to the test rack.

7.5.6 Put valve “A” handle in position No. 8.

7.5.7 Close all cocks except 1, 2, 9 and the rack supply cock.

7.5.8 Set test rack feed valve so that MAIN RES. GAUGE indicates 100 psi.

7.6 Leakage


7.6.1.1 Cocks 1, 2 and 9 open.



7.6.1.4 Open cocks 5, 16, 19 and 20.

7.6.1.5 Allow the B.P. VOL. and AUX. RES. GAUGE indications to increase to 100 psi.

7.6.1.6 Close cocks 16 and 19. Move valve “A” handle to position No. 3.

7.6.1.7 Operate the portion by moving the valve “A” handle slowly from position No. 3 to position No. 5 and then backto position No. 3, a minimum of four times. Finally, move the handle to position No. 8. An emergency should occur.

7.6.1.8 Open cock 15.


7.6.1.10 Close cock 15.

7.6.1.11 Open cocks 4, 16 and 19.

7.6.2 RELEASE POSITION


7.6.2.2 Cocks 1, 2, 4, 5, 9, 16, 19 and 20 open.

5039-19, S.2

Code of Tests



IMPORTANT: If the emergency portion is equipped with an internal vent protector the retainer seal assembly MUST BEremoved as in Section 7.5.3.

WARNING: KEEP FINGERS CLEAR OF PINCH POINT WHEN LOCKING TEST FITTING INTO PLACE.

7.6.2.4 Close cock 5. Open cock 6. Hold special vent valve leakage test fitting with pressure switch (See Figure 4,Items 6 or 7) in place and secure by closing cock 6 and opening cock 5. Make sure the correct special vent valve fitting isbeing used with the external or internal vent protector.

7.6.2.5 High Pressure Valve O-ring and Emergency Accelerated Release Valve O-ring.

TEST7.6.2.6 COCK 4 LEAKAGE TEST FITTING - FLOWRATOR Meter - No float rise.


7.6.2.8 Move valve “A” handle to position No. 3. Open cocks 3 and 13 and allow B.C. RES. GAUGE to build up to 100psi, then move valve “A” handle to position No. 1.

7.6.2.9 Slide Valve, Vent Valve Seal, and High Pressure Valve O-Ring.

NOTE: For ABDX-R and ABDXL-R portions only - just prior to all flowrator meter leakage tests, apply soap to theStabilizing Volume Seals. Then observe seals for possible leakage while applying flowrator. If leakage exists, reseat theseals firmly against the valve body to correct and then recheck leakage with flowrator.

TEST7.6.2.10 VENT VALVE TEST FITTING - FLOWRATOR Meter - 14 cu. in./min. maximum.

7.6.3 EMERGENCY ACCELERATED RELEASE POSITION.


7.6.3.2 Cocks 1, 2, 3, 5, 9, 13, 16, 19 and 20 open.



7.6.3.5 Partly open cock 15, and allow AUX. RES. GAUGE indication to decrease to 80 psi, then close cock 15.


TEST7.6.3.7 VENT VALVE TEST FITTING - FLOWRATOR Meter - 14 cu. in. min./maximum.

7.6.3.8 Emergency Accelerated Release Check Valve and O-Ring on Dump Spool.


7.6.3.10 Open cock 4.

5039-19, S.2

Code of Tests


TEST7.6.3.11 COCK 4 LEAKAGE TEST FITTING - FLOWRATOR Meter - No float rise.



7.6.3.14 Emergency Accelerated Release Valve O-ring.

7.6.3.15 Partly open cock 4, allow the B.C. RES. GAUGE indication to decrease to 80 psi, then close cock 4.


TEST7.6.3.17 B.C. RES. GAUGE - No decrease of indication in 10 seconds.

7.6.3.18 Close cock 15.


7.6.4 EMERGENCY POSITION.


7.6.4.2 Cocks 1, 2, 5, 9, 16, 19 and 20 open.


7.6.4.4 Emergency Accelerated Release Valve O-Ring and Spillover Plug.



7.6.4.7 Allow Q.A. CH. GAUGE pressure to reduce to 80 psi.


TEST7.6.4.9 EMER. RES. GAUGE - No decrease of indication in 10 seconds.

7.6.4.10 Open cock 15. Allow 10 seconds temperature change, then note.

TEST7.6.4.11 B.C. RES. GAUGE - No psi drop in 10 seconds.

7.6.4.12 High Pressure Valve O-Ring, Emergency Accelerated Release Valve O-Ring.

7.6.4.13 Close cocks 1, 15 and 20.

TEST7.6.4.14 VENT VALVE TEST FITTING - FLOWRATOR Meter - 8 cu. in./min. maximum.

5039-19, S.2

Code of Tests


7.6.4.15 Vent Valve.

7.6.4.16 Open cock 1.

7.6.4.17 Move valve “A” handle to position No. 2 and allow B. P. VOL. GAUGE indication to increase to 5 psi, thenmove the handle to position No. 3. Wait 5 seconds.

TEST7.6.4.18 VENT VALVE TEST FITTING - FLOWRATOR Meter - 10 cu. in. min/maximum.

7.6.5 CASTING AND GASKETS


7.6.5.2 Cocks 1, 2 and 9 open.



7.6.5.5 Open cocks 3, 5, 13, 16, 19 and 20 and allow all gauge indications to increase to 100 psi.

TEST7.6.5.6 ENTIRE PORTION - Soap Test - Any bubble can not be larger then 1/4” diameter. Fuzz type leakage can notcover an area bigger than 3/4” square. Fuzz leaks between covers and bodies and gasket faces will be permissible.Bubbles between covers and bodies and gaskets which reach a size of 1/8” diameter are not allowed.

7.6.5.7 Close cocks 5, 13, 16 and 19.

7.6.5.8 Open cock 6, remove special vent valve leakage test fitting with pressure switch. Open cocks 12 and 15 andallow Q.A. CH. and B.C. RES. GAUGE indications to decrease to zero, then move valve “A” handle to position No. 8.

7.7 Charging


7.7.1.1 Cocks 1, 2, 3, 6, 9, 12, 15 and 20 open.


7.7.1.3 Close cocks 3, 6, 9 and 15.

7.7.2 Quick Action Chamber


TEST7.7.2.2 Q.A. CH. GAUGE - Indication must increase from 10 to 30 psi in 13 to 19 seconds.

Test for ABDX-SS Only:

7.7.2.2.1 Q.A. CH. GAUGE - Indication must increase from 10 to 30 psi in 15 to 20 seconds.

7.7.2.3 Open cocks 3, 5, 16 and 19.

5039-19, S.2

Code of Tests


7.7.3 Service Application


7.7.3.2 Cocks 1, 2, 3, 5, 12, 16, 19 and 20 open.




TEST7.7.3.6 B.C. RES. GAUGE - Indication must increase from zero to 70 psi in 5 seconds maximum and no inshot delay(slow down of B.C. RES. GAUGE increase) occurs.



7.7.4 A.A.V. Function (Stability)


7.7.4.2 Cocks 1, 2, 3, 5, 9, 12, 16, 19 and 20 open.




7.7.4.4 Close cock 5. Open cock 6. Hold special vent valve leakage test fitting with pressure switch in place andsecure by closing cock 6 and opening cock 5. Make sure the correct special vent valve fitting is being used with theexternal or internal vent protector.




7.7.4.8 B.P. VOL. GAUGE - Indication must decrease from 100 to 97 psi.

TEST7.7.4.9 VENT VALVE TEST FITTING - FLOWRATOR Meter indication 14 cu. in. min/maximum (at 97 psi).

7.7.4.10 Close cock 18.

7.7.4.11 Open cock 19.

7.7.4.12 Partly open cock 15 and reduce B.P. VOL. GAUGE to 80 psi.

5039-19, S.2

Code of TestsApr


7.7.4.13 Wait 30 seconds for temperature effect before proceeding.


7.7.4.15 For ABDX and ABDX-R only, open cock “E”. For ABDXL and ABDXL-R only, open cock “G”.

TEST7.7.4.16 VENT VALVE TEST FITTING - FLOWRATOR Meter must increase from that noted in Section 7.6.2.11 to offscale before B.P. VOL. GAUGE decreases 5 psi.

7.7.4.17 Allow B.P. VOL. GAUGE to decrease to 73 psi then close cock “E” or “G” and wait 10 seconds and note.

TEST7.7.4.18 VENT VALVE TEST FITTING - FLOWRATOR Meter must decrease to 18 cu. in./min. maximum.


7.7.4.20 Partly open cock 15 and allow B.P. VOL. GAUGE to decrease to 75 psi, then close cocks 15, 16 and 19.

7.7.4.21 Open cock “F”.

7.7.4.22 Allow B.P. VOL. GAUGE to decrease to 70 psi, then close cock “F” and note.

Test For ABDX and ABDX-R Only:

7.7.4.23 B.P. VOL. GAUGE - Indication must continue to decrease from 70 to 60 psi in 17 to 24 seconds, and a steadyblow of air must occur at the vent valve.

Test For ABDX-L and ABDXL-R Only:


Test for ABDX-SS Only:


7.7.4.26 Remove special vent valve leakage test fitting with pressure switch by closing cock 5 and opening cock 6.After fitting is removed, close cock 6 and open cock 5.


7.7.4.28 Open cocks 12, 16 and 19.

7.7.5 Service Stability


7.7.5.2 Cocks 1, 2, 3, 5, 9, 12, 16, 19 and 20 open.


5039-19, S.2

Code of Tests



7.7.5.5 Partly open cock 15 and allow AUX. RES., B.P. VOL. AND Q.A. CH. GAUGE indications to decrease to 90psi, then close cocks 15, 12, 16 and 19.

7.7.5.6 Quickly open cock 22 and note.

TEST7.7.5.7 B.P. VOL. GAUGE - Indication must decrease to 15 psi without B. P. VOL. GAUGE indication quicklydecreasing to zero.

7.7.5.8 Open cock 15.

7.7.5.9 Close cocks 22, 5 and 15.


7.7.5.11 Open cocks 12, 4, 6, 16 and 19.

7.7.6 Emergency Sensitivity


7.7.6.2 Cocks 1, 2, 3, 4, 6, 9, 12, 16, 19 and 20 open.



7.7.6.5 Partly open cock 15 and allow AUX. RES., B.P. VOL. AND Q.A. CH. GAUGE indications to decrease to 90psi, then close cock 15. Wait 30 seconds, then close 4, 12, 16, 19.



7.7.6.6 Hold special vent valve leakage test fitting with pressure switch into vent valve exhaust. Then secure byclosing cock 6 and opening cock 5. Make sure the correct special vent valve fitting is being used with the external or internalvent protector. Set timer to TEST mode and reset timer to zero.

7.7.6.7 Quickly snap and hold open cock 23 and note.

TEST7.7.6.8 B.P. VOL. GAUGE - Indication vents completely in not more than 2 seconds and B.C. RES. GAUGE begins

to increase immediately. TIMER - Indication of response time must be .15 to .35 seconds.

7.7.6.9 Open cock 15.

7.7.6.10 Remove special vent valve leakage test fitting with pressure switch from the vent valve exhaust by closingcock 5 and opening cock 6. After fitting is removed close cock 6 and open cock 5.

5039-19, S.2

Code of TestsApr





7.7.6.14 Close cock 15.

7.7.7 High Pressure Valve and Inshot Valve


7.7.7.2 Cocks 1, 2, 4, 5, 9, 12 and 20 open.


7.7.7.4 High Pressure Valve Resistance and Leakage Relief Port.

7.7.7.5 Partly open cock 19 and note.

TEST7.7.7.6 Q.A. CH. GAUGE - Indication is not higher than 22 psi when a blow of air occurs at cock 4 leakage test fitting.



TEST7.7.7.9 COCK 4 LEAKAGE TEST FITTING - Blow of air ceases.

7.7.7.10 Move valve “A” handle into position No. 1 to charge B.P. VOL. GAUGE to 50 psi, then move valve “A” back toposition No. 8.

7.7.7.11 Allow B.P. VOL. GAUGE to exhaust to zero, then close cock 15.

7.7.7.12 Partly open cock 19 and allow Q.A. CH. GAUGE indication to increase to 6 psi then close cock 19 and note.

TEST7.7.7.13 Q.A. CH. GAUGE - Indication must decrease from 6 psi to 3 psi in less than 4 seconds.

7.7.7.14 Inshot Function and High Pressure Valve Capacity.


7.7.7.16 Open cocks 3, 16 and 19.

7.7.7.17 Allow B.P. VOL. GAUGE indication to increase to 100 psi, then close cocks 4, 9, 12, 16 and 19.


TEST7.7.7.19 B.C. RES. GAUGE - Indication must increase from zero to 40 psi in 4 to 7 seconds and an Inshot Delay (slowdown of B.C. RES. GAUGE increase) must occur at 11 to 18 psi.

5039-19, S.2

Code of Tests


7.7.7.20 Allow B.C. RES. GAUGE indication to increase to between 70 and 75 psi, then open cock 15 for 5 seconds,then close cock 15.

7.7.8 Emergency Accelerated Release Position


7.7.8.2 Cocks 1, 2, 3, 5 and 20 open.


7.7.8.4 Emergency Accelerated Release Return Spring, Port Capacity and Check Valve Spring.


TEST7.7.8.6 B.P. VOL. GAUGE - Indication is 7 to 12 psi when B.P. VOL. GAUGE indication commences to increase ata faster rate and increases to 30 psi in 3 seconds maximum then;

7.7.8.7 Immediately move valve “A” handle to position No. 3 then note immediately.

TEST7.7.8.8 B.P. VOL. AND B.C. RES. GAUGES - between 6 to 13 psi differential.


7.7.8.10 Open cocks 9, 12, 16 and 19 and wait 10 seconds.

7.7.9 Quick Action Chamber Blowdown, Service Inshot and Final Leakage


7.7.9.2 Cocks 1, 2, 3, 5, 9, 12, 16, 19 and 20 open.




7.7.9.4 Close cock 5, open cock 6, then install special vent valve leakage test fitting with pressure switch. Make surethe correct special vent valve fitting is being used with the external or internal vent protector. Close cocks 6 and 12. Movevalve “A” handle to position No. 3, then open cocks 5 and 13. Allow B.C. RES. GAUGE to build up to 100 psi, then movevalve “A” handle back to position No. 1.

TEST7.7.9.5 VENT VALVE LEAKAGE TEST FITTING - FLOWRATOR Meter - 14 cu. in./min. maximum.

7.7.9.6 Close cocks 13 and 16. Partly open cock 15 and reduce AUX. RES. GAUGE to 80 psi, then close cock 15.

TEST7.7.9.7 VENT VALVE LEAKAGE TEST FITTING - FLOWRATOR Meter - 14 cu. in./min. maximum.

5039-19, S.2

Code of Tests


7.7.9.8 Close cock 5, open cock 6 and remove special vent valve leakage test fitting with pressure switch. Then closecock 6 and open cocks 5, 12 and 16. Charge B.P. VOL. and AUX. RES. GAUGE indications to 100 psi.

7.7.9.9 Allow B.P. VOL. and Q.A. CH. GAUGE indications to increase to 100 psi, then close cocks 9, 12, 16 and 19.

7.7.9.10 Partly open cock 13, and allow B.C. RES. GAUGE indication to increase to exactly 30 psi, then close cock 13.

7.7.9.11 Move valve “A” handle to position No. 8 and note:

TEST7.7.9.12 B.C. RES. GAUGE - Indication must increase from 30 psi to Inshot Delay in 3 seconds maximum.

TEST7.7.9.13 B.C. RES. GAUGE - Indicates Inshot Delay at 41 to 51 psi.

TEST7.7.9.14 Q.A. CH. GAUGE - Indication must decrease from 100 psi to 70 psi in 5 to 11 seconds.

7.7.9.15 Open cock 15.

7.7.10 Completion of Test

7.7.10.1 Diaphragm Position

7.7.10.2 Move valve “A” handle to position No. 2, increase B.P. VOL. GAUGE to 20 psi approximately, then move “A”handle to position No. 8.

7.7.10.3 Close cocks 3, 5 and 20.

7.7.10.4 Open cocks 4, 6 and 9.

7.7.10.5 Close cocks 4, 6, and 15.

CAUTION: LOOSEN FASTENERS SECURING THE TESTED PORTION TO THE TEST PLATE CAUTIOUSLYBEFORE REMOVING THEM COMPLETELY TO PREVENT POSSIBLE PERSONAL INJURY FROM THE EFFECTS OFRESIDUAL PRESSURIZED AIR WHICH MAY BE IN THE PORTION.

7.7.10.6 Remove the portion from the rack.

NOTE: Internal Vent Protector Retainer/Seal Installation: Place the retainer/seal assembly, that was removed and setaside, into the vent cavity of the body. Using retaining ring pliers secure the retainer/seal assembly into the body with theretaining ring. Make sure that the retaining ring snaps into its groove in the body.

8.0 DIAGRAMMATICS

Plate 1 - Test Rack Diagrammatic Piping Arrangement with View of the ABDX Type Service Portion (Configuration Control “A”)Plate 2 - Test Rack Diag. Piping Arrangement with View of the ABDX Type Emergency Portion (Configuration Control “A”)Plate 3 - ABDX Control Valve Diagrammatic (Configuration Control “A”)Plate 4 - Test Rack Diag. Piping Arrangement with View of the ABDX Service Portion (Configuration Control “C”)Plate 5 - Test Rack Diag. Piping Arrangement with View of the ABDX EmergencyPortion (Configuration Control “C”)Plate 6 - ABDX Control Valve Diagrammatic (Configuration Control “C”)

5039-19, S.2

Code of Tests


Plate 1 - Test Rack Diagrammatic Piping Arrangement with View of the ABDX Type Service Portion(Configuration Control “A”)

5039-19, S.2

Code of Tests


Plate 2 - Test Rack Diagrammatic Piping Arrangement with View of the ABDX Type Emergency Portion(Configuration Control “A”)

5039-19, S.2

Code of Tests


Plate 3 - ABDX Control Valve Diagrammatic (Configuration Control “A”)

5039-19, S.2

Code of Tests


Plate 4 - Test Rack Diag. Piping Arrangement with View of the ABDX Service Portion(Configuration Control “C”)

5039-19, S.2

Code of Tests

Page 53 of 54

Plate 5 - Test Rack Diag. Piping Arrangement with View of the ABDX Emergency Portion(Configuration Control “C”)

5039-19, S.2

Code of Tests

Page 54 of 54

Plate 6 - ABDX Control Valve Diagrammatic (Configuration Control “C”)

Documents

CODE OF TESTS - Wabtec Corporationtechinfo.wabtec.com/DataFiles/Leaflets/Test Code 5039-19, S.2.pdf · CODE OF TESTS 5039-19, S.2 ... and pulling the lever directly opens and closes