CTC 070 Answerbook

TRAINING MANUAL

CFM56-5A-5B

COMPONENT IDENTIFICATIONANSWERBOOK

OCTOBER 2005 CTC-070 Level 3

CFM56-ALL TRAINING MANUAL

GENERAL Page 1Issue 01

EFFECTIVITYALL CFM56 ENGINES

CFMI PROPRIETARY INFORMATION

CFMI Customer Training CenterSnecma Services

Site de Melun-Montereau,Aérodrome de Villaroche

Chemin de Viercy, B.P. 1936,77019 - Melun Cedex

FRANCE

CFMI Customer Training ServicesGE Aircraft Engines

Customer Technical Education Center123 Merchant Street

Mail Drop Y2Cincinnati, Ohio 45246

USA

Published by CFMI

THIS PAGE INTENTIONALLY LEFT BLANK









This CFMI publication is for Training Purposes Only. The information is accurate at the time of compilation; however, no update service will be furnished to maintain accuracy. For authorized maintenance practices and specifications, consult pertinent maintenance publications.

The information (including technical data) contained in this document is the property of CFM International (GE and SNECMA). It is disclosed in confidence, and the technical data therein is exported under a U.S. Government license. Therefore, None of the information may be disclosed to other than the recipient.

In addition, the technical data therein and the direct product of those data, may not be diverted, transferred, re-exported or disclosed in any manner not provided for by the license without prior written approval of both the U.S. Government and CFM International.

COPYRIGHT 1998 CFM INTERNATIONAL









USERS GUIDECOMPONENT IDENTIFICATION

Page 5Issue 01

USERS GUIDE





Page 6Issue 01

VIEWING POINT KEY :

FWD LOOKING AFT(FLA)

AFT LOOKING FWD(ALF)

AFT LOOKING FWD(ALF)

VIEWED FROM ABOVE VIEWED FROM ABOVE

VIEWED FROM BELOW

ENGINE RH SIDE

VIEWED FROM BELOW

ENGINE LH SIDE

SIDE VIEW SIDE VIEW





Page 7Issue 01

MATCH THE NAME OF THE COMPONENT TO THE CORRECT ANSWER.

Enter the item number in the left hand column that corresponds with the identification of the line, accessory or component shown in the picture. Then enter the item number in the right hand column that corresponds with the purpose for the line, accessory, or component shown in the picture.

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ENTERNUMBER

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Page 8Issue 01

EFFECTIVITYCFM56-5A, 5B ENGINES FOR A319-A320-A321


CFM56-5A, -5B TRAINING MANUAL

IDENTIFICATIONEXERCISE

COMPONENT IDENTIFICATION

Page 9Oct 05

IDENTIFICATION EXERCISE




Page 10Oct 05

CTC-070-001-01

3

1

5

6

2

4






Page 11Oct 05



ITEM NO.

IDENTIFICATIONITEM NO.

PURPOSE

4 Acoustical panels 3Accelerate the secondary airflow and constitute the first rotor stage of the primary airflow

2 Balancing screws 6Retains the fan blade spacers and accomodates the balancing screws

6 Spinner rear cone 5 Prevents the formation of ice

5 Spinner front cone 1Measures the temperature of the fan inlet and sends the information to the ECU

3 Fan blades 4 Provide sound attenuation1 T12 temperature sensor 2 Restore engine balance




Page 12Oct 05

CTC-070-003-02

1

5 3

4

2

6

6






Page 13Oct 05



ITEM NO.


PURPOSE

4 Electronic Control Unit (ECU) 3 Lets cooling air out of the ECU

6 Exciter boxes 1One of 3, sends fan blade upstream pressure parameters to the ECU

1 Ps12 pressure tapping 5 Provides the engine electronic identity to the ECU5 Engine identification plug 6 Store and discharge high voltage pulses to the igniters3 ECU air outlet 4 FADEC system computer2 ECU cooling inlet hose 2 Lets cooling air into the ECU chassis during flight




Page 14Oct 05

CTC-070-002-01

2

4

3

5

1






Page 15Oct 05



ITEM NO.


PURPOSE

4 Air duct 1 Provides for the installation of an engine support

2No.1 bear ing v ibrat ion sensor connection

5 Indicates serial number, thrust rating, etc...

5 Engine data plate 3 Commands air delivery to the starter1 Handling trunnion 4 Delivers air to the starter3 Starter air valve 2 Sends vibration parameters to the EVMU




Page 16Oct 05

CTC-070-004-01

1

4 35

6

2






Page 17Oct 05



ITEM NO.


PURPOSE

5 Starter oil filling port 1 Drains oil leaks from the forward sump labyrinth seals2 N1 speed sensor 3 Allows drainage of excess oil from the starter4 Starter drain port 6 Gives N2 rotation during start, using air pressure6 Starter 4 Allows drainage or oil contamination check1 Forward sump drain tube 5 Allows oil replenishment of the starter3 Starter overflow port 2 Provides speed parameters to the ECU and to the EVMU




Page 18Oct 05

CTC-070-005-03

2

6

5

3

1

CFM56-5A

4






Page 19Oct 05



ITEM NO.


PURPOSE

3 Fan duct panels 1 Optimizes LPT clearances and provides LPT case cooling2 T25 electrical harness 4 Unplugged hole(s) for booster inspection

1LPT(A)CC valve (Low Pressure Turbine (Active) Clearance Control)

5 Vanes that direct secondary airflow

5 Outlet Guide Vanes (OGV’s) 6Routes lines from the fan case area to the core engine area

4 Borescope port(s) 2Connects to the T25 sensor, to carry HPC inlet temperature data

6 6 o’clock tube bundle 3Provide access to the VBV’s, and by-pass primary airflow to secondary airflow when VBV’s are open




Page 20Oct 05

CTC-070-020-00

8

7

9

3 41CFM56-5A

2

6 5






Page 21Oct 05



ITEM NO.


PURPOSE

7 LPTCC air manifold 2 Distributes air to 6 impingement cooling ramps6 LPT nozzles RH cooling air tubes 5 Optimizes HPT clearances2 LPT case cooling manifold (one of two) 9 Engine rear structure and attachment point3 Combustion case 4 Provides containment for the compressor airflow

8 HPTCC air manifold 8Distributes air to the HPT shroud support, at 12 and 6 o’clock

4 Compressor front case 3 Houses the combustion chamber and the HP turbine1 LPT case 7 Distributes air to the two LPT cooling manifolds

5HPTCC valve (High Pressure Turbine Clearance Control)

6Deliver HPC 4th stage cooling air to the LPT stage 1 nozzles

9 Turbine rear frame (TRF) 1 Houses the LPT rotor/stator assembly

( THE SAME TABLE APPLIES TO THE PICTURE ON NEXT PAGE )




Page 22Oct 05

CTC-070-006-02

6

8

7

9

5

2

3 41CFM56-5B






Page 23Oct 05



ITEM NO.


PURPOSE

7 LPTCC air manifold 2 Distributes air to 6 impingement cooling ramps6 LPT nozzles RH cooling air tubes 5 Optimizes HPT clearances2 LPT case cooling manifold (one of two) 9 Engine rear structure and attachment point3 Combustion case 4 Provides containment for the compressor airflow

8 HPTCC air manifold 8Distributes air to the HPT shroud support, at 12 and 6 o’clock

4 Compressor front case 3 Houses the combustion chamber and the HP turbine1 LPT case 7 Distributes air to the two LPT cooling manifolds

5HPTCC valve (High Pressure Turbine Clearance Control)

6Deliver HPC 4th stage cooling air to the LPT stage 1 nozzles

9 Turbine rear frame (TRF) 1 Houses the LPT rotor/stator assembly

( SAME AS PREVIOUS TABLE )




Page 24Oct 05

CTC-070-021-00

3

2

4

15






Page 25Oct 05



ITEM NO.


PURPOSE

4 VSV feedback sensor 1 Collects fuel leaks within the gear motor1 VBV fuel gear motor drain line 3 1 of 2, drives a bellcrank assembly2 VSV actuation ring 5 1 of 2, drives the VSV actuation rings

3 VSV actuator 41 of 2, transmits VSV position data to the ECU for closed loop control

5 VSV bellcrank assembly 2 1 of 4, changes the angular position of the VSV’s




Page 26Oct 05

CTC-070-018-02

111

3

4

5

CFM56-5AONLY

2






Page 27Oct 05



ITEM NO.


PURPOSE

2 Single-plug borescope ports 5Supplies the other 10 fuel nozzles depending on the BSV position

1 Double-plug borescope ports 2 For inspection of the HPC mid section4 Fuel line to unstaged manifold 1 For inspection of the HPC rear section3 Burner Staging Valve (BSV) 4 Always supplies 10 fuel nozzles5 Fuel line to staged manifold 3 Interrupts fuel supply to 10 fuel nozzles




Page 28Oct 05

CTC-070-019-00

12

3

4

5

6






Page 29Oct 05



ITEM NO.


PURPOSE

1 HPTCC air manifold 2 Provides HPT shroud support temperature data to the ECU5 T5 sensor 1 Distributes HPC bleed air onto the HPT shroud support2 T-case sensor 3 Delivers fan discharge air to the cooling tubes4 RH igniter plug 5 Provides LPT discharge temperature data to the ECU3 LPTCC air manifold 6 Blow cooling air on the LPT case for rotor clearance control

6 LPT case cooling tubes 4Generates sparks inside the combustion chamber for fuel ignition




Page 30Oct 05

CTC-070-008-02

1

2

3

4

5

6

17






Page 31Oct 05



ITEM NO.


PURPOSE

5 Rear sump oil supply tube 7 Provide attachment for the exhaust plug4 Outer case drain hole 3 Returns oil to the lube unit1 Flame arrestor 5 Provides lubrication oil to the No.4 and No.5 bearings3 Rear sump oil scavenge tube 6 Provides attachment for the exhaust nozzle

7 Studs 1Vent orifice that prevents the ignition of air and oil vapors in the exhaust system

2 Rear sump oil drain port 4 Drains oil and water from the LPT6 TRF rear flange 2 Drains oil leaks from rear sump labyrinth seals




Page 32Oct 05

CTC-070-009-03

56

2

1

43

3

CFM56-5B ONLY






Page 33Oct 05



ITEM NO.


PURPOSE

1 5th stage customer bleed port 5/1 Used for aircraft systems air supply3 LPT nozzles LH cooling air tubes 2 Sends vibration parameters to the EVMU

4 Transient Bleed Valve (TBV) 6Allows the simultaneous action of the 4 variable stator stages

6 VSV bellcrank assembly 1/5 Used for aircraft systems air supply

5 9th stage customer bleed port 4Improves HPC stall margin during engine starting and rapid acceleration

2 TRF vibration sensor 3Deliver HPC 4th stage cooling air to the LPT stage 1 nozzles




Page 34Oct 05

CTC-070-010-01

7

6

4

3

1

2

5






Page 35Oct 05



ITEM NO.


PURPOSE

3 HPT borescope port 6 ECU control parameter for HPC pressure

6 Ps3 pressure tapping 19-probe ECU control parameter for exhaust gas temperature

4 Igniter plug 5 Supply fuel to the nozzles

2 EGT harness main junction box 3 One of 2, for inspection of HPT blades trailing edge

1 EGT (T49.5) temperature sensor 4One of 2, generates sparks inside the combustion chamber for fuel ignition

5Fuel manifolds (one staged, one unstaged)

7 Sprays fuel inside the combustion chamber

7 Fuel nozzle 2 Connection point for EGT harness




Page 36Oct 05

CTC-070-011-02

2

7

4

31

5

6






Page 37Oct 05



ITEM NO.


PURPOSE

4Variable Bleed Valve (VBV) position sensor

1Driven by a fuel gear motor, drives in turn all the other VBV doors

7 Flexible shaft 2 Connects the master bleed valve to the feedback sensor2 VBV feedback rod 3 Limits the VBV doors stroke

1 VBV master bleed valve 4Sends a position feedback signal to the ECU for closed loop control

5 VBV fuel gear motor 5 Fuel-powered by the HMU, drives the VBV doors

3 VBV stop mechanism 6Helps to deflect water and ice into the secondary airflow under bad weather conditions

6 Slide 7 Provide an interconnection between all the VBV doors




Page 38Oct 05

CTC-070-022-00

CFM56-5A 8

5

9

7

6

1

2

10

4

3






Page 39Oct 05



ITEM NO.


PURPOSE

2 Forward sump oil supply line 9 Returns oil from the lube unit / heat exchangers

6 Oil temperature sensor 5Depressurizes the lube unit oil supply hose at engine shut-down

8 Oil supply hose 7 Used during engine servicing to replenish the tank1 Fuel return valve (FRV) 4 Stores engine oil

10 IDG oil cooler 2 Lubricates the No.1, No.2 and No.3 bearings

3 Sight gauge 1Returns part of the HMU by-passed hot fuel to the aircraft tank to improve engine oil cooling efficiency

4 Oil tank 8 Supplies oil to the lube unit9 Oil return hose 10 Cools the oil used in the IDG mechanical area7 Gravity filler cap 6 Used for FRV control logic parameter5 Anti-siphon device 3 Allows a visual check of the oil level




Page 40Oct 05

CTC-070-012-02

CFM56-5B

1

11

5

6

10

7

2

4

9

8

3






Page 41Oct 05



ITEM NO.


PURPOSE

2 Forward sump oil supply line 9 Returns oil from the lube unit / heat exchangers

6 Oil temperature sensor 5Depressurizes the lube unit oil supply hose at engine shut-down

11 IDG oil cooler 2 Lubricates the No.1, No.2 and No.3 bearings8 Oil supply hose 7 Used during engine servicing to replenish the tank1 Fuel return valve (FRV) 4 Stores engine oil10 Popout indicator 3 Allows a visual check of the oil level

3 Sight gauge 1Returns part of the HMU by-passed hot fuel to the aircraft tank to improve engine oil cooling efficiency

4 Oil tank 8 Supplies oil to the lube unit9 Oil return hose 10 Provides a visual indication of magnetic chip contamination 5 Anti-siphon device 11 Cools the oil used in the IDG mechanical area7 Gravity filler cap 6 Used for FRV control logic parameter




Page 42Oct 05

CTC-070-014-01

3

6

7

5

3

1

2

4






Page 43Oct 05



ITEM NO.


PURPOSE

5 Hydro-Mechanical Unit (HMU) 4 Provides a cockpit indication1 Main oil/fuel heat exchanger 2 Prevents ice particles from entering servo systems7 Fuel pump 6 Provides access to the fuel pump filter2 Servo-fuel heater 3 Supplies clean fuel to the combustion chamber4 Fuel flow transmitter 1 Cools the engine oil3 Fuel nozzle filter 5 Fuel metering/servo-fuel regulator6 Fuel filter cover 7 A two-stage unit that pressurizes supply fuel




Page 44Oct 05

CTC-070-015-03

CFM56-5B CFM56-5A

1

510

2

11

7

12

66

89

4

3






Page 45Oct 05



ITEM NO.


PURPOSE

CFM56-5B CFM56-5B2 Oil temperature sensor 1 A transmitter that sends a clogging indication to the cockpit

5 Scavenge screens 7Collects particles and sends an electrical signal to the contamination indicator

3 Main supply filter 4A self-cleaning unit that takes over when clogging occurs in the main filter

7 Master chip detector (MCD) 6 Integrates oil supply and oil scavenge pumps1 Oil filter differential pressure switch 5 One per scavenge pump, to collect large debris6 Lube unit 2 For cockpit indication4 Backup filter 3 Filters oil in the supply circuit

CFM56-5A CFM56-5A9 Scavenge filter 11 One per filter, «pop out» type

11 Clogging indicators 10Collects magnetic particles in the oil scavenged from sumps and gearboxes

12 Pressure relief valve 6 Provides lubrication oil to sumps and gearboxes

6 Lubrication unit 12Protects the supply pump from abnormal output pressure buildup

10 Magnetic chip detectors 8 Filtering capacity 15 microns8 Supply filter 9 Filtering capacity 25 to 32 microns




Page 46Oct 05

CTC-070-016-02

3

5

6

78

3

2

14






Page 47Oct 05



ITEM NO.


PURPOSE

6 Fuel filter drain 8 / 7 Returns oil to the lube unit5 Fuel pump inspection plug 7 / 8 Returns oil to the lube unit4 Accessory Gearbox (AGB) 4 Supports and drives engine and aircraft accessories7 TGB sump scavenge line 2 For oil drainage

1 Transfer Gearbox (TGB) 3Provides HP rotor speed indications to both the ECU and the EVMU

2 AGB drain port 5 Used for impeller rotation check3 N2 speed sensor 6 To drain the fuel filter cavity

8 Rear sump scavenge line 1Transfers torque from the radial shaft to the horizontal drive shaft




Page 48Oct 05

CTC-070-017-01

12

4

3






Page 49Oct 05



ITEM NO.


PURPOSE

2 Handcranking pad 1 / 4 Features a carbon seal4 Hydraulic pump pad 2 Allows manual driving or locking of the HP rotor1 IDG pad 3 Powers the ECU after engine start3 Control alternator 4 / 1 Features a carbon seal





Page 50Oct 05



INDEX

EFFECTIVITYCFM56-5A, 5B FOR A319-A320-A321



INDEXCOMPONENT IDENTIFICATION

Page 51Oct 05





Page 52Oct 05

COMPONENT NAME PAGE COMPONENT NAME PAGE

5th stage customer bleed port . . . . . . . . . . . . . . . . . . . . 336 o’clock tube bundle . . . . . . . . . . . . . . . . . . . . . . . . . . . 199th stage customer bleed port . . . . . . . . . . . . . . . . . . . . 33Accessory Gearbox (AGB) . . . . . . . . . . . . . . . . . . . . . . 47Acoustical panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11AGB drain port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Air duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Anti-siphon device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Anti-siphon device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Backup filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Balancing screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Borescope port(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Burner Staging Valve (BSV) . . . . . . . . . . . . . . . . . . . . . 27Clogging indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Combustion case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Combustion case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Compressor front case . . . . . . . . . . . . . . . . . . . . . . . . . 21Compressor front case . . . . . . . . . . . . . . . . . . . . . . . . . 23Control alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Double-plug borescope ports . . . . . . . . . . . . . . . . . . . . 27EGT harness main junction box . . . . . . . . . . . . . . . . . . 35ECU air outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13ECU cooling inlet hose . . . . . . . . . . . . . . . . . . . . . . . . . 13EGT (T49.5) temperature sensor . . . . . . . . . . . . . . . . . 35Electronic Control Unit (ECU) . . . . . . . . . . . . . . . . . . . . 13Engine data plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Engine identification plug . . . . . . . . . . . . . . . . . . . . . . . . 13

Exciter boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Fan blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Fan duct panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Flame arrestor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Flexible shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Forward sump drain tube . . . . . . . . . . . . . . . . . . . . . . . . 17Forward sump oil supply line . . . . . . . . . . . . . . . . . . . . . 39Forward sump oil supply line . . . . . . . . . . . . . . . . . . . . . 41Fuel filter cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Fuel filter drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Fuel flow transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Fuel line to staged manifold . . . . . . . . . . . . . . . . . . . . . . 27Fuel line to unstaged manifold . . . . . . . . . . . . . . . . . . . . 27Fuel manifolds (one staged, one unstaged) . . . . . . . . . 35Fuel nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Fuel nozzle filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Fuel pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Fuel pump inspection plug . . . . . . . . . . . . . . . . . . . . . . . 47Fuel return valve (FRV) . . . . . . . . . . . . . . . . . . . . . . . . . 39Fuel return valve (FRV) . . . . . . . . . . . . . . . . . . . . . . . . . 41Gravity filler cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Gravity filler cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Handcranking pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Handling trunnion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15HPTCC air manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21HPTCC air manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23HPTCC air manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29





Page 53Oct 05


HPTCC valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21HPTCC valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23HPT borescope port . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Hydraulic pump pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Hydro-Mechanical Unit (HMU) . . . . . . . . . . . . . . . . . . . . 43IDG oil cooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39IDG oil cooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41IDG pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Igniter plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35LH bellcrank assembly . . . . . . . . . . . . . . . . . . . . . . . . . 25LPT(A)CC valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19LPTCC air manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21LPTCC air manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23LPTCC air manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29LPT case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21LPT case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23LPT case cooling manifold (one of two) . . . . . . . . . . . . 21LPT case cooling manifold (one of two) . . . . . . . . . . . . 23LPT case cooling tubes . . . . . . . . . . . . . . . . . . . . . . . . . 29LPT nozzles LH cooling air tubes . . . . . . . . . . . . . . . . . 33LPT nozzles RH cooling air tubes . . . . . . . . . . . . . . . . . 21LPT nozzles RH cooling air tubes . . . . . . . . . . . . . . . . . 23Lube unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Lubrication unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Magnetic chip detectors . . . . . . . . . . . . . . . . . . . . . . . . . 45Main oil/fuel heat exchanger . . . . . . . . . . . . . . . . . . . . . 43Main supply filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Master chip detector (MCD) . . . . . . . . . . . . . . . . . . . . . 45N1 speed sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17N2 speed sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47No.1 bearing vibration sensor connection . . . . . . . . . . . 15Oil filter differential pressure switch . . . . . . . . . . . . . . . . 45Oil return hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Oil return hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Oil supply hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Oil supply hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Oil tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Oil tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Oil temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . 39Oil temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . 41Oil temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . 45Outer case drain hole . . . . . . . . . . . . . . . . . . . . . . . . . . 31Outlet Guide Vanes (OGV’s) . . . . . . . . . . . . . . . . . . . . . 19Popout indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Pressure relief valve . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Ps12 pressure tapping . . . . . . . . . . . . . . . . . . . . . . . . . . 13Ps3 pressure tapping . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Rear sump oil drain port . . . . . . . . . . . . . . . . . . . . . . . . 31Rear sump oil scavenge tube . . . . . . . . . . . . . . . . . . . . 31Rear sump oil supply tube . . . . . . . . . . . . . . . . . . . . . . . 31Rear sump scavenge line . . . . . . . . . . . . . . . . . . . . . . . 47RH igniter plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Scavenge filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Scavenge screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45





Page 54Oct 05


Servo-fuel heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Sight gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Sight gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Single-plug borescope ports . . . . . . . . . . . . . . . . . . . . . 27Slide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Spinner front cone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Spinner rear cone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Starter air valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Starter drain port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Starter oil filling port . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Starter overflow port . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Studs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Supply filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45T-case sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29T12 temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . 11T25 electrical harness . . . . . . . . . . . . . . . . . . . . . . . . . . 19T5 sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29TGB sump scavenge line . . . . . . . . . . . . . . . . . . . . . . . 47Transfer Gearbox (TGB) . . . . . . . . . . . . . . . . . . . . . . . . 47Transient Bleed Valve (TBV) . . . . . . . . . . . . . . . . . . . . . 33TRF rear flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31TRF vibration sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Turbine rear frame (TRF) . . . . . . . . . . . . . . . . . . . . . . . 21Turbine rear frame (TRF) . . . . . . . . . . . . . . . . . . . . . . . 23Variable Bleed Valve (VBV) position sensor . . . . . . . . . 37VBV feedback rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

VBV fuel gear motor . . . . . . . . . . . . . . . . . . . . . . . . . . . 37VBV fuel gear motor drain line . . . . . . . . . . . . . . . . . . . . 25VBV master bleed valve . . . . . . . . . . . . . . . . . . . . . . . . 37VBV stop mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . 37VSV actuation ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25VSV actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25VSV bellcrank assembly . . . . . . . . . . . . . . . . . . . . . . . . 33VSV feedback sensor . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Documents

CTC 070 Answerbook