7- and 10-Inch Air Motors with Air Valveemanuals.nordson.com/automotive/zfiles/334607c.pdf · Fig. 2 10-Inch Air Motor Air Consumption Maintenance On a daily basis, check the vitalizer

7- and 10-Inch Air Motorswith Air Valve

Customer Product ManualPart 334607CIssued 3/05

NORDSON CORPORATION AMHERST, OHIO USA

Part 334607B E 2003 Nordson Corporation

Table of ContentsSafety 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Qualified Personnel 1. . . . . . . . . . . . . . . . . . . . . . . . . . .Intended Use 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Regulations and Approvals 1. . . . . . . . . . . . . . . . . . . .Personal Safety 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

High-Pressure Fluids 3. . . . . . . . . . . . . . . . . . . . . . .Fire Safety 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Halogenated Hydrocarbon Solvent Hazards 5. . .Action in the Event of a Malfunction 5. . . . . . . . . . . . .Disposal 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Description 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Air Consumption 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Troubleshooting 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Repair 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Air Valve 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Remove the Cover and Muffler Block 10. . . . . . . .Disassembe the Air Valve 12. . . . . . . . . . . . . . . . . .Assemble the Air Valve 14. . . . . . . . . . . . . . . . . . . .Install the Cover and Muffler Block 16. . . . . . . . . .

Air Motor 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Remove the Air Motor 16. . . . . . . . . . . . . . . . . . . . .Disassemble the Air Motor 19. . . . . . . . . . . . . . . . .Assemble the Air Motor 21. . . . . . . . . . . . . . . . . . . .Install the Air Motoronto a Bolt Together Pump 22. . . . . . . . . . . . . . . . .Install the Air Motoronto a Screw Together Pump 23. . . . . . . . . . . . . . .

Parts 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Air Valve 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Air Motors 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Kit 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contact UsNordson Corporation welcomes requests for information, comments, andinquiries about its products. General information about Nordson can befound on the Internet using the following address:http://www.nordson.com.Address all correspondence to:

Nordson CorporationAttn: Customer Service555 Jackson StreetAmherst, OH 44001

NoticeThis is a Nordson Corporation publication which is protected by copyright.Original copyright date 2000. No part of this document may bephotocopied, reproduced, or translated to another language without theprior written consent of Nordson Corporation. The information containedin this publication is subject to change without notice.

Trademarks

Nordson and the Nordson logo are registered trademarksof Nordson Corporation.

All other trademarks are the property of their respective owners.

7- and 10-Inch Air Motors with Air Valve 1

E 2005 Nordson CorporationAll rights reserved

334607CIssued 3/05

SafetyRead and follow these safety instructions. Task- and equipment-specificwarnings, cautions, and instructions are included in equipmentdocumentation where appropriate.

Make sure all equipment documentation, including these instructions, isaccessible to persons operating or servicing equipment.

Qualified Personnel

Equipment owners are responsible for making sure that Nordsonequipment is installed, operated, and serviced by qualified personnel.Qualified personnel are those employees or contractors who are trainedto safely perform their assigned tasks. They are familiar with all relevantsafety rules and regulations and are physically capable of performingtheir assigned tasks.

Intended Use

Use of Nordson equipment in ways other than those described in thedocumentation supplied with the equipment may result in injury topersons or damage to property.

Some examples of unintended use of equipment include

S using incompatible materialsS making unauthorized modificationsS removing or bypassing safety guards or interlocksS using incompatible or damaged partsS using unapproved auxiliary equipmentS operating equipment in excess of maximum ratings

Regulations and Approvals

Make sure all equipment is rated and approved for the environment inwhich it is used. Any approvals obtained for Nordson equipment will bevoided if instructions for installation, operation, and service are notfollowed.

7- and 10-Inch Air Motors with Air Valve2


334607CIssued 3/05

Personal Safety

To prevent injury follow these instructions.

S Do not operate or service equipment unless you are qualified.

S Do not operate equipment unless safety guards, doors, or covers areintact and automatic interlocks are operating properly. Do not bypassor disarm any safety devices.

S Keep clear of moving equipment. Before adjusting or servicingmoving equipment, shut off the power supply and wait until theequipment comes to a complete stop. Lock out power and secure theequipment to prevent unexpected movement.

S Relieve (bleed off) hydraulic and pneumatic pressure before adjustingor servicing pressurized systems or components. Disconnect, lockout, and tag switches before servicing electrical equipment.

S While operating manual spray guns, make sure you are grounded.Wear electrically conductive gloves or a grounding strap connected tothe gun handle or other true earth ground. Do not wear or carrymetallic objects such as jewelry or tools.

S If you receive even a slight electrical shock, shut down all electrical orelectrostatic equipment immediately. Do not restart the equipmentuntil the problem has been identified and corrected.

S Obtain and read Material Safety Data Sheets (MSDS) for all materialsused. Follow the manufacturer’s instructions for safe handling anduse of materials, and use recommended personal protection devices.

S Make sure the spray area is adequately ventilated.

S To prevent injury, be aware of less-obvious dangers in the workplacethat often cannot be completely eliminated, such as hot surfaces,sharp edges, energized electrical circuits, and moving parts thatcannot be enclosed or otherwise guarded for practical reasons.



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High-Pressure Fluids

High-pressure fluids, unless they are safely contained, are extremelyhazardous. Always relieve fluid pressure before adjusting or servicinghigh pressure equipment. A jet of high-pressure fluid can cut like a knifeand cause serious bodily injury, amputation, or death. Fluids penetratingthe skin can also cause toxic poisoning.

If you suffer a fluid injection injury, seek medical care immediately. Ifpossible, provide a copy of the MSDS for the injected fluid to the healthcare provider.

The National Spray Equipment Manufacturers Association has created awallet card that you should carry when you are operating high-pressurespray equipment. These cards are supplied with your equipment. Thefollowing is the text of this card:

WARNING: Any injury caused by high pressure liquid can beserious. If you are injured or even suspect an injury:

S Go to an emergency room immediately.S Tell the doctor that you suspect an injection injury.S Show him this card.S Tell him what kind of material you were spraying.

MEDICAL ALERT—AIRLESS SPRAY WOUNDS: NOTE TO PHYSICIAN

Injection in the skin is a serious traumatic injury. It is important to treatthe injury surgically as soon as possible. Do not delay treatment toresearch toxicity. Toxicity is a concern with some exotic coatings injecteddirectly into the bloodstream.

Consultation with a plastic surgeon or a reconstructive hand surgeon maybe advisable.

The seriousness of the wound depends on where the injury is on thebody, whether the substance hit something on its way in and deflectedcausing more damage, and many other variables including skinmicroflora residing in the paint or gun which are blasted into the wound.If the injected paint contains acrylic latex and titanium dioxide thatdamage the tissue’s resistance to infection, bacterial growth will flourish.The treatment that doctors recommend for an injection injury to the handincludes immediate decompression of the closed vascular compartmentsof the hand to release the underlying tissue distended by the injectedpaint, judicious wound debridement, and immediate antibiotic treatment.



334607CIssued 3/05

Fire Safety

To avoid a fire or explosion, follow these instructions.

S Ground all conductive equipment in the spray area. Use onlygrounded air and fluid hoses. Check equipment and workpiecegrounding devices regularly. Resistance to ground must not exceedone megohm.

S Shut down all equipment immediately if you notice static sparking orarcing. Do not restart the equipment until the cause has beenidentified and corrected.

S Do not smoke, weld, grind, or use open flames where flammablematerials are being used or stored.

S Do not heat materials to temperatures above those recommended bythe manufacturer. Make sure heat monitoring and limiting devices areworking properly.

S Provide adequate ventilation to prevent dangerous concentrations ofvolatile particles or vapors. Refer to local codes or your materialMSDS for guidance.

S Do not disconnect live electrical circuits while working with flammablematerials. Shut off power at a disconnect switch first to preventsparking.

S Know where emergency stop buttons, shutoff valves, and fireextinguishers are located. If a fire starts in a spray booth,immediately shut off the spray system and exhaust fans.

S Shut off electrostatic power and ground the charging system beforeadjusting, cleaning, or repairing electrostatic equipment.

S Clean, maintain, test, and repair equipment according to theinstructions in your equipment documentation.

S Use only replacement parts that are designed for use with originalequipment. Contact your Nordson representative for partsinformation and advice.



334607CIssued 3/05

Halogenated Hydrocarbon Solvent Hazards

Do not use halogenated hydrocarbon solvents in a pressurized systemthat contains aluminum components. Under pressure, these solventscan react with aluminum and explode, causing injury, death, or propertydamage. Halogenated hydrocarbon solvents contain one or more of thefollowing elements:

Element Symbol Prefix

Fluorine F “Fluoro-”

Chlorine Cl “Chloro-”

Bromine Br “Bromo-”

Iodine I “Iodo-”

Check your material MSDS or contact your material supplier for moreinformation. If you must use halogenated hydrocarbon solvents, contactyour Nordson representative for information about compatible Nordsoncomponents.

Action in the Event of a Malfunction

If a system or any equipment in a system malfunctions, shut off thesystem immediately and perform the following steps:

S Disconnect and lock out system electrical power. Close hydraulic andpneumatic shutoff valves and relieve pressures.

S Identify the reason for the malfunction and correct it before restartingthe system.

Disposal

Dispose of equipment and materials used in operation and servicingaccording to local codes.



334607CIssued 3/05

DescriptionThis section contains basic information about the air valve and airmotors. 7- and 10-inch air motors, when joined to various hydraulicsections (pumps), create different hydraulic output ratios. The installationand operation of the air motors and air valves are dependent upon theother components they are to be used with.

Refer to Table 1 to determine your pump ratio using the air motor andhydraulic section size.

Table 1 Hydraulic Output Ratios

Hydraulic Section Size (input shaft diameter)

Air Motor Size 5 cu-in. 8 cu-in. 17 cu-in.

7-Inch 32:1 24:1 N/A

10-Inch/10-Inch Oil-Less 65:1 48:1 20:1

Air Consumption

Figures 1 and 2 illustrate the correlation between air consumption andstroke frequency at selected inlet pressures for 7- and 10-inch air motors.The actual air consumption rate is influenced by

S system specificationsS material compositionS flow rateS other factors



334607CIssued 3/05

2317001A

20 40 60

10

20

30

40

50

60

Strokes per Minute

Air ConsumptionSCFM

Inlet PressurePSIG

0

Fig. 1 7-Inch Air Motor Air Consumption



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Air Consumption (contd)

2317002A

20 40 60

10

20

30

40

50

60

70

80

90

100

110

Strokes per Minute

Air ConsumptionSCFM

Inlet PressurePSIG

0

Fig. 2 10-Inch Air Motor Air Consumption

MaintenanceOn a daily basis, check the vitalizer oil supply in the air motor lubricatorand add oil as necessary. Adjust the lubricator to add one drop of oil forevery fifteen pump strokes.

NOTE: Other routine maintenance procedures may be requireddepending upon your application. Refer to the system maintenanceschedule provided by your Nordson representative.



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Troubleshooting

WARNING: Allow only qualified personnel to perform thefollowing tasks. Follow the safety instructions in this documentand all other related documentation.

This section contains troubleshooting procedures. These procedurescover only the most common problems that you may encounter. If youcannot solve the problem with the information given here, contact yourlocal Nordson representative for help.

Problem Possible Cause Corrective Action

1. Air motor not working Air supply inadequate or missing Check air supply and operatingpressures.

Hydraulic system blocked Check hoses, guns, and other hydrauliccomponents for blockages.

Air motor regulator malfunctioning orlubricator blocked

Check air motor lubricator and replace, ifnecessary. Clean lubricator.

NOTE: If more detailed information isrequired for troubleshooting the airmotor, refer to the pneumaticschematics provided with your systemdocumentation.

Air control valve solenoid activated,not working

Press the manual override button toallow air to enter the air motor.

2. Air motor leakingexcessively orconstantly

Worn U-cup in air motor Perform these steps:

1. Remove air motor guards.

2. Listen for air leaking from bottom ofair motor.

3. If U-cup is leaking, replace it.

Worn end bushings or O-rings on theair valve crankshaft

Replace air valve O-rings, if leaking. Or,repair air valve, as necessary.

Ice forming in air valve Install an air line heater near air valve orcontact your Nordson representative forassistance.

Worn or damaged air motor piston,air valve poppet seal washers, ormanifold O-rings

Repair air valve or air motor, or replacemanifold O-rings.



334607CIssued 3/05

Repair

WARNING: Allow only qualified personnel to perform thefollowing tasks. Follow the safety instructions in this documentand all other related documentation.

WARNING: Wear protective clothing, safety glasses, andgloves when working with this equipment.

WARNING: To prevent serious personal injury from materialunder pressure, always relieve system pressure beforebreaking any hydraulic connections.

To relieve system pressure, shut off the pump and trigger all of the guns.Shut off air pressure to the air motor regulator.

NOTE: The repair procedures cover three types of air motors. Checkthe part number of your air motor. Differences in data are noted asnecessary.

Air Motor Part Number

7-Inch 124702

10--Inch 124701

10-Inch Oil-Less 1032469

Air Valve

The following procedures provide information on air valve repair. SeeFigures 3 through 4 as specified.

Remove the Cover and Muffler Block

1. Reduce air supply regulator to 0 bar/psi and disconnect the air linefrom the motor.

2. See Figure 3. Remove the two pan head screws (1) andlock washers (2) from the side of the cover (3). Remove the cover.

3. Unscrew the mufflers (not shown) from the muffler block (4).

4. Remove the four socket head screws (10) that attach the air valve (6)to the upper and lower cylinder heads (7 and 8).

NOTE: Be careful not to lose the O-rings (9) from the air valve as youseparate the air valve and muffler block from the cylinder heads.

5. Remove the four socket head screws (5) that secure the mufflerblock and cover (11) to the air valve. Separate the muffler block fromthe air valve.



334607CIssued 3/05

9

2317005A

6

11

45

10

32

1

7

8

Fig. 3 Air Motor with Cover and Muffler Block Removed

1. Pan head screws2. Lock washers3. Cover4. Muffler block

5. Socket head screws6. Air valve7. Cylinder head (upper)8. Cylinder head (lower)

9. O-rings10. Socket head screws11. Cover



334607CIssued 3/05

Disassemble the Air Valve

1. See Figure 4. Remove the four socket head screws (1) from eachpoppet cap (2). Remove the poppet caps from the valve body (8).Remove the poppet seal washers (3) from the poppet caps.

2. Remove the socket head screws (4), poppets (5), and O-rings (6)from the valve body.

3. Remove the four socket head screws (20), snapper bracket (21), andgasket (22) from the valve body.

4. Disengage the ball stem (17), spring (18), and fork (19) from thesnapper (11). Remove the socket head screws (9), lockwashers (26), washers (25), snapper, and snapper pivot (10) from thevalve body.

5. Remove the socket head screw (16), bushing (14), seal washer (15),and O-ring (13) from the valve body.

6. Remove the crankshaft (12), O-ring (13), and arm (23) from the valvebody.

7. Push the poppet spool (24) from the valve body. Remove theO-rings (7) from inside the valve body.

8. Inspect all moving parts before re-assembly and replace any thatappear worn or damaged. Replace the O-rings and seals using theair valve seal kit. Refer to the Parts section for ordering information.



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12

3

45

67

2526

15

14

16

8

24

23

22

21

20

13

12

17

18

19

9

11

13

2317003A

2625

10

9

Fig. 4 Air Valve, Exploded View

1. Socket head screws2. Poppet caps3. Poppet seal washers4. Socket head screw5. Poppet6. O-ring7. O-ring8. Valve body9. Socket head screw

10. Snapper pivot11. Snapper12. Crankshaft13. O-ring14. Bushing15. Seal washer16. Socket head screw17. Ball stem18. Spring

19. Fork20. Socket head screws21. Snapper bracket22. Gasket23. Arm24. Poppet spool25. Washer26. Lock washer



334607CIssued 3/05

Assemble the Air Valve

NOTE: This procedure covers three types of air motors. Differences indata are noted as necessary.

1. 7- and 10-Inch Air Motors: Lubricate all O-rings with a compatibleO-ring lubricant before installation.

10-Inch Oil-Less Air Motor: Lubricate all O-rings with TFE greasebefore installation.

2. See Figure 4. Install the new O-rings (7) in the valve body (8).

3. Perform the following steps to install one poppet:

a. Install the new O-ring (6) on the spool side of one poppet (5).

b. Push the socket head screw (4) through the center of the poppet.Make sure the O-ring is still seated in the poppet.

c. Install the poppet on one end of the poppet spool (24). Tightenthe socket head screw to 13.6--17.6 Nm (10--13 ft-lb).

4. Note the position of the poppet spool cutout with respect to the valvebody. Install the poppet spool with poppet in the valve body so thatthe cutout is centered in the NPT port.

5. Install the new O-ring (13) on the crankshaft (12).

CAUTION: If you do not properly align the crankshaft with thearm as described in step 5, the valve will not work properly.

6. Align and install the crankshaft and arm (23) so that they areperpendicular to the valve body. It may be necessary to move thearm or crankshaft slightly to align the teeth of the arm with the splinesof the crankshaft.

NOTE: Apply threadlocking adhesive to the threads of the socket headscrew (16) before installing it in the valve body.

7. Assemble the new seal washer (15), O-ring (13), bushing (14), andsocket head screw (16). Hold the contact arm of the crankshaft andinstall this assembly on the opposite side of the valve body. Tightenthe socket head screw.



334607CIssued 3/05

8. To install the snapper assembly, perform the following steps:

a. Install the snapper pivot (10), washer (25), lock washer (26), andsocket head screw (9). Tighten the screwto 13.6--17.6 Nm (10--13 ft-lb).

b. Install the snapper (11), washer (25), lock washer (26), and sockethead screw (9). Tighten the screwto 13.6--17.6 Nm (10--13 ft-lb).

c. Coat the ball stem (17) with moly disulfide lubricant beforeassembling.

d. Place the spring (18) over the ball stem, and place the end of thefork (19) in the ball stem.

e. Position the gasket (22) on the valve body.

f. Place end of the fork over the snapper and hold this assembly inplace.

g. Place the snapper bracket (21) on top of gasket, place the ballstem in the socket of the snapper bracket, and install the foursocket head screws (20). Tighten the socket head screws evenlyto 33.9--40.7 Nm (25--30 ft-lb).

9. Perform the following steps to install the remaining poppet:

a. Install the new O-ring (6) in the remaining poppet.

b. Push the socket head screw (4) through the center of the poppet.Make sure the O-ring is still seated in the poppet.

c. Install the poppet in the valve body and tighten the socket headscrew to 13.6--17.6 Nm (10--13 ft-lb).

10. Install new poppet seal washers (3) in the poppet caps (2). Use theeight socket head screws (1) to attach the two poppet caps to thevalve body. Tighten the screws to 13.6--17.6 Nm (10--13 ft-lb).



334607CIssued 3/05

Install the Cover and Muffler Block

1. See Figure 3. Secure the muffler block (4) and cover (11) to thefour-way air valve (6) with four socket head screws (5). Tighten thescrews to 13.6--17.6 Nm (10--13 ft-lb).

2. Install two new O-rings (9) between the valve body and the upper andlower cylinder heads (7 and 8). Use four socket head screws (10) toattach the valve body to the cylinder heads. Tighten the screws to13.6--17.6 Nm (10--13 ft-lb).

3. Coat the threads of each muffler with an anti-seize thread sealingcompound. Screw the mufflers into the muffler block. Install thecover (3) with two pan head screws (1) and lock washers (2).

Air Motor

The 7-inch air motor features a nut and split collar that couples the airmotor shaft to the pump plunger. The 10-inch air motor uses a splitcoupling to connect the air motor shaft to the pump plunger. For thisprocedure, both types are referred to as the coupling.

The following procedures provide information on air motor repair. SeeFigures 5 through 7, as specified.

Remove the Air Motor

WARNING: Be sure to relieve all hydraulic pressure from thehoses at the outlet of the pump, and make sure to bleed off thepressure from the pump before repairing this unit. Otherwise,serious injury, death, or equipment damage could result.

1. Turn the air pressure to the pump air motor down until it barelyoperates the air motor. Operate the air motor until the coupling risesabove the solvent chamber. Shut off the air supply to the air motor.

2. Relieve all hydraulic pressure from the hoses. Bleed the pump.Remove the follower plate from the container, remove the containerfrom the unloader, and lower the follower plate to the frame. Refer toyour unloader manual for specific operation procedures, as needed.

3. Remove the coupling and note how it is attached to the air motorshaft.

4. Start the pump and observe the movement of the shaft. When it isfully retracted (with the piston at the top of the stroke), shut off thepump. Close the air motor ball valve and adjust the regulator to0 bar/psi. Disconnect the air supply line from the air motor.



334607CIssued 3/05

5. See Figure 5. Remove the two hex head screws (13), lockwashers (14), hex nuts (15), and two-piece shifter arm (10).

6. Bolt Together Pumps: Remove the three hex head screws (4) andlock washers (5) securing the air motor (1) to the mounting plate (2).As you lift the air motor from the mounting plate, take care not to losethe spacers (3) beneath the lower cylinder head (6). Move the airmotor to a clean work area.

NOTE: It will be necessary to raise the elevator slightly in order toremove the connecting rods from beneath the mounting plate (2).

Screw Together Pumps: See Figure 6. Remove the three hexnuts (4) from the connecting rods (3). Remove the connecting rodsfrom the lower cylinder head (6).

2317007A

1

6

7

3 2

45

712

11

131415

10

9

8

Fig. 5 Air Motor Assembly (Bolt Together Pumps)

1. Air motor2. Mounting plate3. Spacers4. Hex head screws5. Lock washers

6. Lower cylinder head7. Air motor shaft8. Hydraulic plunger9. Coupling10. Shifter arm

11. Collar12. Lower push rod13. Hex head screws14. Lock washers15. Hex nuts



334607CIssued 3/05

Remove the Air Motor (contd)

2317009A

1

4

3

6

2 510

11

121314

7

8

95

Fig. 6 Air Motor Assembly (Screw Together Pump)

1. Air motor2. Mounting plate3. Connecting rods4. Hex nuts5. Air motor shaft

6. Lower cylinder head7. Shifter arm8. Coupling9. Hydraulic plunger10. Lower push rod

11. Collar12. Hex head screws13. Lock washers14. Hex nuts



334607CIssued 3/05

Disassemble the Air Motor

1. Remove the air valve as described in this section.

2. See Figure 7. Use two wrenches to grasp the flats on the ends of theupper and lower push rods (1 and 2). Prevent the lower push rodfrom moving and turn the upper push rod counterclockwise. Removethe push rods, spool (3), and O-ring (4).

3. Remove the hex nuts (5) and lock washers (6) at the bottom of the airmotor. Pull the long hex head screws (7) out of the assembly.

4. Remove the upper cylinder head (8) and O-ring (9) from the air motor.

5. Turn the remaining assembly upside down. Remove four sockethead screws (10), lock washers (11), and the back-up plate (12) fromthe lower cylinder head (13).

6. Remove the lower cylinder head from the air cylinder (14). Removethe O-ring (15) from the lower cylinder head.

NOTE: The nut may need to be heated in order to remove it during thenext step. Threadlocking adhesive is used on this part during assembly.

7. Pull the piston/shaft assembly from the air cylinder. Place a wrenchon the flats (16) of the shaft (17). Use another wrench to remove thenut (18). Remove the piston (19) and O-ring (20) from the shaft.

8. Remove the U-cup seal (21) from the lower cylinder head.

9. Inspect all air motor components and replace if damaged or worn.Replace all O-rings and seals.



334607CIssued 3/05

Disassemble the Air Motor (contd)

2317008A

14

2

10

11

12

5

6

21

13

15

9

18

19

20

173

8

71

4

16

Fig. 7 Partial Air Motor Assembly, Exploded View

1. Upper push rod2. Lower push rod3. Spool4. O-ring5. Hex nut6. Lock washer7. Hex head screw

8. Cylinder head (upper)9. O-ring10. Socket head screw11. Lock washer12. Back-up plate13. Cylinder head (lower)14. Air cylinder

15. O-ring16. Flats17. Shaft18. Nut19. Piston20. O-ring21. U-cup seal



334607CIssued 3/05

Assemble the Air Motor

NOTE: This procedure covers three types of air motors. Differences indata are noted as necessary.

1. 7- and 10-Inch Air Motors: Lubricate all O-rings with a compatibleO-ring lubricant before installation.

10-Inch Oil-Less Air Motor: Lubricate all O-rings with TFE greasebefore installation.

2. See Figure 7. Install the new O-ring (20) on the shaft (17). Install thepiston (19) on the shaft. Apply a few drops of thread lockingcompound to the shaft threads. Install and tighten the nut (18) on theshaft.

3. 7- and 10-Inch Air Motors: Lubricate the piston seal and the innersurface of the air cylinder (14) with O-ring grease.

10-Inch Oil-Less Air Motor: Lubricate the piston seal and the innersurface of the air cylinder (14) with TFE grease.

Slide the piston into the air cylinder at an angle. Center the pistonwhen it is well within the air cylinder.

4. Install the O-ring (9) in the upper cylinder head (8). Place the aircylinder and piston assembly on a flat surface with the shaft pointingupward.

5. 7- and 10-Inch Air Motors: Lubricate a new U-cup seal (21) withO-ring grease.

10-Inch Oil-Less Air Motor: Lubricate a new U-cup seal (21) withTFE grease.

Insert the U-cup seal into the lower cylinder head (13) so that theopen part of the U is facing toward the cylinder head. Carefully pressthe U-cup seal into place.

6. Install the back-up plate (12), four socket head screws (10), and lockwashers (11) on the lower cylinder head.

CAUTION: In the following step, you must install the lowercylinder head carefully so that you do not damage the U-cupseal.

NOTE: You may have to rock the lower cylinder head gently to get theU-cup seal over the shaft.

7. Install the O-ring (15) in the lower cylinder head. Install the lowercylinder head and O-ring on the air cylinder.

8. Carefully align and install the upper cylinder head on the air cylinder.Lay the assembly flat with the shaft horizontal on a work table.Install, but do not tighten, the long hex head screws (7), lockwashers (6), and hex nuts (5).



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Assemble the Air Motor (contd)

9. Install the O-ring (4) on the upper push rod (1) and slide the push rodthrough the bushing in the upper cylinder head. Slide the spool (3)onto the upper push rod and apply threadlocking compound on therod threads. Perform the next step immediately.

NOTE: You may have to rotate the lower cylinder head slightly, withrespect to the upper cylinder head, so that the push rod assembly movesfreely.

10. Slide the lower push rod (2) through the bushing in the lower cylinderhead. Use wrenches on the flats of the upper and lower push rods totighten them securely.

11. Tighten the long hex head screws (7), hex nuts (5) andlock washers (6) evenly. Tighten both the hex head screws and hexnuts to 162.7--169.5 Nm (120--125 ft-lb). Check that the push rodsmove freely.

12. Install the air valve as described in this section.

Install the Air Motor onto a Bolt Together Pump

See Figure 5. Follow these procedures to install the air motor onto a bolttogether pump.

1. Lift the air motor (1) onto the mounting plate (2) and slide the shaftthrough the center hole. Install the spacers (3) between the air motorand the mounting plate.

2. Apply thread locking compound on the threads of the hex headscrews (4). Install (but do not tighten) the hex head screws and lockwashers (5) in the bottom of the mounting plate so that they threadinto the lower cylinder head (6).

3. Move the air motor shaft (7) toward the hydraulic plunger (8). Installand tighten the coupling (9). Tighten the hex head screws (4).

NOTE: As you perform the next step, make sure you install thetwo-piece shifter arm (10) on the air motor shaft so that the arm ridesbetween the collars (11) of the lower push rod (12).

4. Install the two hex head screws (13), lock washers (14), and nuts (15)to mount the two-piece shifter arm on the air motor shaft.

5. Connect the supply air hose to the air valve fitting, using PTFE tapeto seal the threads.

6. Turn on the air supply and start the pump. Check the pump forproper operation.



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Install the Air Motor onto a Screw Together Pump

See Figure 6. Follow these procedures to install the air motor onto ascrew together pump.

1. Lift the air motor (1) onto the mounting plate (2) and slide the shaftthrough the center hole.

2. Install the three connecting rods (3) and tighten to204--240 Nm (150--155 ft-lb).

3. Lower the elevator to engage the connecting rods with the pump andinstall but do not tighten the three hex nuts (4).

4. Move the air motor shaft (5) toward the hydraulic pump plunger (9).Install and tighten the coupling (8).

5. Tighten the three hex nuts to 204--240 Nm (150--155 ft-lb).

NOTE: As you perform the next step, make sure you install thetwo-piece shifter arm (7) on the air motor shaft so that the arm ridesbetween the collars (11) of the lower push rod (10).

6. Install the two hex head screws (12), lock washers (13), and nuts (14)to mount the two-piece shifter arm on the air motor shaft.

7. Connect the supply air hose to the air valve fitting, using PTFE tapeto seal the threads.

8. Turn on the air supply and start the pump. Check the pump forproper operation.



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PartsTo order parts, call the Nordson Customer Service Center or your localNordson representative. Use this five-column parts list, and theaccompanying illustration, to describe and locate parts correctly.

Air Valve

See Figure 8 and the following parts list.

12

3

45

67

2526

15

14

16

8

24

23

22

21

20

13

12

17

18

19

9

11

13

2317003A

2625

10

9

Fig. 8 Air Valve, Exploded View



334607CIssued 3/05

Item Part Description Qty Note— 248843 Valve, air 1

1 981499 S Screw, socket head, M6 x 40 8

2 248841 S Cap, poppet 2

3 248839 S Washer, seal, poppet 2 A


5 248842 S Poppet 2

6 940101 S O-ring, Viton, 0.250 x 0.375 x 0.063 2 A

7 941282 S O-ring, Viton-encapsulated, Buna-N, 1.5 x 1.68 x 0.09 2 A

8 248844 S Body, valve 1

9 982364 S Screw, socket head, cap, M6 x 12 2

10 236022 S Pivot, snapper 1

11 236023 S Snapper 1

12 247232 S Crankshaft 1

13 940154 S O-Ring, Buna-N, 0.563 x 0.688 x 0.063 2 A

14 323575 S Bushing, end, crankshaft 1

15 323043 S Washer, seal 1 A

16 981255 S Screw, socket head, 1/4-28 x 0.75, Nylok 1

17 323477 S Stem, ball 1

18 323478 S Spring, compression, 3.625 x 0.385 x 0.080 1

19 323476 S Fork 1


21 323472 S Bracket, snapper 1

22 323470 S Gasket, air valve 1 A

23 247233 S Arm 1

24 248840 S Spool, poppet 1

25 983034 S Washer, flat 2

26 983409 S Washer, lock 2

NS 900278 S Lubricant, moly disulfide, 1 gallon 1

NS 900223 S Lubricant, O-ring AR B

NS 1031834 S Grease, TFE, 1 gallon AR C

NS 900439 S Adhesive, threadlocking AR

NOTE A: These parts are included in the air valve seal kit, part 106 448.

B: Use this lubricant on 7- and 10-inch air motors.

C: Use this lubricant on the oil-less air motor.

NS: Not Shown

AR: As Required



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Air Motors

See Figure 9 and the following part list. Figure 9 is used as a referencefor both the 7-inch and 10-inch air motor parts lists. The cylinder headsfor the 10-inch air motor differ slightly from the illustration. Be careful tonote part numbers and quantities of items based on which size air motoryou use.

2

25

2317004A

18

1

17

2627

23

22

21

7

8

20

19

10

10

12

13

14

1511

9

166

5

12

31

30

36

2928

32

34

33

3

4

24

31

35

Fig. 9 7-Inch Air Motor (10-Inch Air Motor Reference), Exploded View



334607CIssued 3/05

Item Part Part Part Description Qty Note

— 124702 Motor, air, 7-inch 1


— 1032469 Motor, air, 10-inch, oil-less 1

1 323420 323420 323420 S Collar 3

2 985407 985407 985407 S Pin, Spirol, medium, 0.188 x 0.750 3

3 323421 323421 323421 S Rod, push 1

4 945004 945004 945004 S O-ring, 0.531 x 0.187 1

5 248845 248845 248845 S Bolt, eye, 3/8-16 x 1.25 1

6 132154 132154 132154 S Stud, ground 1

7 984716 984716 984716 S Nut, hex, M16, steel, zinc 4 or 6 A

8 983419 983419 983419 S Washer, lock, M, split, M16, steel, zinc 4 or 6 A

9 249093 - - - - - - - - - - - - S Head, cylinder, upper, 7-inch 1

9 - - - - - - 249084 249084 S Head, cylinder, upper, 10-inch 1

10 942611 - - - - - - - - - - - - S O-ring, Buna-N, 6.75 x 7.0 x 0.125 2

10 - - - - - - 942730 942730 S O-ring, hotpaint, 9.75 x 10.0 x 0.125 2

11 323418 323418 323418 S Spool 1

12 984176 984176 984176 S Nut, hex, h.s., steel, zinc, 1 1/2 1

13 249091 - - - - - - - - - - - - S Piston, air motor, 180D 1

13 - - - - - - 249081 - - - - - - S Piston, air motor, 360D 1

13 - - - - - - - - - - - - 1031541 S Piston, air motor, 360D, carbon nitrile 1

14 941250 941250 941250 S O-ring, hotpaint, 1.313 x 1.5 x 0.094 1

15 124677 124677 124677 S Rod, connecting, piston 1

16 982185 982185 982185 S Screw, hex, cap, M16 x 240, bk 4 or 6 A

17 124700 124700 124700 S Rod, push 1

18 249089 - - - - - - - - - - - - S Cylinder, air, 7-inch 1

18 - - - - - - 249082 249082 S Cylinder, air, 10-inch 1

19 249095 - - - - - - - - - - - - S Head, cylinder, lower, 7-inch 1

NOTE A: Order a quantity of 4 of this item for 7-inch air motors, part 124702. Order a quantity of 6 of this item for 10-inchair motors, part 124701.

Continued on next page



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Item Part Part Part Description Qty Note



— 1032469 Motor, air, 10-inch, oil-less 1

19 - - - - - - 249086 249086 S Head, cylinder, lower, 10-inch 1

20 952101 952101 952101 S Cup, U, polyurethane,1 3/16 x 1 11/16 1 B

21 249076 249076 249076 S Plate, back-up 1

22 983409 983409 983409 S Washer, lock, M, split, M6, steel, zinc 4

23 982176 982176 982176 S Screw, socket head, M6 x 16, bl 4

24 982049 982049 982049 S Screw, hex, cap, M8 x 25, bl 2

25 249088 - - - - - - - - - - - - S Arm, shifter, 7-inch (half) 2

25 - - - - - - 249077 249077 S Arm, shifter, 10-inch 2


27 984707 984707 984707 S Nut, hex, M8, steel, zinc 2

28 982292 982292 982292 S Screw, socket head, M6 x 55, bl 4

29 249078 249078 249078 S Block, muffler 1

30 248843 248843 248843 S Valve, air 1 C

31 941201 941201 941201 S O-ring, Viton, 1.0 x 1.18 x 0.094 2 D

32 982293 982293 982293 S Screw, socket, M6 x 65, bl 4

33 982000 982000 982000 S Screw, pan, slot, M5 x 10, zinc 2


35 - - - - - - - - - - - - - - - - - - S Cover, air valve 1

36 - - - - - - - - - - - - - - - - - - S Cover, air valve side guard 1

NS 900223 900223 - - - - - - S Lubricant, O-ring, Parker, 4-oz 1 E

NS - - - - - - - - - - - - 1031834 S Grease, TFE, 1 gallon 1 F

NS - - - - - - - - - - - - 900349 S Grease, TFE, cartridge, 0.75 oz. 1 F

NS 900439 900439 900439 S Adhesive, threadlocking 1

NOTE B: Nordson Corporation recommends purchasing this item as a spare part.

C: See Figure 8 for the breakdown of this subassembly.

D: This part is included in the air valve seal kit, part 106448.

NOTE E: Use this lubricant on 7- and 10-inch air motors.

NOTE F: Use this lubricant on the 10-inch oil-less air motor.

AR: As Required

NS: Not Shown



334607CIssued 3/05

Service Kits

The following service kits are avaialable for the air motors.

Air Valve Seal

See Figure 8. Nordson Corporation recommends that you purchase oneair valve seal kit as a spare part.

Item Part Description Qty Note— 106448 Kit, air valve seal 1

3 248839 S Washer, seal, poppet 2

6 940101 S O-ring, Viton, 0.250 x 0.375 x 0.063 2

7 941282 S O-ring, encapsulated Viton, 1.500 x 1.688 2

14 940154 S O-ring, Buna-N, 0.563 x 0.688 x 0.063 2

16 323043 S Washer, seal 1

23 323470 S Gasket, air valve 1

7-Inch Air Motor

See Figure 9. Nordson Corporation recommends that you purchase one7-inch air motor kit as a spare part.

Item Part Description Qty Note— 142441 Kit, Rhino, 7-inch air motor 1

10 942611 S O-ring, Buna-N, 6.75 x 7.0 x 0.125 2

13 249091 S Piston, air motor, 180D 1

14 941250 S O-ring, hotpaint, 1.313 x 1.5 x 0.094 1

20 952101 S Cup, U, polyurethane,1 3/16 x 1 11/16 1

31 941201 S O-ring, Viton, 1.0 x 1.188 x 0.094 2

10-Inch Air Motor

See Figure 9. Nordson Corporation recommends that you purchase one10-inch air motor kit as a spare part.

Item Part Description Qty Note— 143337 Kit, Rhino, 10-inch air motor 1


13 249081 S Piston, air motor, 360D 1


20 952101 S Cup, U, polyurethane,1 3/16 x 1 11/16 1

31 941201 S O-ring, Viton, 1.0 x 1.188 x 0.094 2



334607CIssued 3/05

Documents

7- and 10-Inch Air Motors with Air Valveemanuals.nordson.com/automotive/zfiles/334607c.pdf · Fig. 2 10-Inch Air Motor Air Consumption Maintenance On a daily basis, check the vitalizer