D399, G399, D398, G398, D379, G379 ENGINES Caterpillar


Air Starting Motor

Usage:

Remove Air Starting Motor

1. Close the outlet valve on the air tank and remove air line between the air tank and the pressure regulating valve (5).

2. Remove exhaust elbow (2) and silencer (1).

3. Remove inlet elbow bolts (3) and U-bolt (7).

4. Remove pressure regulating valve (5), balanced whistle valve (4), oiler (6) and inlet elbow as a unit.

5. Install a 1/2"-13 NC forged eyebolt and install hoist.

6. Remove air starting motor. Weight is 82 lbs. (37,2 kg).

Install Air Starting Motor

1. Install air starting motor.

2. Install pressure regulating valve (5), balanced whistle valve (4), oiler (6) and inlet elbow as a unit.

3. Install exhaust elbow (2) and silencer (1).

4. Install air line between the pressure regulating valve and the air tank.

5. Open the outlet valve on the air tank.

Disassemble Air Starting Motor

start by:

a) remove air starting motor

1. Put marks on parts to make alignment during assembly easier.

2. Remove bolts (2) and remove drive housing (1).

3. Remove ring (4) and screw (6).

4. Remove drive (5).

5. Remove socket head screws (7) and remove cover (8).

6. Bend lockwasher (13) and remove nut (14) using tool (C).

7. Remove gear (12).

8. Remove retainer (11) and push shaft (9) out of bearing (10).

9. Push bearing (10) out of cover (8).

10. Remove bolts (17) and (18) and remove gear housing (19).

11. Remove cover (3).

12. Bend lockwasher and remove nut using tool (C).

13. Remove plate assembly (16) and bearing (15) using tool setup (A).

14. Remove air motor housing.

15. Remove vanes (22) from rotor (24).

16. Bend lockwasher (21) and remove nut (23) using tool (C).

17. Remove gear (26) using tool (B).

18. Remove ring (20) and bearing (25).

Assemble Air Starting Motor

See AIR STARTING MOTOR, TESTING AND ADJUSTING to make rotor clearance adjustment.

NOTE: Assemble parts with marks in alignment.

1. Install bearing (7) and ring (1).

2. Install gear (6), lockwasher (2) and nut (4).

3. Install vanes (3) into rotor (5).

4. Install air motor housing (9).

5. Install gear housing (8).

6. Install plate assembly (10) and bearing (11).

7. Install lockwasher and nut.

8. Install cover.

9. Install bearing (14) in cover (12).

10. Install shaft (13) and retainer (15).

11. Install gear (16), lockwasher (17) and nut (18).

12. Install cover (12) onto gear housing (8).

13. Install drive (19).

14. Install drive housing.

end by:

a) install air starting motor

Caterpillar Information System:

D399, G399, D398, G398, D379, G379 ENGINES Flexible Coupling
D399, G399, D398, G398, D379, G379 ENGINES 2N6961 Clutch Assembly
D399, G399, D398, G398, D379, G379 ENGINES 1N9318 & 7L135 Governor Air Actuators
D399, G399, D398, G398, D379, G379 ENGINES 2N6006 Governor Air Actuator
D399, G399, D398, G398, D379, G379 ENGINES Engine Attachments Testing And Adjusting
D399, G399, D398, G398, D379, G379 ENGINES Engine Attachments Systems Operation
D399, G399, D398, G398, D379, G379 ENGINES Flywheel And Flywheel Housing
D399, G399, D398, G398, D379, G379 ENGINES Balancer - (D379 Only)
D399, G399, D398, G398, D379, G379 ENGINES Basic Block Components
D399, G399, D398, G398, D379, G379 ENGINES Front Accessory Drive
D399, G399, D398, G398, D379, G379 ENGINES Timing Gears
D399, G399, D398, G398, D379, G379 ENGINES Vibration Damper
D399, G399, D398, G398, D379, G379 ENGINES Governor (Woodward EG-3P) D379 68B1616-Up, D398 66B2049-Up, D399 35B1-Up
D399, G399, D398, G398, D379, G379 ENGINES Governor (Woodward UG-8) D379 68B1616-Up, D398 66B2049-Up, D399 35B1-Up
D399, G399, D398, G398, D379, G379 ENGINES Governor (Woodward UG-8) G379 72B264-403, G398 73B511-795, G399 49C1-172
D399, G399, D398, G398, D379, G379 ENGINES Governor (Woodward EG-3P) G379 72B264-403, G398 73B511-795
D399, G399, D398, G398, D379, G379 ENGINES Governor (Woodward UG-8 And EG-3P) G379 72B404-UP, G398 73B796-UP, G399 49C173-UP
D399, G399, D398, G398, D379, G379 ENGINES Governor (Woodward SGT) D379 68B1616-UP
D399, G399, D398, G398, D379, G379 ENGINES Governor Drive Upper Housing (Woodward Governor)
D399, G399, D398, G398, D379, G379 ENGINES Governor Air Actuators (2N6006, 1N9318, 7L135)
D399, G399, D398, G398, D379, G379 ENGINES Magnetic Pickup
D399, G399, D398, G398, D379, G379 ENGINES Pressure Switches
D399, G399, D398, G398, D379, G379 ENGINES Contactor Switches (Water Temperature)
D399, G399, D398, G398, D379, G379 ENGINES Overspeed Contactor Switch
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