GEAR-DRIVE 7W0140 - Caterpillar

Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-1854 Retaining Ring Pliers 1
B - Plate
50.8 mm (2 inches) by 102 mm (4 inches) by 6 mm (0.25 inches) 2
C 1P-1857 Retaining Ring Pliers 1
D - Allen Wrench (5/16 inch) 1
E - Tube 1
F 1P-0510 Driver Group 1
G 454-0291 Bearing Lubricant -
H - Loctite Graphite Anti-Seize 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: Apply Tooling (G) to all bearings and the drive assembly. Apply a thin layer of clean engine oil to all other parts before assembly.
Illustration 1 g03482796
Install the O-ring seals on cylinder (53). Install cylinder (53) in motor housing (1). Ensure that pin (54) is in alignment with slot (55) in motor housing (1).
Illustration 2 g03483100
Install O-ring seals (52) on cylinder (53).
Illustration 3 g03483180
Install O-ring seal (51) on the rotor (48).
Illustration 4 g03483238
Use a suitable press to install bearing (49) and end plate (50) on rotor (49).
Illustration 5 g03483291
Install nut (43) on the rotor shaft with the shoulder toward the bearing.
Illustration 6 g01285272
Tighten nut (43) until there is 0.03 to 0.08 mm (0.001 to 0.003 inch) of clearance between the end plate and the rotor. Use a feeler gauge to check the clearance. Tighten bolt (44). Check the clearance again.
Illustration 7 g03483444
Install rotor (48) in motor housing (1) with the pinion end of the rotor toward the cylinder alignment pin. Ensure that pin (54) is in alignment with the hole in the end plate.
Illustration 8 g03483988
Install vanes (58) in the rotor.
Illustration 9 g03483476
Install end plate (47) on the rotor. Ensure that hole (56) in the end plate is in alignment with pin (57).
Illustration 10 g03483517
Install spring washers (46) in the end plate (47).
Illustration 11 g03483536
Install bearing (45) in end plate (47).
Illustration 12 g01284858
Install rotor pinion (41) and bolt (42) on the rotor shaft. Tighten the bolt to a torque of 120 N m (90 lb ft).
Illustration 13 g01284390
Install the O-ring seal on the motor housing. Position cover assembly (40) on motor housing (1).
Illustration 14 g01284263
Put bearing (32) and retaining ring (31) in position on drive shaft assembly (15).
Illustration 15 g00540515
Tooling (E)
Use Tooling (E) and a suitable press to install the retaining ring on the drive shaft.
Illustration 16 g01284258
Improper assembly of parts that are spring loaded can cause bodily injury.To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Place bolt (22), lockwasher (23), washer (24), bearing (25), driving clutch jaw (26), driven clutch jaw (27), spring (28), and cup (29) in position on drive shaft assembly (15). Install retaining ring (30) on the drive shaft assembly.
Illustration 17 g01285295
Illustration 18 g01284252
Use Tooling (F) to install seal (19) in piston (12). Ensure that the lip of the seal is toward the outside of the piston.Note: Later air starting motors will not have bumper (20).
Install O-ring seal (21) and bumper (20) on piston (12).
Illustration 19 g01284251
Install piston (12) on drive shaft assembly (15). Install retaining ring (18) that holds the piston to the shaft assembly.
Illustration 20 g01284233
Install O-ring seals (17) on bulkhead (16).
Install bulkhead (16) on piston (12).
Illustration 21 g01284231
Install drive gear