SEAL 1990598 - Caterpillar

Disassembly Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1P-0074     Slide Hammer Puller Gp     1    Start By:
Remove the gerotor motor. Refer to Disassembly and Assembly, "Gerotor Motor (Circle Drive) - Remove" for the correct procedure.
Illustration 1 g00635481
Note: Cleanliness is an important factor. Make sure that the component is clean and free of foreign material prior to the disassembly procedure.
Remove bolts (1) and cover (2) from the motor assembly. Remove the O-ring seal from cover (2).
Illustration 2 g00635483
Remove outer cover plate (3) and inner plate (4) from the motor assembly.
Illustration 3 g00635484
Remove seal (5) from inner plate (4).
Illustration 4 g00635485
Remove manifold (6) from the motor assembly. Remove the O-ring seals that are on both sides of manifold (6) .
Illustration 5 g00992952
Remove outer rotor (7) with the O-ring seal (not shown). Remove the O-ring seal from outer rotor (7).
Remove pins (8) and inner rotor (9) from the motor assembly.
Illustration 6 g00635487
Remove spacer (10) from the motor assembly.
Illustration 7 g00635489
Remove link (11) and bearing (12) from the motor assembly.
Illustration 8 g00926228
Remove shaft (16). If the gerotor motor (circle drive) is equipped with needle bearing (13), use Tooling (A) (not shown) in order to remove needle bearing (13). Remove two races (15) and bearing (14) from the motor assembly.
Illustration 9 g00926500
Illustration 10 g00926498
Remove lip seal (17). Use Tooling (A) in order to remove bearing (18) from the motor assembly.
Illustration 11 g00926499
Illustration 12 g00926979
Remove backup ring (19) and the shim from the motor assembly. Remove lip seal (20). Remove O-ring seal (21) from the motor assembly.