CARTRIDGE GP -A 10R0434 - Caterpillar

13. Remove plug (55), O-ring seal (54) and piston (53) from the motor head group. 14. Remove O-ring (56) from the drive motor. 15. Using a soft faced hammer, remove motor rotating group (57) from the drive motor. 16. Remove cylinder barrel (58) from the motor rotating group. 17. Remove spring (59) and shim (60) from cylinder barrel (58). 18. Remove fourteen screws (61), retaining plate (62), seven piston assemblies (63) and center pin (64) from the motor rotating group. 19. Remove two rings (65) from piston assembly (63). Repeat this step for the remaining six piston assemblies. 20. Remove retaining ring (66) and plate (67). 21. Install the motor rotating group in a press. Use tooling (A) and press shaft (71) from bearing (68), shim (69) and bearing (70). 22. Remove retaining ring (72), back up plate (73) and shaft seal (74) from housing (75). The following steps are for the assembly of the drive motor. 23. Install piston (53), O-ring seal (54) and plug (55) into the motor head group. 24. Install seat (48), valve (49), seat (50), O-ring seal (51) and plug (52). Tighten seal (48) to a torque of 3 N*m (27 lb in) and seat (50) to a torque of 8 N*m (71 lb in). 25. Install seat (44), valve (45), seat (46) and plug (47). Tighten seat (44) to a torque of 3 N*m (27 lb in) and seat (46) to a torque of 8 N*m (71 lb in). 26. Install seat (40), valve (41), seat (42) and plug (43). Tighten seat (40) to a torque of 3 N*m (27 lb in) and seat (42) to a torque of 8 N*m (71 lb in). 27. Install valve sleeve (39), spool (38), spring (37), O-ring seal (36) and plug (35) into the motor head group. 28. Install pin (32), O-ring seal (33) and solenoid plunger assembly (34). 29. Install solenoid (29), O-ring seal (30) and cap (31) on the motor head group. 30. Install two dowels (26). Align piston (53) as shown and install trunnion pin (28) and control plate (27) in motor head group (25). 31. Use Tooling (B) gauge blocks (76) to get a dimension of 45.00 mm (1.772 in).32. Place gauge blocks (76) on Tooling (C) surface plate. Position Tooling (D) over the gauge blocks and zero the indicator. 33. Place bearing (70) and shim (69) onto the surface plate under the indicator. Install the proper thickness shim (69) until the indicator reading is between 0.00 and -0.05 mm (.000 and - .002 in). 34. Using a press and Tooling (E), install the cone of bearing (70) on shaft (71). 35. Install the cup of bearing (70), shim (69) determined in Step 25, and bearing (68). 36. Install plate (67) and retaining ring (66).37. Place the motor rotating group in a press as shown and install a 7/16 -14 X 2 in boltin the end of the shaft. 38. Using a dial torque wrench, check bearing preload. Install proper plate