SEAL-O-RING 4908747 - Caterpillar

14. Remove seals (24) from cover (23). 15. Remove plate (25) from the cartridge. 16. Remove ring (26) and rotor assembly (27) from the plate. 17. Remove vanes (29) from the rotor.18. Remove inserts (28) from the vanes. 19. Remove plate (30) from the end plate. 20. Remove seals (31) from end plate (32). 21. Remove the O-ring seal and backup seal (33) from the plate. 22. Remove body assembly (34) from body (35). 23. Remove cartridge assembly (36) from the shaft. 24. Remove seal ring (37) from the housing.25. Remove spiral ring (38) and remove the shaft assembly and the washer from the housing. Use Driver Group (B) to remove the lip type seals from the housing. 26. Remove snap ring (39) with Pliers (A).27. Remove bearing (41) from shaft (40). 28. Remove washer (42) from the housing. Make a note of the direction of the arrows that are nearest bolts (44) and the direction of the arrow on the ring for assembly purposes.29. Remove bolts (44) and plate (43) from the cartridge. 30. Remove seals (45) from plate (43). 31. Remove plate (46) from the cartridge. 32. Remove ring (47) and rotor assembly (48).33. Remove the plate that is under the rotor. 34. Remove vanes (50) and inserts (49) from the rotor. 35. Remove seals (51) from plate (52). 36. Remove seals (53) from the plate.Assemble Pilot And Hydraulic Pump
1. Inspect all parts for wear or damage. Make replacements as necessary. Put clean oil on all parts at assembly.2. Install O-ring seal (53) and the backup ring on the plate. 3. Install seal assemblies (51) on the plate. 4. Install plate (46) with the brass side toward the rotor.
Vanes (50) must be installed as described or improper operation will result.
5. Install inserts (49) and vanes (50) in rotor (48). Install the vanes with the leading edge (sharp edge) at the outside diameter and in the same direction as the rotation of the rotor. 6. Put ring (47) in position on the plate. The arrow on the chamfer of ring (47) must be in the same direction as the rotation of the rotor. 7. Install plate (46) with the brass side toward the rotor. 8. Install seal assemblies (45) on plate (43). 9. Put plate (43) in position. Install the bolts in the holes that are nearest the arrows that are in the same direction as the arrows on the ring. 10. Use Driver Group (A) to install the lip type seal in the housing as shown. 11. Turn the housing over and install the other lip type seal with Driver Group (A). Install the seal with the lip down, as shown. 12. Put washer (42) in the housing. 13. Install bearing (41) on shaft (40).14. Use Pliers (B) to install snap ring (39). 15. Put the shaft assembly in position in the housing.16. Install spiral ring (38) to hold the shaft assembly in the housing.17. Install seal ring (37). 18. Install cartridge (36) in the housing.19.