HARNESS AS-LIGHTING 3527484 - Caterpillar

1. Remove seven screws (1) and control valve (2) with the gasket. Check the gasket for wear or damage and replace, if necessary. 2. Remove two plugs (3). Check the seal on the plugs for wear or damage and replace if necessary. 3. Remove relief valves (4) and springs (5). 4. Remove seven screws (6) and cover (7) with the gasket. Inspect the gasket for wear or damage and replace, if necessary. 5. Remove two screws (8) and remove cover (9) with the gasket. Check the gasket for wear or damage and replace, if necessary. 6. Remove charge relief plug (10). After removing any plug, check the seals for wear or damage and replace, if necessary. 7. Remove charge relief poppet (11) and spring (12). There are shims between the plug and the spring. 8. Remove plug (13). 9. Remove spring (14) and spool (15). 10. Remove retaining ring (16). 11. Remove seven screws (17) and cover (18) with the gasket. Check the gasket for wear or damage and replace, if necessary. 12. Remove two O-rings (19) and locating pins (20).13. Remove gerotor assembly (21). 14. Remove coupling (22) with pin (23) from the gerotor. 15. Remove gerotor (24) and gerotor ring (25).16. Remove locating pin (26). 17. Use a hammer and soft punch to remove shaft assembly (27) from the housing. 18. Remove O-ring (28). Inspect the O-ring for wear or damage and replace, if necessary.19. Remove seal cover (29). 20. Remove seal (30) from seal cover (29). Check the seal for wear or damage and replace, if necessary. 21. Remove retaining ring (31).22. Use a suitable puller to remove bearing (32). 23. Remove six screws (33) and cover (34) with the gasket. Check the gasket for wear or damage and replace, if necessary. 24. Use a suitable puller to remove bearing (35). Check the bearing for wear or damage and replace if necessary. 25. Remove cylinder block assembly (36) from the pump housing. 26. Remove pistons (37), retaining ring (38) and gear washer (39). 27. Remove three pins (40) and pin guide (41).
Cylinder Block Components.
(37) Pistons. (38) Retainer. (39) Gear washer. (41) Pin guide. (40) Pins. 28. Remove swashplate (42), slipper plate (43) and locating pin (44). 29. Remove control link (45). 30. Remove screw (46).31. Remove feedback link (47) and neutral link (48). 32. Remove neutral adjust screw (49).33. Remove five screws (50) and cover (51) with gasket. Check the gasket for wear or damage and replace, if necessary. The servo piston will come out attached to cover (51) by the setscrew. 34. Remove nut (52) and turn cover (51) to remove the cover from servo piston (53).35. Check O-rings (54) and backup rings on the servo piston for wear or damage and replace, if necessary. To reassemble the emulsion system hydraulic pump, reverse the disassembly steps.End By:a. Install the emulsion hydraulic pump.