PUMP GP-PISTON 1555109 - Caterpillar

Disassemble Governor
FLUID SPILLAGE CONTAINMENTCare must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to "TOOLS AND SHOP PRODUCT GUIDE, NENG2500", for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates. The fuel injection pump housing & governor does nothave to removed from the engine to disassemble the governor. The fuel injection pump housing & governor have been removed from the engine to disassemble the governor for photographic purposes. 1. Remove plug (1) from the fuel injection pump housing. 2. Install Tool (A) into the fuel injection pump housing with the square end down. Use a small amount of hand force to push down on Tool (A) while the fuel control lever is moved forward to the "FUEL ON" position until Tool (A) seats itself. The fuel rack will stop in the center "zero" position. 3. Remove wire tie (2). 4. Remove five bolts and washers (3) fastening adapter group (4) to housing assembly (5). 5. Remove gasket (6) from housing assembly (5). 6. Remove seven bolts (7) fastening housing assembly (5) to plate group (8).
There is spring force under collar (9). Remove socket head bolt (10) slowly while holding collar (9) in place to allow the spring force to be released gradually.
7. Remove socket head bolt (10) from collar (9) while holding collar (9) in place to prevent sudden release of the spring force.8. Remove spring (11). 9. If necessary, remove nut and screw (12) from collar (9). 10. Remove gasket (13) from the bottom of housing (5). 11. Remove locknut (14). 12. Remove cotter pin and pin (15). 13. Remove throttle control rod (16) from bracket (17). 14. Remove locknut (18) from throttle control rod (16).15. Remove spacer and spring (19) from throttle control rod (16).
Shaft (20) is under spring force. Remove shaft (20) from handle (21) slowly while holding shaft (29) in place to prevent possible personal injury.
16. Remove shaft (20) from handle (21) by turning counterclockwise.17. Remove the spring from shaft (20).18. Remove handle (21) from guide (22).19. Remove two screws (23) from bracket (17). 20. Remove guide (22), quadrant control (24), hub (25), ratchet (26) and bracket (17) from the shaft. 21. Remove two socket head bolts (27).22. Remove lock (28).23. Remove retainer (29).24. Remove insulator (30).25. Remove contact (31).26. Remove retainer (32).27. Remove shim (33).28. Remove bar (34).29. Remove insulator (35).30. Remove cover (36).31. Remove bolt (37) and cover (38). 32. Remove gasket (40). Mark locations of idle screws (39) and (41) prior to removal from the housing.33. Make alignment mark on high idle screw (39) and remove high idle screw (39) counting the number of turns until removed.34. Make alignment mark on low idle screw (41) and remove low idle screw (41) counting the number of turns until removed.