CYLINDER GP-BULLDOZER LIFT 2618004 - Caterpillar

1. Remove four bolts (1). Remove cover (2). 2. Remove O-ring seal (3) from the cover and remove cartridge assembly (4). Put a mark on cartridge assembly for correct assembly.
When cartridge is apart, vanes and inserts are free to slide out of rotor and can be damaged if they fall.
3. Loosen two screws (14). Take apart components of cartridge assembly.4. Remove back-up rings (5) and O-ring seals (11) from pressure plate (6). Remove pins (7).5. Remove vanes (8) and inserts (12) from rotor (13). Remove the rotor from ring (9).6. Remove two screws (14) from wear plate (15).7. Clean all metal parts in clean nonflammable solvent.8. Install back-up rings (5) and O-ring seals (11) on pressure plate (6). Install the back-up rings with the (concave) faces (part of the ring which makes a curve to the inside) toward the O-ring seals and the O-ring seals toward each other. Install two pins (7). 9. Passage (16) in ring (9) and passages (17) in rotor (13) are at an angle in direction of rotation.10. Install inserts (12) and vanes (8) in rotor (13) so the sharp edge of the vane is toward direction of rotation.11. Install the rotor in ring (9) so vanes are in direction of rotation (10) shown on the ring.12. Install two screws (14) in wear plate (15). Assemble components of cartridge group and use marks for correct assembly. Tighten two screws. Large Pump Section 13. Remove four bolts (18) and remove cover (19). 14. Hold cartridge assembly (21) and lightly use a plastic hammer to remove cartridge assembly from body (22) and shaft (20). 15. Put a mark on cartridge assembly for correct assembly. Loosen two screws (24) and make a separation of components of cartridge assembly.16. Disassemble and assemble cartridge components: wear plate (23), ring (25) and pressure plate (26) in the same way as in Small Pump Section. 17. Remove retaining ring (27). Remove shaft (20) and bearing (29) from body (28). 18. Remove washer (30), lip seal (32) and wiper (31) from the body. 19. Remove snap ring (33) and remove bearing (29) from the shaft.20. Clean all metal parts in clean nonflammable solvent.21. Install bearing (29) on shaft (20). Install snap ring (33).22. Install wiper (31) and lip seal (32) in body (28). Lip of lip seal must be toward bearing. Install washer (30).23. Install shaft (20) and bearing (29) in the body. Install retaining ring (27).24. Install large cartridge assembly (21) on the shaft and into the body. Install O-ring seal that goes between body and cover (not shown).25. Install cover (19) with the marks in alignment for correct assembly.26. Install four bolts (18) and tighten bolts to a torque of 265 10 lb.ft. (360 14 N m).27. Install small cartridge assembly (4). Install O-ring seal (3) in cover (2).28. Install the cover with marks in correct alignment. Install four bolts (1) and tighten to a torque of 70 5 lb.ft. (95 7 N m).end by:a) install