TH220B and TH330B Telehandlers Machine Systems Caterpillar

Disassembly Procedure

Start By:

1. Remove the main control valve. Refer to Disassembly and Assembly, "Main Control Valve (Implement) - Remove".

Note: Mark the position of the valves for assembly purposes.

Show/hide table

Illustration 1	g01120201

1. Remove bolts (1) in order to remove electronic pilot valve (2) from bank valve (3).
   Show/hide table

   Illustration 2	g01120209

2. Position bank valve (3). Remove locknuts (4) in order to remove manifold (5).
   Show/hide table

   Illustration 3	g00949065

3. Position manifold (5) in a suitable vise and remove valve assembly (6).
   Show/hide table

   Illustration 4	g01120229

4. Remove O-ring seals (7), backup rings (8), and O-ring seal (9) from valve assembly (6).
   Show/hide table

   Illustration 5	g01120230

5. Remove O-ring seals (10), O-ring seal (11), and O-ring seal (12) from control valve (13).
   Show/hide table

   Illustration 6	g00949159

6. Slide control valve (13) off studs (14) and control valve (15).
   Show/hide table

   Illustration 7	g01120231

7. Position control valve (13) in a suitable vise. Remove plug (16) and O-ring seal (17) (not shown).
   Show/hide table

   Illustration 8	g00949200

8. Remove spool (18) from control valve (13).
   Show/hide table

   Illustration 9	g00949203

9. Remove plug (19) from control valve (13). Remove O-ring seal (20), backup ring (21) and O-ring seal (22) from plug (19). Repeat for the opposite side.
   Show/hide table

   Illustration 10	g00949207

10. Remove valve assembly (23) from control valve (13). Repeat for the opposite side.
    Show/hide table

    Illustration 11	g00949209

11. Remove bolts (24) in order to remove cover (25) from control valve (13).
    Show/hide table

    Illustration 12	g01120236

12. Remove O-ring seal (26) and O-ring seal (27) from cover (25). Remove screw (28) and sealing nut (29).
    Show/hide table

    Illustration 13	g00949212

13. Slide valve spool (30) out of control valve (13).
    Show/hide table

    Illustration 14	g01120241

    Show/hide table

    Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

14. Remove retainer (31), collars (32), and spring (33) from valve spool (30).
    Show/hide table

    Illustration 15	g01120248

15. Remove O-ring seals (34), O-ring seal (35), and O-ring seal (36) from control valve (15).
    Show/hide table

    Illustration 16	g00949394

16. Slide control valve (15) off studs (14) and control valve (37).
    Show/hide table

    Illustration 17	g01120252

17. Position control valve (15) in a suitable vise. Remove plug (38) and O-ring seal (39) (not shown).
    Show/hide table

    Illustration 18	g00949396

18. Remove spool (40) from control valve (15).
    Show/hide table

    Illustration 19	g00949397

19. Remove valve assembly (41) from control valve (15). Repeat for the opposite side.
    Show/hide table

    Illustration 20	g01120259

20. Remove O-ring seal (42), backup ring (43), and O-ring seal (44) from valve assembly (41). Repeat the procedure for the second valve assembly.
    Show/hide table

    Illustration 21	g00949399

21. Remove check valve (45) from control valve (15). Repeat for the opposite side.
    Show/hide table

    Illustration 22	g00949400

22. Remove bolts (46) in order to remove cover (47) from control valve (15).
    Show/hide table

    Illustration 23	g00949401

23. Remove O-ring seal (48) and O-ring seal (49) from cover (47).
    Show/hide table

    Illustration 24	g00949402

24. Remove valve spool (50) from control valve (15).
    Show/hide table

    Illustration 25	g01120262

    Show/hide table

    Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

25. Remove retainer (53), collars (52), and spring (51) from valve spool (50).
    Show/hide table

    Illustration 26	g01120270

26. Remove O-ring seals (54), O-ring seal (55), and O-ring seal (56) from control valve (37).
    Show/hide table

    Illustration 27	g00949416

27. Slide control valve (37) off studs (14) and control valve (57).

28. Refer to Steps 17 through 25 for the procedure to disassemble control valve (37).
    Show/hide table

    Illustration 28	g01120272

29. Remove O-ring seals (58), O-ring seal (59), and O-ring seal (60) from control valve (57).
    Show/hide table

    Illustration 29	g00949418

30. Slide control valve (57) off studs (14) and manifold (61).

31. Refer to Steps 7 through 14 for the procedure to disassemble control valve (57).
    Show/hide table

    Illustration 30	g01120276

32. Remove O-ring seals (62), O-ring seal (63), and O-ring seal (64) from manifold (61).
    Show/hide table

    Illustration 31	g00949422

33. Position manifold (61) in a suitable vise. Remove valve assembly (65) from manifold (61).
    Show/hide table

    Illustration 32	g00949429

34. Remove O-ring seal (66), backup ring (67), and O-ring seal (68) from valve assembly (65).
    Show/hide table

    Illustration 33	g00949423

35. Remove valve assembly (69) from manifold (61).
    Show/hide table

    Illustration 34	g01120282

36. Remove O-ring seal (70), backup ring (71), and O-ring seal (72) from valve assembly (69).
    Show/hide table

    Illustration 35	g00949426

37. Remove cap (73) from manifold (61).
    Show/hide table

    Illustration 36	g01120287

    Show/hide table

    Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

38. Remove O-ring seal (74) from cap (73). Remove valve spool (75), spring (76), guide (77), and shims (78).