TH220B and TH330B Telehandlers Machine Systems Caterpillar

Assembly Procedure

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Illustration 1	g00949498

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Illustration 2	g00949426

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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.

1. Position manifold (61) in a suitable vise. Install valve spool (75), spring (76), guide (77), and shims (78) into manifold (61). Install O-ring seal (74) into cap (73). Install cap (73) into manifold (61). Tighten cap (73) to a torque of 100 ± 10 N·m (75 ± 7 lb ft).
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   Illustration 3	g01120282

2. Install O-ring seal (70), backup ring (71) and O-ring seal (72) onto valve assembly (69). Lubricate O-ring seals (70) and (72) and backup ring (71) with the lubricant that is being sealed.
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   Illustration 4	g00949423

3. Install valve assembly (69) into manifold (61). Tighten valve assembly (69) to a torque of 20 ± 2 N·m (15 ± 1 lb ft).
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   Illustration 5	g00949429

4. Install O-ring seal (66), backup ring (67), and O-ring seal (68) onto valve assembly (65). Lubricate O-ring seals (66) and (68) and backup ring (67) with the lubricant that is being sealed.
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   Illustration 6	g00949422

5. Install valve assembly (65) into manifold (61). Tighten valve assembly (65) to a torque of 45 ± 5 N·m (33 ± 3 lb ft).
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   Illustration 7	g01120276

6. Position manifold (61). Install O-ring seals (62), O-ring seal (63), and O-ring seal (64) into manifold (61).
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   Illustration 8	g00949418

7. Install control valve (57) onto studs (14) and manifold (61).

8. Refer to Steps 24 through 31 for the procedure to assemble control valve (57).
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   Illustration 9	g01120272

9. Install O-ring seals (58), O-ring seal (59), and O-ring seal (60) into control valve (57).
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   Illustration 10	g00949416

10. Install control valve (37) onto studs (14) and control valve (57).

11. Refer to Steps 13 through 21 for the procedure to assemble control valve (37).
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    Illustration 11	g00949415

12. Install O-ring seals (54), O-ring seal (55), and O-ring seal (56) into control valve (37).
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    Illustration 12	g01120262

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    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.

13. Install retainer (53), collars (52), and spring (51) onto valve spool (50).
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    Illustration 13	g00949402

14. Position control valve (15) in a suitable vise. Install valve spool (50) into control valve (15).
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    Illustration 14	g00949401

15. Install O-ring seal (48) and O-ring seal (49) into cover (47).
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    Illustration 15	g00949400

16. Position cover (47) onto control valve (15) and install bolts (46).
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    Illustration 16	g00949399

17. Install check valve (45) into control valve (15). Repeat for the opposite side.
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    Illustration 17	g01120259

18. Install O-ring seal (42), backup ring (43), and O-ring seal (44) onto valve assembly (41). Lubricate O-ring seals (42) and (44) and backup ring (43) with the lubricant that is being sealed. Repeat the procedure for the second relief valve.
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    Illustration 18	g00949397

19. Install valve assembly (41) into control valve (15). Repeat for the opposite side.
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    Illustration 19	g00949396

20. Install spool (40) into control valve (15).
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    Illustration 20	g00949395

21. Install O-ring seal (39) (not shown) onto plug (38) and install the plug into control valve (15).
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    Illustration 21	g00949394

22. Install control valve (15) onto studs (14) and control valve (37).
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    Illustration 22	g01120248

23. Install O-ring seals (34), O-ring seal (35), and O-ring seal (36) into control valve (15).
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    Illustration 23	g01120241

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    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.

24. Install retainer (31), collars (32), and spring (33) onto valve spool (30).
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    Illustration 24	g00949212

25. Position control valve (13) in a suitable vise. Install valve spool (30) into control valve (13).
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    Illustration 25	g01120236

26. Install O-ring seal (26) and O-ring seal (27) into cover (25). Install screw (28) and sealing nut (29).
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    Illustration 26	g00949209

27. Position cover (25) onto control valve (13) and install bolts (24).
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    Illustration 27	g00949207

28. Install valve assembly (23) into control valve (13). Repeat for the opposite side.
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    Illustration 28	g00949203

29. Install O-ring seal (20), backup ring (21), and O-ring seal (22) onto plug (19). Lubricate the O-ring seals and the backup ring with the lubricant that is being sealed. Install plug (19) into control valve (13). Install the plug into the opposite side of the control valve.
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    Illustration 29	g00949200

30. Install spool (18) into control valve (13).
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    Illustration 30	g01120231

31. Install O-ring seal (17) (not shown) onto plug (16) and install the plug into control valve (13).
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    Illustration 31	g00949159

32. Install control valve (13) onto studs (14) and control valve (15).
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    Illustration 32	g01120230

33. Install O-ring seals (10), O-ring seal (11), and O-ring seal (12) into control valve (13).
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    Illustration 33	g01120229

34. Install O-ring seals (7), backup rings (8), and O-ring seal (9) onto valve assembly (6). Lubricate O-ring seals (7) and (9) and backup rings (8) with the lubricant that is being sealed.
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    Illustration 34	g00949065

35. Position manifold (5) in a suitable vise and install valve assembly (6). Tighten valve assembly (6) to a torque of 55 ± 5 N·m (40 ± 4 lb ft).
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    Illustration 35	g01120209

36. Install manifold (5) and locknuts (4). Tighten locknuts (4) to a torque of 35 N·m (26 lb ft).
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    Illustration 36	g01120201

37. Position electronic pilot valve (2) onto bank valve (3) and install bolts (1). Tighten bolts (1) to a torque of 3 ± 0.3 N·m (27 ± 3.0 lb in).

End By:

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