IT38G Integrated Toolcarrier and 938G Wheel Loader Power Train Caterpillar

Assembly Procedure

Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.

Show/hide table



Illustration 1	g00686083

1. Install slug (51) and slug (52) into spool (42). Install screen plug (50) into spool (55). Install spool (55), spacer (54), and retainer ring (49) into spool (42) .

Show/hide table



Illustration 2	g00686067

2. Install solenoid valve assemblies (37) and (48) into valve body (26). Tighten the solenoid valve assemblies to a torque of 50 ± 5 N·m (37 ± 4 lb ft).

3. Install valve spools (40) and selector valve spool (42) into the valve body.

4. Install slugs (41), springs (43), and plugs (44) into the valve body.

5. Install valve spools (46), slugs (47), slug (39), springs (38), and plugs (45) into the valve body. Tighten the smaller plugs in plugs (44) and (45) to a torque of 37 ± 3 N·m (27 ± 2 lb ft). Tighten the larger plugs in plugs (44) and (45) to a torque of 75 ± 10 N·m (55 ± 7 lb ft).

Show/hide table



Illustration 3	g00686054

6. Turn over valve body (26) and install spring (36), retainer (35), and seal (34) .

Show/hide table



Illustration 4	g00685978

7. Install flow valve (33) and retainer ring (32) in manifold (27) .

8. Install seal (31) .

Show/hide table



Illustration 5	g00685976

9. Install dowels (30) and seal (29) in manifold (27) .

Show/hide table



Illustration 6	g00685974

10. Install spacer plate (28) onto manifold (27) .

Show/hide table



Illustration 7	g00685969

11. Install valve body (26) onto manifold (27) with socket head bolts (24) and (25). The torque for the socket head bolts is 30 ± 4 N·m (22 ± 3 lb ft).

Show/hide table



Illustration 8	g00685966

12. Install the O-ring seal on plug (17). Install plug (17) in the dump valve. Tighten plug (17) to a torque of 14 ± 2 N·m (10 ± 1 lb ft).

13. Install plugs (12) and (16) in the dump valve. Install plug (18) in the valve body. Install screen plug (20) into valve spool (19). Install valve spool (19), piston (21), and spring (22) in the valve body. Install plug (23) .

14. Install valve spool (13) and spring (14) in the valve body. Install plug (15). Tighten plugs (16) and (23) to a torque of 37 ± 5 N·m (27 ± 4 lb ft). Tighten plugs (12) and (15) to a torque of 25 ± 4 N·m (18 ± 3 lb ft).

Show/hide table



Illustration 9	g00685955

15. Install rubber seal (11) on the bottom of the dump valve.

Show/hide table



Illustration 10	g00685947

16. Install two dowels (8), seal (9), and O-ring seal (10) onto the dump valve.

Show/hide table



Illustration 11	g00826609

Show/hide table



Illustration 12	g00685935

17. Install spool (5b), spring (5a), and plug (7) into differential valve (5) .

Note: Inspect the O-ring seal on plug (7). If the O-ring seal is worn or damaged, replace the O-ring seal.

Show/hide table



Illustration 13	g00685942

18. Install differential valve (5) and dump valve (6). Install bolts (4) to a torque of 30 ± 4 N·m (22 ± 3 lb ft).

Show/hide table



Illustration 14	g00686404

19. Install transmission control valve body (1) onto the transmission. Install hex head bolts (3) that hold the transmission control valve onto the transmission. Tighten hex head bolts (3) to a torque of 30 ± 4 N·m (22 ± 3 lb ft).

20. Connect wire connectors (2) to the transmission control valve body.

End By: Install the cab. Refer to Disassembly and AssemblySENR6798, "Cab - Install".