IT38H Integrated Toolcarrier and 938H Wheel Loader Machine Systems Caterpillar

Connection Procedure

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Illustration 1	g01358827

1. Position lower cap (39) on the upper frame. Hold the lower cap in place with bolts (37). Make sure that the lower cap is seated firmly against the upper frame.

2. Lower the temperature of the lower bearing cup . Install the lower bearing cup so that the cup contacts lower cap (39).
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   Illustration 2	g01356191

3. Lubricate the lower bearing cone and upper bearing cone (44) with clean oil. Install the bearing cones in the correct bores in the frame.
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   Illustration 3	g01356181

4. Lower the temperature of upper bearing cup (43). Install upper bearing cup (43) so that the cup contacts upper bearing cone (44) that was installed in the previous step. Remove bolts (37) and lower cap (39).
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   Illustration 4	g01358909

5. Install Tooling (H) on the lower bearing cone and on upper bearing cone (44) that was previously installed.

6. Install lower cap (39), the shims, and upper cap (38) in the upper frame.

7. Install three of bolts (37) so that each bolt is separated by 120 degrees. Tighten the bolts.

8. Use a torque wrench and Tooling (H) to determine the amount of torque that is needed to turn upper bearing cone (44). As required, adjust the number of shims to achieve a rolling torque between 3 N·m (26 lb in) and 14 N·m (123 lb in).

9. Remove bearing caps (38) and (39). Remove Tooling (H).
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   Illustration 5	g01356176

10. Use Tooling (J) to install lip seal (41) in upper cap (38) so that the seal contacts the counterbore in the upper cap. Make sure that the sealing lip is facing inside the upper cap.

11. Use Tooling (J) to install lip seal (42) in lower cap (39) so that the seal contacts the counterbore in the lower cap. Make sure that the sealing lip is facing toward the outside of the lower cap.
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    Illustration 6	g01356171

12. Install spacer (40) in lower cap (39).
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    Illustration 7	g01356165

13. Install the proper number of shims. Install upper cap (38), lower cap (39), and bolts (37).
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    Illustration 8	g01358914

14. Install lower cap (31) and bolts (29). Make sure that the lower cap is seated firmly against the lower frame. Lower the temperature of lower bearing cup (36). Install lower bearing cup (36) so that the cup contacts lower cap (31).
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    Illustration 9	g01356112

15. Lubricate the lower bearing cone and upper bearing cone (35) with clean oil. Install the bearing cones in the correct bores in the frame. Lower the temperature of upper bearing cup (34). Install upper bearing cup (34) so that the cup contacts upper bearing cone (35).
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    Illustration 10	g01358922

16. Install Tooling (K) on upper bearing cone (35).

17. Install lower cap (31), the shims, and upper cap (30) in the lower frame.

18. Install three of bolts (29) so that each bolt is separated by 120 degrees. Tighten the bolts.

19. Use a torque wrench and Tooling (K) to determine the amount of torque that is needed to turn upper bearing cone (35). As required, adjust the number of shims to achieve a rolling torque between 0.5 N·m (4.4 lb in) and 2.5 N·m (22 lb in).

20. Remove upper caps (30) and (31). Remove Tooling (K).
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    Illustration 11	g01356103

21. Use Tooling (L) to install lip seal (32) in upper cap (30) so that the seal contacts the counterbore in the upper cap. Make sure that the sealing lip is facing toward the outside of the upper cap.

22. Use Tooling (L) to install lip seal (33) in lower cap (31) so that the seal contacts the counterbore in the lower cap. Make sure that the sealing lip is facing inside the lower cap.

23. Install the proper number of shims. Install upper cap (30), lower cap (31), and bolts (29).
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    Illustration 12	g00983917

24. Fasten a suitable lifting device onto the front frame. The weight of the front frame is approximately 2043 kg (4500 lb). Connect the loader frame to the non-engine end frame. Align the pin bores.
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    Illustration 13	g01358946

25. Install upper pin (26) and bolt (25).
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    Illustration 14	g01355923

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    Illustration 15	g01358952

26. Install plate (27) and bolts (28).

27. Use a thickness feeler gauge to measure the gap between pin (26) and the surface of the upper boss, as shown. Record the measurement. Remove bolts (28) and plate (27).
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    Illustration 16	g00283521

28. Tap pin (26) upward. Install shims under the plate of pin (26). Refer to the measurement that was obtained in the previous step.
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    Illustration 17	g01355912

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    Illustration 18	g01355923

29. Push pin (26) downward and install bolts (24). Bolt (25) was previously installed.

30. Install plate (27) and bolts (28). Tighten bolts (24) and (28).
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    Illustration 19	g01355876

31. Install pin (22) in the aligned bores of the lower hitch. Install bolt (23).
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    Illustration 20	g00983936
    For Tooling (A)

32. Remove Tooling (A) from the rear frame.
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    Illustration 21	g06377847
    For Tooling (A1)

33. Remove Tooling (A1) from the rear frame. Refer to Tool Operating Manual, NEHS1303, "Lift Group (Stand - 25 Ton)" for more information on Tooling (A1).
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    Illustration 22	g00983915

34. Remove Tooling (B).
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    Illustration 23	g01355853

35. Install pin assembly (21) and bolt (20) to the rod end of both steering cylinders.
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    Illustration 24	g01355813

36. Connect hose assemblies (18) and (19).
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    Illustration 25	g01355771

37. Connect hose assemblies (14), (15), (16), and (17).
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    Illustration 26	g01355770

38. Connect hose assembly (13).
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    Illustration 27	g01355768

39. Connect hose assemblies (9) and (10). Connect hose assemblies (11) and install clamp (12).
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    Illustration 28	g01355767

40. Install clamps (7) and (8).
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    Illustration 29	g01355796

41. Install clamp (5) and bolts (6).
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    Illustration 30	g01355763

42. Move harness assembly (2) into position. Install clip (3) and clamps (1) and (4).

End By:

1. Install the center drive shaft.

2. Install the cab.