793C Off-Highway Truck Machine Systems Caterpillar


Hydraulic Tank - Assemble

Usage:

793C 4AR

Assembly Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
1P-1861  Retaining Ring Pliers 

Note: Inspect the O-ring seals. Replace any O-ring seals that are worn or damaged.

Note: Before installation, apply 1U-6396 O-Ring Assembly Compound to the O-ring seals.



    Illustration 1g00493204


    Illustration 2g00493205


    Illustration 3g00493209

  1. Install baffle assembly (63).

  2. Install washer (60) and nut (59).

    Note: Tighten nuts (59) to a torque of 55 ± 10 N·m (40.6 ± 7.4 lb ft).

  3. Install gasket (62).

  4. Install two bolts (61).

    Note: Tighten bolts (61) to a torque of 100 ± 20 N·m (73.8 ± 14.8 lb ft).

  5. Repeat Steps 1 through 4 for baffle assembly (64).


    Illustration 4g00493202


    Illustration 5g00493203

  6. Install baffle assembly (58).

  7. Install two nuts (57), four washers (56), and two bolts (55).

    Note: Tighten nuts (57) to a torque of 55 ± 10 N·m (40.6 ± 7.4 lb ft).

  8. Tighten four hose clamps (54). Slide hose (53) into position for assembly.

    Note: Tighten clamps (54) to a torque of 7.5 ± .5 N·m (66.4 ± 4.4 lb in).



    Illustration 6g00493200

  9. Install strainer (52).


    Illustration 7g00493142

  10. The photo above shows cap assembly (45), link (44), and lock (46).


    Illustration 8g00493146


    Illustration 9g00493147


    Illustration 10g00493148

  11. Install ball (51).

  12. Install cap (48) on cap assembly (47).

  13. Install gasket (49).

  14. Install ring (50).

  15. Turn over cap assembly (45).


    Illustration 11g00493071

  16. Install baffle (43).

    Note: The baffle is located in the upper right side of the hydraulic tank.

  17. Install four washers (42) and four nuts (41).

    Note: Tighten nuts (41) to a torque of 55 ± 10 N·m (40.6 ± 7.4 lb ft).



    Illustration 12g00493069

  18. Install seal (35).

    Note: Before the installation of the seals, lubricate the seals with 1U-6396 O-Ring Assembly Compound.

  19. Install valve (36) on relief valve body (34).

  20. Install shim (39).

  21. Install spring (37).

  22. Install shim (40).

  23. Install plug (38).

    Note: Tighten plug (38) to a torque of 105 ± 20 N·m (77.4 ± 14.8 lb ft).



    Illustration 13g00493066


    Illustration 14g00493068

  24. Install two brake cooler relief valves (34).

    Note: Tighten valves (34) to a torque of 165 ± 15 N·m (121.7 ± 11.1 lb ft).



    Illustration 15g00493062

  25. Install seal (30), plug (31), cover (33), screen (32), two washers (29), two spacers (27), and two bolts (28) on block (26).

    Note: Tighten bolts (28) to a torque of 28 ± 7 N·m (20.7 ± 5.2 lb ft).

  26. Repeat Step 25 for the other screen assembly.


    Illustration 16g00493060

  27. Install the screen assembly of the hoist valve return.

  28. Install two bolts (25).

    Note: Tighten bolts (25) to a torque of 100 ± 20 N·m (73.8 ± 14.8 lb ft).



    Illustration 17g00493056


    Illustration 18g00493058

  29. Install drain plug (24), O-ring seal (23), drain valve body (22), O-ring seal (21), spring (20), valve (19), and spring (18).

    Note: Tighten plug (24) to a torque of 68 ± 7 N·m (50.2 ± 5.2 lb ft).



    Illustration 19g00493048


    Illustration 20g00493052

  30. Install the drain valve on the bottom of the tank.

  31. Install two washers (17) and two locknuts (16) in order to install the drain valve.

    Note: Tighten locknuts (16) to a torque of 55 ± 10 N·m (40.6 ± 7.4 lb ft).



    Illustration 21g00493047

  32. Install grommet (15), sight gauge (12), four seals (14), plate (13), and retainer (11). Install four bolts (4).


    Illustration 22g00492971


    Illustration 23g00492974

  33. Install grommet (10), two seals (9), plate (8), glass (7), and retainer (6).

    Note: Install the plate so the markings face the outside of the tank.



    Illustration 24g00492964

  34. Install two bolts (5).

    Note: Tighten bolts (5) to a torque of 30 ± 7 N·m (22.1 ± 5.2 lb ft).

  35. Install gasket (3).

    Note: When cover (1) is installed, replace gasket (3).

  36. Use a suitable hoist to support the weight of cover (1). Install cover (1). The cover weighs approximately 29 kg (63.9 lb).

  37. Install 62 bolts (2).

  38. Fill the hydraulic tank. The capacity of the hydraulic tank is 580 L (153.2 US gal).

End By:

  1. Install the hydraulic tank. Refer to Disassembly and Assembly, "Hydraulic Tank - Install" for the correct procedure.

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