336E Excavator and 336E MHPU Mobile Hydraulic Power Unit Machine Systems Caterpillar

Removal Procedure

Start By:

1. Release the hydraulic system pressure.

1. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change" for the correct draining and filling procedures.

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Illustration 1	g02211633

2. Remove cover assembly (2) .

3. Use two people in order to remove cover assembly (3) . The weight of cover assembly (3) is approximately 28 kg (62 lb). Remove bolts (1) and cover assembly (3) .

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Illustration 2	g02211634

4. Remove bolts (4) and gauge assembly (6) .

5. Disconnect harness assemblies (5) and (11) . Disconnect harness assemblies (5) and (11) from the hydraulic tank. Remove temperature sensor (10) .

6. Disconnect hose assemblies (7) and pipe assembly (9) from the hydraulic tank. Remove fittings (8) from the hydraulic tank.

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Illustration 3	g02211635

7. Remove bolts (12) and reposition filter assembly (13) .

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Illustration 4	g02211636

8. Remove cover assembly (14) and (15) .

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Illustration 5	g02211637

9. Remove bolts (16) and reposition exhaust monitor assembly (17) .

10. Disconnect brackets (18) from the hydraulic tank.

11. Disconnect harness assembly (19) . Cut cable straps (20) and reposition harness assembly (19) .

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Illustration 6	g02211638

12. Remove bolts (21) and plate assembly (22) .

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Illustration 7	g02211639

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Illustration 8	g02211640

13. Attach Tooling (A) and a suitable lifting device to hydraulic tank (23) . The weight of hydraulic tank (23) is approximately 250 kg (550 lb).

14. Disconnect hose assembly (25) and tube assembly (26) .

15. Remove bolts (24) and hydraulic tank (23) .

Installation Procedure

1. Install hydraulic tank (23) in the reverse order of removal.

   1. Apply Tooling (B) to the threads of bolts (24) . Tighten bolts (24) to a torque of 270 ± 40 N·m (200 ± 30 lb ft).

   2. Apply Tooling (C) to the threads of bolts (21) .

   3. Tighten temperature sensor (10) to a torque of 34 ± 5 N·m (25 ± 4 lb ft).

   4. Tighten bolts for pipe assembly (9) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).

   5. Tighten bolts (6) to a torque of 6 ± 1 N·m (53 ± 9 lb in).