950G and 962G Wheel Loaders and IT62G Integrated Toolcarrier Machine Systems 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.

1. Check the condition of all O-ring seals. If any O-ring seals are worn or damaged, use new parts for replacement.

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Illustration 1	g00340817

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Illustration 2	g00484855

2. Assemble valve spool assemblies (36) and (37). Install shim (39), retainer (40), spring (41), spring (42), shim (43), retainer (44), shim (45) and bolt (46) on spool (38) .

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Illustration 3	g00484854

3. Install tilt valve spool assembly (36) and lift valve spool assembly (37) .

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Illustration 4	g00484853

4. Install the O-ring seals on housings (35). Install two housings (35) and four bolts (34). The torque for bolts (34) is 35 ± 3 N·m (26 ± 2 lb ft).

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Illustration 5	g00484850

5. Install the O-ring seals on housings (32). Install two housings (32) and four bolts (33). The torque for bolts (33) is 35 ± 3 N·m (26 ± 2 lb ft).

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Illustration 6	g00340775

6. Install three plugs (30) in the main control valve. The torque for plugs (30) is 350 ± 30 N·m (260 ± 22 lb ft).

7. Install makeup valve (31) in the main control valve. The torque for plugs (30) is 430 ± 30 N·m (320 ± 22 lb ft).

Note: IT62G refer to Step 10. 950G and 962G refer to Step 8.

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Illustration 7	g00340300

8. Assemble main relief valve (21) :

   1. Install valve (26), spring (24) and shim (28) in the valve body.

   2. If retainer assembly (29) was removed from cap (27), install the retainer assembly and tighten locknut (25) to a torque of 50 ± 7 N·m (37 ± 5 lb ft). Install O-ring seal (23) on the cap. Install cap (27) on the valve body.

   3. Install O-ring seals (22) on the valve body.

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Illustration 8	g00340298

9. Install main relief valve (21) in the main control valve. The torque for main relief valve (21) is 110 ± 10 N·m (80 ± 7 lb ft).

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Illustration 9	g00484883

10. Install plug (21). The torque for plug (21) is 300 ± 30 N·m (220 ± 22 lb ft).

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Illustration 10	g00340189

11. Assemble relief valves (11) and (12) :

    1. Install valve (20), plate (19), spring (15) and shim (14) in the valve body.

    2. Install O-ring seal (18) on retainer assembly (17). Install retainer assembly (17) and tighten locknut (13) to a torque of 50 ± 7 N·m (37 ± 5 lb ft).

    3. Install O-ring seals (16) on the valve body.

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Illustration 11	g00340188

12. Install relief valve (11) and relief valve (12) in the main control valve. The torque for the relief valves is 65 ± 5 N·m (48 ± 4 lb ft).

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Illustration 12	g00340182

13. Attach a hoist and a suitable lifting sling to main control valve (10). The weight of the main control valve is 68 kg (150 lb).

14. Install main control valve (10) on the plate. Install three bolts (9) .

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Illustration 13	g00340181

15. Install pipe (8) and two tubes (7) .

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Illustration 14	g00339558

16. Attach a hoist and a suitable lifting sling to diverter valve (5). The weight of the diverter valve is 52 kg (115 lb).

17. Install diverter valve (5) on the main control valve. Install eight bolts (6) .

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Illustration 15	g00339557

18. Connect electrical connector (1) .

19. Install hose (2) on the pressure sensor.

20. Install two tubes (3) and two tubes (4) on diverter valve (5) .

End By: Install the main control valve and the mounting. Refer to Disassembly and Assembly, "Main Control Valve and Mounting (Including Mounting Plate) - Install".