966K and 972K Wheel Loaders Power Train Caterpillar

Removal Procedure

Start By:

1. Connect the steering frame lock.
2. Remove the implement piston pump.
3. Remove the hydraulic tank.
4. Remove the power train cooler.
5. Remove the steering control valve.
6. Remove the center drive shaft.
7. Remove the rear drive shaft.

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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

1. Drain the engine cooling system. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the correct draining and filling procedures.

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Illustration 1	g02209193

2. Remove tube assembly (1) and hose assemblies (2) .

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Illustration 2	g02208997

3. Remove tube assembly (3) .

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Illustration 3	g02209275

4. Disconnect clips (4) .

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Illustration 4	g02209217

5. Disconnect harness assembly (5) .

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Illustration 5	g02209177

6. Disconnect all nine hose assemblies (6) .

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Illustration 6	g02209214

7. Disconnect clips (7) .

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Illustration 7	g02209159

8. Disconnect clip (8) and remove tube assemblies (9) .

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Illustration 8	g02209754

9. Remove yoke (10) .

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Illustration 9	g02209775

10. Attach Tooling (A) to transmission (11) .

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Illustration 10	g02209796

11. Attach Tooling (B) to tooling (A) and a suitable lifting device to transmission (11) . The weight of transmission (11) is approximately 1225 kg (2700 lb). Apply suitable tension to suitable lifting device in order to release pressure from the transmission mounting brackets.

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Illustration 11	g02209816

12. Remove bolts (12) , bolt (13) and use two people to remove mounting bracket (13) . The weight of mounting bracket (14) is approximately 32 kg (70 lb). Repeat step 12for opposite side.

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Illustration 12	g02209593

13. Raise transmission (11) approximately 6.4 mm (0.25 inch). Install suitable cribbing 152 mm (6 inch) long, 51 mm (2 inch) wide and 25 mm (1 inch) thick between the bell housing and axle (15) .

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Illustration 13	g02209874

14. Remove bolts (16) and transmission (11) .

Installation Procedure

1. Install transmission (11) in th reverse order of the removal.

   1. Tighten bolts (12) to a torque of 542 ± 68 N·m (399.75752 ± 50.15408 lb ft)

   2. Tighten bolts (13) to a torque of 895 ± 102 N·m (660 ± 75 lb ft)