D8R Series II Track-Type Tractor Power Train Caterpillar

Final Drive, Steering Differential, and Brake (Left Side) - Install

Usage:

Installation Procedure

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Table 1
Required Tools
Tool	Part Number	Description	Qty
A	FT-1952	Axle Removal Tool	1
A	1U-7432	Adapter Assembly	1
B	8T-3207	Lifting Bracket	1
	5P-8622	Shackle	1
	1D-4615	Bolt (3/4 inch by 10 by 5 1/2 inch)	2
	1B-4331	Nut (3/4 inch by 10)	2
	5P-8248	Washer (3.5 mm by 36.5 mm)	4
C	1B-4331	Nut (3/4 inch by 10)	1
	5P-8248	Washer (3.5 mm by 36.5 mm)	2
	138-7574	Link Bracket	1
	138-7575	Link Bracket	1
	8S-9906	Ratchet Puller	1
	1A-1460	Bolt (1/2 inch by 13 by 2 inch)	1
	5P-8245	Washer (3 mm by 25.5 mm)	1
	1A-8063	Bolt (3/4 inch by 10 by 2 1/2 inch)	1

Note: O-ring seals, gaskets, and seals should always be replaced. A used O-ring may not have the same sealing properties as a new O-ring seal. A reconditioning procedure should not be degraded because of a low cost component such as an O-ring seal or a gasket. Use 1U-6396 O-Ring Assembly Compound during the assembly procedure.

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Illustration 1	g00619177

Install three O-ring seals (8).

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Personal injury or death can result from lifting a heavy assembly.
The heavy assembly can fall if using an incorrect hoist to lift the load.

Be sure the hoist has the correct capacity to lift a heavy assembly. Approximate weight of the assembly is given below.

Note: The weight of the final drive, differential, and brake assembly is 850 kg (1875 lb).

Use tool (B), a hoist, and tool (C) to position the steering differential. See Illustration 1 for the correct orientation.
Install the following items as an assembly: final drive, steering differential and brake.
Position the assembly 25 mm (1 inch) from the case.
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Illustration 2 g00619173
Use tool (C) to rotate the final drive flange clockwise to the correct orientation.
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Illustration 3 g00619176
Install nineteen bolts and washers (5) and install two bolts and washers (7).
Use bolts (5) and (7) to pull the assembly to the case.
Remove tool (C).
Install seven bolts and washers (10) in the final drive flange.
Remove tool (B).
Apply SAE 30W oil to the threads of the sprocket segment bolts.
Install the bolts, the nuts, and the washers in the segment.
Tighten the nuts to a torque of 300 ± 50 N·m (221 ± 37 lb ft). Tighten the nuts by another 1/3 turn. The final torque must be a minimum of 570 N·m (420 lb ft).
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Illustration 4 g00619136
Install O-ring seal (3) on adapter (2) for the steering motor.
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Illustration 5 g00619134
Install the adapter in the main case.
Install six bolts (1) in adapter (2).
Tighten six bolts (1) to a torque of 47 ± 9 N·m (35 ± 7 lb ft).

End By:

Install the drive axles. Refer to Disassembly and Assembly, "Axle - Remove and Install" in this module.
Install the steering motor. Refer to Disassembly and Assembly, SENR3689, "Steering Motor - Install" for the correct procedure.
Fill the final drive with oil. Refer to Operation and Maintenance Manual, SEBU7247, "Final Drive Oil Level - Check" for the correct procedure.
Fill the transmission system with oil. Refer to Operation and Maintenance Manual, SEBU7247, "Transmission System Oil Level - Check" for the correct procedure.
Connect the track. Refer to Disassembly and Assembly, "Track - Connect" in this module.