826G Landfill Compactor, 825G Soil Compactor and 824G Wheel Dozer Power Train Caterpillar

Oscillating Axle (Rear) - Remove and Install

Usage:

824G 4SN

Removal Procedure

Start By:

Remove the rear tires and rims or remove the compactor wheels. Refer to Disassembly and Assembly, "Tire and Rim (Rear) - Remove and Install" or Disassembly and Assembly, "Compactor Wheel - Remove" for the machine that is being serviced.
Remove the rear drive shaft. Refer to Disassembly and Assembly, "Drive Shaft (Rear) - Remove and Install" for the machine that is being serviced.
Remove the crankcase guard. Refer to Disassembly and Assembly, "Crankcase Guard - Remove and Install" for the machine that is being serviced.
Remove the side panels. Refer to Disassembly and Assembly, "Side Panels - Remove and Install" for the machine that is being serviced.

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NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide", for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose of all fluids according to local regulations and mandates.

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At operating temperature, the steering and brake hydraulic oil tank is hot and under pressure. Hot oil can cause burns.

To prevent possible personal injury, release the pressure in the steering and brake hydraulic system before hydraulic lines or components are disconnected or removed.

Note: Put identification marks on all lines, on all hoses, on all wires and on all tubes for installation purposes. Plug all lines, all hoses and all tubes. This will help to prevent fluid loss and this will help to keep contaminants from entering the system.

Note: The wood blocks that were placed between the rear axle housing and the rear main frame must remain in place. This will prevent the axle housing from oscillating during the removal procedure.

Note: If equipped, follow Steps 1 through 12 for the removal of the rear guards from the 826G Landfill Compactor.

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Illustration 1	g00546020

Place a suitable floor jack under the rear guard.

Remove eight bolts (1), the washers and eight nuts (7) .

Remove two plates (2) .

Remove four bolts (4) and the washers from each side of the rear guard.

Remove six bolts (5) and the washers.

Remove two bolts (6) and the washers.

Use two people to carefully remove upper rear guard (3). The weight of the upper rear guard is 45 kg (99 lb).

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Illustration 2	g00546039

Use the floor jack to carefully remove lower rear guard (8). The weight of the lower rear guard is 45 kg (99 lb).

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Illustration 3	g00546120

Place a suitable floor jack under support (10) .

Remove eight bolts (11) and the washers.

Use the floor jack to carefully remove plate (9) and support (10). The combined weight of the plate and the support is 43 kg (95 lb).

Repeat Steps 1 through 11 for the removal of the other rear guards.

Drain the oil from the oscillating axle. The capacity of the oscillating axle is 87 L (23 US gal).

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Illustration 4	g00545997

Disconnect grease tube (12) from the top of rear trunnion support (13) .

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Illustration 5	g00545998

Disconnect grease tube (14) from the top of front trunnion support (15) .

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Illustration 6	g00545999

Disconnect fitting (16) from the front, left side of the oscillating axle.

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Illustration 7	g00546000

Disconnect fitting (17) from the front, right side of the oscillating axle.

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Illustration 8	g00517372

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Illustration 9	g00517373

Attach a hoist and a suitable lifting sling on both ends of the oscillating axle.

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Illustration 10	g00546001

Remove four nuts (18) and the washers from front trunnion support (15) .

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Illustration 11	g00546002

Remove four nuts (19) and the washers from rear trunnion support (13) .

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Illustration 12	g00546003

Use the hoist to carefully remove oscillating axle (20) from the machine. The weight of the oscillating axle is 2220 kg (4900 lb).

Installation Procedure

Note: Make sure that all mounting surfaces are clean prior to installation.

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Illustration 13	g00546003

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Illustration 14	g00517373

Attach a hoist and a suitable lifting sling on both ends of oscillating axle (20) .

Apply 5P-3931 Anti-Seize Compound to the mounting surfaces of the front trunnion support and the rear trunnion support. Apply 5P-3931 Anti-Seize Compound to the eight support bolts.

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Illustration 15	g00546002

Raise the oscillating axle into position. The weight of the oscillating axle is 2220 kg (4900 lb).

Install four nuts (19) and the washers that hold rear trunnion support (13) to the rear loader frame. Tighten the nuts to a torque of 1000 ± 125 N·m (740 ± 90 lb ft).

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Illustration 16	g00546001

Install four nuts (18) and the washers that hold front trunnion support (15) to the rear loader frame. Tighten the nuts to a torque of 1000 ± 125 N·m (740 ± 90 lb ft).

Note: Install wood blocks between the rear axle housing and the rear main frame on both sides of the machine. This will prevent the axle housing from oscillating during the installation procedure.

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Illustration 17	g00546000

Connect fitting (17) to the front, right side of the oscillating axle.

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Illustration 18	g00545999

Connect fitting (16) to the front, left side of the oscillating axle.

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Illustration 19	g00545998

Connect grease tube (14) to the top of front trunnion support (15) .

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Illustration 20	g00545997

Connect grease tube (12) to the top of rear trunnion support (13) .

Fill the oscillating axle. The capacity of the oscillating axle is 87 L (23 US gal). For the correct procedure, refer to Operation and Maintenance Manual for the machine that is being serviced.

Note: If equipped, follow Steps 11 through 22 for the installation of the rear guards to the 826G Landfill Compactor.

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Illustration 21	g00546120

Secure support (10) to a suitable floor jack.

Use the floor jack to carefully install plate (9) and support (10). The combined weight of the plate and support is 43 kg (95 lb).

Install eight bolts (11) and the washers.

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Illustration 22	g00546039

Secure lower rear guard (8) to a suitable floor jack.

Use the floor jack to carefully install lower rear guard (8). The weight of the lower rear guard is 45 kg (99 lb).

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Illustration 23	g00546020

Use two people to carefully install upper rear guard (3). The weight of the upper rear guard is 45 kg (99 lb).

Install two bolts (6) and the washers.

Install six bolts (5) and the washers.

Install four bolts (4) and the washers on each side of the rear guard.

Install two plates (2) .

Install eight bolts (1), the washers and eight nuts (7) .

Repeat Steps 11 through 21 for the installation of the other rear guards.

End By:

Install the side panels. Refer to Disassembly and Assembly, "Side Panels - Remove and Install" for the machine that is being serviced.
Install the crankcase guard. Refer to Disassembly and Assembly, "Crankcase Guard - Remove and Install" for the machine that is being serviced.
Install the rear drive shaft. Refer to Disassembly and Assembly, "Drive Shaft (Rear) - Remove and Install" for the machine that is being serviced.
Install the rear tires and rims or install the compactor wheels. Refer to Disassembly and Assembly, "Tire and Rim (Rear) - Remove and Install" or Disassembly and Assembly, "Compactor Wheels - Install" for the machine that is being serviced.
Purge the air from the braking system. For the correct procedure, refer to Testing and Adjusting for the machine that is being serviced.