HUB 2F8087 - Caterpillar

Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
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Position spacers (9) and spring washers (10) to piston (7).
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Install cover (4) to piston (7).
Spring force is created when releasing the brakes. Failure to follow the recommended procedure could cause the threads inside the brake piston to fail and forcefully propel the tooling. Personal injury or death could result from being struck by tooling propelled by the released spring force. Follow the recommended procedure when releasing the brakes.
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Install Tooling (B) to put the brake in the released position. Follow the following procedure to put the brake in the released position.
Modify the forcing bolt for Tooling (B) to make the threads 90.00 mm (3.543 inch) in length.
Install Tooling (B) to the brake.
Make sure that the forcing bolt that is used in Tooling (B) has full thread engagement into the brake.Note: Do not overtighten the threads.
To release the brake, hold the forcing bolt stationary and turn the nut in the clockwise direction. The nut will be tightened to a torque of approximately 340 N m (250 lb ft) to release the brake.
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Install O-ring seal (8) to cover (4).
Install O-ring seal (6) to piston (7).
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Install brake disc kit (5).
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Install Tooling (C).
Use two people to position cover (4) to the machine. The weight of cover (4) is approximately 36 kg (80 lb).
Install bolts (3) to cover (4).
Remove Tooling (C).
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Install remaining bolts (3) to cover (4).
Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
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Use Tooling (B) to relieve the spring force. Hold the forcing bolt stationary and turn the nut in the counterclockwise direction. Remove Tooling (B).
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Install plug (2).
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Install cover (1).
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Typical Example
The wheels have been removed for photographic clarity.
Remove Tooling (A).
Remove Tooling (D). Refer to Tool Operating Manual, NEHS1303 , "Lift Group (Stand - 25 Ton)" for more information on Tooling (D).