CYLINDER GP-BACKHOE BUCKET 2107087 - Caterpillar

Personal injury or death can result if two persons are not used in the following procedure.
Personal injury or death can result from a parking brake malfunction. Do not operate the machine if the parking brake does not function correctly.Be sure the parking brake components are adjusted correctly before attempting to return the machine to service.
Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.
Machine Preparation
Note: Refer to Service Manual module Testing and Adjusting, "Machine Preparation for Troubleshooting" for the machine that is being serviced.
Park the machine on a smooth level surface.
Place the transmission control in the Neutral position.
Lower the grapple to the ground.
Engage the parking brake
Place blocks in front and behind the wheels in order to prevent movement of the machine when the parking brake is released.
Illustration 1 g03015337
Steering Frame Lock
Install the steering frame lock.
Allow only authorized personnel on the machine. Keep Unauthorized personnel off the machine and in clear sight of the operator.
Push the parking brake knob inward in order to disengage the parking brake.Adjusting Procedure
Illustration 2 g02258494
Parking Brake Actuator AssemblyThe parking brake is located in the drive line on the front frame of the machine.
Illustration 3 g03015458
Front view and Side view of the Parking Brake Assembly (1) Parking brake actuator. (2) Actuator shaft. (3) Locknut. (4) Cotter pin. (5) Clevis pin. (6) Brake shoe lining. (7) Starwheel. (8) Brake drum. (9) Lever screw. (10) Camshaft. (11) Rod end. (12) Lever (A) 145 mm (5.7 inch) (B) 35 to 50 mm (1.38 to 2.0 inch)
Remove cotter pin (4) and clevis pin (5) from rod end (11) .
Use the access hole on the frame plate in order to insert a 0.5 mm (.02 inch) feeler gauge between parking brake shoe lining (6) and brake drum (8). Rotate starwheel (7) until there is a snug fit between the brake shoe lining, the feeler gauge, and the brake drum.
The parking brake control knob should be in the disengaged position. Actuator shaft (2) should be extended. Loosen locknut (3). Turn rod end (11) in order to obtain dimension (A). Dimension (A) equals 145 mm (5.7 inch)
Manually rotate and hold lever (12) toward parking brake actuator (1) in order to take up slack between camshaft (10) and brake shoe lining (6). Rotate actuator shaft (2) relative to rod end (11) in order to install clevis pin (5). Tighten locknut (3) against actuator shaft (2) .
Install cotter pin (4) into clevis pin (5) .
Pull the parking brake knob outward. The movement of the knob will engage the parking brake by releasing the hydraulic oil pressure in parking brake actuator (1). The stroke of actuator shaft (2) should not exceed dimension (B). Dimension (B) equals 35 to 50 mm (1.38 to 2.0 inch) past Dimension (A). If the stroke exceeds dimension (B), repeat Steps 1 to 5 in order to