PLATE AS 4224051 - Caterpillar

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.Prevent possible injury by performing the procedure that follows before working on the machine.
Introduction
This information includes the following adjustment procedure:
Parking Brake Actuator - AdjustAdjustment Preparation
Park the machine on a smooth level surface.
Place the transmission in the NEUTRAL position.
Lower the bucket and/or any work tools to the ground.
Engage the parking brake.
Shut off the engine.
Place blocks in front of the wheels and behind the wheels.
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.
Disengage the parking brake.Prepare the machine for testing by completing the procedure that is specified in the Service Manual module Testing and Adjusting, "Machine Preparation for Troubleshooting" for the machine that is being serviced.Adjustment Procedure
Illustration 1 g06101065
Orientation view of the parking brake group
Illustration 2 g06100983
Rear view of the parking brake assembly
(A) 140 mm (5.5 inch)
(B) 18 mm (0.71 inch) to 27 mm (1.1 inch)
(1) Actuator Assembly
(2) Actuator Shaft
(3) Locknut
(4) Cotter Pin
(5) Pin
(6) Brake Shoe Lining
(7) Star Wheel
(8) Brake Drum
Illustration 3 g06101080
Side view of the parking brake assembly
(9) Lever Screw
(10) Camshaft
(11) Rod End
(12) LeverThe parking brake is located in the driveline on the front frame of the machine.
Park the machine on a dry, level surface. Block the tires securely to prevent movement of the machine when the parking brake is released.
Start the engine. Allow the hydraulic oil to reach normal operating pressure.
Push the parking brake control knob inward to release the parking brake.
Remove cotter pin (4) and pin (5) from actuator shaft (2).
Use the access hole on the frame plate to insert a 0.5 mm (.02 inch) feeler gauge between parking brake shoe lining (6) and brake drum (8). Rotate star wheel (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. The actuator shaft should be extended. Loosen locknut (3). Turn rod end assembly (2) until the length is equal to measurement (A).
Manually rotate and hold lever (12) toward parking brake actuator assembly (1) to take up slack between camshaft (10) and brake shoe lining (6). Rotate actuator shaft (2) relative to rod end (11) to install pin (5). Tighten locknut (3) against actuator shaft (2).
Install cotter pin (4) into pin (5).
Pull the parking brake knob outward, engaging the parking brake by releasing the hydraulic oil pressure in parking brake actuator (1). The stroke of actuator shaft (2) should be between 18 mm (0.71 inch) and 27 mm (1.1 inch). If the stroke exceeds dimension (B), repeat Step 2 through Step 8 to obtain the correct stroke.
After the parking brake has been adjusted, test the