ACTUATOR-ROCKER 3E8784 - Caterpillar

Personal injury can result if the machine moves while testing the parking brake.If the machine begins to move during the test, reduce the engine speed immediately and apply the service brakes.
If the machine moved while testing the parking brake, contact your Caterpillar dealer.Have the dealer inspect and repair the parking brake components as required before returning the machine to operation.
Specifications
Table 1
Specifications
Date Product or Component SN
Brake Status Engine Status Transmission Status Desired Test Result Actual Test Result
Parking Brake Applied Slowly Raised to High Idle Third Speed Forward(1) Machine Must Not Move
(1) With the parking brake engaged and the transmission in any gear except neutral, the warning buzzer will sound intermittently.Introduction
This procedure describes the test to verify the Parking Brake functionality.Test Preparation
Position the machine on a dry, hard, level surface.
Be sure that the machine is in an open area and that the area is clear of personnel.
Place the steering frame lock in the STORED position.Test Procedure
Fasten the seat belt before testing the parking brake
Start the engine and raise the bucket slightly.
Engage the parking brake switch to engage the parking brake.
Apply the service brakes.
Move the STIC control lock to the UNLOCKED position.
Move the STIC upshift switch to place the transmission in third speed FORWARD. Move the STIC transmission direction control switch to the FORWARD (F) position.Note: With the parking brake engaged and the transmission in any gear except neutral, the warning buzzer will sound intermittently.
Release the Service brakes.Note: The parking brake will remain engaged.
Gradually increase the engine speed to high idle. The machine must not move. If the machine moves, check for wear on the plates for the parking brake and on the discs for the parking brake.
Reduce the engine speed to low idle. Move the STIC transmission direction control switch to NEUTRAL (N) position.
Lower the bucket to the ground. Stop the engine.