CARTRIDGE-VALVE 4549805 - Caterpillar

If the machine moves during the test, reduce the engine speed immediately, and engage the parking brake.If the machine moved while testing the brakes, consult your Caterpillar dealer for brake inspection and repair. Damaged brakes must be repaired before returning the machine to operation.
Note: The machine can be driven through the brakes in first gear.Make sure that the area around the machine is clear of personnel and clear of obstacles.Test the brakes on a dry, level surface.Fasten the seat belt before you test the brakes.The following test is used to determine whether the service brake is functional. This test is not intended to determine the maximum brake holding effort. This machine's brake holding effort will be different from other machines because of variations in the engine setting, in the power train efficiency, and in the brake holding ability.
Illustration 1 g00730179
Start the engine.
Raise all attachments.
Apply the service brakes.
Release the parking brake.
Illustration 2 g00730197
While the brake pedal is depressed, move the directional control to the SECOND SPEED FORWARD position.
Illustration 3 g00615774
Gradually increase the engine speed to HIGH IDLE. The machine should not move.
Move the directional control to the NEUTRAL position.
Illustration 4 g00615774
Reduce the engine speed to LOW IDLE. Engage the parking brake. Lower all attachments to the ground. Apply a slight down pressure. Stop the engine.
If the machine moved while testing the brakes, contact your Caterpillar dealer. Have the dealer inspect and, if necessary, repair the service brake before returning the machine to operation.