854G Wheel Dozer Braking System - Test Caterpillar

1. Fasten the seat belt.

2. Make sure that the steering frame lock is in the unlocked position.

3. Park the machine on a hard, dry, level surface.

4. Check the area around the machine. Make sure that the machine is clear of personnel and clear of obstacles.

The following tests are used to determine whether the braking system is functional. These tests are not intended to measure the maximum brake holding effort. The required brake holding effort for sustaining a machine at a specific engine rpm varies from one machine to another machine. The variations include differences in the engine setting, the power train efficiency, the brake holding ability, etc.

Service Brake Holding Ability Test

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Personal injury can result if the machine moves while testing. If the machine begins to move during test, reduce the engine speed immediately and engage the parking brake.

This test is performed when the service brakes are engaged. If the machine begins to move, compare the engine rpm to the engine rpm of a prior test. This will indicate the amount of system deterioration.

1. Start the engine. Raise the work tool slightly. Apply the service brake. Release the parking brake.

2. Move the hydraulic lockout control to the UNLOCKED position.

3. Place the transmission in THIRD SPEED FORWARD while the service brakes are applied.

4. Gradually increase the engine speed to high idle. The machine should not move.

5. Reduce the engine speed to low idle. Place the transmission in neutral. Engage the parking brake. Lower the work tool to the ground. Stop the engine.

If the machine moved during the test, consult your Cat dealer for a brake inspection. Make any necessary repairs before the machine is returned to operation.

Parking Brake Holding Ability Test

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Personal injury can result if the machine moves while testing. If the machine begins to move, reduce the engine speed immediately and apply the service brake pedal.

This test is performed when the parking brake is engaged. If the machine begins to move, compare the engine rpm to the engine rpm of a prior test. This will indicate the amount of system deterioration.

1. Start the engine. Raise the work tool slightly. Engage the parking brake.

2. Move the hydraulic lockout control to the UNLOCKED position.

3. Place the transmission in SECOND SPEED FORWARD while only the parking brake is engaged.

   The parking brake indicator light should come on.

4. Gradually increase the engine speed to high idle. The machine should not move.

5. Reduce the engine speed. Place the transmission in neutral. Lower the work tool to the ground. Stop the engine.

If the machine moved during the test, consult your Cat dealer for a brake inspection. Make any necessary repairs before the machine is returned to operation.