Brake Torque Test

This test is designed to identify engine-related vibrations that were not uncovered with the neutral run-up test. This test also works for vibrations that are sensitive to the engine load or to the torque. This test will probably not apply to vibrations which are related only to the speed of the vehicle.

CAUTION: Refer to Road Test Caution in Service Precautions.

1. Apply the park brake.
2. Block the front wheels.
3. Step firmly on the brake pedal.
4. Place the vehicle in DRIVE.
5. Slowly increase the engine speed while looking for vibrations that match the customer's description.
6. Observe the engine speed (RPM) and the frequency (if possible) at which the disturbance occurs.
7. If necessary, place the vehicle in REVERSE gear and repeat steps 5 and 6.