Brake Rotor/Drum Balance Inspection

Brake Rotor/Drum Balance Inspection

1. Support the vehicle drive axle(s) on a suitable hoist. Refer to Lifting and Jacking the Vehicle (Service and Repair) in General Information.
2. Remove the tire and wheel assemblies from the drive axle(s). Refer toTire and Wheel Removal and Installation in Tires and Wheels.
Caution: Refer to Work Stall Test Caution in Cautions and Notices.
3. Reinstall the wheel nuts in order to retain the brake drums and brake rotors, if equipped with all-wheel drive (AWD).
4. Run the vehicle at the concern speed while inspecting for the presence of the vibration.

Notice: Do not depress the brake pedal with the brake rotors and/or the brake drums removed, or with the brake calipers repositioned away from the brake rotors, or damage to the brake system may result.

5. If the vibration is still present, remove the brake drums and brake rotors, if equipped with AWD, from the drive axle(s), then run the vehicle back to the concern speed. Refer to Brake Rotor Replacement in Disc Brakes and/or Brake Drum Replacement in Drum Brakes.
6. If the vibration is eliminated when the brake drums and brake rotors, if equipped with AWD, are removed from the drive axle(s), repeat the test with one drum/rotor installed at a time. Replace the drum/rotor that is causing or contributing to the vibration concern. Refer to Brake Rotor Replacement in Disc Brakes and/or Brake Drum Replacement in Drum Brakes.




7. If a brake rotor and/or brake drum was replaced as a result of the following the previous steps, or if necessary to confirm the results obtained during the previous steps, and/or to check the non-drive axle components, perform the following:

1. Mount the brake rotor/drum on a balancer in the same manner as a tire and wheel assembly.

Important: Check brake drums/rotors for static imbalance only; ignore the dynamic imbalance readings.


2. Inspect the rotor/drum for static imbalance.



There is not a set tolerance for brake rotor/drum static imbalance. (However, any brake rotor/drum measured in this same manner which is over 21 g [3/4 oz] may have the potential to cause or contribute to a vibration.) Rotors/drums suspected of causing or contributing to a vibration should be replaced. Any rotor/drum that is replaced should be checked for imbalance in the same manner.