Brake System Inspection

Brake Discs

NOTICE: Using an impact tool without a torque socket will lead to unevenly tightened wheel nuts. This causes brake disc on-vehicle lateral runout and brake roughness.

1. Inspect the brake discs and measure the brake disc thickness. Record the measurements. Refer to Specifications.
- If the brake disc is cracked or otherwise damaged, install a new brake disc. For additional information, refer to Front Disc Brake Front Disc Brake for front brakes or Rear Disc Brake Brake Disc for rear brakes.

- If the measurement is below the minimum thickness specification, install a new brake disc. For additional information, refer to Front Disc Brake Front Disc Brake for front brakes or Rear Disc Brake Brake Disc for rear brakes.

- If the diagnosis has revealed vibration in the steering wheel, seat or pedal while braking that varies with vehicle speed, machine the brake disc. Heavily scored brake discs, similar to that caused by pads worn down to the backing plate, should also be machined. In order to machine, discs must be above the minimum thickness specification. For additional information, refer to Specifications and Brake Disc Machining Procedures.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Brake Discs

Use the Manual With the Right Hardware

When to See a Mechanic

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