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Thickness and Parallelism

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  1. Raise and support the vehicle (see LIFT AND SUPPORT POINTS ).
  2. Remove the rear wheels.
  3. Remove the brake pads (see REAR BRAKE PAD INSPECTION AND REPLACEMENT ).
  4. Using a micrometer (A), measure brake disc/drum thickness at eight points, about 45 ° apart and 10 mm (0.39 in) in from the outer edge of the brake disc/drum. Replace the brake disc/drum if the smallest measurement is less than the maximum refinishing limit.

    Brake disc/drum thickness: 

    Standard: 10.9-11.1 mm (0.429-0.437 in.) 

    Maximum refinishing limit: 9.0 mm (0.354 in.) 

    Brake disc parallelism: 0.015 mm (0.00059 in.) max. 

    NOTE:

    This is the maximum allowable difference between the thickness measurements.

    Fig 1: Measuring Brake Disc/Drum Thickness
    G00510920Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. If the brake disc/drum is beyond the service limit for parallelism, refinish the brake disc/drum with a Honda-approved commercially available on-car brake lathe.
    NOTE:

    If the brake disc/drum is beyond the service limit for refinishing, replace it (see REAR BRAKE DISC REPLACEMENT ).

  6. Inspect the brake disc/drum runout.
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