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Front Brake Disc Inspection: Runout

WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise the front of the vehicle, and support it with safety stands in the proper locations (see LIFT AND SUPPORT POINTS ).
  2. Remove the front wheels.
  3. Remove the brake pads (see FRONT BRAKE PAD INSPECTION AND REPLACEMENT  ).
  4. Inspect the brake disc surface for damage and cracks. Clean the brake disc thoroughly, and remove all rust.
  5. Install suitable flat washers (A) and wheel nuts, and tighten the wheel nuts to the specified torque to hold the brake disc securely against the hub.
    Fig 1: Measuring Runout
    G03641342Courtesy of AMERICAN HONDA MOTOR CO., INC.
  6. Set up the dial gauge against the brake disc as shown, and measure the runout at 10 mm (3/8 in.) from the outer edge of the brake disc.

    Brake disc runout: 

    Service limit: 0.10 mm (0.004 in.) 

  7. If the brake disc is beyond the service limit, refinish the brake disc with an on-car brake lathe. The Kwik-Lathe produced by Kwik-Way Manufacturing Co. and the "Front Brake Disc Lathe" offered by Snap-on Tools Co. are approved for this operation.

    Max. refinish limit: 26.0 mm (1.02 in.) 

    NOTE:
    • If the brake disc is beyond the service limit for refinishing, replace it (see step 3,KNUCKLE/HUB REPLACEMENT ).
    • A new brake disc should be refinished if its runout is greater than 0.10 mm (0.004 in.).
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