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Home >> Mazda >> 2006 >> Tribute s, 4WD >> Repair and Diagnosis >> Brakes >> Traction Control >> General Procedures (Brakes) >> Brake Disc RUNOUT Check

Brake Disc RUNOUT Check

CAUTION:
  • The brake disc runout specification must be met to make sure of correct brake performance without roughness complaints.
CAUTION:
  • Do not install brake discs that are less than the minimum thickness specified. Do not machine a brake disc below the minimum thickness specification.
NOTE:
  • When installing brake discs, always align the painted match marks on the brake disc with those on the front hub.
NOTE:
  • When installing brake discs, always apply high temperature nickel anti-seize lubricant to the brake disc-to-front hub mating surfaces.
  1. Do not remove the tire and wheel assembly. Tighten the wheel nuts to specification.
  2. With the vehicle in NEUTRAL, position it on a hoist. See LIFTING .
  3. Assemble the special tool, using the spherical tip extension.
  4. Locate an opening on the inboard side of the dust shield that allows the dial indicator tip to be positioned at least 5 mm (0.2 in) from the outer edge of the brake disc.
    NOTE:
    • Do not clamp the gauge set to a vehicle component separated from the brake disc by a flexible joint, such as a ball joint or body mount.
  5. Clamp the special tool on the vehicle, making sure the flexible indicator arm and probe tip do not touch the dust shield or tire while rotating.
    Fig 1: Clamping Special Tool On Vehicle
    G04320705Courtesy of MAZDA MOTORS CORP.
  6. Rotate the wheel for 6 revolutions and record the total indicated runout.
  7. If the total runout exceeds the maximum specification, remove the brake disc. See BRAKE DISC - FRONT .
  8. Clean the disc brake mounting face of dirt, rust and foreign material.
    Fig 2: Measuring Indicated Runout Of Hub Face Outside Stud Circle
    G04320706Courtesy of MAZDA MOTORS CORP.
  9. Measure and record the total indicated runout of the hub face outside the stud circle.
  10. Install a new front hub if the total indicated runout exceeds the maximum specification. See WHEEL BEARING AND WHEEL HUB .
    • Repeat the hub runout measurement.
  11. If the brake disc total indicated runout is still out of specification, measure and record the thickness of the brake disc. If thickness is sufficient to machine the brake disc to the runout specification, go to Step 12. If the thickness is not sufficient, install a new brake disc and recheck the total indicated runout.
    NOTE:
    • Brake disc machining must be done with an on-vehicle lathe. Follow the lathe manufacturer's instructions.
  12. Using the special tool, machine the brake disc if final thickness will not be less than the minimum specification. Recheck the brake disc runout.
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