Toyota Celica 1994-1998 Repair Guide

Brake Disc (Rotor)

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REMOVAL & INSTALLATION



See Figures 1, 2, 3 and 4


CAUTION
Brake pads or shoes may contain asbestos, which has been determined to be cancer causing agent. Never clean the brake surfaces with compressed air! Avoid inhaling any dust from any brake surface! When cleaning brake surfaces, use a commercially available brake cleaning fluid.

  1. Loosen the wheel lugs, then raise and safely support the of the car. Remove the wheel(s) and temporarily attach the rotor disc with two bolts.
  2.  

There are two spots to place bolts for retaining the rotor to the hub.



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Fig. Fig. 1: Place two bolts in the threaded area to retain the rotor to the hub

  1. Remove the caliper from the rotor and suspend on wire from the coil spring.
  2.  



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Fig. Fig. 2: Once removed, support the caliper on the coil spring with bungie cords or wire

  1. Remove the two wheel bolts and pull the disc from the axle hub.
  2.  



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Fig. Fig. 3: Remove the two bolts in the rotor ...



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Fig. Fig. 4: ... and pull the rotor off with two hands, it may be heavy

To install:
  1. Place the rotor into position and retain with the two bolts.
  2.  
  3. Attach the caliper to the rotor.
  4.  
  5. Remove the bolts from the rotor and install the wheel.
  6.  
  7. Hand tighten the lug nuts, lower the vehicle and tighten the lug nuts.
  8.  

INSPECTION



Front

See Figure 5

Examine the disc. If it is worn, warped or scored, it must be replaced. Check the thickness of the disc against the specifications given in the Disc and Pad Specifications chart. If it is below specifications, replace it. Use a micrometer to measure the thickness.

The disc run-out should be measured before the disc is removed and again, after the disc is installed. Use a dial indicator mounted on a magnet type stand (attached to the shock absorber shaft) to determine runout. Position the dial so the stylus is 0.394 inch (10mm) from the outer edge of the rotor disc. The maximum allowable runout is 0.05 inch (0.20mm). If runout exceeds the specification, replace the disc.



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Fig. Fig. 5: A dial indicator is used to measure the disc run-out

Be sure that the wheel bearing nut is properly tightened. If it is not, an inaccurate run-out reading may be obtained. If different run-out readings are obtained with the same disc, between removal and installation, this is probably the cause.

Rear

Examine the disc. If it is worn, warped or scored, it must be replaced. Check the thickness of the disc against the specifications given in the Disc and Pad Specifications chart. If it is below specifications, replace it. Use a micrometer to measure the thickness.

The disc run-out should be measured before the disc is removed and again, after the disc is installed. Use a dial indicator mounted on a magnet type stand (attached to the shock absorber shaft) to determine runout. Position the dial so the stylus is 0.394 inch (10mm) from the outer edge of the rotor disc. The maximum allowable runout 0.0059 inch (0.15mm). If the runout exceeds the specification, replace the disc.

 
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