Hyundai Coupes/Sedans 1986-1993 Repair Guide

Brake Disc (Rotor)

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REMOVAL & INSTALLATION



See Figure 1



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Fig. Fig. 1: Measuring rear brake disc thickness and runout-Sonata with rear disc brakes

  1. Loosen the rear wheel lug nuts.
  2.  
  3. Raise the rear end and support safely.
  4.  
  5. Remove the rear wheels.
  6.  
  7. Remove the caliper assembly from the anchor plate and support it with wire. DO NOT disconnect the brake line from the caliper!
  8.  
  9. Remove the set screw from the face of the rotor and pull the rotor from the rear hub.
  10.  
  11. Inspect the rotor as described below.
  12.  
  13. Position the rotor onto the hub and secure it with the setscrew.
  14.  
  15. Install the caliper assembly.
  16.  
  17. Mount the rear wheels and lower the vehicle.
  18.  
  19. Refill the master cylinder reservoir to the proper level. Pump the brake pedal several times to the set the rear pads.
  20.  

INSPECTION



  1. Loosen the wheel nuts.
  2.  
  3. Raise the rear end and support on jackstands.
  4.  
  5. Remove the rear wheels.
  6.  
  7. Using a micrometer or Vernier caliper measure the rotor thickness. Minimum allowable rotor thickness is 10.5mm.
  8.  
  9. Mount a magnetic base dial indicator to the strut member and zero the indicator stylus on the face of the rotor. Rotate the rotor 360 by hand and record the run-out. Maximum rotor disc run-out is 0.13mm.
  10.  
  11. If the thickness and run-out do not meet specifications, replace the rotor.
  12.  

 
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