Subaru ff-1/1300/1400/1600/1800/Brat 1970-1984 Repair Guide

Brake Disc (Rotor)

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REMOVAL & INSTALLATION



  1. Raise the vehicle and support it with jackstands.
  2.  
  3. Remove the front wheel, handbrake cable, guides, caliper and caliper support in the same manner as outlined in this section.
  4.  
  5. Safety wire the caliper to a suspension member, so that it is out of the way.
  6.  
  7. Unfasten the two bolts which hold the caliper bracket to the housing and remove the bracket from the housing.
  8.  
  9. Remove the axle shaft nut and pull the disc off the axle shaft with a puller.
  10.  
  11. Remove the 4 bolts which hold the disc to the hub.
  12.  
  13. Reverse the above process to install the rotor.
  14.  
  15. Tighten caliper bracket bolts to 36-51 ft. lbs. (48-69 Nm).
  16.  

INSPECTION



  1. Check the disc for any obvious defects such as excessive rust, chipping, or deep scoring. Light scoring is normal on disc brakes.
  2.  
  3. Install a dial indicator on the caliper so that its feeler will contact the disc about 0.20 in. (5 mm) from the outer edge of the rotor.
  4.  
  5. Turn the disc and observe the runout reading. If the reading exceeds 0.0039 in. (0.10 mm), the disc should be replaced.
  6.  


WARNING
All brake rotors (discs) have a minimum thickness dimension cast into them, on the hub between the lugs. This is the minimum wear dimension and not a refinish dimension. Do not reuse a brake rotor that will not meet specifications. Replace with a new rotor.

Refinishing of brake rotors can be handled at machine shops equipped for brake work.



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Fig. Fig. 1 Loosen the two bolts which hold the caliper bracket to the housing, then remove the bracket



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Fig. Fig. 2 Remove the axle shaft nut and pull the disc off the axle shaft with a puller



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Fig. Fig. 3 Remove the 4 bolts which hold the disc to the hub



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Fig. Fig. 4 Separate the disc from the hub

 
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