GM Corvette 1963-1982 Repair Guide

Wheel Bearings

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See Figures 1 and 2

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Fig. Fig. 1: Exploded view of the rear wheel bearings and related components



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Fig. Fig. 2: Cross-sectional view of the spindle

ADJUSTMENT



The spindle bearings are of a tapered, roller design and require an end-play of 0.001 in. to 0.008 in. To measure end-play, lift the rear wheels clear off the ground and disconnect the axle driveshaft from the spindle. There is insufficient clearance to drop the axle driveshaft when the rear suspension is correctly adjusted so the strut rod eccentric cam/bolt must be loosened and rotated so that the strut rod forces the trailing arm away from the vehicle centerline and permits the driveshaft to be lowered.

  1. Mark the eccentric cam and the attaching bracket so that the correct camber adjustment can be returned to.
  2.  
  3. Remove the rear wheels and attach a dial indicator to the torque arm so that its indicator point will contact the end of the spindle.
  4.  
  5. Move the disc in and out and observe the dial indicator reading. If the reading is not within the 0.001 in. to 0.008 in. tolerances, the bearings must be adjusted.
  6.  
  7. Set the handbrake and remove the drive spindle nut.
  8.  
  9. Release the brake and remove the brake drum or caliper and disc as described in Brakes .
  10.  
  11. Remove the spindle flange then reinstall the nut until it is flush with the end of the spindle. Use a puller to withdraw the spindle from its support.
  12.  
  13. Remove the spindle-support dust deflector and pry out the inner seal. Remove the inner bearing race, roller assembly, shim, and bearing spacer from the spindle support.
  14.  
  15. Check the size of the old shim and, if the dial indicator reading exceeded 0.008 in., replace it with one that is thinner by the required amount to bring end-play within allowable tolerances. A dial indicator reading of less than 0.001 in. requires a shim thick enough to move the end-play beyond the 0.001 in. minimum.
  16.  

Shims are available in 0.003 in. increments and range in thickness from 0.097 in. to 0.145 in.

  1. Insert the spindle bearing and seal in the spindle support and install the bearing spacer and shim.
  2.  
  3. Place the inner race and roller assembly on the spindle and a suitable spacer to aid in pressing the bearing into position.
  4.  
  5. Start the nut onto the spindle and against the press spacer. Tighten the nut and press the bearing in a sufficient amount to permit the installation of the spindle drive flange.
  6.  
  7. Remove the spindle nut and washer and discard the nut. Use a new replacement for assembly.
  8.  
  9. Tap the replacement inner seal in place, install the dust deflector, drive flange, spindle washer, and nut. Torque the nut to 100 ft. lbs. and install a new cotter pin.
  10.  

REPLACEMENT Outer Bearing



  1. With the wheel spindle removed, attach a bearing puller around the bearing and secure the tool and spindle in a press, and remove the bearing from the spindle.
  2.  
  3. Remove the outer seal and replace, if necessary.
  4.  
  5. Position the replacement seal on the spindle before installing the bearing assembly.
  6.  
  7. Pack the replacement bearing with a high melting point grease and place it on the spindle, large end facing the spindle shoulder.
  8.  
  9. Support the spindle and press the bearing into position. Install the reassembled spindle to the spindle support.
  10.  

 
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