GM Corvette 1963-1982 Repair Guide

Driveshaft and Universal Joints

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REMOVAL & INSTALLATION



See Figures 1 and 2

Click image to see an enlarged view

Fig. Fig. 1: Driveline components, including the driveshaft (also referred to as the propeller shaft)



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Fig. Fig. 2: View of the differential and axle driveshaft mounting-1963-79 vehicles shown, later models similar

Follow steps 1, 5, 6, 7, and 8 to remove the driveshaft from 1980 and later Corvettes. During installation, torque the bearing strap fasteners to 15 ft. lbs.

  1. Jack the car to a convenient working height and support with jackstands.
  2.  
  3. Wedge a block of wood between the top of the differential carrier and the car floor to keep the carrier from twisting on its rubber mounts when the front support bracket is disconnected.
  4.  
  5. Loosen and remove the carrier support-bracket front bolt. Remove the two rubber biscuits and large washer. Discard and replace the rubber biscuits if they show any deterioration.
  6.  
  7. Remove the two side bolts or front through-bolt on later models from the carrier support bracket. Loosen, but do not remove, the rear thru-bolt and swivel the bracket down and away.
  8.  
  9. Mark the driveshaft so that it may be reinstalled in its original position. Remove the U-bolts from both ends of the driveshaft.
  10.  
  11. Push the front yoke into the transmission and remove the driveshaft by pulling it down and to the rear.
  12.  
  13. Check the universal joints and replace damaged or worn units. Grease both universal joints before reinstalling them.
  14.  

To install:
  1. Install the driveshaft and attach to the transmission yoke and carrier flange.
  2.  
  3. Install the front bolt biscuits and flat washer and raise the bracket to the crossmember.
  4.  

At this point it may be necessary to install a jack under the carrier. This will aid in lining up the side-bracket bolt holes and compressing the rubber biscuits.

  1. Install the front crossmember bolt and nut. Install the side bolts. Tighten the front bolt to 30 ft. lbs. Torque the two side bolts to 45-55 and the long through-bolt to 40-60 ft. lbs.
  2.  

The carrier support bracket bolts frequently work loose, causing vibration and rear axle hop. Periodic torquing of these four bolts will eliminate this problem.

UNIVERSAL JOINT OVERHAUL



See Figure 3

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Fig. Fig. 3: Disassembled view of a common universal joint assembly

Except for early Stingrays, Corvettes are equipped with lubed-for-life universal joints without grease fittings. Whenever universal joints are removed from the car, they should be checked and regreased.

  1. Remove the joints from the driveshaft. These can sometimes be tapped out, but stubborn joints must be pressed out.
  2.  
  3. Remove the bearing cups and seals, being careful not to lose any rollers.
  4.  
  5. Inspect the cups and trunnion ends for damage or wear. Ensure that all bearing rollers are present. Replace the rubber seals.
  6.  
  7. Clean the cups and rollers. Repack the cup with grease and reassemble the joint.
  8.  

 
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