Nissan Z - ZX 1970-1988 Repair Guide

Driveshaft and U-Joints

Print

REMOVAL & INSTALLATION



  1. Raise and support the vehicle on jackstands.
  2.  

It may be necessary to move the exhaust pipe and insulator out of the way on some models.

  1. Scribe matchmarks on the rear of the driveshaft and the companion flange.
  2.  
  3. Remove the bolts and nuts from the companion flange.
  4.  
  5. Pull the rear of the driveshaft downward and pull the splined portion at the front out of the transmission. Plug the hole in the transmission extension housing.
  6.  
  7. To install, oil the splines and reverse the removal procedures. Make sure that the marks made in Step 3 align. Tighten the flange bolts to 18-23 ft. lbs. (25-32 Nm) on 1970-74 models, 25-33 ft. lbs. (35-45 Nm) on 1975-84 models and 29-33 ft. lbs. (39-44 Nm) 1985-88 models.
  8.  

U-JOINT OVERHAUL



See Figures 1 and 2

The universal joints used on 1975 and later models cannot be disassembled. If defective, the entire driveshaft must be replaced as a unit.

  1. Clean all the parts in a safe solvent.
  2.  
  3. Mark the driveshaft and joint so that they can be reassembled in exactly the same position.
  4.  
  5. Using snapring pliers or equivalent, remove the snaprings.
  6.  



Click image to see an enlarged view

Fig. Fig. 1: Removing the U-joint bearing from the driveshaft



Click image to see an enlarged view

Fig. Fig. 2: Snapring thickness and color coding chart

  1. Using a soft hammer, lightly tap the base of the yoke and remove each bearing race.
  2.  
  3. Check the spider bearing journals for dents or brinell marks. Make sure that the yoke holes are not worn.
  4.  
  5. Check the snaprings, bearings and seal rings, replace the parts (as necessary).
  6.  
  7. Check the shaft tube for dents or cracks, then replace (if necessary).
  8.  
  9. To assemble, reverse the disassembly procedures.
  10.  

The needle rollers may be held in the races with grease. Reusable bearings should be carefully packed with grease.

  1. Install the snaprings that are equal in thickness opposite each other. Choose the thickness so that play will not exceed 0.0008 in. (0.02mm).
  2.  
  3. Check the frictional resistance of the joint, it should not exceed 9 in. lbs. (1 Nm) on the 240 Z models or 13 in. lbs. (1.4 Nm) on the 260 Z models.
  4.  

 
label.common.footer.alt.autozoneLogo