Nissan Z - ZX 1970-1988 Repair Guide

Coil Springs

Print

REMOVAL & INSTALLATION



See Figures 1, 2, 3, 4 and 5

This procedure requires the use of a spring compressor; if one is not available, DO NOT disassemble the strut.


CAUTION
The coil springs are retained under considerable pressure. They can exert enough force to cause serious injury. Exercise extreme caution when disassembling the strut for coil spring removal.

  1. Refer to the Strut removal and installation procedures, in this section and remove the strut assembly.
  2.  
  3. Bolt the bottom of the strut to the Strut and Steering Gear Housing Attachment tool No. KV48100300 (1970-83 models) or No. ST35652000 (1984-88 models) and secure the tool in a vise.
  4.  



Click image to see an enlarged view

Fig. Fig. 1: With the strut securely mounted in a vise, attached the spring compressor



Click image to see an enlarged view

Fig. Fig. 2: As the compressor tool is tightened, the coil spring is forced to compress



Click image to see an enlarged view

Fig. Fig. 3: With the spring compressed, secure the upper mount and remove the piston rod nut



Click image to see an enlarged view

Fig. Fig. 4: With the spring still compressed, remove the assembly from the strut



Click image to see an enlarged view

Fig. Fig. 5: When re-assembling, apply grease to these areas

  1. Install a Spring Compressor tool No. ST3565S001 (1970-83) or small compressor (1984-88 models) onto the coil spring.
  2.  

When installing the spring compressor tool, be sure to engage the tool evenly on a minimum of three coils, paying particular attention not to contact or stress the strut piston rod.

  1. Compress the spring just enough to allow the upper mount to be turned by hand.
  2.  
  3. Secure the upper portion of the strut assembly with a prytool or other suitable device, and unscrew the self-locking nut from the piston rod.
  4.  

After removing the self-locking nut from the piston rod, discard it and use a new one on assembly.

  1. Remove the mounting insulator, the strut bearing, the dust seal, the spring seat and the dust cover.
  2.  
  3. Slowly and cautiously unscrew the spring compressor until all of the spring tension is relieved. Remove the spring and the rubber bumper.
  4.  


CAUTION
DO NOT disassemble the shock absorber.

To install:
  1. Pull the piston rod to the top of its stroke, then install the rubber bumper to hold the rod in place.
  2.  
  3. Install the spring compressor on the coil spring, if not already installed. Leave the upper 2 1 / 2 -3 coils free to prevent interference with the upper spring seat. Compress the spring and install on the strut.
  4.  
  5. Lubricate the dust seal with multi-purpose grease; lubrication points are shown in the illustration.
  6.  
  7. Install the dust cover, the upper spring seat, the dust seal, the bearing and the insulator.
  8.  

DO NOT allow the piston rod to retract into the shock absorber. If it should fall, screw a nut onto the rod and pull the rod out. DO NOT use pliers or the like to grip the rod, because the rod surface will be damaged, resulting in leaks, uneven operation and seal damage. Be extremely careful in all operations not to stress or damage the rod.

  1. Install a new self-locking nut on the piston rod. Tighten the nut temporarily to about 35 ft. lbs. (55 Nm).
  2.  
  3. Place the spring in position between the upper and lower spring seats. Slowly and carefully unscrew the compressor until all spring tension is relieved, then remove the compressor.
  4.  
  5. Raise the bound bumper to the upper spring seat.
  6.  
  7. To install the strut, reverse the removal procedures. After installation, tighten the piston rod nut to 54-69 ft. lbs. (75-95 Nm) for 1970-78, 43-54 ft. lbs. (60-75 Nm) for 1979-83 or 51-65 ft. lbs. (69-88 Nm) for 1984-88 models.
  8.  

 
label.common.footer.alt.autozoneLogo