Nissan Z - ZX 1970-1988 Repair Guide

Clutch Master Cylinder

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See Figure 1



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Fig. Fig. 1: Exploded view of clutch master cylinder

REMOVAL & INSTALLATION



  1. Remove the snapring and the pushrod clevis pin from the master cylinder.
  2.  
  3. Disconnect the clutch tube from the master cylinder and drain the fluid.
  4.  

On some fuel injected models, it may be necessary to remove the windshield washer tank and the dropping resistor (out of the way), so that the clutch master cylinder may be removed.

  1. Remove the mounting bolts and the cylinder from the vehicle.
  2.  
  3. To install, reverse the removal procedures. Tighten the master cylinder-to-dash nuts/bolts to 5.8-8.7 ft. lbs. (7.5-11.3 Nm). Bleed the air from the clutch release system.
  4.  

OVERHAUL



See Figure 1

  1. Remove the dust cover (discard it) and the stopper ring from the master cylinder body.
  2.  
  3. Remove the pushrod and the piston assembly.
  4.  
  5. Remove the piston cups (discard them), the spring seat from the piston and the supply valve (if necessary).
  6.  
  7. Using clean brake fluid, wash all of the parts.
  8.  
  9. Check the cylinder for uneven wear/or damage and measure the clearance between the piston and cylinder. The clearance should not be more than 0.006 in. (0.15mm). If defects are found, replace the master cylinder.
  10.  
  11. Inspect the dust cover, the reservoir and the cap, then replace the parts as necessary.
  12.  
  13. Inspect the return valve springs and replace if broken or weak.
  14.  
  15. Inspect the hose and tube, then replace the parts as necessary.
  16.  
  17. To assemble, use a new piston cup, dip the parts in clean brake fluid, coat the piston and the cylinder with fluid, then reverse the disassembly procedures.
  18.  

When installing the piston cup, make sure it is facing the right direction.

 
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