Nissan Z - ZX 1970-1988 Repair Guide

Brake Disc (Rotor)


To remove the wheel bearings, refer to the Wheel Bearing removal and installation procedures in General Information & Maintenance , and replace the wheel bearings.


See Figure 1

  1. Refer to the Rear Brake Caliper, Removal and Installation procedures, in this section and remove the caliper.
  3. Pull the rotor from the hub.

Click image to see an enlarged view

Fig. Fig. 1: Pull the rotor from the hub after the caliper has been removed

  1. To install, position the rotor to the hub then install the caliper as outlined earlier.


  1. Check the surface for wear or scoring. Deep scoring, grooves or rust pitting can be removed by refacing. Minimum thickness is 0.33 in. (8.6mm) for 1970-83 models and 0.35 in. (9.0mm) 1984-86 models or 0.70 in. (18.0mm) for 1987-88 models. Replace the rotor if the rotor will be thinner than this after refinishing, it must be replaced.
  3. Check the disc parallelism; it must be less than 0.001 in. (0.03mm). If over this specification, the disc must be replaced.
  5. Install the disc and the wheel nuts. Check the run-out with a dial indicator. If run-out exceeds 0.006 in. (0.15mm) for 1970-81 models and 0.003 in. (0.07mm) for 1982 and later models, the disc needs to be refinished or replaced.