REMOVAL & INSTALLATION
- Clean the outside of the master cylinder thoroughly, particularly around the cap and fluid lines. Disconnect the fluid lines and cap them to exclude dirt.
- If equipped with a fluid level sensor, disconnect the wiring harness from the master cylinder.
- Disconnect the brake fluid tubes, then plug the openings to prevent dirt from entering the system.
- Remove the mounting bolts at the firewall or the brake booster (if equipped) and remove the master cylinder from the vehicle.
- Install the master cylinder to the vehicle. Connect all brake lines and fluid level sensor wiring if so equipped. Refill the reservoir with brake fluid and bleed the system.
Ordinary brake fluid will boil and cause brake failure under the high temperatures developed in disc brake systems; use DOT 3 brake fluid in the brake systems. The adjustable pushrod is used to adjust brake pedal free-play. If the pushrod is not adjustable, there will be shims between the cylinder and the mount. These shims, or the adjustable pushrod, are used to adjust brake pedal free-play.
Master cylinders are supplied to Datsun/Nissan by two manufacturers: Nabco and Tokico. Parts between these manufacturers are not interchangeable. Be sure you obtain the correct rebuilding kit for your master cylinder.
The master cylinder can be disassembled using the illustrations as a guide. Clean all parts in clean brake fluid. Replace the cylinder or piston as necessary if clearance between the two exceed 0.15mm. Lubricate all parts with clean brake fluid on assembly. Master cylinder rebuilding kits, containing all the wearing parts may be available to simplify overhaul. In many cases, however, it is more time and cost effective to replace a faulty master cylinder with a new or aftermarket rebuilt one.