Brake Master Cylinder: Service and Repair

Brake Master Cylinder Replacement

NOTICE
Do not spill brake fluid on the vehicle; it may damage the paint. If brake fluid gets on the paint, wash it off immediately with water.

NOTE:

- Be careful not to damage or bend the brake lines during removal and installation.
- After removal, plug the ends of the hoses and the joints to prevent spilling brake fluid.

1. Remove the air cleaner: Except Si model Service and Repair, Si model Service and Repair.

2. Remove the reservoir cap and brake fluid from the master cylinder reservoir with a syringe.

3. Disconnect the brake fluid level switch connector (A).





4. Remove the reservoir tank mounting bolt (B).

5. Disconnect the brake lines (A) from the master cylinder (B). To prevent spills, cover the hose joints with clean rags or shop towels.





6. Remove the master cylinder mounting nuts (C) and washers (D).

7. Remove the master cylinder from the brake booster (E). Be careful not to bend or damage the brake lines when removing the master cylinder.

8. Remove the rod seal (F) from the master cylinder.

NOTE: During installation, set the new rod seal onto the master cylinder with its grooved side (G) toward the master cylinder.

9. Install the master cylinder with a new rod seal in the reverse order of removal, and note these items:

- Coat the inner bore lip and outer circumference of the new rod seal with the Shin-Etsu silicone grease (P/N 08798-9013).
- Make sure not to get any silicone grease on the terminal part of the connectors and switches, especially if you have silicone grease on your hands or gloves.
- Check the brake pedal height and free play after installing the master cylinder, and adjust if necessary Adjustments.

10. Bleed the brake system Service and Repair.

11. Spin the wheels to check for brake drag.