Removal and Replacement

Master Cylinder Replacement

Removal Procedure

Warning: Refer to Brake Fluid Irritant Warning Brake Fluid Irritant Warning.


Caution: Refer to Brake Fluid Effects on Paint and Electrical Components Caution Brake Fluid Effects on Paint and Electrical Components Caution.

1. With the engine OFF, apply and release the brake pedal several times until the pedal becomes firm to deplete the power vacuum brake booster vacuum reserve.

2. Disconnect the clutch master cylinder supply hose, if equipped.

3. Disconnect the brake fluid level indicator switch electrical connector.




4. Disconnect the master cylinder secondary brake pipe fitting (1).
Cap the brake pipe fitting and plug the master cylinder outlet port to prevent brake fluid loss and contamination.




5. Disconnect the master cylinder primary brake pipe fitting (1).
Cap the brake pipe fitting and plug the master cylinder outlet port to prevent brake fluid loss and contamination.




6. Remove the master cylinder nuts (1).




7. Remove the master cylinder (1) from the power vacuum brake booster.




8. Remove the master cylinder O-ring seal (1).
Inspect the O-ring seal for damage and replace, if necessary.

Installation Procedure




1. Install the master cylinder O-ring seal (1).
Position the O-ring seal in the groove in the master cylinder body.

2. If installing a new master cylinder, bench bleed the master cylinder. Refer to Master Cylinder Bench Bleeding Master Cylinder Bench Bleeding.




3. Install the master cylinder (1) to the power vacuum brake booster.





Caution: Refer to Fastener Caution Fastener Caution.

4. Install the master cylinder nuts (1) and tighten to 25 Nm (18 lb ft).




5. Connect the master cylinder primary brake pipe fitting (1) and tighten the fitting to 23 Nm (17 lb ft).




6. Connect the master cylinder secondary brake pipe fitting (1) and tighten the fitting to 23 Nm (17 lb ft).

7. Connect the clutch master cylinder supply hose, if equipped.

8. Connect the brake fluid level indicator switch electrical connector.

9. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Manual) Hydraulic Brake System Bleeding (Manual)Hydraulic Brake System Bleeding (Pressure) Hydraulic Brake System Bleeding (Pressure).