Removal and Replacement

Master Cylinder Replacement
Warning: Refer to Brake Fluid Irritant Warning Brake Fluid Irritant Warning.


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

Removal Procedure




1. Deplete the vacuum reserve from the vacuum brake booster by removing the vacuum check valve (1) from the vacuum brake booster grommet.
2. Disconnect the brake fluid level indicator switch electrical connector.




3. 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.




4. 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.




5. Remove the master cylinder nuts (1).
6. Remove the master cylinder.
7. Inspect the master cylinder to vacuum brake booster seal for damage and replace, if necessary.
8. Remove the master cylinder reservoir, if necessary. Refer to Master Cylinder Reservoir Replacement Service and Repair.

Installation Procedure

1. Install the brake master cylinder reservoir to the master cylinder, if removed. Refer to Master Cylinder Reservoir Replacement Service and Repair.
2. Bench bleed the master cylinder. Refer to Master Cylinder Bench Bleeding Master Cylinder Bench Bleeding.
3. Ensure the master cylinder to vacuum brake booster seal is properly seated on the master cylinder barrel.




4. Install the master cylinder to the vacuum brake booster.

Caution: Refer to Fastener Caution Fastener Caution.

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




6. Connect the master cylinder primary brake pipe fitting (1) and tighten to 32 Nm (24 lb ft).




7. Connect the master cylinder secondary brake pipe fitting (1) and tighten to 32 Nm (24 lb ft).




8. Install the vacuum check valve (1) to the vacuum brake booster grommet.
If necessary, a small amount of denatured alcohol may be used as a lubricant for assembly. Do not use soap.
9. Connect the brake fluid level indicator switch electrical connector.
10. 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).