Caution: Refer to Brake Fluid Irritant Caution in the Preface section.
Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in the Preface section.
Removal Procedure
- Apply the park brake and block the wheels.
- Disconnect the electrical connector from the brake fluid level sensor, if applicable.
- Remove the driver side upper fender support.
Important: Install a rubber cap or plug to the exposed brake pipe fitting ends in order to prevent brake fluid loss and contamination.
- Disconnect the brake pipes from the master cylinder.
- Plug the open brake pipe ends.
- For vehicles with JL4, crimp the hose (4) at the master cylinder to prevent fluid from leaking out.
- Remove the clamp (5) and hose (4) from the reservoir. Plug the port in the reservoir.
- Remove the master cylinder mounting nuts.
- Remove the master cylinder from the vehicle.
- Remove the master cylinder reservoir. Refer to
Master Cylinder Reservoir Replacement
.
Installation Procedure
- Install the master cylinder reservoir. Refer to
Master Cylinder Reservoir Replacement
.
- Bench bleed the master cylinder. Refer to
Master Cylinder Bench Bleeding
.
- Install the master cylinder to the vehicle.
Notice: Refer to Fastener Notice in the Preface section.
- Install the master cylinder mounting nuts.
Tighten
Tighten the nuts to 36 N·m (27 lb ft).
- For vehicles with JL4, remove the plug from the reservoir port and install the hose (4) and clamp (5) to the reservoir.
- Remove the crimping tool from the hose (4).
Remove the rubber cap or plug from the exposed brake pipe fitting ends.
- Connect the brake pipes.
Tighten
Tighten the pipe fittings to 25 N·m (18 lb ft).
- Connect the electrical connector to the brake fluid level sensor.
- Install the driver side upper fender support.
- Bleed the hydraulic brake system. Refer to
Hydraulic Brake System Bleeding
.
- Release the park brake and unblock the wheels.