OEM 2002 Jeep Liberty Brake Booster

2002 Jeep Liberty Brake Booster Parts and Q&A

• Q: How to Service and Repair a Brake Booster on 2002 Jeep Liberty?

  A: Begin by cutting off the wire from the fluid signal system at the bottom of the tank; afterwards, pull out the master cylinder. Then, separate the vacuum hose from the booster check valve and take both brake line connections from the master cylinder and the HCU. Take the HCU off its mounts and put it to one side to give room to the booster. After that, remove the blocker from the steering column and pull out the clip that holds the booster push rod to the brake pedal. With the nuts off, push the booster pins out of the panel in the engine compartment, tilt the booster upward and take it out. Connect and set the booster on the dash panel, then install the mounting screws firmly enough that the booster won't move. Ensure to lubricate the pedal pin and bushing before putting the booster push rod onto the brake pedal and connecting it with the retaining clip. Fasten the booster brackets down with 22.6 Nm (200 ft. lbs.) and put in the knee blocker. Should the original master cylinder be installed again, check the seal on the reverse side, replacing it if it is cut or torn. Soak a shop towel in brake cleaner and wipe the cylinder mounting surface of the brake booster to avoid vacuum leaks. Place the master cylinder on the booster studs, insert the mounting nuts and tighten them to 22.6 Nm (200 inch lbs.). Attach the vacuum hose to the booster check valve, mount the HCU again and tighten the two mounting nuts to 22.6 Nm (200 inch lbs.). Secure the brake lines using all materials, then, using your hands, start each fitting to prevent cross-threading. Afterward, attach the wire to the fluid level switch at the reservoir floor, complete the base brake system bleeding process and check the brakes' performance.