REMOVAL & INSTALLATION
See Figures 1 through 8
- Disconnect the negative battery cable.
- Apply the brake pedal several times to exhaust all vacuum in the brake booster.
- Detach the brake warning lamp indicator wire connector.
- Disconnect the brake lines from the primary and secondary outlet ports of the master cylinder. Plug the brake lines.
- Remove the retaining nut for the HCU bracket and slide the bracket off of the master cylinder retaining stud .
- Remove 2 nuts retaining the master cylinder to the brake booster.
- Slide the master cylinder forward and upward from the vehicle.
- Install a new seal in the groove in the brake master cylinder mounting face.
- Bench bleed the new master cylinder.
- Mount the master cylinder on the booster. Tighten the nuts to 20-28 ft. lbs. (26-39 Nm).
- Position the HCU bracket on the brake master cylinder mounting stud and install the retaining nut.
- Unplug and connect the brake lines to the master cylinder and tighten to 12-14 ft. lbs. (16-20 Nm.
- Connect the brake warning light or fluid level indicator switch wire connector.
- Connect the negative battery cable.
- Fill the master cylinder reservoir.
- Bleed the system and check for leaks.
- Road test the vehicle and check the brake system for proper operation.
- Secure the master cylinder in a bench vise using soft jaws.
- Remove the master cylinder reservoir cap.
- Manufacture or purchase bleeding tubes and install them on the master cylinder as illustrated.
- Fill the master cylinder reservoir with clean, fresh brake fluid until the level is within 0.25 in. of the reservoir top.
Ensure the bleeding tubes are below the level of the brake fluid, otherwise air may get into the system making your bleeding efforts ineffective.
- Use a blunt tipped rod (a long socket extension works well) to slowly depress the master cylinder piston. Make sure the piston travels full its full stroke.
- As the piston is depressed, bubbles will come out of the bleeding tubes. Continue depressing and releasing the piston until all bubbles cease.
- Refill the master cylinder with fluid.
- Remove the bleeding tubes.
- Install the master cylinder reservoir cap.
- Install the master cylinder on the vehicle.