How to Remove & Install the Brake Booster in a 1987 Jaguar XJ6

The brake booster on a 1987 Jaguar XJ6 uses the vacuum from the engine to create extra pressure for the braking system. When the booster fails, the Jaguar will become difficult to drive and you face greater risk getting of into an accident. To solve the problem, the brake booster needs to be removed from the car and replaced with a new one. The job should take around 2 hours for experienced home mechanics.

Instructions

1

Open up the engine compartment on the Jaguar. Unbolt the master cylinder from the brake booster with an open-end wrench. Unplug the vacuum line on the booster with your hands. Remove the rubber plugs located on the sides of the pedal box just aft of the brake booster with your hands.

2

Insert the needle-nose pliers into the holes from the rubber plugs. Remove the clevis pin inside of the pedal box with the needle-nose pliers.

3

Unbolt the brake booster from the bracket on the pedal box with the 3/8-inch ratchet and socket. Pull the master cylinder off of the brake booster and put it carefully to the side, slightly flexing the hard brake lines in the process. Pull the brake booster off of the bracket and away from the car.

4

Navigate the replacement brake booster onto the bracket so that the booster linkage runs into the pedal box. Bolt the booster to the bracket with the 3/8-inch ratchet and socket.

5

Install the clevis pin into the brake booster linkage inside the pedal box with the needle-nose pliers. Push in the rubber plugs on the box. Bolt the master cylinder to the brake booster with an open-end wrench, and push the vacuum line onto the booster.