NOTE: The nuts that secure the brake pipes are usually very tight, and when you try to loosen them with a regular wrench, the edges of the nuts are crushed. Therefore, we recommend using special wrenches for brake pipes.
1. Disconnect the wire from the negative terminal of the battery.
2. Remove the decorative engine cover (see Removing and installing the decorative engine cover).
3. Remove the battery (see Removing and installing the battery)…
4….and its mounting shelf together with the intake noise muffler (see Removing and installing the battery mounting shelf).
5. Use a screwdriver to pry up the vacuum hose check valve…
6….and remove it from the hole of the sealing bushing of the brake booster.
7. Disconnect the brake master cylinder from the brake booster by unscrewing the two nuts securing it to the booster (see Replacing the master brake cylinder), and move it to the side without disconnecting the lines and wiring harness of the brake fluid level sensor.
8. In the car's interior, under the instrument panel, unscrew the four nuts securing the brake booster to the front shield.
NOTE: For clarity, the work is shown with the instrument panel and steering column bracket removed.
9. Use pliers to squeeze the two clamps of the brake booster push rod fork…
NOTE: Only one retainer is visible in the photo. The second retainer is located on the opposite side of the pin.
10….and remove the pin from the fork and pedal holes.
11. Remove the brake booster into the engine compartment by removing its studs from the holes in the front shield.
12. If replacing the vacuum booster, remove the sealing gasket from its mounting studs and install it on the new booster.
NOTE: Replace a gasket that is severely compressed or torn.
13. Install the brake booster and all removed parts in the reverse order of removal, fill with brake fluid and bleed air from the system (see Bleeding the hydraulic brake system).
NOTE: Be sure to replace the master cylinder flange sealing rubber ring with a new one.