1. With the engine off, press the brake pedal several times until the vacuum in the system disappears.
2. Press the pedal and start the engine.
3. If the amplifier is working perfectly, the pedal will noticeably move down.
4. To remove the brake booster, unscrew the nuts of the four bolts from the interior of the car after the master cylinder has been removed. The following preparatory work must be carried out to be able to access all the fasteners and remove the booster.
5. Remove the air filter and the control valve mounting bracket near the brake booster.
6. Release the brake pipes from the mounting clamps.
7. With the power steering installed, disconnect the pressure sensor plug and remove the power steering pump hose clamp.
8. The brake booster push rod is connected to the brake pedal inside the car. Also plug the vacuum hose to the intake manifold. The brake booster must be turned and tilted when removed, as the space is quite limited.
When installing a new brake booster, dimension "A" must be set to 125 mm by moving the push rod (1).
9. Install the brake booster in the reverse order of removal. If the same brake booster and master cylinder are installed, no adjustments are required. If one of the parts is replaced, the push rod in the passenger compartment must be adjusted. To do this, measure the distance from the surface of the booster mating (where the brake master cylinder is flanged) to the middle of the hole in the rod, as shown in the illustration. The size should be 125 mm. Otherwise, loosen the push rod lock nut and screw it in or out.
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