The power brake booster requires no special maintenance apart from periodic inspection of the vacuum hose, lines, and air filter between the intake manifold and the booster unit. Disassembly necessitates special tools, and if a problem arises, a new or rebuilt unit should be obtained. To remove the booster, first take off the master cylinder mounting nuts from the booster assembly and, if possible, push the master cylinder aside for better access. Disconnect the vacuum hose leading to the front of the booster and cover the end of the hose. Loosen the four nuts securing the booster to the firewall without removing them yet. Inside the vehicle, disconnect the power brake pushrod from the brake pedal without forcing it to the side. After removing the four booster mounting nuts, carefully lift the unit out. For installation, loosely install the four mounting nuts, connect the pushrod to the brake pedal, tighten the nuts to the specified torque, and reconnect the vacuum hose and master cylinder. If the hydraulic
Brake Lines were disconnected, the entire brake system should be bled to eliminate any air. The power brake vacuum filter, tube, and hose assembly is located in the engine compartment, starting at the intake manifold and connecting to the power brake booster assembly through a hose routed inside the center console. Inspect the hose for cracks, and if damaged, remove and discard it, replacing it with a new one. The filter, found on the forward firewall of the engine compartment, should be replaced if it appears dirty.