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Power Brake Booster

REMOVAL & INSTALLATION

NOTE: The booster can be rebuilt, although several special tools are necessary. Refer rebuilding to an outside repair facility.

  1. Remove the master cylinder as described earlier in this section.
  2. Disconnect the vacuum hose from the booster. On most late model cars, there is a check valve pressed into the vacuum hose that you will not be able to see. (On 626s and MX-6s with electronically controlled transaxles, and on 929s, the check valve is visible.) Before disconnecting the vacuum hose, note the direction of the arrow on the hose or on the valve. It should always be pointing toward the engine.
  3. From inside the car, disconnect the push rod fork from the brake pedal by removing the clevis pin. Unfasten the attaching nuts, then remove the booster and gasket.
  4. Install the brake booster with a new gasket and tighten the attaching nuts.
  5. Connect the brake pedal linkage to the push rod fork. Grease the clevis pin.
  6. Connect the vacuum hose in the proper direction and install the master cylinder. Bleed the system as described later in this section.

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