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Brake Booster: Removal

CAUTION: If external force is applied from above when brake booster is placed in this position, the resin portion as indicated by "P", may be damaged.
Fig 1: Removing Brake Booster
G03751826Courtesy of SUBARU OF AMERICA, INC.
  1. Pull up parking brake lever, and block tires.
  2. Disconnect ground cable from battery.
  3. Remove or disconnect the following parts at engine compartment.
    1. Disconnect connector for brake fluid level indicator.
    2. Remove brake pipes from master cylinder.
    3. Remove master cylinder installing nuts.
    4. Disconnect vacuum hose from brake booster.
  4. Remove the following parts from the pedal bracket.
    1. Snap pin and clevis pin
    2. Four brake booster installing nuts
  5. Remove brake booster while shunning brake pipes.
    NOTE:
    • Be careful not to drop brake booster. Brake booster should be discarded if it has been dropped.
    • Use special care when handling operating rod.

      If excessive force is applied to operating rod, sufficient to cause a change in the angle in excess of +/-3°, it may result in damage to the power piston cylinder.

    • Use care when placing brake booster on the floor.
    • Do not change the push rod length. If it has been changed, reset the projected length "L" to the standard length.

    Standard: 

    L = 10 mm (0.39 in) 

    Fig 2: Identifying Push Rod Length
    G03751827Courtesy of SUBARU OF AMERICA, INC.
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