Brake Booster: Removal

Remove or disconnect the following parts at the engine compartment:
- Disconnect the connector for brake fluid level indicator.
- Remove brake pipes from the master cylinder.
- Remove the master cylinder installing nuts.
- Disconnect vacuum hose from the brake booster.
Remove the following parts from the pedal bracket:
- Remove snap pin and clevis pin. See Fig 1 .
- Remove four brake booster installing nuts.
  CAUTION: If external force is applied from above when brake booster is placed on its side, the resin portion may be damaged. See Fig 2 .
  
  NOTE: Be careful not to drop the brake booster. Brake booster should be discarded if it has been dropped. Use special care when handling the operating rod. If excessive force is applied to the operating rod, sufficient to cause a change in the angle in excess of 3 degrees, it may result in damage to the power piston cylinder.
  
  NOTE: Use care when placing the brake booster on the floor. Do not change the push rod length. If it has been changed, reset the projected length to the standard length. See Fig 3 . See PUSH ROD SPECIFICATIONS table.
Remove the brake booster while shunning brake pipes.

Fig 1: Connecting Operating Rod To Brake Pedal

Courtesy of SUBARU OF AMERICA, INC.

Fig 2: Identifying Possible Resin Damage Cause

Courtesy of SUBARU OF AMERICA, INC.

Fig 3: Measuring Power Booster Push Rod Length

Courtesy of SUBARU OF AMERICA, INC.

BRAKE BOOSTER SPECIFICATIONS

Application	In. (mm)
Push Rod	0.396 (10.05)
Operating Rod	5.69 (144.6)