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Home >> Subaru >> 2009 >> Forester X, Automatic >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System - Brakes - Mechanical >> Brake Booster >> Installation

Brake Booster: Installation

  1. Check and adjust the operating rod of the brake booster.

    Specification L: 

    136.3 mm (5.37 in) 

    If it is out of specification, adjust it with the brake booster operating rod.

    Fig 1: Identifying Operating Rod Length
    G05957193Courtesy of SUBARU OF AMERICA, INC.
  2. Mount the brake booster in position.
  3. Install clevis pin and snap pin which secure the operating rod to the brake pedal.
    Fig 2: Identifying Nut, Clevis Pin, Snap Pin, Operating Rod And Brake Pad
    G05957194Courtesy of SUBARU OF AMERICA, INC.
    NOTE: Apply a thin coat of KOPR-KOTE (Part No. 003603001) to the clevis pin.
  4. Connect the vacuum hose to the brake booster.
  5. After replacing the O-ring, install the master cylinder to brake booster.
    Fig 3: Identifying Primary Piston And O-Ring
    G05957195Courtesy of SUBARU OF AMERICA, INC.
  6. Connect the brake pipes to the master cylinder.
  7. Connect the connector of the brake fluid level gauge.
  8. Apply grease to the operating rod connecting pin to prevent it from wear.
  9. Bleed air from brake system.

    Tightening torque (air bleeder screw): 

    8 N.m (0.8 kgf-m, 5.8 ft-lb) 

  10. Perform a road test to make sure the brakes do not drag.
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