Brake Booster: Installation

WARNING: This page is about a different car, the 2011 Subaru Tribeca. However, it is still accessible from the selected car via links, so may be relevant.

Check and adjust the operating rod of the brake booster.
Specification L:

137.6 mm (5.42 in)

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

Fig 1: Identifying Brake Booster Operating Rod Length
Courtesy of SUBARU OF AMERICA, INC.
Mount the brake booster in position.
Connect the operating rod to brake pedal with clevis pin and snap pin.

Fig 2: Identifying Brake Booster Installation Nuts, Clevis Pin, Snap Pin And Operating Rod
Courtesy of SUBARU OF AMERICA, INC.
NOTE:
- Replace with a new clevis pin.
- Apply NIGTIGHT LYW NO. 2 grease to the clevis pin.
Connect the vacuum hose to the brake booster.
Mount the master cylinder onto the brake booster.
Connect the brake pipes to the master cylinder.
Connect the connector of the brake fluid level gauge.
Measure the clearance between the threaded end of the stop light switch and the stopper. If it is not within the specification, adjust it by adjusting the position of the stop light switch. Refer to ADJUSTMENT , Stop Light Switch.
CAUTION: Be careful not to rotate the stop light switch.

Stop light switch clearance A:

0.8 mm (0.031 in)

Fig 3: Identifying Stop Light Switch Clearance A
Courtesy of SUBARU OF AMERICA, INC.
Apply grease to the operating rod connecting pin to prevent it from wear.
Bleed air from brake system.
Tightening torque (air bleeder screw):

8 N.m (0.8 kgf-m, 5.8 ft-lb)
Perform a road test to make sure the brakes do not drag.