LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System >> Brake Booster >> Removal

Brake Booster: Removal

CAUTION:
  • Do not allow brake fluid to come in contact with the painted surface of the vehicle body. If it does, wash off with water and wipe away completely.
  • If the master cylinder assembly is removed, inspect the seal engagement surface of the seal sub assembly and the vacuum booster assembly.
  • If the sealing surface of the vacuum booster assembly has a defect such as flaking paint, damage or rust, it may cause negative pressure leakage. Therefore, replace the vacuum booster assembly with a new part.
  1. Disconnect the ground cable from battery and wait for at least 60 seconds before starting work. Ref. to NOTE>NOTE>BATTERY .
    NOTE: For model with battery sensor, disconnect the ground terminal from battery sensor.
  2. Drain brake fluid from the reservoir tank completely.
  3. Remove the intercooler. (Turbo model) Ref. to INTAKE (INDUCTION) (H4DOTC)>Intercooler>REMOVAL .
  4. Disconnect the air conditioner pipe. Ref. to HVAC SYSTEM (HEATER, VENTILATOR AND A/C)>Hose and Pipe>REMOVAL .
  5. Remove the power steering control module. Ref. to POWER ASSISTED SYSTEM (POWER STEERING)>Power Steering Control Module>REMOVAL .
  6. Remove the master cylinder assembly. Ref. to BRAKE>Master Cylinder>REMOVAL .
  7. Remove the brake pipe assembly (a).
    1. Disconnect the starter connector (b) and harness clip (c).
    2. Remove the brake pipe assembly (a) from the pipe clip (d).
      Fig 1: Exploded View Of Brake Booster
      G08314848Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the cover assembly - instrument panel LWR driver. Ref. to EXTERIOR/INTERIOR TRIM>Instrument Panel Lower Cover>REMOVAL .
  9. Remove the knee airbag module. (Model with knee airbag) Ref. to AIRBAG SYSTEM>Knee Airbag Module>REMOVAL .
  10. Remove the universal joint assembly - steering. Ref. to POWER ASSISTED SYSTEM (POWER STEERING)>Universal Joint>REMOVAL .
  11. Remove the column assembly - steering. Ref. to POWER ASSISTED SYSTEM (POWER STEERING)>Steering Column>REMOVAL .
  12. Remove the snap pin (a) and clevis pin (b), and remove the operating rod from the brake pedal.
    CAUTION:
    • Be careful not to apply excessive force to the operating rod when handling the operating rod. The angle may change by ±3°, and it may result in damage to power piston cylinder.
    • Do not change the push rod length.
    Fig 2: Removing Snap Pin And Clevis Pin
    G07915667Courtesy of SUBARU OF AMERICA, INC.
  13. Remove the vacuum booster assembly. 
    CAUTION:
    • Do not disassemble the vacuum booster assembly.
    • Make sure that the booster shell and vacuum pipe are not subject to strong impacts.
    • Be careful not to drop the vacuum booster assembly. If the vacuum booster assembly is dropped accidentally, replace it.
    • Be careful when placing the vacuum booster assembly on floor.
    • If external force (a) is applied from above when the vacuum booster assembly is placed in this position, the resin portion as indicated by "P" may become damaged.
Fig 3: Removing Vacuum Booster Assembly
G08314853Courtesy of SUBARU OF AMERICA, INC.
  1. Remove the nuts, and then remove the vacuum booster assembly.
Fig 4: Locating Vacuum Booster Assembly Nuts
G07915668Courtesy of SUBARU OF AMERICA, INC.
scientia non olet · About LEMON Manuals