FixVault
Home › Subaru › 2015 › WRX Base › Repair and Diagnosis › External Pages › Different car › Section 129 (Brake System) › Brake Booster › Removal

Brake Booster: Removal

WARNING: This page is about a different car, the 2016 Subaru Outback and 2016 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
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.
  • Before handling the airbag system components, always refer to "CAUTION" of "General Description" in "AIRBAG SYSTEM". < Ref. to CAUTION , General Description. >
  1. Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. < Ref. to BATTERY , NOTE, Repair Contents. >
  2. Remove the vacuum hose.
  3. Remove the master cylinder assembly. < Ref. to REMOVAL , Master Cylinder. >
  4. Remove the bolts and nuts, and then remove the clutch bracket. (MT model)
    Fig 1: Locating Clutch Bracket Bolts And Nuts (MT Model)
    G10276711Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the ECM and ECM bracket.
    • H4 model: < Ref. to REMOVAL , Engine Control Module (ECM). >
    • H6 model: < Ref. to REMOVAL , Engine Control Module (ECM). >
  6. 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 2: Identifying Starter Connector, Harness Clip, Brake Pipe Assembly And Pipe Clip
      G10276712Courtesy of SUBARU OF AMERICA, INC.
  7. Remove the cover assembly - instrument panel LWR driver. < Ref. to REMOVAL , Instrument Panel Lower Cover. >
  8. Remove the panel - knee guard. < Ref. to REMOVAL , Steering Column. >
  9. Remove the column assembly - steering. < Ref. to REMOVAL , Steering Column. >
  10. 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.
    • Do not reuse clevis pins. Always replace with a new part.
    Fig 3: Removing Snap Pin And Clevis Pin
    G10276713Courtesy of SUBARU OF AMERICA, INC.
  11. 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 4: Removing Vacuum Booster Assembly
    G08314853Courtesy of SUBARU OF AMERICA, INC.
    1. Remove the nuts, and then remove the vacuum booster assembly.
      Fig 5: Removing Vacuum Booster Assembly With Nuts
      G07915668Courtesy of SUBARU OF AMERICA, INC.
About FixVault