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Brake Booster: Removal

WARNING: This page is about a different car, the 2015 Subaru Outback and 2015 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.
  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.
    Fig 1: Locating Clutch Bracket Bolts And Nuts
    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 And Harness 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.
    Fig 3: Removing Snap And Clevis Pins
    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: Applying External Force On 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
      G07915668Courtesy of SUBARU OF AMERICA, INC.
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