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Home >> Subaru >> 2022 >> WRX Premium, Standard Trans >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Brake System >> Brake Booster >> Removal >> Electric Brake Booster Model

Electric Brake Booster Model

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, refer to "CAUTION" of "General Description" in "AIRBAG SYSTEM". Ref. to  AIRBAG SYSTEM>GENERAL DESCRIPTION>CAUTION  . 
  • Do not disassemble the electric booster assembly. 
  • Be careful not to drop the electric booster assembly. If the electric booster assembly is dropped accidentally, replace it. 
  • Place the removed electric booster assembly as shown in the figure below and be careful not to apply a force (a) from above. If a force (a) from above is applied, the internal mechanical part (b) may become damaged. 
G14385212Courtesy of SUBARU OF AMERICA, INC.
  1. Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
  2. Remove the intercooler. Ref. to INTAKE (INDUCTION) (H4DOTC)>INTERCOOLER>REMOVAL .
  3. Remove the engine control module (ECM). Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>ENGINE CONTROL MODULE (ECM)>REMOVAL .
  4. Pull up the lock lever (b) while pressing the lock button (a) and disconnect the connector.
    G14602262Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the harness clip from the bracket harness electric booster.
    G14602263Courtesy of SUBARU OF AMERICA, INC.
  6. Disconnect connectors.
    G14602264Courtesy of SUBARU OF AMERICA, INC.
  7. Remove the pipe assembly front ABS.
    1. Separate pipe assembly front ABS using a flare nut wrench.
    2. Release the pipe clamps, and remove the pipe assembly front ABS.
    G14602265Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the cover LWR driver. Ref. to EXTERIOR/INTERIOR TRIM>INSTRUMENT PANEL LOWER COVER>REMOVAL .
  9. Remove the knee airbag module. Ref. to AIRBAG SYSTEM>KNEE AIRBAG MODULE>REMOVAL .
  10. Remove the duct foot driver. Ref. to AIR CONDITIONER>AIR VENT DUCT>REMOVAL>FOOT DUCT .
  11. Remove the snap pin (a) and clevis pin (b), and remove the operating rod from the pedal COMPL brake.
    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. 
    G14602266Courtesy of SUBARU OF AMERICA, INC.
  12. Remove the nuts, and remove the electric booster assembly.
    G14602267Courtesy of SUBARU OF AMERICA, INC.
  13. Remove the master cylinder assembly from the electric booster assembly. Ref. to BRAKE>MASTER CYLINDER>REMOVAL>ELECTRIC BRAKE BOOSTER MODEL .
    NOTE:

    Perform this procedure only when required. 

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