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Home >> Subaru >> 2021 >> Crosstrek Limited >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Brake System >> Brake Booster >> Removal >> Except For Hybrid Model

Except For Hybrid 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 performing service on the airbag module, always refer to "CAUTION" of "General Description" in "AIRBAG SYSTEM" information. Ref. to AIRBAG SYSTEM>GENERAL DESCRIPTION>CAUTION .
  1. Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. Ref. to REPAIR CONTENTS>REPAIR CONTENTS>NOTE>BATTERY .
  2. Lift up the vehicle, and then remove the front and rear wheels.
  3. Remove the vacuum hose. Ref. to BRAKE>BRAKE VACUUM PUMP>INSTALLATION>BRAKE VACUUM HOSE & PIPE .
  4. Remove the nuts, and then remove the clutch connector bracket. (MT model)
    G11255220Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the engine control module (ECM). Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO (EXCEPT FOR HEV))>ENGINE CONTROL MODULE (ECM)>REMOVAL .
  6. Remove the master cylinder assembly. Ref. to BRAKE>MASTER CYLINDER>REMOVAL .
  7. Remove the brake pipe assembly from the pipe clip.
    • Impreza model
    G11255221Courtesy of SUBARU OF AMERICA, INC.
    • Crosstrek model
    G12392703Courtesy 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. Ref. to AIRBAG SYSTEM>AIRBAG CONNECTOR>PROCEDURE>KNEE AIRBAG MODULE AND PASSENGER'S LAP SEAT BELT PRETENSIONER .
  10. Remove the universal joint assembly - steering. Ref. to POWER ASSISTED SYSTEM (POWER STEERING)>UNIVERSAL JOINT>REMOVAL .
    CAUTION: To prevent damage to the universal joint assembly - steering and improper steering effort, make sure to remove the universal joint assembly - steering.
  11. Remove the column assembly - steering. Ref. to POWER ASSISTED SYSTEM (POWER STEERING)>STEERING COLUMN>REMOVAL .
  12. Remove the duct - foot driver. Ref. to AIR CONDITIONER (EXCEPT FOR HEV)>HEATER DUCT>REMOVAL .
  13. 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.
    G11255222Courtesy of SUBARU OF AMERICA, INC.
  14. Disconnect the vacuum sensor connector.
    CAUTION:
    • Do not remove the vacuum sensor. If removed, replace the vacuum booster assembly with a new part.
    • Do not rotate the vacuum sensor when disconnecting the connector of vacuum sensor. Otherwise the grommet on the mounting location of the vacuum sensor may be damaged.
    • Impreza model
    G11255223Courtesy of SUBARU OF AMERICA, INC.
    • Crosstrek model
    G12392706Courtesy of SUBARU OF AMERICA, INC.
  15. 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.
G11255224Courtesy of SUBARU OF AMERICA, INC.
  1. Remove the nuts, and then remove the vacuum booster assembly.
G11255225Courtesy of SUBARU OF AMERICA, INC.
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