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Home >> Toyota >> 2019 >> Sienna Limited, AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Hydraulic) (Service Information) >> Brake Booster >> Removal [12/2015 - 08/2016] >> Procedure

Removal [12/2015 - 08/2016]: Procedure

  1. REMOVE FRONT WIPER ARM HEAD CAP 

    Refer to PROCEDURE - Step 1

  2. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY LH 

    Refer to PROCEDURE - Step 2

  3. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY RH 

    Refer to PROCEDURE - Step 3

  4. REMOVE FRONT FENDER TO COWL SIDE SEAL LH 

    Refer to PROCEDURE - Step 4

  5. REMOVE FRONT FENDER TO COWL SIDE SEAL RH 

    Refer to PROCEDURE - Step 5

  6. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 6

  7. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to PROCEDURE - Step 7

  8. REMOVE COWL PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 10

  9. REMOVE AIR CLEANER INLET COVER ASSEMBLY SEAL 

    Refer to PROCEDURE - Step 25

  10. REMOVE AIR CLEANER AND HOSE 

    Refer to PROCEDURE - Step 7

  11. DRAIN BRAKE FLUID 
    NOTE:

    If brake fluid leaks onto any painted surface, immediately wash it off.

  12. DISCONNECT NO. 1 RESERVOIR TUBE 

    See step  5

  13. REMOVE BRAKE MASTER CYLINDER SUB-ASSEMBLY 

    See step  6

  14. DISCONNECT UNION TO CHECK VALVE HOSE 
    1. Slide the clip and disconnect the union to check valve hose.
      GTY299063Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. SEPARATE ENGINE ROOM MAIN WIRE 
    1. Disengage the 2 clamps.
      GTY299062Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Raise the lever while pushing the lock on the lever, and disconnect the ECM connector.
    3. Remove the 2 bolts and clamp and separate the engine room main wire.
      GTY299064Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. SEPARATE NO. 1 FRONT BRAKE TUBE ASSEMBLY 
    1. Disengage the clamp and separate the No. 1 front brake tube assembly.
      GTY306301Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Be careful not to damage the brake lines or clamps. If any parts are damaged, replace them with new ones.

  17. REMOVE KNEE AIRBAG ASSEMBLY 

    (Refer to REMOVAL [12/2015 - ] )

  18. REMOVE BRAKE MASTER CYLINDER PUSH ROD CLEVIS 
    1. Loosen the lock nut.
      GTY299068Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the clip and the push rod pin and separate the push rod clevis from the brake pedal support assembly.
    3. Remove the brake master cylinder push rod clevis and lock nut from the brake booster assembly.
  19. REMOVE BRAKE BOOSTER ASSEMBLY 
    1. Remove the 4 nuts and brake booster assembly.
      GTY299074Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Do not damage the brake lines.

  20. REMOVE BRAKE BOOSTER GASKET 
    1. Remove the brake booster gasket from the brake booster assembly.
      GTY299072Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. REMOVE BRAKE VACUUM CHECK VALVE ASSEMBLY 
    1. Remove the vacuum check valve assembly from the brake booster assembly.
  22. REMOVE CHECK VALVE GROMMET 
    1. Remove the check valve grommet from the brake booster assembly.
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