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Home >> Toyota >> 2022 >> Avalon XLE >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Hydraulic) (Service Information) >> BRAKE BOOSTER PUMP(for HV Model) >> Removal [08/2021 -] >> Procedure

Removal [08/2021 -]: Procedure

  1. PRECAUTION 
    NOTE:

    After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

    Refer to PRECAUTION [04/2018 -]

  2. PERFORM ACCUMULATOR PRESSURE ZERO DOWN 

    See step  2

  3. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY 

    Refer to REMOVAL [04/2018 -]

  4. REMOVE FRONT CENTER UPPER SUSPENSION BRACE SUB-ASSEMBLY 

    See step  4

  5. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 18

  6. DRAIN BRAKE FLUID 
    NOTE:

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

  7. DISCONNECT NO. 2 BRAKE ACTUATOR HOSE 
    1. Slide the clip and disconnect the No. 2 brake actuator hose from the No. 1 brake actuator tube.
      GTY745993Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. DISCONNECT ACCUMULATOR TO BRAKE MASTER CYLINDER TUBE 
    1. Using a union nut wrench, disconnect the accumulator to brake master cylinder tube from the brake booster pump assembly.
      GTY745980Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not kink or damage the accumulator to brake master cylinder tube.
      • Do not allow any foreign matter such as dirt or dust to enter the accumulator to brake master cylinder tube from the connecting parts.
  9. REMOVE BRAKE BOOSTER PUMP ASSEMBLY 
    1. Release the lock lever and disconnect the connector from the brake booster pump assembly as shown in the illustration.
      GTY748376Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Release the lock lever
      Disconnect the connector
      NOTE:

      Be careful not to allow any brake fluid to enter the connector.

    2. Disengage the claw and clamp to separate the brake booster pump assembly wire harness from the brake actuator bracket assembly.
      GTY745982Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the nut from the brake booster pump assembly.
      GTY757471Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the brake booster pump assembly, brake booster pump bushing and brake actuator case collar from the brake actuator bracket assembly as shown in the illustration.
      NOTE:
      • Do not apply excessive force to the brake lines.
      • Do not carry the brake booster pump assembly by the parts shown in the illustration.
      • Do not drop the brake booster pump assembly when carrying it.
      • Be careful not to allow brake fluid to enter the connector.
      GTY740885Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Union
      *b Connector
      *c Wire Harness
      *d Stud
      Remove in this Direction
    5. Remove the 2 brake booster pump collars and 2 brake booster pump bushings from the brake booster pump assembly.

      HINT: 

      Perform this procedure only when replacement of the brake booster pump collars or brake booster pump bushings is necessary.

      GTY754451Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. REMOVE NO. 2 BRAKE ACTUATOR HOSE 
    1. Slide the clip and remove the No. 2 brake actuator hose from the brake booster pump assembly.
      GTY745987Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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