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Home >> Toyota >> 2020 >> RAV4 LE, AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Hydraulic) - Service Information (1 Of 2) >> BRAKE MASTER CYLINDER (w/ Vacuum Brake Booster) >> Removal [10/2019 - 08/2020] >> Procedure

Removal [10/2019 - 08/2020]: Procedure

  1. PRECAUTION 
    NOTE:

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

    Refer to PRECAUTION [11/2018 - ]

  2. REMOVE BATTERY 

    Refer to REMOVAL [10/2019 - 08/2020]

  3. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to REMOVAL [11/2018 - ]

  4. REMOVE COWL VENTILATOR PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 8

  5. DRAIN BRAKE FLUID 
    NOTE:

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

  6. REMOVE RESERVOIR BRACKET (w/ Stop And Start System) 
    1. Remove the bolt, nut and reservoir bracket.
      GTY874733Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE BRAKE MASTER CYLINDER SUB-ASSEMBLY 
    1. Disengage the clamp and disconnect the connector from the brake master cylinder reservoir assembly.
      GTY874732Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a union nut wrench, disconnect the 2 brake lines from the brake master cylinder sub-assembly.
      NOTE:
      • Do not damage or deform the brake lines.
      • Do not allow any foreign matter such as dirt or dust to enter the brake lines from the connecting parts.
      GTY874731Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 2 nuts and brake master cylinder sub-assembly from the brake booster assembly.
      GTY874730Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • The brake master cylinder sub-assembly requires careful handling. Do not drop or subject the brake master cylinder sub-assembly to any impact. Do not reuse a brake master cylinder sub-assembly that has been dropped.
      • Do not hold the brake master cylinder sub-assembly by the master cylinder piston. Hold the brake master cylinder sub-assembly by its body when carrying it.
      • Do not pull out the master cylinder piston.
      • Do not strike or pinch the master cylinder piston, or cause any damage to the master cylinder piston by any other means.
      • When installing the brake master cylinder sub-assembly to the brake booster assembly, or when removing the brake master cylinder sub-assembly from the brake booster assembly, make sure that the brake master cylinder sub-assembly is kept horizontal or with its tip facing downward (the master cylinder piston is facing upward) to prevent the master cylinder piston from falling out.
      • Do not allow any foreign matter to contaminate the master cylinder piston. If any foreign matter gets on the master cylinder piston, remove it by using a piece of new and dry cloth. Do not use water or detergent. Then apply an even layer of lithium soap base glycol grease around the circumference (sliding part) of the master cylinder piston.
      • Do not use any other types of grease.
      • Make sure to release vacuum from the brake booster assembly before removing the brake master cylinder sub-assembly from the brake booster assembly.
  8. REMOVE BRAKE MASTER CYLINDER O-RING 
    1. Remove the brake master cylinder O-ring from the brake master cylinder sub-assembly.
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