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Home >> Toyota >> 2021 >> 4Runner Limited, RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Hydraulic) - Service Information >> Brake Booster >> Installation [08/2015 - ] >> Procedure

Installation [08/2015 - ]: Procedure

  1. TEMPORARILY INSTALL BRAKE MASTER CYLINDER PUSH ROD CLEVIS 
    1. Install the lock nut and brake master cylinder push rod clevis to the brake booster assembly.

      HINT: 

      Tighten the lock nut after adjusting the brake pedal height.

  2. INSTALL BRAKE BOOSTER GASKET 
    1. Install a new brake booster gasket to the brake booster assembly.
  3. INSTALL BRAKE BOOSTER ASSEMBLY 
    1. Install the brake booster assembly to the body with the 4 nuts.

      Torque: 14 N.m (145 kgf/cm, 10 ft.lbf) 

      NOTE:

      Do not damage the brake lines.

  4. INSTALL CHECK VALVE GROMMET 
    1. Install a check valve grommet to the brake booster assembly.
  5. INSTALL BRAKE VACUUM CHECK VALVE ASSEMBLY 
    1. Install the vacuum check valve assembly to the brake booster assembly.
  6. CONNECT VACUUM HOSE 
    1. Connect the vacuum hose with the clip.
  7. INSTALL PUSH ROD PIN 

    See step  2

  8. INSTALL BRAKE PEDAL RETURN SPRING 
  9. INSTALL BRAKE MASTER CYLINDER SUB-ASSEMBLY 
    1. Install the brake master cylinder sub-assembly (See step  1).
  10. BLEED BRAKE SYSTEM 

    See step  2[08/2015 - 08/2019], or see step  2[08/2019 - ]

  11. CHECK AND ADJUST BRAKE PEDAL 
    1. Check and adjust the brake pedal (Refer to ADJUSTMENT [08/2015 - ] ).
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