Brake Master Cylinder Inspection

Brake. Corolla. Zre142 Aze141
Brake System (Other). Corolla. Zre142 Aze141

  1. INSPECT AND ADJUST BRAKE BOOSTER PUSH ROD

Brake Master Cylinder -- Inspection



1. INSPECT AND ADJUST BRAKE BOOSTER PUSH ROD
NOTICE:
Make an adjustment with no vacuum in the brake booster assembly. (Depress the brake pedal several times with the engine stopped.)
HINT:
  1. Adjustment of the brake booster push rod is required when the brake master cylinder sub-assembly is replaced with a new one.
  1. Adjustment is not necessary when the removed brake master cylinder sub-assembly is reused and the brake booster assembly is replaced with a new one.

  1. Apply chalk to the tip of the accessory tool.

    HINT:
    An accessory tool is enclosed with a new brake master cylinder sub-assembly.


    Corolla. Zre142 Aze141.Brake System (Other).Brake System.Brake Master Cylinder Inspection

  1. Place the accessory tool on the brake booster assembly.

  1. Measure the clearance between the brake booster push rod and accessory tool.

    Standard clearance:
    0 mm (0 in.)
    HINT:
    Adjust the clearance in the following cases:
    1. If there is a clearance between the accessory tool and the shell of the brake booster (floating accessory tool), the push rod is protruding too far.
    2. If the chalk does not stick on the tip of the brake booster push rod, the push rod protrusion is insufficient.


    Corolla. Zre142 Aze141.Brake System (Other).Brake System.Brake Master Cylinder Inspection

  1. If the clearance is not as specified, adjust the push rod length by holding the rod using SST and turning the tip of the rod using a socket driver (7 mm).

    SST
    09737-00020
    HINT:
    Check the push rod clearance again after adjustment.