Brake Master Cylinder (For Hatchback) Removal

Brake. Yaris. Ncp93, 131
Brake System (Other). Yaris. Ncp93, 131

  1. REMOVE CENTER COWL TOP VENTILATOR LOUVER

  2. DRAIN BRAKE FLUID

  3. REMOVE BATTERY

  4. REMOVE BATTERY TRAY

  5. REMOVE BATTERY CARRIER

  6. SEPARATE CLUTCH RESERVOIR TUBE (for Manual Transaxle)

  7. REMOVE BRAKE MASTER CYLINDER SUB-ASSEMBLY (w/o VSC)

  8. REMOVE BRAKE MASTER CYLINDER SUB-ASSEMBLY (w/ VSC)

Brake Master Cylinder (For Hatchback) -- Removal


NOTICE:
Release the vacuum from booster by depressing the brake pedal several times.
Then remove the brake master cylinder from brake booster.


1. REMOVE CENTER COWL TOP VENTILATOR LOUVER


Yaris. Ncp93, 131

  1. Disengage the 2 clips and slide the hood to cowl top seal as shown in the illustration.



    Yaris. Ncp93, 131

  1. Disengage the 2 claws and separate the washer hose joint.

    NOTICE:
    To prevent washer fluid from contaminating the brake master cylinder reservoir, do not separate the washer hose.

  1. Disengage the 2 claws and 6 guides remove the cowl top ventilator louver center.



2. DRAIN BRAKE FLUID
NOTICE:
Immediately wash off any brake fluid that comes into contact with any painted surfaces.


3. REMOVE BATTERY


    Yaris. Ncp93, 131

  1. Disconnect the cable from the battery terminal.

  1. Loosen the 2 nuts and remove the battery clamp.

  1. Remove the battery.



4. REMOVE BATTERY TRAY


5. REMOVE BATTERY CARRIER


    Yaris. Ncp93, 131

  1. Disengage the 6 clamps and disconnect the wire harness from the battery carrier.

  1. Remove the 5 bolts and the battery carrier.



6. SEPARATE CLUTCH RESERVOIR TUBE (for Manual Transaxle)


    Yaris. Ncp93, 131

  1. Slide the clip and disconnect the clutch reservoir tube.



7. REMOVE BRAKE MASTER CYLINDER SUB-ASSEMBLY (w/o VSC)
NOTICE:
  1. The master cylinder requires careful handling. Do not allow the master cylinder to receive any impact, such as from being dropped. Do not reuse a master cylinder that has been dropped.
  2. Do not strike or pinch the master cylinder piston, and do not cause any damage to the master cylinder piston by any other means.
  3. Release the vacuum from booster by depressing the brake pedal several times. Then remove the brake master cylinder from brake booster.
  4. When installing the brake master cylinder sub-assembly onto the brake booster, or when removing the brake master cylinder sub-assembly from the brake booster, make sure that the brake master cylinder sub-assembly is kept horizontal or its tip faces downward (the piston faces upward) to prevent the master cylinder piston from falling off.
  5. Do not allow any foreign objects to contaminate the master cylinder piston. If a foreign object gets on the piston, remove it by using a piece of cloth and then apply an even layer of lithium soap based glycol grease around the circumference (sliding part) of the piston.
  6. Do not use any other type of grease or fluid.

  1. Disconnect the brake fluid level warning switch connector.



    Yaris. Ncp93, 131

  1. Using a union nut wrench 10 mm, separate the 2 brake tubes from the brake master cylinder sub-assembly.



    Yaris. Ncp93, 131

  1. Remove the 2 nuts and the brake master cylinder sub-assembly.

  1. Remove the O-ring from the brake master cylinder sub-assembly.



8. REMOVE BRAKE MASTER CYLINDER SUB-ASSEMBLY (w/ VSC)
NOTICE:
  1. The master cylinder requires careful handling. Do not allow the master cylinder to receive any impact, such as from being dropped. Do not reuse a master cylinder that has been dropped.
  2. Do not strike or pinch the master cylinder piston, and do not cause any damage to the master cylinder piston by any other means.
  3. Release the vacuum from booster by depressing the brake pedal several times. Then remove the brake master cylinder from brake booster.
  4. When installing the brake master cylinder sub-assembly onto the brake booster, or when removing the brake master cylinder sub-assembly from the brake booster, make sure that the brake master cylinder sub-assembly is kept horizontal or its tip faces downward (the piston faces upward) to prevent the master cylinder piston from falling off.
  5. Do not allow any foreign objects to contaminate the master cylinder piston. If a foreign object gets on the piston, remove it by using a piece of cloth and then apply an even layer of lithium soap based glycol grease around the circumference (sliding part) of the piston.
  6. Do not use any other type of grease or fluid.

  1. Disconnect the brake fluid level warning switch connector.



    Yaris. Ncp93, 131

  1. Using a union nut wrench 12 mm, separate the 2 brake tubes from the brake master cylinder sub-assembly.



    Yaris. Ncp93, 131

  1. Remove the 2 nuts and the brake master cylinder sub-assembly.

  1. Remove the O-ring from the brake master cylinder sub-assembly.