Brake Master Cylinder (For Sedan) Removal

Disconnect the cable from the battery terminal.

Loosen the nut and remove the battery clamp.

Remove the battery.

Separate the wire harness clamp from the battery carrier.

Remove the 5 bolts and remove the battery carrier.

Slide the clip and disconnect the reservoir tube.

Disconnect the brake fluid level warning switch connector.

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

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

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

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 the 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.
   

Disconnect the brake fluid level warning switch connector.

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

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

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

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 the 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.
   

Disconnect the brake fluid level warning switch connector.

Using a union nut wrench, separate the brake tubes from the brake tube way and brake master cylinder sub-assembly.

Remove the 2 nuts and brake tube way and remove the brake master cylinder sub-assembly.

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

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 the 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.