The master brake cylinder is designed to transfer force by compressing brake fluid to the caliper, which in turn compress the brake pads with disc brakes and unclench with the drum.

It is located under the hood of the car from the driver’s side bolted to the vacuum booster. On top is a brake fluid reservoir.

Failure of the master cylinder may be caused by wear of the rubber cuffs inside or leakage of fluid at the joints of the brake pipes or fluid reservoir. On cars Ssang Yong, it is designed for mileage of 200 thousand km.

 Replacing the brake master cylinder is as follows:

• 1. for convenience, we remove the battery;
• 2. the brake fluid is pumped out from the tank located on top with an ordinary medical syringe;
• 3. tubes are loosened to the side, but not fully unscrew;
• 4. unscrew the two bolts from the cover of the vacuum booster with which it is attached;
• 5. substitute the container under the side of the tube to the remaining liquid glass in it and unscrew the tube.

Brake master cylinder removed and ready for replacement. It is sold separately from the tank, which can not be changed, if it is in good condition, its body does not flow. When installing the tank on a new cylinder, you must take the repair kit and change the sealing rubber bands that are in the tank and cylinder joints.

After the tank is installed, the cylinder is put in the reverse order, attached in the reverse order to the cover of the vacuum booster, and two brake pipes are screwed on. The brake fluid is poured into the tank.

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It is mandatory to pump the brakes, starting with the first circuit and ending with the second.

The order of pumping:

• 1. front right wheel;
• 2. back left (they belong to the first contour);
• 3. front left;
• 4. rear right (second circuit).

The brake master cylinder on the SsangYong Actyon is collapsible. If desired, you can buy a repair kit for it, which consists of rubber cuffs and change them. This method is ineffective, possibly because of the quality of the rem kits.

It can be checked as follows. If visually there are no smudges on the case, on an idle engine without draining the brake fluid from the tank, unscrew the two bolts with which it is attached to the vacuum booster and move it away. The appearance at the junction of the brake fluid indicates that the cylinder is intact. He should not miss the liquid.

 Symptoms of failure may be:

• 1. a decrease in the level of brake fluid in the tank, although there are no visually leaks on the cylinder, brake pipes, or calipers;
• 2. the brake pedal when started the engine began to press gently or even fell into the floor;
• 3. little noticeable leakage in the places of fastening of the tank or tubes.

Monitoring the state of the brake system is mandatory. If one of the circuits of the main brake cylinder fails, the car will brake with a second, healthy one. Such braking will be inferior in efficiency twice.

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