Checks and Adjustments

Check the brake system

First, check braking at low vehicle speed.

If on the road you will see the same long tracks left by the tires during braking, so the brakes are working simultaneously. This also applies to vehicles with anti-lock system as ABS does not work when the vehicle speed less than 5 km / h.

Perform the same test with the parking brake.

To check the brakes at higher speeds need to use the road with a flat surface.

When the vehicle speed of about 50 km / h, release the steering wheel, but hands should be ready to take over the steering wheel, brake and start slowly at first, and then sharply to a complete stop.

With strong pressure on the brake pedal should feel the pulsation when the system ABS, it is - a normal phenomenon.

When braking the car pulls to the left, then one of the right wheel brake is faulty. The car pulls to the side wheel brakes with strong performances.

Place the vehicle on a slope and rolled down it, make sure that all the wheels rotate easily.

After the test drive, do the following.

Check the temperature of the hand wheel. If one of the drives warmer others, it could be jammed caliper or permanently tightened parking brake.

On the raised car, check the wheel rotates with a great effort.

Checking and adjusting the brake pedal position

Turn the brake light switch as long as the gap between the outer shell of the brake switch lever and pedal reaches the desired value, switch lock nut.

The gap between the pedal and the brake light switch - 0.5-1.0 mm.

With the engine off, press several times on the brake pedal in order to remove any backlash in the system. Hand press the brake pedal before occurrence of notable resistance and measure a pedal free wheeling.

Free running of the brake pedal must be equal to 3-8 mm.

Start up the engine, depress the brake pedal with a force of 500 N (50 kg) and measure the distance between the brake pedal and the floor.

The distance should not be less than 75 mm, when the pedal is fully depressed, without the brake fluid - 35 mm.

Check the operation of the brake servo without instruments

Vacuum brake booster reduces the force applied to the brake pedal, thereby facilitating control of the vehicle. Failure of servo performance brake system is not broken, but the brake pedal must be pressed to make a much greater effort.

The principle of operation of the vacuum brake booster is based on the use of the vacuum in the intake manifold. Therefore, when the engine is no strengthening of the brakes. If the path of the engine suddenly stopped, you still have a reserve vacuum for a few short braking and then to press the brake pedal is necessary to make a much greater effort.

For easy verify that the brake servo, follow these steps.

1. Start the engine and let it run for 1-2 minutes, then stop it. Repeatedly press the brake pedal, applying normal force. If the pedal is pressed when you first moved to its lower position, but after the second or third pressing the pedal is gradually reduced, then the vacuum brake booster is working properly. Go to p. 2.

2. With the engine off, repeatedly press the brake pedal. Then press the brake pedal and start up the engine. If the brake pedal goes down a little bit, booster is defective. Go to p. Z.

3. With the engine running, press on the brake pedal, then stop the engine and hold the pedal down for 30 seconds. If the pedal height does not change, then the vacuum brake booster is OK. If the result of one of these three tests is not satisfactory, check the vacuum hose and the vacuum brake booster, make the necessary adjustments. If the results of the checks are normal, the brake servo is OK.

Checking for leaks and damage to the brake system

When checking the vehicle floor must be dry in order to make it easier to detect leaks place, as brake fluid penetrates under the layer of dirt. The dark damp places or dirty black color suggest a violation of integrity.

Check all fixtures and fitting, the brake calipers.

Brake hoses must not be wet, bulging, frayed. Otherwise, replace them.

Pipelines with traces of corrosion and the pinched piping must be replaced immediately.

Check whether all the brake calipers have protective caps bleeding nipples.

From time to time it is recommended to conduct their own inspection of the brake pressure follows.

With all the power, press the brake pedal.

Do not release the pedal a few minutes, while it should not fall further. If this happens, then the cuff on the master cylinder is faulty.

Because of leakage cuffs fluid level in the reservoir does not drop, and the pressurized fluid passes the piston in the master cylinder on the side where there is no pressure.

Leaky locations at the cuffs piston brake calipers can be identified by dark spots around the cuffs.

If you doubt the integrity of the system and are unable to determine the location of damage, contact a service station.

Check the brakes after washing the car

After washing the car Always test the brakes - Do a few test braking. Water trapped between the brake pads and discs, evaporate.

Often slowing down slightly in the last 100 m of travel, it is possible to remove moisture and salt from the brake discs and to increase the service life of the brake system. After riding in the rain or on roads treated with special cleaning agents, you must test the brakes before a long time to put the car into the garage.