Checking the operation of the brake booster (Kalina 1118)

When the brake booster fails, the force on the brake pedal increases significantly, which negatively affects vehicle control. If the force on the brake pedal when pressed has noticeably increased compared to normal pressing, check the brake booster with the vehicle stationary.

To check the operation of the brake booster on a car, you will need: a screwdriver, a rubber bulb.

1. With the car engine not running, press the brake pedal 5-6 times. Keeping the brake pedal depressed, start the engine. The brake pedal should move forward (fail). If this does not happen, check the tightness of the vacuum booster hose on the intake pipe fitting...



2. ...and on the check valve. If necessary, depending on the defect, tighten the vacuum booster hose clamp, replace the clamp or hose.



3. Remove the valve from the brake booster housing and from the vacuum hose.





4. Put it on the larger diameter nipple (which the valve is inserted into the vacuum booster) rubber bulb and squeeze it. At the same time...



5. ...air should escape through the valve. Let go of the pear. If it remains compressed, then the vacuum booster valve is working properly. Otherwise, replace the brake booster valve. If you don't have a bulb, you can blow out the vacuum booster valve with your mouth.