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1. Check of serviceability of functioning of the vacuum amplifier of brakes is made from a driver's place.
2. At completely squeezed out pedal of a foot brake start the engine, - the pedal should fail a little more.
3. At the working engine several times squeeze out a pedal of a foot brake. The size of a course of a pedal should remain a constant.
4. Squeeze out a pedal, muffle the engine and continue to hold a pedal pressed during about 30 more seconds, during which it should not neither fail below, nor rise.
5. Again start the engine, let's to it work for about a minute, then again muffle. Again several times firmly squeeze out a pedal, - the size of a course should be reduced with each muscleman.
6. In case of negative result of the described check the servo-driver of the vacuum amplifier of brakes is subject to regenerative repair or replacement (see. Head Brake system). |
