11:13. Replacement and check of the vacuum pump of the servo-driver of the brake amplifier (diesel models)


The vacuum pump creates the depression necessary for operation of the amplifier of brakes. The pump is installed on the generator and is given from its shaft.


  1. Weaken a tension of a V-shaped belt and remove it (see the Head Nastroyki and routine maintenance of the car).
  2. Disconnect a vacuum hose.

Hoses of the vacuum pump

  1. Disconnect an oil supply hose. Weaken a collar and disconnect a returnable hose of oil.
  2. Turn out screws of fastening of the vacuum pump and remove the pump with a sealing ring.

Screws of fastening of the vacuum pump

  1. Check a condition of a sealing ring of the vacuum pump and, if necessary, replace it.
  2. Installation is made as it should be, the return to an order of dismantle of components. Tighten fixture with the required effort. Use new consolidation of a hose of supply of oil.



  1. Check is made by means of the vacuum gage.
  2. Disconnect a vacuum tube from the pump and by means of a suitable piece of a hose attach the vacuum gage.
  3. Start the engine and let's it work on single turns, measure depth of the depression created by the pump, - about one minute later the device has to register the indication about 500 mm of mercury. Significantly the underestimated result testifies to a pump exit out of operation, - consult at specialists of car service. The faulty pump is not subject to recovery repair and is replaced assembled.