Attention! Due to the risk of damage to the seals of the engine vacuum system and the absence of the brake booster, make sure that all vacuum lines are connected correctly before starting the engine.
Due to the fact that the presence of a vacuum in the intake system is not sufficient for the reliable operation of the vacuum brake booster, a vacuum pump is provided on the car, which is driven directly from the engine.
Vacuum pump (1, fig. 5.173) mounted on the cylinder head 1-4, in front of the exhaust camshaft.
Attention! Before starting work on replacing the vacuum pump, it is necessary to relieve the vacuum in the brake booster, for which it is necessary to press the brake pedal several times.
Replacement of the vacuum pump must be carried out in the following order. Remove the decorative and soundproof engine cover. Remove suction hose with flow meter (flow meter) air and the top of the air filter.
Unclench the clamp (1, fig. 5.174) and disconnect the vacuum line.
Loosen the hose retainer nuts and disconnect the vacuum hose. You return the bolts, remove the vacuum pump holder and the pump itself.
When installing the pump, it is necessary to replace the sealing ring (1, fig. 5.175) and fix it with grease.
Expose mechanism (2) drive to its original position, while its protrusion on the pump must be in a vertical position. The pump drive spline on the shaft must also be in a vertical position. Set the spline position by turning the crankshaft at the central bolt.