10:25. Check of the vacuum pump on cars with diesel engines

Operability of the vacuum pump of the brake system can be checked, using the vacuum gage.

1. Disconnect a vacuum pipe from the pump and instead of it connect the vacuum gage.
2. Start the engine in the idling mode.
3. Measure the vacuum created by the pump. After 1 minute of operation of the engine vacuum has to make about 500 mm. hg. If the vacuum created by the pump does not correspond to the required data, replace the pump completely since spare parts to the pump are not delivered.