3.6. Check of operation of the water pump
Failure of the water pump can serve as the reason of serious damages of the engine as a result of its overheat.
There are two ways of check of operation of the water pump without its removal from the engine. If as a result of one of them the pump is found faulty, it is necessary to replace it with the new.
Water pumps are usually equipped with ventilating openings. In case of violation of tightness of an epiploon of the pump from this opening liquid will start to exude. In most cases, to find this opening from the bottom party of the pump for identification of signs of leak, you should use a small lamp.
To malfunction of bearings of the water pump usually points a scratch in a forward part of the engine during its work. A sign of wear of a shaft of the pump is pulley palpation up and down (at the removed driving belt). Do not mix a scratch published by the sliping driving belt, with a scratch being the sign of wear of bearings of the pump. Wear of bearings of the generator too can will serve as the reason of a creaking sound, but after removal of driving belts it is rather easy to define a difference.