Check of functioning of the water pump
Refusal of the water pump can be at the bottom of the serious damages of the engine connected with its overheat.
There are some ways of check of functioning of the water pump without its removal from the engine. If the pump is faulty, it is necessary to replace it new or restored.
Water pumps are equipped control or ventilating by apertures. In case of failure of an epiploon of the pump from an aperture the cooler starts to exude. In most cases to find and examine a control aperture which is in the bottom part of the pump, the small lamp is required.
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At occurrence of malfunction of an epiploon of a shaft of the water pump from its control aperture the cooler starts to exude.
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If bearings of shaft of the water pump are faulty, they can publish howl, which will start with a forward part of an impellent compartment at engine work. Deterioration of a shaft is shown in the form of palpation upwards-downwards a pulley of the water pump. Do not confuse howl, published by bearings with the squeal which is taking place at проскальзывании drive of a belt.
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Grasp a pump flange try to shake its shaft upwards-downwards for revealing of its signs люфта.
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There is a probability of an exit of the pump out of operation when it is not accompanied by characteristic signs (howl also cooler infiltration through a control aperture). Corrosion of a back part of shovels of a rotor of the pump, leading on a certain stage of the development to inadmissible decrease in efficiency of functioning of the pump Sometimes takes place. Unique way to check up the such assumption is removal of the pump and careful research of its condition.
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