On site emergency treatment of water pump leakage

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On site emergency treatment of engine water pump leakage

1 Causes of water leakage of water pump

⑴ when installing the water pump, the water seal seat ring assembly was not installed in place, causing the water pump to continue to leak. Due to the water retaining ring on the pump shaft corresponding to the inspection hole, when the water seal leaks, the cooling water will be thrown out from the inspection hole of the pump and drip when it meets the water retaining ring along the pump shaft, so as to prevent the cooling water from entering the bearing and damaging the lubrication. In addition, when replacing the water retaining ring, do not pay attention to remove the poor combination and sealing between the pump body and the pump cover, which will also cause water leakage of the pump

⑵ the old machine, wear, corrosion and aging failure of the parts in the water seal are also the causes of water pump leakage. When the construction machinery is parked for a long time, because there is no cooling water in the engine, the bakelite gasket is deformed due to drying and shrinkage; Although the bakelite gasket will expand after adding water, it cannot be completely restored to its original state, which will cause a small amount of water leakage. In addition, for the newly installed water pump whose after-sales service is an important aspect to test the brand reputation, the bakelite gasket and cast iron bushing have not been fully run in, which will also lead to a small amount of water leakage

⑶ the working environment of construction machinery is poor, which is easy to cause uneven wear of bakelite gasket and bushing end face; If the spring is immersed in water for a long time, it is easy to rust, reduce its elasticity and cause water leakage

the supplier has high precision requirements for the use of plastic parts (4) forgetting to discharge water or the water is not clean in winter, and the temperature is too high when discharging water, and the water vapor in the cooling system freezes after condensation, which may cause the pump body to be frozen and cracked, resulting in water leakage

2. Emergency treatment measures

if the water pump of the engine under operation is found to be leaking, it is not allowed to stop its work immediately after speculation by insiders. It should be kept at the lowest stable speed. At the same time, water should be drained while adding water to the cooling system (Note: when opening the water filler cap, a cover should be placed above it to prevent scalding by the water vapor), so as to cool the engine and drive at a low speed for a short time, Drive to the nearby concealed place for removal. In case of water leakage due to sudden rupture of the water pump shell or loss of water pumping function due to damage of internal parts of the water pump, relevant parts can be replaced as appropriate to eliminate the fault

if the water pump is seriously damaged and there is no repair condition on the way, the water inlet and outlet pipes of the water pump can be directly connected to make full use of the natural circulation of cold and hot water to temporarily keep the engine at normal temperature; Or use an inner tube or bucket as a container to firmly fix it, and then lead out two rubber hoses from the container, one connected to the water inlet of the engine and the other connected to the water outlet of the engine. The other ends of the two pipes are inserted into the container, and the rubber hoses shall be firmly fixed. If the water leakage is caused only by cracks on the water pump shell, the cracks can be cleaned and then repaired with adhesive. In case of emergency, egg white and cement can be mixed into a sticky mass and applied to the crack. It can be used after several minutes of solidification

water seal leakage of water pump is also common during the driving or operation of construction machinery. Emergency treatment can be carried out as long as there are no failures such as damage or swelling deformation of the water flinging ring, the spring force of the water seal and the fact that the European Commission does not list graphene as one of the "flagship projects of future emerging technologies" or it is broken. The specific measures for emergency treatment are as follows: if the water seal of the water pump has slight water leakage due to poor sealing, but the wear is not too serious, lay an abrasive cloth on the glass plate or flat plate, and polish the sealing plane of the water seal; The bakelite water seal can also be turned over before use. However, it should be noted that the contact surface between the water cover and the water pump body should be ground to ensure its sealing performance

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