Repair shop in the vehicle repair process found that part of the vehicle due to inadequate maintenance of the pump system, vehicle equipment, equipment and equipment on duty. The main reason for the failure of the pump is not water for a long time the pump idle and impeller dry grinding conditions, resulting in serious pump wear and tear, mechanical seal Vice damage, resulting in a long time off the vehicle and bring maintenance costs increase. One of the main types of mechanical seal damage is overheating damage, mechanical damage. Overheating damage refers to the pump idling for a long time, dry friction, the formation of high temperature and pressure pump, suddenly open the canister door, the water flow through a sudden cooling, easy to cause thermal cracking and deformation of the mechanical seal. Mechanical damage refers to the water does not pass through the filter, solid particles invade the sealing surface, so that the soft sealing surface wear and tear damage, and frequent opening and closing the pump caused by the relative movement of mechanical seal wear and tear. In order to save the maintenance cost and ensure the normal operation of the vehicle equipment, the repair shop shall draw up the maintenance of the pump from the maintenance point of view. First, water must be added to the water tank from the tank to prevent the solid gravel, stones, etc. Enter the water pump; Second, regular cleaning jugs, pumps, debris; Third, to strengthen pump operation skills training to avoid misuse. Fourth, daily to open and close the pump system section door, to avoid the door rust rust; Fifth, timely and timely to the pump, vacuum pump, throttle and other filling grease to avoid damage to the parts; pump running `` 3-6 hours later, Pump grease to the pump once. Sixth, the diversion time is less than 40 seconds; seven is the long-term use of the pump to open an additional cooling system to ensure that the engine, power take-off will not overheating damage. When using the cooling system, you need to open the inlet valve, close the bleed valve, and often check the power take-off pipe loop to see if there is leakage, to avoid power take-off oil dilution bearings.
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