Electric diaphragm pump engine temperature is too high How to solve:
　　
Electric diaphragm pump engine temperature is too high
　　
1, cooling system lack of water or cooling water;
　　
2, water temperature meter instructions are not allowed or malfunction;
　　
3, too much scale cooling system, cooling effect is poor;
　　
4, radiator shield or radiator core air duct blocked by debris, resulting in poor cooling;
　　
5, pumps, fan belt too loose or broken;
　　
6, the pump damage, fan blades installed anti-deformation or deformation, air ring damage;
　　
7, thermostat damage in the main valve closed position;
　　
8, long-term engine overload and fuel supply time is too late.
　　
Electric diaphragm pump engine temperature is too high exclusion
　　
When the engine appears in the work of water temperature is too high, should observe the phenomenon of failure, to find out the reasons to be ruled out. First, check whether the water temperature meter failure, if not allowed or failure should be replaced; and then check whether the water tank water, water pipes, radiator rupture leakage, in addition to direct observation from outside, but also to cheer method to check the leak site. Radiator leaks can be repaired with soldering, such as a heat pipe rupture heavier, two-head clamp can be blocked. Found a slight leakage of work, can be blocked with soap, to be repaired after parking.
　　
If not for the above reasons, should further check the engine casing for cracks, water stop ring is damaged, but also to check whether the pump drain hole leaks. Finally check the radiator cover exhaust valve failure, such as failure should be replaced.
　　
If the issue of non-cooling water leakage, the fault should be analyzed and excluded in two cases.
　　
1, suddenly the water temperature is too high. First check whether the radiator is overheated, if the radiator temperature is too high, indicating that the cylinder pad washed, check the body at this time the plane and the cylinder cover with serious warpage, if the deformation should be promptly repaired. If the radiator temperature is not high, then the cooling water circulation is bad, you should check the fan belt is broken or severe slippery. If normal, then check the radiator outlet tube is suction deflated, with or without delamination plugging, to find out the reasons to be ruled out, the emergency approach is to put in the deflated tube appropriate large spring support. Then check the thermostat expansion tube rupture, rupture should be replaced. If the thermostat is normal, then the diaphragm pump is damaged, you should carefully check and repair the pump.
　　
2, non-sudden water temperature is too high. For not suddenly the phenomenon of temperature is too high, you should increase the engine speed to observe the water inlet is turned over, while paying attention to a large number or a small amount of water. If a large number of water, and uneven radiator temperature, then some of the cooling pipe is blocked, should pay attention to the cold winter. When a small amount of water inlet nozzle and the engine temperature before and after the low, then the sub-pipe has been damaged or blocked, should be promptly replaced. If not for the above reasons, the cooling system may be excessive scale, poor waterway. If the water does not turn over the water, you should look at the cooling system and engine mechanical parts carefully analyzed. First of all, check whether the shutter is closed or the opening degree is less than the fan rotation is normal, if everything is normal, and the engine is still overheating, you should check the fan air flow. If the air volume is insufficient, the angle of the fan blades should be adjusted, and the blade blades should be properly bent or transformed. In the normal cooling system, the engine is still overheating, you should consider the use of the reasons.
　　
In short, the electric diaphragm pump engine overheating is due to many reasons, according to the specific circumstances of the flexible use of the above methods for inspection and exclusion.
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