First, the engine temperature is too high
1. cooling system leaks or insufficient cooling water
2. the water temperature indicator indicates no indication or malfunction
3., cooling system scale is too much, poor heat dissipation
4. Baotou North rushes the spare parts radiator, the shield net or the radiator core air passage is blocked by the sundries, causes the heat dissipation to be bad
5. pump, fan belt loose or broken
6. damage of water pump, fan blade fitted or deformation, wind damage.
7. Baotou North running fittings thermostat damaged in the main valve closed position
8., Baotou North running spare parts engine, long-term overload operation and oil supply time is too late
Two, the engine temperature is too high method of elimination
When the engine is in operation, the water temperature is too high, it should pay attention to observe the fault phenomenon, find out the reason, be excluded. We should first check whether the failure of water table, or if no failure should be replaced; then check whether water tank, water inlet pipe, the radiator is broken Water Leakage, in addition to the direct observation from the outside, the method could also be used to check up Water Leakage site. Radiator parts available Water Leakage soldering repair, such as a radiator pipe rupture is heavy, the two clamping block. It is found that there is a slight leak in the work. It can be stopped up with soap and repaired after parking. For these reasons, the engine housing should be further examined whether there are cracks, water damage, check the pump drain hole is Water Leakage. Finally check that the exhaust valve of the radiator cap is out of order, such as the missing effect.
If it is not for cooling water to leak, there should be two cases to analyze and remove the fault. 1. sudden high water temperature. First check the radiator is overheated, if the radiator temperature is too high, indicating that the cylinder gasket bad, at this time pay attention to check the body plane and cylinder head joint surface whether serious warping deformation, if deformation should be repaired in time. If the radiator temperature is not high, it shows that the cooling water circulation is bad, should check whether the fan belt broken or serious skid. If normal, check whether the radiator outlet is deflated, bore no delamination blockage, find out the reason to be excluded, emergency way is in flat suction tube on a suitably large spring support. Check that the expansion cylinder of the thermostat is broken and that the rupture should be replaced. If the thermostat is normal, then the water pump is damaged and the pump should be carefully checked and repaired. 2. non sudden water temperature is too high. For the sudden occurrence of excessive temperature, the engine speed should be increased to see if the water inlet is turned over, and to pay attention to whether a large amount or a small amount of water is turned over. If a large number of water, and the temperature of the radiator is not uniform, then some cooling pipe blocked, in the winter should pay attention to. When the water inlet is turned a little and the engine temperature is low and high, the pipe is damaged or blocked and should be replaced in time. If not for these reasons, it is possible that the cooling system is too thick and the waterways are sluggish. If the water inlet does not turn water, then the cooling system surface and engine mechanical parts shall be carefully checked and analyzed.
First of all, check whether the shutter is closed or not open enough, fan rotation is normal, if everything is normal, and the engine is still overheating, you should check the fan volume. If the wind is not enough, adjust the angle of the fan blade and bend the blade properly or change the fan blade.
In the normal cooling system, the engine is still overheating, should consider the use of reasons. In short, the engine overheating reasons are manifold, according to specific circumstances, flexibility in the use of the above methods for inspection and removal.