The engine can not be easily dismantled

Category:Automobile engine repair - Date:2017-11-01

People are in Car there are some misunderstandings in the use and maintenance, which have been formed in the years of low automobile manufacturing level, backward repair means and lack of testing means. These misunderstandings sometimes seem to be correct, but in fact, it is very harmless, which will cause the vehicle to be damaged and the personal safety is threatened, and the greater may be the hidden danger of the accident, or the decline of vehicle performance, the accelerated wear and tear, the shortened life span and so on.

1 and blind disassembly of the engine thermostat

if the thermostat is dismantled blindly because of the high temperature of the engine, the coolant can only carry on the large circulation, and the cooling strength can not be adjusted. It is difficult to ensure that the engine works at a more suitable temperature. Instead, the engine often works at low temperature, causing the engine power to decline, wear faster and increase the fuel consumption. If the engine thermostat is troubleshooting or replaced, the engine temperature is still high, the other parts of the cooling system should be overhauled and the thermostat should not be removed.

2, the temperature of the engine is not afraid of the low and the low

some people think that when the engine is running, the temperature of the engine is not high. In fact, when the engine temperature is low, the danger is also great. The service life of the engine must be ensured according to the normal temperature required by the vehicle manual.

3, the tighter the better the pump fan belt, the better the better

The tighter the belt is, the better. The tightness of the belt will not only lengthen or break the belt, shorten the life of the belt, but also cause the deformation and bending of the shaft of the generator and the shaft of the pump and the early damage of the bearing because of the excessive tension. The tightness of the automobile engine fan belt should meet the technical requirements. When the normal belt is assembled, the deflection is 10-15mm.

4, engine at idle temperature

When the speed is low, the oil pump can not press the lubricating oil into all the lubricating surfaces quickly, and the oil pressure is low, so that the engine parts work under dry friction or semi dry friction; the fuel oil is bad at low temperature and makes the unburned fuel into the crankcase, and the oil film on the cylinder wall will be washed away, and the oil film will be washed away. Speed up the wear of the machine. Therefore, after a few seconds of engine startup, fast idle heating is applied to improve the lubrication condition of the engine.

5, bake oil bottom with a spray lamp

to bake oil bottom with a spray lamp in winter not only will make chemical changes in the additives in the oil, but also lose the original performance, but also make the oil cemented and the oil bottom deformed and easily cause the fire. The best way is to choose suitable oil according to the local minimum temperature in winter. Where conditions permit, vehicles should be parked in the garage with thermal insulation facilities.

the more advanced removal methods are ultrasonic cleaning and spray cleaning, but the most simple and simple method is physical clearance and chemical cleaning. These two methods can also be used concurrently.

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