This article mainly introduces the 2 part, one is the inspection and maintenance of the diesel thermostat, and the two is the maintenance of the diesel engine fan.
Inspection and replacement of a diesel engine's thermostat
Remove the thermostat from the diesel engine and put it in a container with hot water. Do not put the thermostat on the bottom and gradually increase the temperature. Measure the temperature of the valve when the valve opens with a thermometer, and then continue to heat the temperature. Check the temperature of the thermostat when the temperature is completely opened. The normal valve is opened at 68-72 degrees C and opened at 80~85 C. If first opened. When the temperature of the diesel engine is higher than the above value, the temperature of the diesel engine will be too high. In the cold and cold season, the temperature of the cooling water of the diesel engine can not be heated up quickly when the thermostat is in disorder.
Two diesel engine fan repair
Fan's common defects include blade and blade frame deformation, cracks, and blade loosening on the blade frame. The deformed blade and blade rack should be cold corrected; blade cracks can be repaired after repair and reprocessed to ensure that the blade is loosened on the blade frame and can be re riveted. The repaired fan should be checked as follows:
1 fan blade swing swing check. Deviation of each blade side of fan and other blades on the same side should not be greater than 1.5--2 mm.
2 after the repair or new assembly of the fan assembly and the fan pulley, the static balance should be checked. When inspecting, the fan is pushed by the hand to turn it and the fan can be stopped at any position. Otherwise, the blade tail metal can be worn away; the hole through the drills where the blade frame does not affect the strength; drilling on the fan pulley; on the non working face of the blade. Weld thin steel plates.
3 165F, 175F diesel engine cooling system of cooling system repair. The guide cover except the air vent, no cracks or other breakages. Guide cover is thin iron sheet stamping parts, after damage can be repaired by gas welding. No need to be repaired. The plastic fan inside the wheel must be intact. If there is any damage, it should be replaced in time. The air inlet and the cooling duct should be clear, and the surface of the heat sink should be clean.
The above is the "diesel engine cooling system maintenance" shared by the United States.
Nowadays, diesel engines commonly used are: Yuchai, Cummings and so on.
