Reasons for the Overheating of the Tractor Engine and Solutions
The fan belt is too loose The belt is too loose, which will cause the fan and the pump not to rotate fast enough. Too loose or too tight a belt will accelerate the wear of the belt and accelerate the wear of the bearing. Too loose a belt will also reduce the cooling power of the cooling water and cause the engine to overheat. Should be in accordance with the requirements of the instructions, hand-moving fan or pull the middle of the belt, check the tightness of the fan belt, the tightness is not correct, should be adjusted. If two of the fan belts are damaged, they should be replaced as much as possible. Two tight ones should accelerate the wear of the belts and bearings.
The amount of cooling water in the water tank is insufficient, and the temperature of the cooling water rises sharply, causing the engine to overheat. At this time, the engine should be immediately shut down. After cooling for a period of time, add cooling water and check for leaks. If any, tap the leak-prevention measures immediately for repair.
Under long-term overload operation of the engine, the fuel emits more heat, but the engine speed is low, and the cooling effect is poor, so the cooling water warms up quickly, causing the engine to overheat. In this case, you should think of ways to reduce the load on the locomotive and work on the downshift to solve the engine overload problem.
If the engine oil supply advance angle is too small, the combustion will be performed under a large cylinder volume, and the amount of heat dissipated to the cooling water will increase the temperature quickly, causing the engine to overheat. At this time, the engine often smokes black smoke, and the exhaust pipe may ignite fire, especially at night. This is mainly due to wear of the plunger pair wear, timing gears, cams, etc., or installation errors, which can cause changes in the advance angle of the fuel supply. At this time, it is necessary to recheck the adjustment of the oil supply time and replace worn parts.
The wear of the impeller face of the pump will cause the pump capacity to drop, or the pump impeller will not rotate, and the cooling water will not be circulated to cool, so that the temperature will increase rapidly and the engine will overheat. At this point, the pump should be fully inspected, and new or new products should be repaired depending on the degree of damage to the impeller, shaft or housing.
In addition, the use of hard water that has not been softened for a long time will increase the scale in the water jacket and the radiator, as well as block the radiator water pipes, causing cooling water to cool and poor heat dissipation, and causing the engine to overheat. The solution is to wash the radiator with clean water and compressed air, and then add 10 kg of water, 0.75 kg of caustic soda and 0.25 kg of detergent to the tank, work for one shift, turn off the engine, replace it with clear water, and let the engine Run at medium speed, rinse with water 2-3 times.
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