Diesel engine as a power source of tractors, its performance is good or bad, directly affect the economic performance and power performance of the tractor. Maintenance points: 1. Check the tightening conditions of the diesel engine frame screws and each part of the connection. When the diesel engine is found to be unstable, pay particular attention to the fastening of the diesel engine mounting pad and the fixing bolts. 2. Cooling system: 1 Check the amount of cooling water, add clean rainwater and river water when it is insufficient. Attention point: The diesel engine hot car can not open the water tank cover directly to avoid the hot gas rushing out of the scald; the cooling water can not use the well water and the spring water; when the cooling water burns to overheat, it should wait for the diesel engine to cool down before adding the cooling water. 2 Check the tightness of the fan belt (preferably 10-15mm deflection with the thumb thumb). 3 Look for leaks in tanks, pumps, pipes, etc. 4 Remove the radiator surface mud and debris. 3, check the oil level and oil quality, add when insufficient, oil deterioration should be replaced. Points to note: 1 Check the oil level, stop the tractor, and wait five minutes after turning off to check. The oil level is generally maintained between the middle engraved line and the upper engraved line (ie, 1/2 or more). When the oil level is lower than the lower engraved line, it is strictly prohibited to start the diesel engine. Insufficient to add the same grade oil. 2 Check the oil pan, cover, etc. for leakage of inorganic oil. 3 When the hot car should check the quality of oil (the method is to use a dipstick to see the gum component on the finger, rub the viscosity, whether the water sample) 4, check after operation: 1 view smoke is normal. a, note that the normal exhaust smoke colorless or light gray; b, is not normal: blue smoke is caused by burning oil, black smoke is caused by incomplete combustion of diesel, pale white smoke, water is involved in the combustion Caused by the strong white smoke is caused by the non-combustion of diesel. 2 Hearing sound: The diesel engine must run smoothly without any abnormal noise. Note: a, diesel engine in the low-speed soft foot valve is normal, when you hear the sharp "å—’", "å—’" valve foot to explain the gap is too large, should be adjusted in time. b. There should be no boring spindle bearing and crisper connecting rods. c. When the hot car has a slight knocking sound in the middle and low speeds, it is normal. There is no knock on the cylinder to indicate that the fuel supply is too late. Large or still noticeable at high speeds may be premature oil supply or excessive piston-to-cylinder clearance. d. The exhaust pipe must not have any "shots" for firing. 3 The diesel engine must run smoothly. When the diesel engine trembles, the abnormal rotation speed must be corrected in time. 4 Test throttle to determine the working condition of the diesel engine. a. When the speed is accelerating slowly, the speed of the diesel engine should be able to rise evenly, and there should be no sensation of dullness and diesel shaking. b. When rapid acceleration, the speed of the diesel engine should be able to rise rapidly with a slight knocking sound, and the sound of the exhaust pipe is normal. 5 Attention to the working temperature of the diesel engine, overheating and overcooling are not conducive to the normal operation of the diesel engine. 6 Check the leakage of the diesel engine, oil spills and other conditions. 7 It is necessary to pay attention to whether the indicators of the instruments are normal, especially the oil gauge. 5, check the air filter and clean it in time.
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