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一台东方红—75拖拉机起动困难,即使着了火,但不到1分钟又熄火。观察此时排气管排烟少,说明是柴油供不上。我们检查油路均未发现问题,当用手压泵泵油时感到没压力,柴油细滤器里空气排不净,于是怀疑回油阀弹簧折断或有异物,经拆检,结果是因回油阀座磨损而起不到密封作用所致。 另一台东方红—75拖拉机,经常因柴油过滤器进气而自动熄火。我们检查低压油路各油管接头,没发现损坏和漏油漏气现象;油箱来油
A Dongfanghong -75 tractor difficult to start, even with the fire, but less than 1 minute and turn off. At this point to observe the smoke exhaust pipe, indicating that diesel is not available. We check the oil were found no problem, when hand pump oil pump feel no pressure, diesel fine filter air row is not net, so I suspect back to the valve spring break or foreign body, the demolition seized, the result is due to back to the oil Seat wear and tear can not play the role of seal. Another Dongfanghong -75 tractor, often due to the diesel filter into the air and turn off automatically. We check the low-pressure oil pipe fittings, did not find damage and leakage leakage phenomenon; tank to the oil