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一台装配S195型柴油机的小四轮拖拉机,在更换了气缸套、活塞、活塞环后,烧机油严重,每班工作前按规定加足到上刻线,工作不到一个班次(约10小时),就消耗光了。开始怀疑所配新件有问题,经检查,各部位均符合标准;气门与气门导管、缸套、活塞环等间隙、边隙都符合要求。再次装上(未装气缸盖),摇车观察,发现活塞头部总是偏向飞轮一侧的气缸壁,另一侧则出现间隙。怀疑是连杆弯曲所致,将活塞连杆组从气缸套拉出后,翻转180°装回,摇车观察,情况同前,表明连杆没问题。卸掉三角皮带,发现原来
A small four-wheel tractor equipped with an S195 diesel engine burned oil after replacing the cylinder liner, piston and piston rings. Before each shift of work, the four-wheel tractor provided sufficient amount of engraving for less than one shift (about 10 hours ), It consumes light. Began to suspect the new parts with problems, after inspection, all parts are in line with standards; valves and valve guides, cylinder liners, piston rings and other gaps, the gap all meet the requirements. Once again installed (not installed cylinder head), the car was observed and found that the piston head is always biased flywheel side of the cylinder wall, the other side there is a gap. Suspected to be caused by connecting rod bending, the piston rod group pulled out from the cylinder liner, flip 180 ° back, the car observation, the situation with the previous, that no problem connecting rod. Remove the V-belt and found it