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一台ZL50装载机的6135k-9a柴油机,大修半月后就出现机油油面升高且机油中有柴油味的现象。 现场检查时,先启动马达,但柴油机不转,同时发现Ⅴ、Ⅵ缸缸体中上部位置发白、无油迹,与前4个缸位置的颜色显然不一样,估计是拉缸抱死。拆下Ⅴ、Ⅵ缸的缸盖检查,发现Ⅵ缸已拉缸粘住。拆下Ⅲ、Ⅳ缸的缸盖后,当拆开气门室盖时,发现Ⅲ缸气门摇臂座的固定螺钉已松脱,摇臂座也折断1/4左右,气门推杆已脱离气门摇臂头;更为严重的是,通往气门摇臂的润滑油管（U形油管）折断,气门摇臂头调整螺钉的一端也由半圆头磨成了平面状;Ⅲ缸的活塞顶上有较多量的机油
A ZL50 loader 6135k-9a diesel engine, overhaul a month after the emergence of the oil surface and oil diesel oil smell phenomenon. On-site inspection, first start the motor, but the diesel engine does not turn, while found Ⅴ, Ⅵ cylinder cylinder in the upper position of white, no oil, and the first 4 positions of the cylinder is obviously not the same color, it is estimated that the cylinder pull lock. Remove Ⅴ, Ⅵ cylinder head inspection and found that Ⅵ cylinder has pulled cylinder stick. After removing the cylinder head of Ⅲ, Ⅳ cylinder, when the valve cover is disassembled, it is found that the fixing screw of the rocker arm seat of the third cylinder valve has been loosened and the rocker arm seat also has a break of about 1/4 and the valve push rod has been separated from the valve rocker More serious is that the oil pipe leading to the valve rocker arm (U-shaped tubing) broken off, one end of the valve rocker arm adjustment screw is also ground by the semicircular head into a planar shape; Ⅲ cylinder piston top has more A lot of oil