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一台新的295型柴油机,工作时一加负荷,排气管就冒黑烟,转速跌降,直至熄火。当时用“断缸法”查出是第一缸有问题。拆下该缸喷油器检查,喷油压力和喷油质量都合要求。该机是新的,气缸活塞组件不可能严重磨损。因此怀疑配气系统有问题。经检查,第一缸进气门间隙达10毫米,显然间隙过大,必须调整。可是当调整气门间隙后发现无法用螺母将气门调整螺钉锁紧。于是又拆下摇臂总成检查,终
A new 295 diesel engine, working load, the exhaust pipe on the black smoke, speed down, until the flame. At that time with “off cylinder method ” is found to be the first cylinder has a problem. Remove the cylinder injector check, injection pressure and fuel injection quality are required. The machine is new, the cylinder piston assembly can not be severely worn. Therefore, there is a problem with the gas distribution system. After inspection, the first cylinder intake valve clearance of 10 mm, apparently the gap is too large, we must adjust. But when adjusting the valve clearance and found that the valve can not be screwed to adjust the screw. Then remove the rocker assembly inspection, and finally