近期,我县房界北村、法寺村两个机手买回195型柴油机挺杆装上后,使用均不到一个半小时,柴油机就出现声音不好听、功率不足、冒黑烟等现象。经检查是气门间隙变大了,重新调整气门间隙后,用了不到一个小时,又出现上述情况。拆开检查发现,新换的两个挺杆大端与凸轮轴接触处磨损严重,有的地方象用锤子敲打过一样,甚至已脱圈掉了下来。再仔细一看,该零件根本不是用钢加工的淬火件,而是熟铁件。 Recently, my county Fangcun Kitamura, Fa Temple Village two hands buy 195 diesel engine tappet fitted with less than an hour and a half, the diesel engine on the sound does not sound good, power shortage, black smoke and so on. After the inspection is the valve clearance has increased, re-adjust the valve clearance, with less than an hour, and the above situation. Disassembled the inspection found that the new for the two tappet big end and camshaft wear serious contact, in some places like a hammer beat the same, or even off the ring down. A closer look, the parts are not quenched steel processing, but the wrought iron pieces.