故障现象是,当扭动启动钥匙到 “ON”时,启动机发出“嗒嗒”声,感觉启 动机无力,排气筒没有烟气排出,风扇 也不转动。经检查发现:蓄电池的电压、 电流和启动继电器都正常;拆下启动 机,用撬棍撬动飞轮齿,曲轴能够转动, 排除抱瓦的可能;机油油位升高,有柴 油气味;关闭启动钥匙,将PT泵上的柴 油管(至缸盖)断开,有柴油自行流出; 将排气岐管与缸盖的连接螺检松开,有 柴油渗出。 Fault phenomenon is that when the twist start key to “ON”, the starter machine issued a “rattling” sound, feel the starter is weak, the exhaust pipe is not flue gas emissions, the fan does not rotate. The inspection found that: the battery voltage, current and start the relay are normal; remove the starter, crowbar with crowbar flywheel teeth, the crankshaft can rotate to exclude the possibility of holding tile; oil level rises, the smell of diesel; off start Key, the PT pump on the diesel pipe (to the cylinder head) is disconnected, diesel outflow on its own; the exhaust manifold and cylinder head connection screw loosening, diesel seepage.