我县某乡一位手扶拖拉机驾驶员,把190型柴油机的飞轮装在190A型柴油机上使用,致使排气管冒黑烟,转速时快时慢,功率下降。飞轮与曲轴在出厂前都经过了平衡试验,飞轮上面刻有定时角度,上、下止点的标记。互相代用飞轮,因质量不同,机械平衡受到破坏,造成机体振动增大,转速不稳。另外,飞轮代用,曲轴接盘和飞轮的位置 I County a walking tractor driver, the 190-type diesel engine flywheel mounted on the 190A diesel engine, resulting in exhaust pipe black smoke, fast speed when slow, power down. Flywheels and crankshafts have been balanced test before leaving the factory, the timing of the flywheel engraved above, the upper and lower dead center mark. Replace each other flywheel, due to different quality, mechanical balance is destroyed, resulting in increased body vibration, speed instability. In addition, the flywheel alternative, the crankshaft access disk and flywheel position