一台290型柴油机,由于用户在前期大修时,忽视了曲轴轴向间隙的检查调整,继续使用已严重磨损的旧曲轴止推片,加之使用中,止推片不断地磨损,使曲轴轴向间隙过大,止推片轴向移动,离开限位凹槽与曲轴同转。由于止推片凸缘的切削作用,造成 A 290 diesel engine, due to overhaul the user in the previous period, ignoring the crankshaft axial clearance inspection adjustment, continue to use the already worn out of the old crankshaft thrust plate, combined with the use of thrust plate constantly wear, the crankshaft axial The gap is too large, thrust piece axial movement, leaving the limit groove with the crankshaft rotation. Caused by the thrust plate flange cutting effect