1.常见故障(1)曲轴主轴颈中心线与各气缸中心线不垂直,造成活塞在气缸的上、中、下各部均偏斜于同一侧。(2)连杆扭曲,或连杆小头孔与大头孔中心线不在同一平面,活塞在气缸的中部改变偏斜方向。(3)连杆轴颈的圆柱度偏差过大,或连杆轴颈轴瓦中心线不平行,使活塞在气缸的上、下止 1. Common faults (1) The centerline of the main journal of the crankshaft is not perpendicular to the centerline of each cylinder, causing the piston to deflect on the same side of the upper, middle and lower parts of the cylinder. (2) The connecting rod is distorted, or the connecting rod small hole and the large hole center line are not in the same plane, the piston changes the direction of deflection in the middle of the cylinder. (3) Cylinder journal cylinder deviation too large, or connecting rod bearing bush centerline is not parallel, so that the piston in the cylinder, the next stop