我场于90年代引进一批T-75M型履带拖拉机(发动机型号A-41)。这种拖拉机功率大、省油、故障少,深受用户好评;然而在今年大修中发现该拖拉机的主轴瓦磨损普遍严重,轴瓦间隙都在0.30～0.40毫米之间,有的达0.60毫米,并且轴瓦拉伤严重。造成主轴瓦磨损严重,主要有以下二方面的原因。 1.缸套活塞磨损严重。大修中发现凡是缸套活塞磨损严重的,主轴瓦就磨损严重。有 In the 90’s, I introduced a number of T-75M crawler tractors (engine model A-41). This tractor, large power, fuel-efficient, less faulty, praised by users; however, this year overhaul found that the tractor’s main bearing wear is generally serious, bearing clearances are between 0.30 to 0.40 millimeters, some up to 0.60 millimeters, and the bearing Severe injuries. Main wear and tear caused by the main bearing, mainly in the following two reasons. Cylinder liner piston wear seriously. Overhaul found that the cylinder liner piston wear serious, the main bearing on the serious wear and tear. Have