E512联合收割机行走无级变速器,是在主动轮轴承座上装有两个油缸柱塞,靠油缸柱塞的轴向位移来改变皮带轮动盘的位置,使皮带在轮槽中的径向位置改变来达到变速。但使用2～3年后,油缸柱塞和套筒的磨损,使配合间隙增大,阻油圈容易损坏而漏油,油缸柱塞和套筒不能继续使用。更换 E512 combine harvester walking CVT is equipped with two cylinder plungers on the driving wheel bearing seat. The axial displacement of the cylinder plunger can change the position of the belt pulley so as to change the radial position of the belt in the wheel groove To achieve speed. However, the use of 2 to 3 years, the cylinder plunger and sleeve wear, so that with the gap increases, easy to damage the oil ring and the oil leakage, cylinder plunger and sleeve can not continue to use. replace