柱塞副磨损，一般在柱塞头部比较大，磨损区域是在工作时经常对着柱塞套进油孔的地方，有轴向细微沟痕。 在修理工作中，我们采用柱塞去顶法，即把柱塞顶部去掉 0.5～ 1mm。去顶方法可手工操作，在细砂轮上磨削 (必须保证柱塞顶面与柱塞轴心线垂直 )。去顶后的柱塞顶端，须用油 Plunger pair wear, the head is generally larger in the plunger, the wear area is often in the work of the plunger sleeve into the hole, a small axial groove marks. In the repair work, we use the plunger to the top law, that is, remove the top of the plunger 0.5 ~ 1mm. To the top of the method can be manually operated grinding on the fine grinding wheel (must ensure that the plunger top and plunger axis perpendicular to). Go to the top of the plunger, to be oil