怎样选购气缸套、活塞和活塞销当拖拉机的气缸套和活塞裙部的配合间隙、活塞销孔和活塞销的配合间隙分别磨损到极限值时，应修复或更换标准件。但常见到新买来的气缸套、活塞和活塞销装到拖拉机上后，却出现了起动困难或起动不着，工作无力，排气管冒黑烟，费油和机身震动... How to choose a cylinder liner, piston and piston pin When the tractor cylinder liner and piston skirt with the gap, the piston pin hole and piston pin with the gap were worn to the limit value, you should repair or replace the standard parts. But common to the newly purchased cylinder liner, piston and piston pin mounted to the tractor, but there was a difficult start or start, work weak exhaust black smoke, oil and body vibration ...