拆装经验两则拆装气门导管拆装气门导管要用专用冲子。由于内燃机型号繁多，经常会遇到没有合适专用冲子的情况。若用其他工具代替，很可能将气门导管冲坏，严重时还会损坏气缸盖。拆装气门导管可用如下方法：在原机的气门杆上套上一个螺母或几个平垫，螺母或平垫中间孔的... Disassembly experience two disassembly valve guide valve assembly and disassembly to use special punch. Due to the large variety of internal combustion engines, there are often situations where there is no suitable dedicated punch. If replaced with other tools, it is likely to damage the valve guide, in severe cases will damage the cylinder head. Disassembly and assembly of the valve catheter can be used as follows: In the original valve stem put a nut or a few flat pad, nut or flat pad intermediate hole ...