目前,气门仍普遍采用传统的手工研磨,现简述如下: 首先检查气门工作面有无麻点、凹陷和斑痕,应光磨消除。检查气门杆的弯曲度,可将气门杆放在V型架上,用千分表检查其中部的摆差,如东方红-75、802拖拉机气门杆摆差超过0.02毫米,应予冷压校直。检查气门杆的磨损,可用外径分厘卡检查,如其磨损超过0.125毫米,则应更换或喷镀、光磨至规定尺 At present, the valve is still commonly used traditional manual grinding, are summarized as follows: First check the valve face with no pitting, depression and scarring, should be polished to eliminate. Check the valve stem curvature, the valve stem can be placed on the V-shaped frame, with a dial indicator to check the central deviation, such as the East Red-75,802 tractor valve stem swing more than 0.02 mm, should be cold straightening . Check valve stem wear, available outside diameter cent card checks, such as its wear more than 0.125 mm, it should be replaced or sprayed, light grinding to the required size