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活塞偏缸的检查及调整气门间隙是发动机修理装配中经常和必然遇到的问题。长期从事修理实践的工人在这方面已有丰富的经验,本文仅就其基本原理作一些说明。一、活塞偏缸的判断检查活塞偏缸时,先将未安装活塞环的活塞连杆组装入气缸,按规定扭力上紧连杆轴承螺母,然后转动曲轴,在上、下止点及气缸中部检查活塞头部前后两方向与气缸壁的间隙。如果无偏缸现象,上述三个部位活塞头部前后的间隙是相等的,否则,即有偏缸现象。偏缸可能有下面的情形:
Piston bias cylinder check and adjust the valve clearance is often and inevitable engine repair assembly problems encountered. Workers who have been engaged in repairing for a long time have had extensive experience in this field. This article only gives some explanations on the basic principles. First, determine the piston cylinder bias Piston bias cylinder, the piston rod is not installed piston ring assembly into the cylinder, according to the provisions of the tightening torque rod connecting nut, and then turn the crankshaft, at the bottom dead center and the middle of the cylinder Check the piston head in both directions before and after the gap with the cylinder wall. If there is no cylinder bias, the above three parts of the piston head gap before and after are equal, otherwise, that is partial cylinder phenomenon. Cylinder may have the following situation: