在农机修配中,许多零件看似有多种装配位置,但各有其特殊的要求。它们上下、左右以及内外等不同的装配关系,将产生完全不同的效果,现举十个例子加以说明:镀铬活塞环应装在活塞上部第一道环槽,以提高其耐磨性。活塞环有倒角的一面或者活塞环开口处有记号的一面应朝上(即向着燃烧室),防止把润滑油刮到燃烧室去。卧式柴油机的连杆小头有油眼的一面应朝上,以便润滑连 In the agricultural machinery repair, many parts appear to have a variety of assembly positions, but each has its own special requirements. Their different up and down, left and right and inside and outside the assembly relationship, will have a completely different effect, to give a ten examples to illustrate: chrome-plated piston ring should be installed in the first ring groove on the piston to improve its wear resistance. The chamfered side of the piston ring or the marked side of the piston ring opening should point upward (ie toward the combustion chamber) to prevent the lubricant from blowing to the combustion chamber. Horizontal diesel engine connecting rod small head with oil eye side should be up for lubrication