配气相位是否准确将严重影响发动机工作性能。对于东方红-75/802型拖拉机,配气正时齿轮上的正时记号一般应该位于配气凸轮轴齿轮定位孔中心线正对的轮齿逆时针方向错开一个齿的位置。目前由于农机配件厂家较多,生产的配气凸轮轴齿轮的记号常出现打错现象,把记号打在第二个齿上或第三个齿上,在进行正时齿轮装配时,应特别注意购买的齿轮 Whether the gas phase is accurate will seriously affect the engine performance. For Dongfanghong -75 / 802 tractor, the timing symbol on the timing gear should generally be located one tooth counterclockwise in the counterclockwise direction of the center line of the positioning hole of the distribution camshaft gear. At present, due to more agricultural machinery parts manufacturers, the production of gear camshaft gear markings often appear wrong, hit the mark on the second tooth or the third tooth, when timing gear assembly, should pay special attention Buying gear