为保证配气正时,凸轮轴与曲轴间,必须保持一定的相互关系.因此,在正时齿轮上一般都作有记号,安装正时齿轮时,应使相应的记号对正.在拆装中,如正时齿轮记号不清或错乱,可按下述方法安装:转动曲轴,使第一缸活塞处于上止点,然后转动凸轮轴,当第一缸的两凸轮处于 In order to ensure the valve timing, the camshaft and the crankshaft must maintain a certain relationship, therefore, the timing gear are generally marked, the timing gear installation, the corresponding mark should be aligned in the disassembly , If the timing gear mark is not clear or confused, it can be installed as follows: Turn the crankshaft so that the first cylinder piston in the top dead center, and then rotate the camshaft, when the first cylinder two cams in the