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实例一 故障现象:一辆AG100型摩托车,打着火在怠速时,有一种“啪啪”的异响声,随着油门加大,声音减小。 故障分析与排除:对该系列车,经常清洗滤清器是相当重要的,因灰尘稍大时会引起气缸、活塞的磨损。为此先进行气缸、活塞的检查,未发现有明显的磨损迹象。活塞环也正常。查启动部分:发现电启动齿轮锈蚀很严重,更换后问题还在。又拆开发动机左边盖,查看变速主传动部分,其活动从动盘及滚柱也正常,启动棘轮啮合也正常。查传动皮带,从外观看无明显损伤,拿卡尺一测其侧面宽度。发现皮带尺寸已严重超差,正常皮带使用极限为16mm。为此更换一新皮带,异响消失,故障排除。
Example A failure phenomenon: an AG100 motorcycle, hit the fire at idle, there is a “pop” sound of abnormal sound, with the throttle increases, the sound decreases. Failure Analysis and Troubleshooting: The car series, often cleaning the filter is very important, because the dust will cause a larger cylinder, piston wear. For this first cylinder, piston inspection, found no obvious signs of wear and tear. Piston ring is normal. Check start part: Found that the electric starter gear corrosion is very serious, the problem still after replacement. Also open the left cover of the engine to view the main transmission part of the shift, the activities of the disc and roller also normal, start ratcheting mesh is also normal. Check the drive belt, no obvious damage from the appearance, take a caliper to measure the side width. Belt size is found to have serious over tolerance, the normal use of the belt limit of 16mm. To replace a new belt, abnormal noise disappears, troubleshooting.