The accident was due to the action of acid o the check nut.
事故是由于酸对防松螺母的作用而发生的。
Make sure check the bolt and nut before testing run. and if they become less crowded, fastening again.
试车前务必检查所有螺栓、螺母是否有松动，若有松动的螺栓、螺母必须重新紧固。
Maintenance should first check the tire pressure, wear, nut loose or fall off, remove the twins or tread on the inserts and nails and other sharp objects.
养护时首先应查看轮胎气压、磨损状况，螺母有无松动或掉落，除去双胎间或胎面上的嵌入物及铁钉等尖利杂物。
Check the bolt and nut and filling press cover, it it become flexible during the transport or store, screw down it.
内腔进行去湿处理并检查各连接部位的螺栓、螺母和填料压盖等是否在运输和存放过程中产生松动，如发现应均匀拧紧。
Then loose the rocker nut of journey switch, and adjust the rocker to front, if after adjusted for many times still not available, then please check the journey switch whether was damaged or not.
把行程开关摇臂螺母松开，将摇臂往前调即可，如多次调整无效，请检查开关是否损坏。
Then loose the rocker nut of journey switch, and adjust the rocker to front, if after adjusted for many times still not available, then please check the journey switch whether was damaged or not.
把行程开关摇臂螺母松开，将摇臂往前调即可，如多次调整无效，请检查开关是否损坏。
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