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1.不能换挡一台GJW111型挖掘机在使用过程中出现了不能换挡,即发动机在怠速运转状态下不挂挡、不加油机器就自行前进,且不能挂入倒挡,动臂缸也不能工作。同时,行走马达发出“嗡嗡”的响声,用手触摸感觉发热。经过初步判断,发生故障的原因可能有:液压油箱油量不足;液压油出油口滤芯堵塞或回油滤油器堵塞;变速
1. Can not shift a GJW111 excavator in the course of the emergence of the can not shift, that is, the engine does not hang up under idle conditions, do not fuel the machine on its own, and can not be linked into the reverse gear, boom cylinder can not work. At the same time, the walking motor emits a “buzzing” sound, touch feeling fever. After a preliminary judge, the reasons for the failure may be: lack of hydraulic oil tank; hydraulic oil outlet filter plugged or plug the oil filter plug; variable speed