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小松WA系列装载机变速挡位控制采用机、电、液一体化技术,通过操纵变速杆和方向杆的不同组合,获得前进、倒退各4个挡位。该系列装载机在长时间使用后,其控制挡位的电器元件、线路等零部件故障会增多。现介绍2例挡位控制故障的排查方法。1.只有1个挡位1台WA420-3型装载机在平地上行走正常,而在爬坡过程中突然出现行走无力现象。检查变速杆在4个挡位前进、后退行走速度均无变化,初步判断挡位控制部分出现故障。
Komatsu WA series loader gear control using mechanical, electrical, hydraulic integration technology, through the manipulation of the gear lever and the combination of different directions to get forward and backward four gear. The series of loaders in the long-term use, the control gear of electrical components, wiring and other components failure will increase. Now introduced two cases of gear control troubleshooting troubleshooting. 1. Only one gear a WA420-3 loader walking on the ground normal, but suddenly in the process of climbing weak walking phenomenon. Check the shift lever in the 4 gear forward, no change in the walking speed, the initial judge gear control part of the failure.