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韩国现代HL757-7型装载机采用4WG-16型电控换挡变速器,换挡时由EST-37型控制模块(TCU)对其实施控制,操控简单、快捷,可有效降低操作人员劳动强度,提高工作效率。本文讲述该机变速器换挡电控原理,并介绍其2次挂挡失灵故障的排查经历。1.变速器换挡电控原理(1)换挡组合开关该装载机变速器具有手动/自动换挡模式和快捷加力功能,通过换挡开关控制。换挡开关的操纵手柄为组合式开关,由换向开关、变速开关和加力开关3部分组成。操纵手柄的换
The Hyundai HL757-7 loader adopts the 4WG-16 electronic control gear shift transmission, which is controlled by the EST-37 control module (TCU) during gear shifting. The control is simple and quick. It can effectively reduce the labor intensity of the operator, Improve work efficiency. This article describes the machine transmission shift electronic control principle, and describes its 2 troubleshooting problems linked to troubleshooting. 1. Transmission shift electronic control principle (1) shift combination switch The loader transmission with manual / automatic shift mode and quick afterburner function, through the shift switch control. Shift switch handle for the combined switch, the commutation switch, variable speed switch and afterburner 3 parts. Joystick change