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工农-12型手扶拖拉机乱档的主要原因是主变速杆头部与拨叉槽的相对位置发生了变化—头部上翘或下垂,脱出拨叉槽,挂档时,同时拖带两个拨叉挂上双档。或在摘档时,变速杆头部脱出拨叉槽外侧,这时如果再去拨动另一个拨叉,也挂上双档。此外,操作不当,换档动作过快,过猛,也会使变速杆头部跳出拨叉槽,造成乱档故障。检查乱档的原因可按下述步骤: 一、外部检查 1.检查主变速杆与限位框接触处是否因磨损严重而造成变速杆头部上翘。磨损严重时,应更换限位框,并用电焊填平主变速杆磨损所形成的凹坑。 2.检查手把座与变速箱盖连接固定孔是否因磨损
The main reason for the worker-peasant-12 walking tractor messy file is that the relative position of the main shift lever head and the shift fork slot has changed - the head is upturned or drooped out of the shift fork slot and the shift file is towed simultaneously Forked up double gear. Or pick the file, the gear lever head out of fork groove outside, then if you go to dial another fork, but also linked to double gear. In addition, improper operation, shift action too fast, too fast, will make the shift lever head out of the fork groove, causing chaos stalls. Check the reasons for the chaos file can be the following steps: First, the external inspection 1. Check the main gear lever and the limit frame at the contact place is caused by serious wear and tear gear lever head upturned. When the wear is serious, the limit frame should be replaced and the pit formed by wear of the main gear should be filled by welding. 2. Check whether the handle hole and the gearbox cover fixing hole are worn