一台手扶拖拉机,发动机工作时伴有异常响声,在一次作业中突然熄火后无法启动。 根据情况分析,故障可能出在燃油供给系统或配气系统。经检查喷油器没有问题,再检查高压油泵发现油门调解手柄卡滞不灵活。拆下齿轮室盖,发现调速杠杆与高压泵齿条接触的齿杆拨叉一端总是靠近机体里侧,不能回到中间位置,而调速杠杆与调速器滑盘接触一端总在高速位置不能回位。仔细检查发现,滑盘被从调速支架上掉下来的钢球卡住了,调速器失灵。 A walking tractor, the engine is working with an abnormal noise, can not start after a sudden turn off in an operation. According to the situation analysis, the fault may be in the fuel supply system or gas distribution system. After checking the injector is no problem, then check the high-pressure pump found that the accelerator handle jam is not flexible. Remove the gear chamber cover and found that the governor lever and the high-pressure pump rack contact with the gear lever at one end is always close to the body inside, can not return to the middle position, and speed governor lever contact with the governor always high-speed Location can not be returned. Careful examination found that the sliding plate was dropped from the speed control bracket stuck ball, the governor failure.