上个月,小黄让我帮他修理一台丰收—37型拖拉机,一检查又是飞轮螺钉折断了。时隔不到三个月,如此故障就发生了两次,且每次都断了3～4根。进一步检查还发现,飞轮螺钉的螺纹部分全都断在曲轴法兰盘上。后来了解到,小黄驾驶的这台丰收—37型拖拉机是从另一个机手处买来的,该机根本就没装起动装置。平时起动拖拉机时,都是靠溜坡或靠别的拖 Last month, Xiao Huang let me help him repair a bumper harvest -37 tractor, a check is the flywheel screw broken. Less than three months later, so the fault occurred twice, and each time off 3 to 4. Further examination also found that the threaded part of the flywheel screw was all broken on the crankshaft flange. Later learned that Huang’s driving this harvest -37 tractor is bought from another machine, the aircraft did not install starter. Usually start the tractor, are by the slope or by other drag