配备双后轮的车辆在更换制动片以及因其他需要拆卸制动鼓时,通常先将轮胎拆卸下来,然后再拆卸半轴、轴头锁紧螺母,最后取下制动鼓。如此一来,轮胎螺母必须拆装一遍。众所周知,轮胎螺母紧固力矩较大,尤其是使用风动工具进行拆装,风动套筒在拆卸过程中,对轮胎螺栓产生较大的机械冲击,易使螺栓产生疲劳损伤。 Vehicles equipped with dual rear wheels When replacing the brake pads and because of other need to disassemble the brake drums, the tires are usually removed first, then the half-shafts, the shaft lock nuts and the brake drums removed. As a result, the tire nut must be disassembled again. It is well-known that the tightening torque of the tire nut is relatively large, especially the use of pneumatic tools for disassembly and assembly. The pneumatic sleeve has a large mechanical impact on the tire bolts during the disassembly process, which can easily cause fatigue damage to the bolts.