The middle support bearing bracket of the drive shaft will fail if it is used for a long time. The maintenance methods are as follows:

Drive shaft middle bearing bracket removed after decomposition, clean, and then check before and after the oil seal cover has no wear, oil nozzle thread damage, support has no crack damage, rubber ring corrosion aging, if found cracks or before and after the oil seal cover wear and loose should be timely welding repair or replacement, rubber ring corrosion aging should be replaced.