In the repair of the drive shaft
Bolts of automobiles,technical details that are easily overlooked may be:
(1)The joint shaft of the transmission shaft has a stop.Under normal circumstances,the joint of the universal joint fork should be in place;if the stop is hit by a hammer or other reasons,there is burr,or there is sediment and debris attached.At the stop,no matter how the drive shaft bolt is tightened,the two-way joint fork stop can not be in place;during the running of the vehicle,the transmission shaft transmits the torque and generates vibration,and the drive shaft bolt will loosen:
(2)The drive shaft bolts are used improperly.The drive shaft bolts are special bolts.Generally,fine thread is used.It is not suitable to use coarse thread.Especially when the nut is thin,the coarse thread cannot be used because the fine thread has a small pitch and the inner diameter.Larger,the thread angle and lead are smaller,the bearing capacity is high,and the self-locking performance is good.Loose drive shaft bolts are caused by the use of coarse threads on thin nuts.
