Though the transmission is left behind as soon as the power is generated by your BMW engine still it must go through a list of complex processes prior to the moment your sedan is set to start. A BMW drive shaft is that mechanical component which transmits torque and rotation to the axle or wheel from the transmission and helps in maintaining a relative movement between other components of a drive train like engine, differentials, transmission etc.
Drive shafts are also known as Driving Shafts or Propeller Shafts or Cardan Shafts. Basically the BMW drive shaft transmits the torque from your BMW engine with the help of output shaft to the driving axle and then finally to the wheels. This transmission of power is impossible without the two flexible joints namely Universal joints (U-joints) & Constant Velocity joints (CV-joints). The universal joints are hooked up with the differentials at the rear to help the BMW driveshafts to remain at the correct angles to the transmission and the rear differential in order to distribute the power constantly. However, in the front constant velocity joints are used instead of universal joints for they are more flexible to allow a lateral movement of the steering tires when combined with a slip joint. Also, they produce less vibration as compared to the universal joint.
Actually such power transmissions are vital to the engine for they allow the generation of power in best possible engine speeds. In other words, we may say that a pair of drive shaft transmits power from a central differential, transmission, or transaxle to the wheels.
BMW drive shaft is a longitudinal shaft which is constructed from either steel or aluminum and can be a solid designed or hollow (tubular) structured. As per the need of a user and the specification of a BMW model, a wide range of BMW drive shafts are available in the market for example 1-piece drive shaft, 2-piece drive shaft, Slip-in-tube drive shaft.
Symptoms of a bad BMW Driveshaft
- In any driveshaft, the joints may commence to go through the ill-effects of corrosion and other perilous substances.
- If a grinding noise just before the joints is audible to you then it can be due to a worn-out U-joint, or a slip joint abrasion, or slow destruction of a center support bearing.
- If a metal hammering noise is audible to you then it is your CV-joint which needs to be checked and such a harassing noise occurs when the drive shaft may beat the frame tunnel.
- In case the Audi driveshaft is not installed or fitted properly, it may vibrate.
Precautions to be taken
- Avoid over loading the driveshaft and do not forget to check the fittings of the U-joint and its clamp bolts.
- Equal importance should be paid while repairing or replacing BMW drive shaft to all the joints like the universal joint, center bearing and constant velocity joint.
- Lubrication of a U-joint needs to be checked properly and it is advised to replace the gear lubricant whenever needed.