Description And Operation: Driveshaft

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: All driveshaft assemblies are balanced. If undercoating the vehicle, protect the driveshaft to prevent overspray of any undercoating material.

The driveshaft assembly consists of the following:

Rubber isolated center support bearings
Constant velocity (CV) joint at the power transfer unit (PTU)
U-joints at the center supports and pinion flange
Assembly balanced with traditional balance weights
Lubed-for-life joints requiring no periodic lubrication

The driveshaft transfers torque from the PTU to the rear axle. It is attached to the PTU flange with a CV joint. The 3-piece shaft is connected by a staked U-joint at each center bearing and attached to the rear pinion flange. The driveshaft joints allow the smooth continuous rotation of the driveshaft through the allowable angle planes and length variations required in normal vehicle operation. The driveshaft is always turning at front wheel speed. The driveshaft is not serviceable. A new driveshaft must be installed if worn or damaged.