Mopar 52123021AE Drive Shaft Rear Front

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A driveshaft transmits power between the transmission and the differential(s), with universal joints allowing operation at different angles. Three types of universal joints are used: single-cardan, double-cardan and constant velocity. Some models have a two-piece driveshaft connected at a center support bearing. The driveshaft can alter its length during vehicle operation, with an oil seal preventing fluid leakage. If leakage is evident, replace the extension housing oil seal. Factory U-joints are lubricated for life and must be replaced if issues arise. The driveshaft is a balanced unit and should be kept clean and free from accumulation. It should be reinstalled in the same position to maintain balance. Driveshaft problems are usually indicated by noise or vibration while driving.

After applying the lubricant, you should wipe any extra grease and dirt from the area with a rag.

To install the driveshaft, remove the plastic bag from the transmission or transfer case extension housing and wipe the area clean. Inspect the oil seal and center support bearing. Insert the front end of the driveshaft assembly into the transmission or transfer case extension housing. Raise the rear of the driveshaft into position, checking the alignment marks. If it's a two-piece unit, raise the center support bearing and bolt it loosely into place. Raise the rear end of the rear shaft into position and make sure the alignment marks are in alignment. Remove the tape securing the bearing caps and install the clamps and fasteners.