Q: How to raise and support a Dodge Ram 1500 and Ram 1500 securely on jack stands and clean the grease fitting on the front driveshaft?
A: Raise the vehicle and support it securely on jack stands. Clean the grease fitting on the front driveshaft with a rag. Use a conventional grease gun to apply sufficient lubricant to the fitting, but avoid applying so much that an excessive amount comes out. Wipe any extra grease and dirt from the area with a rag.
A: To replace the rear driveshaft, lift the vehicle and mark the driveshaft's position. Remove the bolts securing the driveshaft to the differential pinion flange. Pry the universal joint away and lower the driveshaft. If it's a one-piece, slide it out of the transmission housing; if it's a two-piece, mark the center support bearing's position, unbolt it, and slide the front end out. Cover the extension housing with a plastic bag. To install, remove the bag, clean the area, and inspect the oil seal and center support bearing. Insert the driveshaft into the housing, raise it into position, and check alignment marks. If it's a two-piece, loosely bolt the center support bearing. Raise the rear end, align marks, remove tape from bearing caps, and install clamps and fasteners. For 4WD models, mark the driveshaft's position, remove bolts and straps, make alignment marks, unbolt the flange, and remove the driveshaft.
Q: What is the purpose and maintenance of a driveshaft?
A: 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.