How Do You Change U Joints On Vehicles?
Universal joints (U joints) are located at both ends of a vehicle’s driveshaft. As the driveshaft transfers power from the transmission to the differential, U joints allow the rigid shaft to “flex” without breaking. A U joint consists of two U-shaped yokes that hinge on a common cross-shaped piece. The four round ends of the cross rotate on needle bearings contained within caps that are fitted tightly inside the yoke flange bores. Worn or damaged U joints are dangerous, and should be replaced immediately. Support the vehicle on jack stands. Index the yokes by scribing matching alignment marks on both yokes of the front and rear U joints. This will allow you to align the yokes in the same position when you reassemble each U joint. Also scribe a mark on the transmission end of the driveshaft so you can orient it correctly upon reassembly. Remove either the U bolts or straps and bolts securing the rear U joint cross to the pinion gear flange. Using a large flathead screwdriver, pry the dr
