Universal Joints

The universal joints (U-joints) are lubricated for life except on motorhome chassis vehicles. Two types of universal joint kits are used on Ford light trucks: Dana design and Ford design. The designs are similar. The universal joints are equipped with a nylon thrust washer at the base of the bearing cup. This thrust washer controls end play, positions the needle bearings and improves grease movement. Parts are not interchangeable between Dana and Ford design universal joint kits.

 CAUTION: Universal joint components from different manufacturers or new and used universal joint kits should never be mixed. Universal joints are to be installed as complete assemblies only.

All two- and three-piece driveshaft vehicles are equipped with driveshaft center bearing supports (4800) that are prelubricated and sealed for life.

U-joints and driveshaft slip yokes (4841) equipped with grease fittings should be lubricated at the intervals specified in Section 00-03. U-joint bearings are retained on the U-joints spiders by snap rings and U-bolts or straps on some applications.

Two different attaching systems are incorporated to attach the driveshaft (4602) to the drive axle. Depending on application, either a driveshaft flange yoke (4866) is bolted to the (circular) companion flange, or a universal joint is attached to the rear axle companion flange by means of U-bolts, or bolts with straps.