Cadillac 88964413 Joint Kit,Front Axle Propeller Shaft Universal

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A driveshaft is a tube or pair of tubes that transmits power between the transmission and differential, with universal joints located at either end and in the center of two-piece driveshafts. Single piece driveshafts have a splined yoke at the front that allows for movement during vehicle operation, while two-piece driveshafts have a slip joint on the front of the rear section and a center support bearing. The driveshaft assembly requires little service, with universal joints lubricated for life and replaced if problems arise. Inspection involves checking for dents, cracks, and oil leakage, as well as ensuring proper operation of universal joints and center bearings. Driveshaft mounting bolts should also be checked for tightness, and similar checks should be performed on the front driveshaft and driveaxles of 4WD models. Noise or vibration while driving may indicate problems with the driveshaft or other components.

The two types of universal joints mentioned are the outer snap-ring type and the injected plastic (inner snap-ring) type.

The process for replacing the injected plastic type universal joint involves removing the snap-rings if the joint has been previously rebuilt, and pressing out the bearing caps. The U-joint is then removed and cleaned, and the plastic material is removed from the yoke. Reassembly is the same as for the outer snap-ring joint, except the snap-rings are on the inner part of each bearing cap. If the joint is stiff after assembly, the yoke ears can be struck with a hammer to free up the joint.

Universal joints are located at either end and in the center of two-piece driveshafts.

Single piece driveshafts have a splined yoke at the front that allows for movement during vehicle operation, while two-piece driveshafts have a slip joint on the front of the rear section and a center support bearing.

The process for replacing the injected plastic type universal joint involves removing the snap-rings if the joint has been previously rebuilt, and pressing out the bearing caps. The U-joint is then removed and cleaned, and the plastic material is removed from the yoke. Reassembly is the same as for the outer snap-ring joint, except the snap-rings are on the inner part of each bearing cap. If the joint is stiff after assembly, the yoke ears can be struck with a hammer to free up the joint.

In 4WD models, the front driveshaft and driveaxles should also be checked.

The process for replacing the injected plastic type universal joint involves removing the snap-rings if the joint has been previously rebuilt, and pressing out the bearing caps. The U-joint is then removed and cleaned, and the plastic material is removed from the yoke. Reassembly is the same as for the outer snap-ring joint, except the snap-rings are on the inner part of each bearing cap. If the joint is stiff after assembly, the yoke ears can be struck with a hammer to free up the joint.