Mercury F5TZ-4635-A U-Joint Kit

You can Select Your Vehicle to check if F5TZ-4635-A fits your vehicle.

A press or large vise will be called for in this procedure and unless you have special access to heavy duty equipment, it may be well to take the driveshaft to a local dealer service department, service station or machinist if a universal joint is broken, generally at a moderate cost. Procedures start by eliminating the driveshaft. When the U-joints have external snap-rings, it is necessary to take out the snap-rings from the spider by means of a small pair of pliers. Place support blocks under the drive shaft and set the same on a flat working platform fitted with a vise. You can take a piece of pipe or a big socket where the inside diameter is a little greater than the outside diameter of the bearing cap; then align on it a socket of an outside diameter a little less than the outside diameter of the other bearing cap. Push the bearing cap out as far as you are able, use a vise or press and then use the vise or large pliers to finish it out. Slide the sockets to the other side and similar to the above process, push the bearing cap out. Apply grease to the new universal joint bearings and do it according to the instructions in the servicing kit that were given. Place the spider into the yoke and screw in one bearing cap to halfway, then turn the spider to start it into the second bearing cap and screw that in also to halfway. Synchronise the spider and fix the bearing caps in place but do not risk deforming the dust seals in the process. Fit the snap-rings, and if there is a problem in gripping, then use a hammer to strike on the driveshaft yoke to help the snap-rings to settle in the groove. Many a time, the joint is overfilled with grease when installing the grease fitting and this can blow out the grease seals. Finally, install the driveshaft.

To replace single-cardan U-joints, make sure you have a press or vise and a universal joint service kit. First, take off the driveshaft and use pliers to remove snap-rings from the spider. Then place the driveshaft on a workbench with a vise. Sockets should be used to press bearing caps out of the yoke. Fill new universal joint bearings with grease, and position the spider and caps before pressing them into place; do not forget snap-rings. Dust seals must not be damaged. Add grease and mount the driveshaft. Cardan U-joints should have rings removed and positions marked. Remove bearing caps in the center yoke and driveshaft yoke. Replace the centering ball and dust cover on the companion flange. Disassemble the center yoke and driveshaft yoke, and install new spider bearing in the driveshaft yoke. Insert new caps and seals with grease fitting facing away from the center yoke.

Driveshafts have a "slip yoke" at the front end that inserts into the extension housing of the transmission or transfer case. On two-piece rear driveshafts, a center bearing supports the driveline. The rear end of all rear driveshafts connects to the rear axle's differential pinion flange using a flange yoke with four bolts. Front driveshafts on 4WD models may have a slip yoke at either the front or rear end, depending on the vehicle type.

Strike the driveshaft yoke sharply with a hammer or strike the yoke with a brass hammer to relieve tension and slightly spring the yoke ears.

Partially install one bearing cap, start the spider into the bearing cap, partially install the other cap, and then press the bearing caps into position.

Problems with the driveshaft are typically signaled by noise or vibrations while driving. A road test can help confirm if the driveshaft is the source of the issue or if another vehicle component is at fault. If driveshaft trouble is suspected, it's advisable to inspect the driveline for possible problems.

It is advisable to have a press or large vise and a universal joint service kit ready before starting the procedure.

The front driveshafts on 2009 and later models use CV joints instead of U-joints.