Lincoln C3AZ-4635-J U-Joint

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Wear in the needle roller bearings is characterised by vibration in drive-line, clunks' on taking up the drive, and in extreme cases of lack of lubrication, metallic squeaking, and ultimately grating and shrieking. It is easy to check if the needle roller bearings are worn with the driveshaft in position, by trying to turn the shaft with one hand, the other hand holding the rear axle pinion flange when the rear universal joint is being checked, and the front half coupling when the front universal is being checked, Any movement between the driveshaft and the front and rear half couplings is indicative of considerable wear. If worn, the old bearings and spiders will have to be discarded and repair kit, comprising new universal joint spiders, bearings, oil seals,and retainers purchased. Check also by trying to lift the shaft and noticing any movement in the joints. Examine the driveshaft splines for wear. If worn it will be necessary to purchase a new front half coupling, or if the yokes are badly worn, an exchange driveshaft. It is not possible to fit oversized bearings and journals to the trunnion bearing holes.

Clean away all traces of dirt and grease from the snap-rings located on the ends of the bearing cups. Remove the snap-rings by pressing their open ends together with a pair of pliers, and lever them out with a screwdriver, If they are difficult to remove, tap the bearing cup face resting on the top of the spider with a soft-faced hammer which will ease the pressure on the snap-ring. Take off the bearing cups on the driveshaft yoke. To do this select two sockets from a socket spanner set, one large enough to fit completely over the bearing cup and the other smaller than the bearing cup. Open the jaws of the vise and with the sockets opposite each other and the universal joint in between, tighten the vise and so force the narrower socket to move the opposite cup partially out of the yoke into the larger socket. Remove the cup with a pair of pliers. Remove the opposite cup.and then free the yoke from the driveshaft. To remove the remaining two cups now repeat the instructions, or use a socket and hammer. Recover the thrust bearing from inside each cup and remove the seal from the base of each spider journal. Before reassembling, using new parts as necessary, thoroughly clean out the yokes and journals. Fit new oil seals to the spider journals and then assemble the needle rollers in the bearing cups with the assistance of some thin grease. Fill each bearing cup about one third full with a universal grease.not forgetting to refit the thrust bearings first. Refit the bearing cups on the spider and tap the bearings home so that they lie squarely in position. Replace the snap-rings and settle the cups by tapping the whole assembly with a soft faced hammer. Check that angular movement of the universal joint is free throughout its full range without signs of stiffness.

Single-cardan U-joints on some 1970 through 1988 models and all 1989 and later models can be replaced by following these steps. First, remove the driveshaft and snap-rings from the spider. Place the driveshaft on a workbench equipped with a vise and use a pipe or large socket to press out the bearing caps. Transfer the sockets to the other side and press out the opposite bearing cap. Pack the new universal joint bearings with grease and position the spider in the yoke. Install the bearing caps and snap-rings, then fill the joint with grease. Finally, reinstall the driveshaft. For double-cardan U-joints, remove the snap-rings and mark the relationship of the components. Press out the bearing caps and remove the centering ball and dust cover. Install new components and press in the bearing caps. Install new snap-rings and reassemble the front U-joint by removing the centering socket.

This is easier than for the front universal joint as only two spider cups have to be removed. The Remaining cups simply slide off the spider journals, these being held in position by the two U-bolts and small lips on the pinion flange cup locations. Overhaul is otherwise.

This is easier than for the front universal joint as only two spider cups have to be removed. The Remaining cups simply slide off the spider journals, these being held in position by the two U-bolts and small lips on the pinion flange cup locations. Overhaul is otherwise.

Clean away all traces of dirt and grease from the snap-rings located on the ends of the bearing cups. Remove the snap-rings by pressing their open ends together with a pair of pliers, and lever them out with a screwdriver, If they are difficult to remove, tap the bearing cup face resting on the top of the spider with a soft-faced hammer which will ease the pressure on the snap-ring. Take off the bearing cups on the driveshaft yoke. To do this select two sockets from a socket spanner set, one large enough to fit completely over the bearing cup and the other smaller than the bearing cup. Open the jaws of the vise and with the sockets opposite each other and the universal joint in between, tighten the vise and so force the narrower socket to move the opposite cup partially out of the yoke into the larger socket. Remove the cup with a pair of pliers. Remove the opposite cup.and then free the yoke from the driveshaft. To remove the remaining two cups now repeat the instructions, or use a socket and hammer. Recover the thrust bearing from inside each cup and remove the seal from the base of each spider journal. Before reassembling, using new parts as necessary, thoroughly clean out the yokes and journals. Fit new oil seals to the spider journals and then assemble the needle rollers in the bearing cups with the assistance of some thin grease. Fill each bearing cup about one third full with a universal grease.not forgetting to refit the thrust bearings first. Refit the bearing cups on the spider and tap the bearings home so that they lie squarely in position. Replace the snap-rings and settle the cups by tapping the whole assembly with a soft faced hammer. Check that angular movement of the universal joint is free throughout its full range without signs of stiffness.

Wear in the needle roller bearings is characterised by vibration in drive-line, clunks' on taking up the drive, and in extreme cases of lack of lubrication, metallic squeaking, and ultimately grating and shrieking. It is easy to check if the needle roller bearings are worn with the driveshaft in position, by trying to turn the shaft with one hand, the other hand holding the rear axle pinion flange when the rear universal joint is being checked, and the front half coupling when the front universal is being checked, Any movement between the driveshaft and the front and rear half couplings is indicative of considerable wear. If worn, the old bearings and spiders will have to be discarded and repair kit, comprising new universal joint spiders, bearings, oil seals,and retainers purchased. Check also by trying to lift the shaft and noticing any movement in the joints. Examine the driveshaft splines for wear. If worn it will be necessary to purchase a new front half coupling, or if the yokes are badly worn, an exchange driveshaft. It is not possible to fit oversized bearings and journals to the trunnion bearing holes.

The steps are as follows: 1. Remove the driveshaft and snap-rings from the spider. 2. Place the driveshaft on a workbench equipped with a vise. 3. Use a pipe or large socket to press out the bearing caps. 4. Transfer the sockets to the other side and press out the opposite bearing cap. 5. Pack the new universal joint bearings with grease. 6. Position the spider in the yoke. 7. Install the bearing caps and snap-rings. 8. Fill the joint with grease. 9. Reinstall the driveshaft.

The steps to replace double-cardan U-joints are as follows: 1. Remove the snap-rings and mark the relationship of the components. 2. Press out the bearing caps. 3. Remove the centering ball and dust cover. 4. Install new components. 5. Press in the bearing caps. 6. Install new snap-rings. 7. Reassemble the front U-joint by removing the centering socket.

Tighten the companion flange bolts to the torque specifications.