Nissan 37126-3S526 Kit Journal

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Always purchase a universal joint service kit for your model vehicle before beginning this procedure. Also, read through the entire procedure before beginning work. On all models, select-fit snap-rings are which should be 0.0008-inch (0.02 mm) or less. Check with your local auto parts store or dealer service department if the endplay is greater than specified after the joint is assembled (or if the joint is extremely tight and won't free-up). Remove the driveshaft. Place the driveshaft on a bench equipped with a vise. Remove the snap-rings with a small pair of pliers. Support the cross (also called a spider) on a short piece of pipe or a large socket and use another socket to press out the cross by closing the vise. Press the cross through as far as possible, then grip the bearing cap with pliers and remove it. A universal joint repair kit will contain a new cross, seals, bearings, caps and snap rings. Inspect the bearing cap bores in the yokes for wear and damage. If the bearing cap bores in the yoke are so worn that the caps are a loose fit, the driveshaft will have to be replaced with a new one. Make sure the dust seals are properly located on the cross. Using a vise, press one bearing cap into the yoke approximately 1/4-inch. Use chassis grease to hold the needle rollers in place in the caps. Insert the cross into the partially installed bearing cap, taking care not to dislodge the needle rollers. Hold the cross in correct alignment and press both caps into place by slowly and carefully closing the jaws of the vise. Use a socket slightly smaller in diameter than the caps to press them into the yoke. Press in one side, install the snap-ring, then press the other side to shift the cross assembly tight against the installed snap-ring and install the other snap-ring. Repeat the operations for the remaining two bearing caps. If the joint is stiff after assembly, strike the yoke sharply with a hammer. This will spring the yoke ears slightly and free up the joint.

A driveshaft is a tube, or a pair of tubes, that transmits power between the transmission (or transfer case on 4WD models) and the differential. Universal joints are located at either end of the drive shaft and in the center on two-piece driveshafts. Single-piece rear driveshafts employ a splined yoke at the front, which slips into the extension housing of the transmission. Two-piece driveshafts have a center support bearing. The universal joints are lubricated for life and must be replaced if problems develop. Problems with the driveshaft are usually indicated by a noise or vibration while driving the vehicle. To inspect the driveshaft, raise the rear of the vehicle and support it securely on jack stands. Block the front wheels to keep the vehicle from rolling off the stands. Release the parking brake and place the transmission in Neutral. Crawl under the vehicle and visually inspect the driveshaft for any dents or cracks in the tubing. Check for oil leakage at the front and rear of the driveshaft. Have an assistant rotate a rear wheel so the driveshaft will rotate and make sure the universal joints are operating properly without binding, noise or looseness. Listen for any noise from the center bearing (if equipped). Check the rubber portion of the center bearing for cracking or separation. Check the driveshaft mounting bolts at the ends to make sure they're tight. On 4WD models, the above driveshaft checks should be repeated on the front driveshaft, as well. Check for leakage where the driveshafts connect to the transfer case and front differential. Check for looseness in the joints of the front drive axles. Also check for grease or oil leakage from around the drive axles by inspecting the rubber boots and both ends of each axle.

Always purchase a universal joint service kit for your model vehicle before beginning this procedure. Also, read through the entire procedure before beginning work. On all models, select-fit snap-rings are which should be 0.0008-inch (0.02 mm) or less. Check with your local auto parts store or dealer service department if the endplay is greater than specified after the joint is assembled (or if the joint is extremely tight and won't free-up). Remove the driveshaft. Place the driveshaft on a bench equipped with a vise. Remove the snap-rings with a small pair of pliers. Support the cross (also called a spider) on a short piece of pipe or a large socket and use another socket to press out the cross by closing the vise. Press the cross through as far as possible, then grip the bearing cap with pliers and remove it. A universal joint repair kit will contain a new cross, seals, bearings, caps and snap rings. Inspect the bearing cap bores in the yokes for wear and damage. If the bearing cap bores in the yoke are so worn that the caps are a loose fit, the driveshaft will have to be replaced with a new one. Make sure the dust seals are properly located on the cross. Using a vise, press one bearing cap into the yoke approximately 1/4-inch. Use chassis grease to hold the needle rollers in place in the caps. Insert the cross into the partially installed bearing cap, taking care not to dislodge the needle rollers. Hold the cross in correct alignment and press both caps into place by slowly and carefully closing the jaws of the vise. Use a socket slightly smaller in diameter than the caps to press them into the yoke. Press in one side, install the snap-ring, then press the other side to shift the cross assembly tight against the installed snap-ring and install the other snap-ring. Repeat the operations for the remaining two bearing caps. If the joint is stiff after assembly, strike the yoke sharply with a hammer. This will spring the yoke ears slightly and free up the joint.

Maintenance of the driveshaft is typically minimal, with lifelong lubricated universal joints that require replacement if issues arise, necessitating the removal of the driveshaft for servicing.

During inspection, elevate the vehicle securely, inspect the driveshaft for dents or cracks, and check for oil leaks at both ends. Ensure that universal joints function smoothly without binding, noise, or looseness, inspect the center bearing for wear or damage, and assess the rubber portion for cracks. Verify universal joint integrity by attempting to twist it or lifting the shaft to detect any movement. Finally, inspect the driveshaft mounting bolts for tightness.

Use chassis grease to hold the needle rollers in place within the bearing caps.