Hummer 89059111 Joint Kit,Front Axle Propeller Shaft Universal

A driveshaft is a tube on one or two of them transmitting power from the transmission or the transfer case in 4 wheel drive models to the differential with universal joints at the two ends and in the center for two part driveshafts. Single piece driveshafts have splined yoke at front to slide in the transmission housing for accommodating suspension movements; there is an oil seal to avoid leakage of fluids and dust; if leakage is observed the seal must be replaced. Two-piece driveshafts employ a slip joint at the forward end of the rear extension and comes with a support bearing that is a pre-lubricated ball type bearing provided in a rubber cradle. In general, driveshaft assemblies need little service, and universal joints are permanently lubricated and must be changed if there is a problem Removal is usually from the car. It is important that the driveshaft should not be covered with fats and dust to make it balanced so whenever disassembled, it must be placed again to the right side. Malfunctions in the driveshaft are characterised by noises or vibrations that occur when driving, therefore necessitating a road test. For inspection the rear of the vehicle should be raised and supported safely and then inspected for any dents or cracks in the driveshaft tubing in which case the driveshaft tubing will have to be replaced. Front or rear leakage means seal defects possible, and rotating rear wheel reveals proper functioning of universal joints, noises from centre bearing. One can also check the universal joint while the car is not in motion by trying to twist it; in case it is possible to twist it, then this is a sign of wear. Also the mounting bolts for the driveshaft should be checked to see that they are still tight. On the 4WD models, similar examinations should be done on the front driveshaft and in particular, examine the grease leakage around the sleeve yoke and where the driveshafts connected to the transfer case and front differential; also check the front driveaxles for looseness and front rubber boot s and the axle ends for any grease/oil leakage.

The driveshaft in the model is a tube running from the transmission to the rear end of the car and containing universal joints at both ends so that it can deliver power to the rear wheels regardless of the angles. It has a split yoke in the front, which engages into the extension housing of the transmission so that it can move back and forth as required during its use. An oil seal seals the compartment additionally and acts as a barrier to prevent the leakage of the fluid as well as the entry of contaminants into the transmission. Engine drive shaft does not require much maintenance as the joints are of type universal joints and are lubricated for life and are considered for replacement only if certain problems surface compelling the removal of the whole assembly from the car. The balance of the driveshaft must be preserved, and so it has to not be covered with undercoating or mud and has to be checked for damage as well as the proper attachment of the balancing weights each time it is to be removed. Problems associated with the driveshaft are generally heralded by noises or vibration feel while the car is in motion, which can be establish through a road test to pinpoint if the root cause is the driveshaft or another part. Forcing an engine speed during the test also navigates to the root of the problem, and if the noise, or the vibration, is reduced when the transmission is in different gears, the driveshaft may not be the problem. Regarding checking for worn universal joints the first symptom is a clunking noise heard while coasting, say from a stop sign and accelerating to proceed; the second is abnormal driveline noise while coasting in Neutral. Furthermore, if the vehicle is jacked and the driveshaft is rotated while examining the universal joints for end play is another method of determining the wear level.

A press or large vise will be needed for this procedure and it may be to the persons benefit to take the driveshaft to a dealer or machine shop to have the universal joint replaced and it should not cost too much money. First of all, it is required to uninstall the driveshaft. Getting into the spider with small pliers, if you have the original front universal joints, be prepared to find that they have plastic injected retainer instead of the rings. When finally reassembling, it is necessary to make use of some snap-rings, which are provided with the new universal joint. Place the driveshaft in a manner whereby its axel is supported and then place it on an arbor press or use a workbench with a vise. Take a piece of pipe or any large socket of the same inside diameter over one of the bearing caps and place the other socket slightly smaller than it on the other cap. When the cap would not come out, or when only part of it sticks out, use the vise or press to force the cap out until it is approximately 0,5mm from the end of the yoke then put this cap between the jaws of the vise or large pliers and remove it gently as it could shear off easily. Take the sockets and move to the other side of the car and press the other side of the bearing cap in the same way. Coat the new universal joint bearings with grease, as indicated, by the servicing kit, or as directed on the manufacturer's instructions. Put the spider in the position in the yoke and screw only one bearing cap partially and then rotate the spider in to the cap and screw only partially the other bearing cap. Position the spider as shown in figure 16-6 and install the bearing caps without damaging the dust seals. Fit the two snap-rings and in case they fail to engage the groove strike the driveshaft yoke lightly with a hammer in order to release tension so that the snap rings can be fitted well. The same steps have also to be followed for replacement of the rear universal joint, but only half of the spider has to be pressed out because two other ends fit directly on the pinion flange with straps and bolts. Last but not the least, fits back the driveshaft and all other components that have been removed earlier.

Always purchase a universal joint service kit for your model vehicle before beginning this procedure and read through the entire process beforehand. Start by removing the driveshaft. Place the driveshaft on a bench equipped with a vise and use a small pair of pliers to remove the snap-rings from the ends of the universal joint yokes. To remove the U-joint from the driveshaft, position a piece of pipe or a large socket with an outside diameter slightly larger than one of the bearing caps over that cap, and use a smaller socket against the opposite cap to press the bearing cap out using the vise. Once the U-joint is pressed through as far as possible, grip the bearing cap with pliers to remove it. A universal joint repair kit will contain a new U-joint, seals, bearings, caps, and snap-rings, so inspect the bearing cap bores in the yokes for wear and damage; if they are too worn, the driveshaft must be replaced. Ensure the dust seals are properly located on the U-joint, then press one bearing cap into the yoke approximately 1/4-inch using a vise. Use chassis grease to hold the needle rollers in place in the caps, insert the U-joint into the partially installed bearing cap without dislodging the needle rollers, and hold the U-joint in alignment while pressing both caps into place by carefully closing the jaws of the vise. Use a socket slightly smaller in diameter than the caps to press them into the yoke, pressing in one side, installing the snap-ring, then pressing the other side to shift the U-joint assembly tight against the installed snap-ring and install the other snap-ring. Repeat these operations for the remaining two bearing caps. If the joint has been previously rebuilt, remove the snap-rings located on the inner part of each bearing cap by tapping them off with a screwdriver and hammer; if this is the first rebuild, there won't be any snap-rings, as the pressing operation will shear the molded plastic retaining material, which may require heating the U-joint over 500-degrees to melt the plastic before pressing it apart. Press out the bearing caps, remove the U-joint, and clean all plastic material from the yoke, using a small punch to clear the injection holes. Reassembly follows the same process as for the outer snap-ring joint, with snap-rings located on the inner part of each bearing cap, pressing the bearing cap in until the snap-ring can be installed. If the joint is stiff after assembly, strike the yoke sharply with a hammer to spring the yoke ears and free up the joint.

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.

Before beginning the universal joint replacement procedure, it's crucial to have a universal joint service kit specific to your vehicle. First, remove the driveshaft. For the outer snap-ring type universal joint, place the driveshaft on a bench equipped with a vise. Remove the snap-rings using small pliers, then support the cross (also called a spider or trunnion) 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, grip the bearing cup with locking pliers, and remove it. A universal joint repair kit will provide new components like a trunnion, seals, bearings, cups, and snap-rings. Inspect the bearing cup housing in the driveshaft for wear and damage; if it's too worn, the driveshaft will require replacement. Ensure the dust seals are correctly positioned on the trunnion. Using a vise, press one bearing cup into the yoke about 1/4-inch, use grease to keep the needle rollers in place, insert the trunnion into the partially installed bearing cup, insert the needle bearings into the opposite cup, and press both cups into place using a slightly smaller socket. Install the snap-rings to secure the cups. For the injected plastic (inner snap-ring) type, if the joint has been previously rebuilt, remove the snap-rings located on the inner part of each bearing cup. For first-time rebuilding, it won't be necessary to remove the snap-rings; the pressing operation will shear the molded plastic retaining material. Press out the bearing cups, remove the trunnion (cross), and clean all plastic material from the yoke. Reassembly is similar to the outer snap-ring joint, but the snap-rings are on the inner part of each bearing cup. When installing the bearing cup, press it in until the snap-ring can be installed, and if needed, strike the yoke with a hammer to allow the snap-ring groove to move into position.

A drive shaft is a tube or set of tubes that transfers power between either the transmission or the transfer case on 4WD models and the differential. Universal joints are positioned at each end of the driveshaft as well as in the center of two-piece driveshafts. On 2WD models, their driveshafts have a front splined yoke that slips into the transmission extension housing so that their length can increase and decrease. An oil seal prevents leakage at this point. Driveshafts on 4WD models tend to come with a splined yoke / companion flange at the transfer case end while two-piece driveshafts typically sport a slip joint at the front of the rear section. Center bearings carry the driveline when two-piece driveshafts are used. It's not often you need to service a drive shaft assembly but if anything goes wrong, replace worn universal joints since they have had to be greased for life. The drivshaft must be cleaned and checked for damage whenever lifting vehciles during servicing, ensuring that small weights used in balancing it do not detach. In most instances, noise or vibration when driving signifies trouble in the drivshaft whereas road testing can clarify whether this is right.

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.

A driveshaft is a tube that transmits power between the transmission or transfer case on 4WD models and the differential, there are universal joints at the two rear ends of the rear driveshaft, and at the front part of the front driveshaft. The front of the driveshaft is provided with a splined yoke to be fitted into the extension housing of the transmission or the transfer case and any change in length due to movements of the suspension during the operation of the car is taken care by the forward and aft movement of this yoke which needs to slide along the length of the containing housing and the rear end is sealed with an oil seal to avoid any leakage of the fluid used in the case The driveshaft assembly virtually has no service interval, as the universal joints are lubricated for the life of the shaft and joint; however, if there is a problem, the shaft has to be removed from the vehicle. The driveshaft should not be covered with undercoating or mud, and should be cleaned and checked for damage when the vehicle is being serviced, while the small weights used for balancing should be checked for integrity and security; during reinstallation the proper position should be maintained for balance. The driveshaft problems generate a noise or vibration during operation, and as a result, require a road test to differentiate with other driveline problems that lead to inspection of the driveshaft. To examine, lift the rear of the car and put it on two jackstands, turn the wheels in the front to lock them. It pays to visually try to check on the driveshaft for any dents or cracks-either of these found then the driveshaft has to be replaced. At the two ends, a shaft should be checked for leakage internally where it merges with the transmission or the transfer case shows a damaged seal while leakage at the differential part shows a pinion seal damage. Having an assistant supporting a rear wheel, run the rear wheel turning a while and insure the universal joints move without binding, noise or looseness or in attempting to twist the joint between your fingers and thumb after clamping the splined ends together. Furthermore, make sure that all the mounting bolts of the driveshaft are properly torqued. For 4 WD models the following checks should be made in addition: On the front driveshaft check if there is leakage around the sleeve yoke, this is a sign of yoke seal failure, also check around the area where the driveshafts connect to the transfer case and the front differential, leakage here indicates worn oil seals. Also, freed the front drive axle joint and look at rubber boots and both ends of each axle for leakage of oil or grease; if there is leakage around the axle flanges it means that the axleshaft oil seal is bad while leakage at the CV joint boots indicate a bad rubber boot.

A driveshaft is a tube or pair of tubes that transmits power between the transmission or transfer case on 4WD models and the differential. It is equipped with universal joints at either end and in the center for two-piece driveshafts. On 2WD models, the driveshaft has a splined yoke at the front that allows it to slide back and forth within the transmission, with an oil seal to prevent fluid leakage and dirt entry. For 4WD models, the driveshaft may have a splined yoke or companion flange at the transfer case end, and two-piece driveshafts usually have a slip joint at the front of the rear section. Center bearings support the driveline in two-piece driveshafts, mounted in a rubber cushion on a frame crossmember. The driveshaft requires minimal service, with the universal joints being lubricated for life and replaced if problems arise. It is important to keep the driveshaft clean and inspect it for damage, ensuring the small weights used for balancing are in place and securely attached. Any noise or vibration while driving may indicate a problem with the driveshaft, which can be verified through a road test.

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.

Start by placing it on a bench equipped with a vise. Use pliers to remove the snap-rings. Support the cross on a short piece of pipe or a large socket and press it out by closing the vise. Grip the bearing cup with locking pliers and remove it.

Insert the trunnion into the partially installed bearing cup without dislodging the needle rollers, and stick the needle bearings into the opposite cup.

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

Start by removing the driveshaft.

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

A driveshaft is a tube or pair of tubes that transmits power between the transmission and differential.