Why does the drive yoke slide when flexing?
The yoke slides over the splines of the transmission’s output shaft. The reason this is done is to allow the driveshaft to “change sizes” during flex. The driveshaft will be able to slide back and forth on these splines to keep from binding, while effectively being able to apply power.
What should the U-joint angle be on a drive shaft?
By using U-joints in pairs and in phase, and the angle between the driveshaft and the equipment at both ends is the same, the acceleration/deceleration cycles tend to cancel each other. These U-joint angles should always be at least 1-degree to avoid wearing out the yoke bearings.
What does it mean when your drive shaft does not rotate?
Universal Joint Movement – If the U-joint of your drive shaft rotates too fast or fails to rotate, then it’s a problem with your drive shaft. The cap seals of the bearings could have rust on them. Either that or the u-joint itself is not stable.
What causes the rear end differential yoke to run out?
Sometimes this yoke run-out problem can be improved by rotating the U-joint 180-degrees in the rear end differential yoke. Driveshaft-related vibrations usually occur at roughly engine speed in high gear. Wheel/axle vibrations usually occur at 1/3 rd engine speed or driveshaft speed because of the differential gearing.
How are driveshafts attached to center support bearings?
The two driveshaft’s that attach in the center support bearings are attached on opposite sides of the vehicle as well. The front drive shaft is attached to the output shaft coming out of the transmission, while the rear driveshaft’s propeller shaft is attached to the yoke that comes out of the rear axle differential.
What happens when a drive support bearing fails?
A failed bearing is unable to support the driveshaft, and as a result the driveshaft will flex, causing a vibration and shuttering sensation that can be felt throughout the vehicle when it’s broken.
Universal Joint Movement – If the U-joint of your drive shaft rotates too fast or fails to rotate, then it’s a problem with your drive shaft. The cap seals of the bearings could have rust on them. Either that or the u-joint itself is not stable.
How do you remove a front drive support bearing?
The front driveshaft is going to be attached solid inside the output shaft supports. In order to remove the driveshaft, you’ll need a rubber or plastic tipped hammer. On the front of the driveshaft is a welding mark that is solid and is the best place to hit with the hammer to loosen the driveshaft.