Toyota 37110-0C163 Propelle Shaft Assembly

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A driveshaft is a tube or a pair of tubes that transmit power between the transmission and the differential. Universal joints are located at either end of the driveshaft, and a third U-joint is employed just behind the center on two-piece driveshafts. The driveshaft is attached to the rear differential by a companion flange. On 4WD models, the front driveshaft is attached to the front differential in the same way. Driveshafts on 2WD models employ a splined yoke, known as a slip yoke or sleeve yoke, at the front, which slips into the extension housing of the transmission. This arrangement allows the driveshaft to slide back and forth within the transmission during vehicle operation. An oil seal prevents leakage of fluid at this point and keeps dirt from entering the transmission. If leakage is evident at the front of the driveshaft, replace the oil seal. On 4WD models, each driveshaft is attached to the transfer case by a companion flange. Once a front or rear driveshaft has been removed, either companion flange can be removed from the transfer case to replace the companion seal(s). On two-piece driveshafts, center bearings support the driveline. The center bearing is a ball-type bearing mounted in a rubber cushion attached to a frame crossmember. The bearing is pre-lubricated and sealed at the factory. On two-piece driveshafts, a sleeve yoke is employed in the rear driveshaft section. The driveshaft assembly requires periodic lubrication. Since the driveshaft is a balanced unit, it's important that no undercoating, mud, etc. be allowed to stay on it. When the vehicle is raised for service, it's a good idea to clean the driveshaft and inspect it for any obvious damage. Also, make sure the small weights used to originally balance the driveshaft are in place and securely attached. Whenever the driveshaft is removed, it must be reinstalled in the same relative position to preserve the balance. Problems with the driveshaft are usually indicated by a noise or vibration while driving the vehicle. A road test should verify if the problem is the driveshaft or another vehicle component. If you suspect trouble, inspect the driveline.

Look under the vehicle for grease fittings on the driveshaft universal joints and slip yokes.

Wrap a plastic bag over the transmission extension housing and hold it in place with a rubber band to prevent loss of fluid and protect against contamination while the driveshaft is out.