Toyota 04371-30021 Bearing Kit, UNIVERS

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The universal joints on 1982 through 1986 models are not serviceable, so when they become worn, the entire Drive Shaft or intermediate shaft must be replaced as a single unit. Signs of wear in the universal joints include transmission vibration, noise during acceleration, lack of lubrication, metallic squeaking, and grating sounds as the bearings disintegrate. To check for wear, the driveshaft can be turned with one hand while holding the rear axle flange or front-half coupling, and any movement between the driveshaft and the couplings indicates considerable wear. The universal joints can also be checked by holding the shaft in one hand and turning the yoke or flange with the other, and if there is excessive axial movement, the joints should be replaced. To replace the joints, the driveshaft is removed and alignment marks are placed on each shaft yoke and flange yoke. The bearing outer races of the universal joint are tapped lightly with a ratchet extension or similar tool and hammer to relieve pressure on the snap-rings. The snap-rings are then removed using two screwdrivers, and the bearings are forced out of the yokes using two sockets. The process is repeated for the remaining bearings, and the spider journals and sleeve yoke splines are checked for damage. When reassembling, new needle bearings, dust seals, and snap-rings are used, and each grease cavity in the spiders is packed with grease. A thin coat of grease is applied to the new needle-bearing rollers and roller contact areas on the spiders. The bearings and spider are then pressed into the yokes using the vise and sockets, and snap-rings of the appropriate thickness are installed to eliminate clearance between the bearing cups and snap-rings. The axial play is checked, and if excessive, thicker snap-rings are used. Finally, the remaining universal joint(s) are assembled and the driveshafts are rejoined.