Chevrolet 25843093 Rear Wheel Bearing

First, turn the rear wheel lug nuts to a loose condition, lift the rear of the vehicle, providing jackstands and position the front wheels, and take off the rear wheels. For models with disc brakes-first of all, the brake caliper with the disc is to be removed, for models equipped with drum brakes-the brake drum is to be removed. Subsequently unscrew the retaining ring and key from the end of the axle housing while the adjusting nut can be removed by a special socket. Remove the hub assembly pulling it straight up on the axle tube and take the oil seal off the back of the hub. To disassemble the hub further, strike with hammer and a long bar or drift punch to knock out the inner bearing, cup and oil seal and to remove newly inserted retaining ring knock out the outer bearing cup from the hub. Remove the old sealing compound from the seal bore of the hub and to clean the bearings, hub as well as the axle tube using solvent, although there should be no bristles from the brush stuck in the bearing rollers. Wipe the bearings with polluted solvent, then rinse the bearings with brake system cleaner, and the solvent will dry fast. Look for signs of wear on the bearings and where they mount on the axle tube flange and to the truck frame; cracks, wear, and damage on the bearings, axle tube flange, studs, and hub splines. The bearings and the point of contact of axle tube with the axle should be lubricated with wheel bearing grease, although the usage of grease pencil is prohibited. The process of reassembling of the hub is the reversal of the disassembly process here the new bearing cups should be done with the help of the proper size bearing driver. Check that the axle housing oil deflector is properly positioned; place the hub assembly on the axle tube being careful not to damage the oil seals. Place the adjusting nut and turn the bearings and the hub by trying to rotate the bearings, then using a torque wrench tighten the adjusting nut to 50 ft-lbs then turn the adjusting nut 1/4 turn anticlockwise then tighten again by hand only. Ensure the nominated slot of the nut matches with the key way of the spindle, place key in place followed by the retainring key in the end of the spindle. Though the hub assembly could be periodically rotated to test for play or lash between the hub and spindle, there is no preload or freeplay. Last but not the least, it is installing the axleshaft and then lowering the vehicle again.

To remove and install components in the front differential of selectable 4WD systems, first, loosen the wheel lug nuts and raise the vehicle securely on jackstands. Remove the right front wheel and the differential carrier splash shield if equipped. Drain the lubricant from the front differential. For 4WD systems, unbolt the right driveaxle from the axleshaft flange and support it out of the way. Remove the front axle shift motor and, if applicable, disconnect the front stabilizer link or remove the front shock absorber/coil spring assembly. On 2500/3500 models, remove the front axle bracket bolts and slide the bracket forward for additional clearance. Support the differential carrier with a floor jack and block of wood. Remove the bolts securing the axle tube to the differential carrier and the nuts attaching the tube to its support bracket. Carefully remove the output shaft tube, ensuring no components fall out. Mount the tube in a vise and remove the internal components. Measure and remove the axleshaft bearing using a slide hammer and bearing remover attachment. For installation, install the bearing to the original depth using a bearing driver or socket, then install a new seal and deflector, lubricating the seal lips with grease. Carefully drive in the axleshaft, followed by the internal components. Apply RTV sealant to the tube-to-differential housing mating surface, and install the tube assembly, tightening bolts and nuts to specified torques. Reinstall the driveaxle, front axle shift motor, and fill the differential with lubricant. For AWD systems, remove the stabilizer bar link and, if applicable, the front shock absorber. Unbolt the right driveaxle from the axleshaft flange, supporting it properly. Support the differential carrier with a floor jack and a block of wood. Remove nuts attaching the axle shaft to its support bracket and the bolts securing the axle shaft flange to the differential carrier. Use a brass punch and hammer to separate the axle shaft from the differential case side gear. Remove the inner axle shaft assembly and axle shaft. Replace the inner seal and bearing with a special tool, then apply RTV sealant to the differential sealing surface and install the inner axle shaft housing assembly. Install the axle shaft to the support bracket and align the splines with the differential side gear. Tap the axle shaft with a mallet until the ring (clip) aligns with the groove in the differential case side gear. Install the axle shaft to the inner flange and tighten the bolts. Reinstall the stabilizer link, fill the differential with lubricant, install the differential carrier splash shield, and finally, install the wheel and lug nuts. Lower the vehicle, tighten the lug nuts, and check for proper operation.

Clean out the bearing recess.

After removing the wheel, remove the brake caliper, ensuring not to depress the brake pedal while the caliper is removed.

1. Loosen the wheel lug nuts. 2. Raise the vehicle. 3. Place it securely on jackstands. 4. Remove the left front wheel. 5. Remove the differential carrier splash shield from under the front axle. 6. Remove the left driveaxle. 7. Drain the lubricant from the front differential. 8. Pull the left axle shaft out with a slide hammer and adapter. 9. Remove the deflector and seal from the differential. 10. Remove the bearing using a slide hammer and bearing remover attachment.

The first step is to remove the axleshaft and oil seal.

To remove and install components in the front differential for AWD systems, follow these steps: Remove the stabilizer bar link and, if applicable, the front shock absorber. Unbolt the right driveaxle from the axleshaft flange, supporting it properly. Support the differential carrier with a floor jack and a block of wood. Remove nuts attaching the axle shaft to its support bracket and the bolts securing the axle shaft flange to the differential carrier. Use a brass punch and hammer to separate the axle shaft from the differential case side gear. Remove the inner axle shaft assembly and axle shaft. Replace the inner seal and bearing with a special tool, then apply RTV sealant to the differential sealing surface and install the inner axle shaft housing assembly. Install the axle shaft to the support bracket and align the splines with the differential side gear. Tap the axle shaft with a mallet until the ring (clip) aligns with the groove in the differential case side gear. Install the axle shaft to the inner flange and tighten the bolts. Reinstall the stabilizer link, fill the differential with lubricant, install the differential carrier splash shield, and finally, install the wheel and lug nuts. Lower the vehicle, tighten the lug nuts, and check for proper operation.

The new bearing can be installed using a bearing installer or a piece of pipe against the outer race.

Install the driveaxle/hub nut and tighten it to the torque specifications.

The initial steps are to remove the axleshaft and rear wheels.

After removing the hub assembly, the oil seal should be discarded.

1. Loosen the wheel lug nuts. 2. Raise the vehicle. 3. Place it securely on jackstands. 4. Remove the left front wheel. 5. Remove the differential carrier splash shield from under the front axle. 6. Remove the left driveaxle. 7. Drain the lubricant from the front differential. 8. Pull the left axle shaft out with a slide hammer and adapter. 9. Remove the deflector and seal from the differential. 10. Remove the bearing using a slide hammer and bearing remover attachment.

Remove the hub retaining bolts from the steering knuckle and remove the disc shield.