GM 25824250
Side Bearings

First raise the vehicle before removing the tire units along with the wheels and calipers and rotors need to be removed. Take out the drive pinion from the axle after removing the Differential assembly together with axle shafts. When working with 7.6 inch axles the split plate bearing puller (J22912-01) will help press the bearing off the pinion. Because of their different axle lengths, Pinion Bearing remover (J45871) needs to be placed around the Pinion Bearing while split plate bearing puller (J22912-01) must be positioned upside down around the Pinion Bearing remover before you press off the bearing combination of both tools. Apply a hammer and brass drift to remove the shim and the outer and inner Pinion Bearing cups from the axle housing. When installing the outer Pinion Bearing cup on 7.6 inch axles use the outer bearing race installer (J7817) combined with the driver handle (J8092). The rear Pinion Bearing race installer (J8611-01) works with the same driver handle for installing the outer cup on all 8.6 inch axles. Insert the inner Pinion Bearing cup through the use of the rear Pinion Bearing cup installer (J29609) for 7.6 inch axles or the Pinion Bearing cup installer (J45870) for 8.6 inch axles along with the driver handle (J8092). Install the pinion shim between the inner Pinion Bearing and the gear shoulder while using the determined selective thickness. The rear Pinion Bearing race installer (J5590) suffices for 7.6 inch axles whereas the pinion cone and side bearing installer (J24433) serves 8.6 inch axles to press the inner Pinion Bearing until the cone securely seats on the pinion shim. The pinion needs a new collapsible spacer and suitable axle lubrication before the pinion housing receives it. You should begin by adding the outer Pinion Bearing together with the new pinion oil seal and the pinion flange/yoke. Complete the rebuild by adding the Differential parts, brake components, assembling wheels with tires, followed by lubricant addition before performing the vehicle drop.

The drive Pinion Bearing replacement task for a 10.5-inch axle requires Differential side bearing installer (J 22761), flange and pulley holding tool (J 8614-01), Pinion Bearing installer (J 37624), pinion cone and side bearing installer (J 24433), split plate bearing puller (J 22912-01), rear axle pinion oil seal installer (J 44414), rear Pinion Bearing installer (J 8608), and universal driver handle - 3/4 in - 10 (J 8092) as tools. Start by elevating the vehicle to access the Differential assembly accompanied by the pinion gear bearing retainer and yoke before extracting the oil seal along with both pinion bearings and the pinion with collapsible spacer. A hydraulic press working with the split plate bearing puller (J 22912-01) will help remove the inner Pinion Bearing and both bearing cups need extraction with a hammer using a brass drift. The installation of the pinion gear starts with the pinion gear pilot bearing installed by a Differential side bearing installer (J 22761) after which the inner Pinion Bearing cup requires installation by using the Pinion Bearing installer (J 37624) with universal driver handle - 3/4 in - 10 (J 8092) then follow it with the outer Pinion Bearing cup using a rear Pinion Bearing installer (J 8608) with universal driver handle - 3/4 in - 10 (J 8092). Proceed with inner Pinion Bearing press operation using the pinion cone and side bearing installer (J 24433). Then install a new collapsible spacer followed by lubricating the pinion bearings before inserting the outer Pinion Bearing into its retainer. The rear axle pinion oil seal installer (J 44414) installs a new pinion oil seal after which the Pinion Bearing retainer receives the pinion with sealant application (GM P/N 12346004 or Canadian P/N 10953480) to the pinion yoke splines before alignment and installation. Apply torque to the pinion nut using while holding both the flange and pulley holding tool (J 8614-01) until the pinion end play reaches the desired limitation while performing constant pinion rotation during tightening. When the flange and pulley holding tool (J 8614-01) is removed, install either the original shim or a 0.41 mm high (0.016 inch) shim when the original shim is not available before attaching the pinion gear bearing retainer to the axle housing while tightening the retainer bolts to 88 nm (65 ft. Lbs.). The rotating torque measurement of the pinion should range from 1.0 to 2.3 nm and 1.7 to 3.4 nm (10 to 20 inch lbs and 15 to 30 inch lbs) depending on whether you work with used or new bearings. Use the flange and pulley holding tool (J 8614-01) to tighten the pinion nut while checking torque values until reaching proper specifications. When you achieve the predefined torque you must repeatedly rotate the pinion spindle to allow bearing proper seating followed by torque check and optional adjustments. The procedure ends by re-installing the Differential assembly while making preload adjustments on the side bearings and determining and installing the appropriate drive pinion shim thickness before setting backlash and filling the axle with lubricant before lowering the vehicle.

The first step to replace drive pinion bearings in 8.6 9.5 or 11.5 inch axles is to elevate and stabilize the vehicle. First remove the Differential assembly before taking out the drive pinion from the axle. To disassemble the drive pinion from 8.6 inch axles you should employ the dt 47688 (Pinion Bearing Remover) paired with a press tool. The j 22912 (Bearing Remover) together with a press should be used to remove the Differential Pinion Bearing from vehicles that have the 9.5 ld inch axle. Separate the shim while using a hammer along with a brass drift to extract the outer and inner Pinion Bearing cups from the housing of the axle. Use j 8611-01 (Pinion Bearing Cup Installer) for the 8.6 inch axle in conjunction with j 7818 (Inner Bearing Race Installer) for the 9.5/9.5ld inch axle to mount the outer Pinion Bearing cup while the j 45870 (Inner Pinion Bearing Race Installer) for the 8.6 inch axle must be combined with j 22306 (Bearing Race Installer) for the 9.5/9.5ld inch axle to assemble the inner Pinion Bearing cup. Select the correct drive pinion shim along with placement of this shim onto the Differential pinion gear shoulder. The bearing needs pressing onto the pinion shim until the cone seats before you can install it with a j 22828 (Input Shaft Gear Installer) or a j 36614 (Inner Pinion Bearing Installer). A new collapsible spacer should be installed before the pinion bearings receive an application of factory-specified axle lubricant. The installation of the axle housing outer Pinion Bearing initiates before setting the Differential pinion gear. First replace the old pinion nut with a new one before installing the new Differential pinion oil seal together with the flange/yoke along with the new nut and washer. The rotating torque measurement of the pinion should be in the range of 1.0-2.3 nm (10-20 lb in) for used bearings or 1.7-3.4 nm (15-30 lb in) for new bearings. The procedure calls for adding small increments to pinion nut torque until you meet the specified measurement range. Test the pinions' rotation several times before a second evaluation of the rotating torque and re-correction if needed. Install the Differential assembly after lubricating the axle with proper fluid before completing the process by lowering the vehicle.

These tools are necessary to service and repair Differential side bearings for all types except the 9.75 inch axle: service and repair of Differential side bearings need the tools j8092 universal driver handle (J8092), j21784 side bearing installer (J21784), j22888-d side bearing remover kit (J22888-D), j29710 Differential side bearing installer (J29710), and j36597 side bearing puller pilot - 9.25 inch (J36597). J8092 universal driver handle (J8092), j21784 side bearing installer (J21784), j22888-d side bearing remover kit (J22888-D), j29710 Differential side bearing installer (J29710), and j36597 side bearing puller pilot - 9.25 inch (J36597). Start by taking out the Differential assembly from the vehicle. The 8.6 inch and 9.5 inch axle Differential assembly must be placed in a vise for installation. Before you secure the Differential case with a vise for the 10.5 inch axle you must first place a block of wood on both its sides. Use the j22888-20a together with the j8107-4 if you have the 8.6 inch axle but move to the j36597 for 9.5 inch and 10.5 inch axles to extract Differential side bearings with the j22888-20a. Once the bearings are removed from the vise you should remove the Differential assembly. The j8107-4 for 8.6 inch axles or the j36597 for 9.5 inch or 10.5 inch axles should be installed on the exact side of the Differential case that will not receive bearings. Install first the j21784 for the 8.6 inch axle followed by the j29710 for the 9.5 inch or 10.5 inch axle and the j8092 on top of the Differential case bearing. Drive the bearing onto the case through the combination of the j21784 or j29710 with j8092. After this step, replace the Differential assembly.

To replace the drive pinion bearings on 8.6, 9.5/9.5ld, and 11.5 inch axles, the following tools are required: j 7818 (Inner Bearing Race Installer, 9.5/9.5LD inch axle), j 8092 (Driver Handle ¾ in - 10), j 8608 (Rear Pinion Bearing Race Installer, 8.6 inch, 11.5 inch axle), j 8611-01 (Rear Pinion Bearing Race Installer), j 8614-01 (Flange and Pulley Holding Tool), j 22306 (Pinion Cup Bearing Installer - Rear, 9.5/9.5LD inch axle), j 22388 (Rear Axle Pinion Oil Seal Installer, 8.6 inch, 9.5/9.5LD inch axle), j 22912-b (Split Plate Bearing Puller), j 24433 (Pinion Cone and Side Bearing Installer, 8.6 inch axle), j 36614 (Inner Pinion Bearing Installer, 9.5/9.5LD inch axle), j 44412 (Pinion Bearing Installer, 11.5 inch axle), j 44414 (Rear Axle Pinion Oil Seal Installer, 11.5 inch axle), and j 45871 (Pinion Bearing Remover), j 45870 (Pinion Bearing Cup Installer, 8.6 inch axle). Start by lifting the vehicle followed by Differential and drive pinion removal from the axle. When removing pinion bearings from an 8.6 inch axle setup, administrators should install the j 45871 around the bearing and then place the j 22912-b upside down on top of the j 45871. This configuration will enable bearing removal through a press. You should use the j 22912-b to press off bearings from both the 9.5/9.5ld inch and 11.5 inch axles. The axle housing gets its outer and inner Pinion Bearing cups together with the shim removed using a hammer and brass drift. Install the outer Pinion Bearing cup using the j 8611-01, j 7818 or j 8608 and j 8092 and use j 45870, j 22306 or j 44417 with j 8092 for the inner Pinion Bearing cup installation. Place the imposed shim selection on the inner Pinion Bearing until it rests against the gear shoulder. Install these tools in sequence to fit the inner Pinion Bearing: j 24433, j 36614 and j 44412. The installation processes also require new collapsible spacers combined with Pinion Bearing lubrication followed by use of these tools to finish installation. The outer Pinion Bearing must be installed into the axle housing before adding a new pinion oil seal through use of j 22388 or j 44414. Position the pinion inside the axle housing before adding sealant to the pinion yoke splines and inserting the pinion yoke while maintaining the same marks created during removal. First position the pinion yoke onto its shaft before placing a new washer below a fresh pinion nut. Holding the pinion yoke with the j 8614-01 tool while tightening the pinion nut allows technicians to measure the resulting pinion torque before and after the pinion end play is just taken up. Follow up by growing the pinion nut torque in small intervals until the proper specification is met. Prior to installing the Differential and filling the axle with lubricant, users must check the pinion torque and spin the pinion multiple times while confirming that the bearings are seated correctly.

Vehicle quality depends on properly replacing the drive pinion bearings according to this procedure. Start by elevating the vehicle then stripping the Differential assembly with the drive pinion from the axle housing. The Pinion Bearing remover (J 45871) should be installed first on the Pinion Bearing before using the split-plate bearing puller (J 22912-01) placed upside down around the j 45871 to force the bearing off the pinion. Use a combination of a hammer with brass drift and extract both outer and inner Pinion Bearing cups from the axle housing until they are completely removed. Install the outer Pinion Bearing cup through the combination of rear Pinion Bearing race installer (J 8611-01) and universal driver handle (J 8092) setup followed by using rear Pinion Bearing race installer (J 8608) together with j 8092 for installing the inner cup. The selective shim installation must occur after inserting it between the inner Pinion Bearing along with the gear shoulder. Fit the inner Pinion Bearing into position with the pinion cone and side bearing installer (J 24433) until the cone rests on top of the selected shim followed by a new collapsible spacer. Insert the pinion axle into the housing until settling behind the outer bearing cup and new oil seal through the use of the extension housing oil pump/seal installer (J 38694). Before installing the pinion yoke sealant (GM P/N 12346004 or Canadian P/N 10953480) should be applied to the splines. After that the yoke should be aligned based on removal marks before seating with a soft-faced hammer. The flange and pulley holding tool (J 8614-01) must be used to tighten the nut while you rotate the pinion to achieve proper bearing seating as end play reaches the point where it is just taken up. Measure the torque while rotating with an inch-pound torque wrench until it reaches a torque range of 1.0 - 2.3 nm for utilized bearings or 1.7 - 3.4 nm for fresh bearings. After torque has reached specs reuse the pinion nut in small adjustments until the torque limit is met then move the pinion several times to guarantee bearing seating. Proceed by putting back the Differential assembly and brake components, tire assemblies and lubricating the axle while lowering the vehicle.

First raise the vehicle before removing the tire units along with the wheels and calipers and rotors need to be removed. Take out the drive pinion from the axle after removing the Differential assembly together with axle shafts. When working with 7.6 inch axles the split plate bearing puller (J22912-01) will help press the bearing off the pinion. Because of their different axle lengths, Pinion Bearing remover (J45871) needs to be placed around the Pinion Bearing while split plate bearing puller (J22912-01) must be positioned upside down around the Pinion Bearing remover before you press off the bearing combination of both tools. Apply a hammer and brass drift to remove the shim and the outer and inner Pinion Bearing cups from the axle housing. When installing the outer Pinion Bearing cup on 7.6 inch axles use the outer bearing race installer (J7817) combined with the driver handle (J8092). The rear Pinion Bearing race installer (J8611-01) works with the same driver handle for installing the outer cup on all 8.6 inch axles. Insert the inner Pinion Bearing cup through the use of the rear Pinion Bearing cup installer (J29609) for 7.6 inch axles or the Pinion Bearing cup installer (J45870) for 8.6 inch axles along with the driver handle (J8092). Install the pinion shim between the inner Pinion Bearing and the gear shoulder while using the determined selective thickness. The rear Pinion Bearing race installer (J5590) suffices for 7.6 inch axles whereas the pinion cone and side bearing installer (J24433) serves 8.6 inch axles to press the inner Pinion Bearing until the cone securely seats on the pinion shim. The pinion needs a new collapsible spacer and suitable axle lubrication before the pinion housing receives it. You should begin by adding the outer Pinion Bearing together with the new pinion oil seal and the pinion flange/yoke. Complete the rebuild by adding the Differential parts, brake components, assembling wheels with tires, followed by lubricant addition before performing the vehicle drop.

The vehicle needs to be raised before starting replacement of drive pinion bearings. The Differential carrier assembly should be removed together with the drive pinion from the axle. You should utilize the split-plate bearing puller (J 22912-B) to drive the bearing off from the pinion. A hammer and brass drift should remove the shim while you extract both inner and outer Pinion Bearing cups from the axle housing. The installation requires the outer bearing race installer (J 7817) with the universal driver handle (J 8092) for the outer Pinion Bearing cup while the rear Pinion Bearing cup installer (J 29609) with the universal driver handle (J 8092) must be used for the inner Pinion Bearing cup. Use the selective shim thickness to position it between the shoulder on the gear and the inner Pinion Bearing. Position the Pinion Bearing race installer - rear (J 5590) onto the inner Pinion Bearing and rotate it until the cone rests on the pinion shim before placing a new collapsible spacer. The proper axle lubricant should be applied to pinion bearings before pinion installation inside the axle housing. The axle pinion oil seal installer (J 21128) should be used for installing both the outer Pinion Bearing and new pinion oil seal to the pinion. Install the pinion yoke onto the pinion shaft so the splines receive gm p/n 12346004 (Canadian P/N 10953480) sealant and position it according to the removal marks. The pinion yoke must be tapped gently using a soft-faced hammer until pinion shaft threads become visible through the yoke. Use the flange and pulley holding tool (J 8614-01) to hold the pinion yoke when torquing the new pinion nut until the pinion end play absorption occurs. A proper rotating torque measurement of the pinion needs an inch-pound torque wrench following used or new bearing specifications. You can accomplish the correct torque by making small tightenments to the pinion nut when needed. The achievement of specified torque demands two successive pinion rotations for validating bearing seating before rechecking and adjusting rotary torque if required. Next replace the Differential carrier assembly before lowering the vehicle.

Apply sealant GM P/N 12346004 (Canadian P/N 10953480) to the splines of the pinion yoke.

Use J 8614-01 to hold the pinion yoke while tightening the nut until the pinion end play is just taken up.

Reinstall the differential assembly, fill the axle with the appropriate lubricant, and lower the vehicle.

Use the J 22828 (Input Shaft Gear Installer) or the J 36614 (Inner Pinion Bearing Installer) and a hammer until it seats on the drive pinion shim.

Determine the shim thickness and preload for the differential assembly. Protect the differential case by installing the J8107-3 on the side opposite the bearing installation, then install the inboard shims and the differential side bearing.

Reinstall the differential assembly, fill the axle with the appropriate lubricant, and finally lower the vehicle.

Begin by raising the vehicle and removing the differential assembly and drive pinion from the axle.

Use the J 45870 for the 8.6 inch axle or J 22306 for the 9.5 inch axle along with J 8092.

The required tools are: J22888-D Side Bearing Remover Kit, J24430 Differential Side Bearing Installer, J36597 Side Bearing Puller Pilot - 9.25 inch, J45711 Differential Side Bearing Remover - Dana 248, J45900 Differential Side Bearing Installer - Dana Axles, and J8092 Universal Driver Handle - 3/4 inch - 10.

If the torque is below specifications, continue tightening the pinion nut in small increments until the correct torque is achieved.

Use the Outer Bearing Race Installer (J 7817) and the Universal Driver Handle (J 8092) to install the outer pinion bearing cup.

Use the J 7817 to install the outer pinion bearing cup and the J 8608 for the inner cup, utilizing the J 8092 for both.

Protect the differential case by placing the J8107-2 or J8107-4 on the side opposite the bearing installation.

Begin by removing the differential assembly and securing it in a vise.

Remove the differential assembly and then the differential drive pinion gear from the axle.

The differential assembly and the differential drive pinion gear.

Use the J 45703 for the 9.75 inch axle or the J 45706 for the 10.5 inch axle along with the J 42176.

Use the J 22888-20A and J 8107-2 to remove the differential side bearings with the J 22888-20A.

Continue tightening the pinion nut incrementally until the correct torque is achieved.

Protect the differential case by placing the J8107-4 for the 3.6 inch axle, J36597 for the 9.75 inch axle, or J8107-3 for the 10.5 inch axle on the side opposite the bearing installation. Position the bearing on top of the differential case, then install the differential side bearing onto the differential case by attaching one of the side bearing installers to the J8092 and placing it over the differential side bearing.

Measure the rotating torque of the pinion with an inch-pound torque wrench.

Place the J 8107-4 on the side opposite the bearing installation to protect the differential case.

After removing the differential assembly from the vise, install the J45711 and the J36597, then remove the differential side bearing using the J45711 and a hydraulic press.

Remove the differential side bearing cage and roller bearings from the inner bearing race, then extract the inner bearing race from the differential assembly using a method that will not damage the differential case.

The Rear Pinion Bearing Race Installer (J 8611-01) and the Universal Driver Handle (J 8092).

Take the differential assembly out of the vise.

Install a new collapsible spacer and lubricate the pinion bearings.

Place the oil deflector into the inner pinion cup bore, then install the inner pinion bearing cup using the Pinion Bearing Race Installer - Dana 248 (J45704) and Universal Drive Handle - 3/4 inch - 10 (J8092).

J 22912-B (Bearing Remove).

Remove the J 8614-01, install the original shim or a 0.41 mm shim if the original is unavailable, and attach the pinion gear bearing retainer to the axle housing, tightening the bolts to 88 Nm (65 ft. lbs.).

Raise the vehicle and remove the differential assembly, followed by the drive pinion from the axle.

The required tools are: J 22536 Pinion Driver, J 22912-01 Split-Plate Bearing Puller, J 42176 Universal Driver Handle - Non-Threaded, J 45703 Pinion Bearing Race Remover - Dana 248, J 45704 Pinion Bearing Race Installer - Dana 248, J 45705 Pinion Bearing Race Remover - Dana 248/267, J 7818 Inner Bearing Race Installer, and J 8092 Universal Drive Handle - ¾ in - 10.

Use the J 8611-01 or J 7818 for the outer pinion bearing cup and the J 45870 or J 22306 for the inner pinion bearing cup, along with the J 8092.

Use the J 22912-01 and a hydraulic press.

Continue tightening the pinion nut in small increments until the correct torque is achieved.

Recheck the torque and adjust if necessary.

Drive the bearing onto the differential case using the appropriate installer and the J8092, then complete the installation by securing the differential assembly.

Start with the pinion gear pilot bearing using the Differential Side Bearing Installer (J 22761).

Continue to tighten the pinion nut in small increments until the correct torque is achieved, then rotate the pinion several times to ensure the bearings are seated and recheck the torque.

Use the J 37624 (Pinion Bearing Installer) and the J 8092.

Install J 45871 around the pinion bearing and J 22912-B in an inverted position around J 45871, then press the bearing off using both tools.

Continue tightening the pinion nut in small increments until the correct torque is achieved.

Begin by removing the differential and securing the differential assembly in a vise.

Use the J8614-01 to hold the pinion yoke while tightening the nut until the pinion end play is just taken up.

Install the outer pinion bearing cup with the J 8611-01 and J 8092, and the inner pinion bearing cup with the J 45900 and J 8092.

The required tools are J 7817, J 8092, J 8608, J 8611-01, J 8614-01, J 22912-B, J 24433, J 33782, and J 38694.

Take out the drive pinion and press the bearing off using the Split-Plate Bearing Puller (J 22912-B).

Use the J 24433 (Pinion Cone and Side Bearing Installer) to install the inner pinion bearing until it seats on the shim.

Use the J 22888-20A and J 8107-4 to cover the differential case side bearing bore.

Tighten the bolts to 88 Nm (65 lb ft).

1.0-2.3 Nm (10-20 lb in) for used bearings and 1.7-3.4 Nm (15-30 lb in) for new bearings.

Drive the bearing onto the differential case using the appropriate installer and the J8092, then complete the installation by securing the differential assembly.

Determine the thickness of the selective pinion shim and pinion preload shim for the drive pinion.

Secure the differential assembly in a vise, then install the J22888-20A and either the J8107-4 for the 8.6 inch axle or the J8107-3 for the 10.5 inch axle, and remove the differential side bearing using the J22888-20A.

Apply sealant to the splines of the pinion yoke, install the pinion yoke, aligning the marks made during removal, and seat it by tapping with a soft-faced hammer.

Use a hammer and brass drift to work the outer and inner pinion bearing cups out evenly.

Use the J 22912-B and a hydraulic press to remove the inner pinion bearing from the pinion, ensuring to insert a brass drift in the slots to evenly work the bearing cup out.

The rotating torque should be between 1.0-2.3 N.m (10-20 lb in) for used bearings or 1.7-3.4 N.m (15-30 lb in) for new bearings.

Use the J 24433 or J 36614 to install the inner pinion bearing, ensuring it seats on the pinion shim.

1.0-2.3 N.m (10-20 lb in).

Use the Rear Pinion Bearing Race Installer (J5590).

Begin by raising the vehicle and removing the differential assembly.

A hammer and brass drift.

Measure the rotating torque of the pinion, ensuring it falls within the specified range, and make adjustments as necessary.

The required tools are: J 7818, J 8092, J 8608, J 8614-01, J 22306, J 22388, J 22912-01, J 24433, J 36614, J 44412, J 44414, J 44417, J 45871, and J 45900.

Use a hammer and brass drift, working evenly from side to side.

Hand-start each bolt to ensure proper alignment, and then tighten them alternately to 120 Nm (89 lb ft).

Begin by raising the vehicle and removing the differential assembly, followed by the pinion yoke and pinion oil seal.

Protect the differential case by placing the J8107-2 or J8107-4 on the side opposite the bearing installation.