GM 9417784
Pinion Bearings

The necessary tools for Pinion Bearing service and Differential side bearing replacement include j8092 universal driver handle (J8092), j21784 side bearing installer (J21784), j22888-d side bearing remover kit (J22888-D), j22912-01 split-plate bearing puller (J22912-01) and j25299 side bearing installer (J25299). You should start by removing the Differential assembly then place it into a vise for security. Remove Differential side bearings by using either j8107-2 (7.6 inch axle) or j8107-4 (8.6 inch axle) together with j22888-20a. Move the Differential assembly from the vise position when the removal process completes. The j8107-2 or j8107-4 presents direct bearing installation protection to the Differential case from its opposite side. Install the Differential case bearing with both the j25299 (7.6 inch axle) and its mating part j21784 (8.6 inch axle) together with the j8092. Drive the bearing onto the case by applying the j25299 or the j21784 and j8092 tools before the Differential assembly can be rebased.

The necessary tools for Pinion Bearing service and Differential side bearing replacement include j8092 universal driver handle (J8092), j21784 side bearing installer (J21784), j22888-d side bearing remover kit (J22888-D), j22912-01 split-plate bearing puller (J22912-01) and j25299 side bearing installer (J25299). You should start by removing the Differential assembly then place it into a vise for security. Remove Differential side bearings by using either j8107-2 (7.6 inch axle) or j8107-4 (8.6 inch axle) together with j22888-20a. Move the Differential assembly from the vise position when the removal process completes. The j8107-2 or j8107-4 presents direct bearing installation protection to the Differential case from its opposite side. Install the Differential case bearing with both the j25299 (7.6 inch axle) and its mating part j21784 (8.6 inch axle) together with the j8092. Drive the bearing onto the case by applying the j25299 or the j21784 and j8092 tools before the Differential assembly can be rebased.

This to be done one requires the following tools for servicing and repair of the Differential side bearings on an 8.6-inch axle: j 22912-b split plate bearing puller, j 8092 universal driver handle - 3/4 in - 10, j 21784 side bearing installer, j 22888-d side bearing remover kit, j 29710 Differential side bearing installer, and j 44420 Differential bearing and hub seal installer. Start with the removal of the Differential assembly and clamping it in a vise. Using the j 22888-20a and j 8107-4, cover the Differential case side bearing bore and then remove the Differential side bearings with the j 22888-20a. For installation, cover the Differential case with j 8107-4 on the side where the bearing installation is being made. Mount the j 21784 and j 8092 to the Differential case bearing and drive the bearing onto the case using either j 21784 or j 29710 along with the j 8092. Finally, reinstall the Differential assembly.

The drive Pinion Bearing replacement process starts with vehicle elevation and Differential assembly and drive pinion removal from the axle. The split-plate bearing puller (J 22912-01) serves to remove the bearing from the pinion before you discard the shim. Extract both Pinion Bearing cups from the axle housing by using a hammer and brass drift to remove them in equal intervals. Install the outer Pinion Bearing cup with the outer bearing installer (J 7817) and universal driver handle (J 8092) while installing the inner Pinion Bearing cup with the rear Pinion Bearing cup installer (J 29609) together with the universal driver handle (J 8092). Secure the decided selective shim by positioning it next to the inner Pinion Bearing as it rests against the gear shoulder. The Pinion Bearing race installer tool (J 5590) should be used to install the inner Pinion Bearing until its cone seats properly on the shim while a new collapsible spacer should be placed afterward. After lubricating with proper axle lubricant apply the outer Pinion Bearing into its position inside the housing. The axle housing receives its new pinion oil seal through the pinion oil seal installer (J 33782) before insertion of the pinion shaft. Seal the pinion yoke splines with gm p/n 12346004 (Canadian P/N 10953480) or equivalent before installing the yoke to the alignment marks previously set during removal. Hardware professionals should use a soft-faced hammer to tap the pinion yoke onto the pinion shaft until a few threads become visible from the yoke before installing the washer and new pinion nut. Use the flange and pulley holding tool (J 8614-01) on the pinion yoke and steadily tighten the pinion nut while maintaining grip on the tool to achieve the required pinion end play with its just taken up position. An inch-pound torque wrench should be used for measuring pinion torque to confirm the desired reading between 1.0 - 2.3 nm (10 - 20 inch lbs.) for used bearings or between 1.7 - 3.4 nm (15 - 30 inch lbs.) for new bearings. Maintain small pinion nut tightening steps until the torque measurement reaches within the allotted specification. The specified torque value should be reached by tightening the pinion nut followed by multiple rotational movements of the pinion to allow bearing installation then additional torque measurement might require adjustments. After completing the process close the Differential assembly before adding proper lubricant and returning the vehicle to ground position.

Use J 8608 and J 8092, with J 22306 for the 9.5 LD inch axle.

Use the Split-Plate Bearing Puller (J 22912-01) to press the bearing off the pinion.

Determine the selective shim thickness and place it between the inner pinion bearing and the gear shoulder.

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

The selective spacer thickness.

First, raise and support the vehicle.

Install the Pinion Bearing Remover (J45871) around the pinion bearing and the Split Plate Bearing Puller (J22912-01) in an inverted position around the Pinion Bearing Remover, then press the bearing off using both tools.

Take the differential assembly out of the vise.

Use the Rear Pinion Bearing Cup Installer (J 29609) along with the Universal Driver Handle (J 809.2).

Install the inner pinion bearing with the J 24433 until it seats on the shim, followed by a new collapsible spacer.

The required tools are: J8092 Universal Driver Handle (J8092), J21784 Side Bearing Installer (J21784), J22888-D Side Bearing Remover Kit (J22888-D), J24430 Differential Side Bearing Installer (J24430), J36597 Side Bearing Puller Pilot - 9.25 inch (J36597), J45711 Differential Side Bearing Remover- Dana 248 (J45711), J45900 Differential Side Bearing Installer - Dana Axles (J45900), and DT46725 Side Bearing Installer (DT46725).

Install a new collapsible spacer and lubricate the pinion bearings with the appropriate axle lubricant.

Protect the differential case by placing the Universal Driver Handle (J 8092) on the side opposite the bearing installation.

Extract it with a hammer and brass drift, ensuring even removal by alternating sides.

Rotate the pinion several times to ensure proper seating of the bearings.

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

Remove the pinion preload shims, both axles, and the pinion spacer (10.5 inch axle only) from the drive pinion and set aside.

Use J21784 for the 8.6 inch axle, J24430 or J45900 for the 9.75 inch without RPO G80 or 10.5 inch axles, and DT46725 for the 9.75 inch with RPO G80.

Use the Outer Bearing Race Installer (J7817) along with the Driver Handle (J8092).

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.

Raise the vehicle and remove the differential and drive pinion from the axle.

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

Measure the rotating torque with an inch-pound torque wrench, ensuring it is within the specified range for used or new bearings.

Use the Pinion Cone and Side Bearing Installer (J 24433), pressing it until the cone seats on the pinion shim.

First, raise the vehicle.

The necessary tools are J 7817, J 7818, J 8092, J 8608, J 8611-01, J 8614-01, J 22306, J 22912-B, J 24433, J 36614, J 33782, J 38694, and J 45871.

Install a new collapsible spacer and lubricate the pinion bearings with the appropriate axle lubricant.

Use the J 22912-B to press the bearing off the pinion.

Lubricate the pinion bearings with the appropriate axle lubricant.

Rotate the pinion several times to ensure proper seating of the bearings, then install the differential carrier assembly.

Remove the shim and extract the outer and inner pinion bearing cups from the axle housing with a hammer and brass drift, ensuring even removal.

Use J21784 for the 8.6 inch axle, J24430 or J45900 for the 9.75 inch without RPO G80 or 10.5 inch axles, and DT46725 for the 9.75 inch with RPO G80.

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.

Lubricate the pinion bearings with axle lubricant.

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

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

Sealant (GM P/N 12346004 or Canadian P/N 10953480).

Install the outer pinion bearing, a new pinion oil seal, and the pinion flange/yoke.

Use either the J8107-2 (7.6 inch axle) or the J8107-4 (8.6 inch axle) along with the J22888-20A to remove the differential side bearings.

Install the outer pinion bearing into the axle housing.