GM 11505123
Side Bearings

To replace the drive pinion bearings, gather the necessary tools: j 7817 (Outer Bearing Race Installer), j 7818 (Inner Bearing Race Installer), j 8092 (Universal Driver Handle - 3/4 in - 10), j 8608 (Rear Pinion Bearing Race Installer), j 8611-01 (Rear Pinion Bearing Race Installer), j 8614-01 (Flange and Pulley Holding Tool), j 22306 (Rear Pinion Clip Bearing Installer), j 22912-b (Split-Plate Bearing Puller), j 24433 (Pinion Cone and Side Bearing Installer), j 36614 (Pinion Cone and Side Bearing Installer), j 33782 (Pinion Oil Seal Installer), j 38694 (Extension Housing Oil Pump/Seal Installer), and j 45871 (Pinion Bearing Remover). Begin the procedure by raising the vehicle before you remove Differential and drive pinion from the axle. Tool j 22912-b should be used for bearing pressing off the pinion on the 8.0 inch axle. Users should employ j 45871 positioned around the Pinion Bearing together with inverted j 22912-b around j 45871 to press off the bearing for the 8.6 inch axle. The removal process includes hammering the shim and outer and inner Pinion Bearing cups free from the housing of the axle by using a brass drift. The outer Pinion Bearing cup requires application of j 7817 for 8.0 inch axles while 8.6 inch axles use j 8611-01 and 9.5 ld inch axles use j 7818 together with j 8092. Install the inner Pinion Bearing cup of the 9.5 ld inch axle using j 8608 and j 8092 together with j 22306. Establish the required selective shim dimension before mounting it in between the inner Pinion Bearing and gear shoulder. The installation requires an inner Pinion Bearing tool j 24433 or j 36614 to set the pinion cone on its match point at the pinion shim before adding new collapsible spacers and lubricating the pinion bearings. Begin by inserting the pinion into its housing and then adding both the outer Pinion Bearing and brand-new j 33782 pinion oil seal (or J 38694 for 8.6 inch axle and J 22388 for 9.5 LD inch axle). First apply sealant gm p/n 12346004 (Canadian P/N 10953480) around the pinion yoke splines before placing the yoke onto the pinion shaft. Apply j 8614-01 against the pinion yoke to stabilize it as you torque the new pinion nut all the way to the point the pinion end play becomes minimal. Check the pinion rotating torque to verify its compliance with the used or new bearing torque specifications and correct the measurements if necessary. Install the Differential after which you should fill the axle with lubricant before lowering the vehicle.

To replace the drive pinion bearings on 8.6 and 9.5 inch axles, gather the necessary tools: j 7818 (Inner Bearing Race Installer), j 8092 (Universal Driver Handle - 3/4 in - 10), j 8611-01 (Rear Pinion Bearing Race Installer), j 8614-01 (Flange and Pulley Holding Tool), j 22306 (Rear Pinion Cup Bearing Installer), j 22912-01 (Split Plate Bearing Puller), j 24433 (Pinion Cone and Side Bearing Installer), j 36614 (Inner Pinion Bearing Installer), j 45870 (Pinion Bearing Cup Installer), and j 45871 (Pinion Bearing Remover). Start by lifting the vehicle then remove both the Differential assembly along with the drive pinion. To remove the Pinion Bearing from an 8.6 inch axle press it off with the j 45871 along with an inverted j 22912-01 around the j 45871. You should utilize the j 22912-01 to press off the bearing from the 9.5 inch axle. Install the shim together with the outer and inner Pinion Bearing cups by striking them off with a hammer and brass drift. The Pinion Bearing cup requires installation with the use of j 8611-01 for 8.6 inches and j 7818 for 9.5 inches along with j 8092. The j 45870 (8.6 inch axle) or j 22306 (9.5 inch axle) together with j 8092 enable installing the inner Pinion Bearing cup. Before inserting the inner Pinion Bearing, place the selected shim between the components and use j 24433 or j 36614 tool to drive the bearing until it rests on the shim. The technician needs to add a new collapsible spacer before applying lubrication to pinion bearings for the subsequent axle housing installation. To proceed, install the j 22388 to fit a brand new pinion oil seal and then push the pinion into the axle housing while applying sealant to the pinion yoke splines. Ask for the pinion yoke installation while keeping it in line with previous removal marks then adjust position through soft-faced hammer taps. The pinion yoke receives securement from the j 8614-01 while tightening the pinion nut until the pinion end play reaches complete utilization. Test the rotating torque of the pinion using an inch-pound torque wrench to obtain values between 1.0-2.3 nm (10-20 inch lbs.) for used or 1.7-3.4 nm (15-30 inch lbs.) for new bearings. Small steps of additional torque to the pinion nut may be needed to obtain the specified measurements then multiple rotations of the pinion will validate correct bearing seating. The final steps include replacing the Differential assembly followed by lubricant addition to the axle before lowering the vehicle.

A replacement of drive pinion bearings on 10.5-inch axles requires these specific tools: pinion oil seal installer-rear (J22388) and Differential side bearing installer (J22761) and split plate bearing puller (J22912-01) along with pinion cone and side bearing installer (J24433) and Pinion Bearing installer (J37624) and universal driver handle - 3/4 inch - 10 (J8092) combined with rear Pinion Bearing installer (J8608) and flange and pulley holding tool (J8614-01). Begin by elevating the vehicle then unfasten the Differential assembly and subsequent pinion gear bearing retainer followed by pinion yoke and oil seal. A hydraulic press and split plate bearing puller (J22912-01) will allow users to remove the outer and inner pinion bearings. Examine the bearing cups by hitting them with a hammer and brass drift. Start by mounting the pinion gear pilot bearing onto the permanent component of the Pinion Bearing assembly with j22761 Differential side bearing installer. Then use Pinion Bearing installer j37624 alongside universal driver handle j8092 to install the inner Pinion Bearing cup correctly. To install the outer Pinion Bearing cup selects the rear Pinion Bearing installer (J8608) together with universal driver handle (J8092). The process continues with installation of the inner Pinion Bearing using the pinion cone and side bearing installer (J24433) onto the pinion. After inserting a new collapsible spacer you must lubricate the bearings before placing the outer Pinion Bearing into the retainer. After installing the new pinion oil seal using the pinion oil seal installer-rear (J22388) complete the process by inserting the pinion into its bearing retainer. Use sealant gm p/n 12346004 or canadian p/n 10953480 on the pinion yoke splines before installing the yoke onto the pinion shaft through soft-faced hammer impact. Proceed to tighten the pinion nut using the flange and pulley holding tool (J8614-01) until the pinion end play reaches its limit point while twisting the pinion. Use j8614-01 flange and pulley holding tool to install either the original shim or a new shim of 0.41mm thickness when the original shim cannot be used. The axle housing must receive the pinion gear bearing retainer with its retainer bolts adjusted to 88 nm (65 ft. Lbs.) before checking the pinion rotation torque at 1.0 - 2.3 nm (10 - 20 inch lbs.) for used bearings or 1.7 - 3.4 nm (15 - 30 inch lbs.) for new bearings. The pinion nut needs additional tightening in small increments until it reaches the required torque values. Verify the specified torque on the pinion then apply several resulting movements to ensure bearing seating before rechecking the torque and making additional adjustments if required. Following this procedure involves putting the Differential assembly back in place while adjusting the Differential side bearing preload and setting the drive pinion selective shim thickness and backlash adjustment and filling the axle with lubricant and finally lowering the vehicle.

The process of drive Pinion Bearing replacement starts by suspending the vehicle then removing the Differential assembly followed by separating the drive pinion from the axle. The installer tool j45871 must surround the Pinion Bearing before adding the split-plate bearing puller j22912-01 upside down near j45871 to remove the bearing from the pinion. The shim should be removed first before extracting the inner and outer Pinion Bearing cups using a hammer along with a brass drift that ensures equal extraction. The installation of external and internal Pinion Bearing cups requires the rear Pinion Bearing race installer (J8611-01) together with the universal driver handle (J8092) and the rear Pinion Bearing race installer (J8608) also using the j8092 as an installation tool. To select the appropriate shim thickness for the pinion scan the option between the inner Pinion Bearing and the gear shoulder. Install the inner Pinion Bearing with the pinion cone and side bearing installer (J24433) until it reaches the shim stage then insert a new collapsible spacer. The required axle lubricant must be applied to both pinion bearings before installing the pinion into its position within the axle housing with the outer Pinion Bearing and new pinion oil seal through the use of the extension housing oil pump/seal installer (J38694). Apply sealant to the pinion yoke splines before inserting the yoke at its original position using the marks made during removal then seat it with a soft-faced hammer. Place the washer on top of the new pinion nut while you mount the flange and pulley holding tool (J8614-01) to the pinion yoke. Use the j8614-01 while tightening the pinion nut to achieve a just-taken-up end play for the pinion through bearing seating rotation. Test rotating torque using an inch-pound torque wrench to validate the measurement within the described tolerance limits for used or new bearings. Continue manipulating the pinion nut through few small increments until the preferred torque value is obtained before rotating the pinion multiple times for bearing seat validation. The vehicle requires reinstallation of Brake Calipers alongside brake rotors and tire and wheel assemblies along with Differential assembly and lubricant filling before lowering the vehicle.

The tool requirements for drive pinion bearings replacement on a 10.5-inch axle include j 22761 (Differential Side Bearing Installer), j 8614-01 (Flange and Pulley Holding Tool), j 37624 (Pinion Bearing Installer), j 24433 (Pinion Cone and Side Bearing Installer), j 22912-b (Split Plate Bearing Puller), j 44414 (Rear Axle Pinion Oil Seal Installer), j 8608 (Rear Pinion Bearing Installer), and j 8092 (Universal Driver Handle - 3/4 in - 10). The work starts by stretching the vehicle upward and unfastening the Differential assembly. First remove the pinion gear bearing retainer before you take out the pinion yoke and oil seal then extract the outer Pinion Bearing and pinion and collapsible spacer. The j 22912-b hydraulic press together with the j 22912-b will extract the inner Pinion Bearing from the pinion through its slots by inserting a brass drift for equal bearing cup release. To remove and replace the pinion gear pilot bearing use hammer and brass drifts with a similar process applied to both outer and inner Pinion Bearing cups. Begin Pinion Bearing installation with the j 22761 to place the pinion gear pilot bearing before applying the j 37624 with j 8092 for the inner Pinion Bearing cup and utilizing j 8608 with j 8092 for the outer Pinion Bearing cup. Start by pressing the bearing on until the cone seats on the pinion then employ the j 24433 along with a hydraulic press to install the inner Pinion Bearing which must be followed by adding the new collapsible spacer and lubricating all pinion bearings. The installation of the outer Pinion Bearing into the retainer begins before using the j 44414 to position the new pinion oil seal. First reposition the pinion inside the bearing retainer before you apply sealant to the splines of the pinion yoke and restore marks from the removal process before installing the pinion yoke. Use a soft-faced hammer to strike the yoke until several threads emerge before you install the washer together with the new pinion nut. Tighten the pinion yoke under j 8614-01 while rotating the pinion between rotations until the end play disappears fully. Replace the j 8614-01 tool with either the original bearing shim or a 0.41 mm shim in case the original shim is not accessible. Fasten the pinion gear bearing retainer onto the axle housing and proceed to tighten its retainer bolts to 88 n.m (65 lb ft). The rotating torque measurement of the pinion should fall within acceptable values for new or used bearings; adjust accordingly if needed. After completing the above steps the service professional should reinstall the Differential assembly and determine the necessary selective shim thickness for the drive pinion and also perform backlash adjustment before filling the axle with lubricant and lowering the vehicle back down.

Use the J24430 or the J45900 and the J8092 over the differential side bearing, driving it into position with the same tools.

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.

Install a new collapsible spacer, lubricate the pinion bearings, and then install the outer pinion bearing into the axle housing.

Install the differential assembly and fill the axle with the proper lubricant before removing the support and lowering the vehicle.

Ensure it is between 1.0 - 2.3 Nm (10 - 20 inch lbs.) for used bearings or 1.7 - 3.4 Nm (15 - 30 inch lbs.) for new bearings.

Insert the pinion into the bearing retainer, applying sealant (GM P/N 12346004 or Canadian P/N 10953480) to the splines of the pinion yoke before aligning and installing it.

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

Install the outer pinion bearing into the axle housing, followed by the differential pinion gear.

Use the J 44414 (Pinion Oil Seal Installer).

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

Measure the rotating torque of the pinion, ensuring it falls within the specified range for used or new bearings, and adjust as necessary.

Remove the shim and the outer and inner pinion bearing cups from the axle housing using a hammer and brass drift.

The original shim or a 0.41 mm shim if the original is unavailable.

Install the yoke and tighten the pinion nut while holding the Flange and Pulley Holding Tool (J 8614-01) until the pinion end play is just taken up.

The required tools are: Pinion Driver (J22536), Split-Plate Bearing Puller (J22912-01), Universal Driver Handle - Non-Threaded (J42176), Pinion Bearing Race Remover - Dana 248 (J45703), Pinion Bearing Race Installer - Dana 248 (J45704), Pinion Bearing Race Remover - Dana 248/267 (J45705), Inner Bearing Race Installer (J7818), and Universal Drive Handle - 3/4 inch - 10 (J8092).

Install the inner pinion bearing using either J 24433 or J 36614, followed by a new collapsible spacer and lubrication of the pinion bearings.

Use the J 24433 (Pinion Bearing Installer) and a hydraulic press.

Add a new collapsible spacer and lubricate the pinion bearings.

The required tools are: 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).

Begin by raising the vehicle and removing the differential assembly, followed by the pinion gear bearing retainer, pinion yoke, oil seal, outer pinion bearing, pinion, and collapsible spacer.

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

Apply sealant to the splines of the pinion yoke, install the yoke, and seat it onto the pinion shaft.

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

Use J 45900 for 8.6 inch axle, J 22306 for 9.5 inch axle, or J 44417 for 11.5 inch axle, along with the J 8092.

Install the inner pinion bearing using either J 24433 or J 36614, followed by a new collapsible spacer and lubrication of the pinion bearings.

Reinstall the differential and fill the axle with the proper axle lubricant before lowering the vehicle.

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

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

Install the washer and a new pinion nut, then use the J 8614-01 to hold the pinion yoke while tightening the pinion nut until the pinion end play is just taken up.

Press the inner pinion bearing using the J 24433, install a new collapsible spacer, lubricate the pinion bearings, and install the outer pinion bearing into the retainer.

Continue to tighten the pinion nut in small increments until the specified torque is achieved, then rotate the pinion several times to ensure the bearings have seated.

The required tools are: 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-B), Rear Axle Pinion Oil Seal Installer (J 44414), Rear Pinion Bearing Installer (J 8608), and Universal Driver Handle - 3/4 in - 10 (J 8092).