GM 26064029 Seal, Differential Drive Pinion Gear

To remove and install a differential pinion seal, first loosen the wheel lug nuts and raise the front or rear of the vehicle on jackstands. Remove the wheels and disconnect the driveshaft from the differential pinion flange. Rotate the pinion and record the torque required to rotate it. Mark the relationship of the pinion flange to the shaft and count the number of exposed threads on the shaft. Use a special tool or chain wrench to immobilize the flange and remove the pinion nut. Withdraw the flange and pry out the old seal. Install the new seal by lubricating the lips and tapping it evenly into position. Apply RTV sealant to the ends of the splines visible in the center of the flange and install the washer and a new pinion nut. Tighten the nut until the recorded number of threads are exposed and measure the torque required to rotate the pinion. Tighten the nut in small increments until it matches the recorded figure and exceeds it by 5 in-lbs. Reinstall all components and tighten all fasteners to their specified torque values.

To remove and install a differential pinion seal, first loosen the wheel lug nuts and raise the front or rear of the vehicle on jackstands. Remove the wheels and disconnect the driveshaft from the differential pinion flange. Rotate the pinion and record the torque required to rotate it. Mark the relationship of the pinion flange to the shaft and count the number of exposed threads on the shaft. Use a special tool or chain wrench to immobilize the flange and remove the pinion nut. Withdraw the flange and pry out the old seal. Install the new seal by lubricating the lips and tapping it evenly into position. Apply RTV sealant to the ends of the splines visible in the center of the flange and install the washer and a new pinion nut. Tighten the nut until the recorded number of threads are exposed and measure the torque required to rotate the pinion. Tighten the nut in small increments until it matches the recorded figure and exceeds it by 5 in-lbs. Reinstall all components and tighten all fasteners to their specified torque values.

To remove and install a differential pinion seal, first loosen the wheel lug nuts and raise the front or rear of the vehicle on jackstands. Remove the wheels and disconnect the driveshaft from the differential pinion flange. Rotate the pinion and record the torque required to rotate it. Mark the relationship of the pinion flange to the shaft and count the number of exposed threads on the shaft. Use a special tool or chain wrench to immobilize the flange and remove the pinion nut. Withdraw the flange and pry out the old seal. Install the new seal by lubricating the lips and tapping it evenly into position. Apply RTV sealant to the ends of the splines visible in the center of the flange and install the washer and a new pinion nut. Tighten the nut until the recorded number of threads are exposed and measure the torque required to rotate the pinion. Tighten the nut in small increments until it matches the recorded figure and exceeds it by 5 in-lbs. Reinstall all components and tighten all fasteners to their specified torque values.

Although you can get to the left side seal from the front also, the best way to replace the left side seal is to remove the wheel lug nuts, lift the vehicle, put it on jack stands, and remove the wheel along with the splash shield located on the front axle. Subsequently, take out the left driveaxle and carry out the same exercise by drawing the lubricant from the front differential. Mounted on the puller is the old seal, which is replaced by a new seal that is then installed using a seal driver or a slightly smaller socket with the lips of the seal lubricated with multi purpose grease. When the axleshaft has been inserted, refill the differential with the correct type of lubricant, fit the driveaxle, replace the splash shield, and bolt the wheel; slowly lower the vehicle to the ground and test. For right side seal, have to need to take out the differential and also need to drain the lubricant from the front differential. Once more, disengage the old seal with seal remover or slide hammer with an adapter, then with the seal driver or slightly smaller socket install the new seal, it is recommended you coat the lips of the seal with multipurpose grease before re installation of the differential.

To remove and install a differential pinion seal, first loosen the wheel lug nuts and raise the front or rear of the vehicle on jackstands. Remove the wheels and disconnect the driveshaft from the differential pinion flange. Rotate the pinion and record the torque required to rotate it. Mark the relationship of the pinion flange to the shaft and count the number of exposed threads on the shaft. Use a special tool or chain wrench to immobilize the flange and remove the pinion nut. Withdraw the flange and pry out the old seal. Install the new seal by lubricating the lips and tapping it evenly into position. Apply RTV sealant to the ends of the splines visible in the center of the flange and install the washer and a new pinion nut. Tighten the nut until the recorded number of threads are exposed and measure the torque required to rotate the pinion. Tighten the nut in small increments until it matches the recorded figure and exceeds it by 5 in-lbs. Reinstall all components and tighten all fasteners to their specified torque values.

It is used in both the front and rear pinion oil seal. First of all, set the vehicle on a lift or jack it up, secure it on jackstands and asymmetrically block the opposite wheels. Take off the wheels and detach the driveshaft from the pinion flange, that may be placed aside for the time being. Manually move the pinion clockwise and counter clockwise several times then use a beam-type or dial-type inch-pound torque wrench to find out the amount of torque needed to rotate the pinion and this is recorded for future use. Align the pinion flange to the shaft and then count the number of threads which are available on the shaft. A special tool or chain wrench could be used to arrest the movement of the companion flange while loosening of the self locking pinion nut. Stepping off the pinion nut and pulling out the flange is possible with the help of two-jaw puller but do not pry or hammer . Remove the old seal and dispose it as advised: using seal removal tool/large screwdriver gently. Now, the lips of the new seal has to be lubricated with wheel bearing grease so that the housing space between the seal lips were filled with it, after that , putting it into the housing neatly using seal installation tool large socket in that ensures the seal enters squarely into the housing and to the full depth. Mount the pinion flange upside-down over the coupled hub, that coincides with the marks made, then tighten the pinion nut until the flange is drawn into position without hammering. Squash a bead of RTV sealant along the external face of the splines which are seen from center of the flange to keep out oil. Mount the washer and get a new pinion nut tighten until the number of threads exposed as recommended. Turn the pinion with your fingers and measure the torque that was required to turn it to tighten the nut in small rotations until you are able to match the figure that you have recorded previously, increasing the above until you are able to turn the above a little more than the earlier recorded figure by 5 in-lbs due to the drag of a new oil seal. Lastly, reassemble all elements which have been removed during the work, and apply the backward process of, and tighten all bolts and nuts to there correct torque.

Remove the wheels.

Raise the rear of the vehicle and support it securely on jackstands. Block the front wheels to keep the vehicle from rolling off the stands.

Use a chain wrench to keep the companion flange from moving while loosening the self-locking pinion nut.

Tighten the nut carefully until the original number of threads are exposed. Measure the torque required to rotate the pinion and tighten the nut in small increments until it matches the figure recorded earlier. In order to compensate for the drag of the new oil seal, the nut should be tightened more until the rotational torque of the pinion slightly exceeds what was recorded earlier, but not by more than 5 in-lbs.

The new seal should be installed by lubricating the lips and tapping it evenly into position.

The next step is to disconnect the lower stabilizer bar link from the lower control arm.

The first step is to loosen the wheel lug nuts and raise the front or rear of the vehicle on jackstands.