OEM GMC Sierra 3500 Classic Differential Seal

GMC Sierra 3500 Classic Differential Seal Parts Questions & Experts Answers

• Pinion Seal, Front
  23270117
  Q: How to replace the Differential Seal in the drive pinion housing on GMC Sierra 3500 Classic?

  A: To replace the drive pinion housing or seal, all you will need is the following tools: pinion seal installer (J 44414), bearing puller, pinion cone and side bearing installer (J 24433), pinion bearing installer (J 37624), driver handle (J 8092), rear pinion bearing race installer (J 8608), and flange pulley holding tool (J 8614-01). Start by lifting the vehicle and removing the axle lubricant. Unscrew the Axle Shafts and note where the rear propeller shaft is positioned with respect to the rear axle pinion yoke, then disconnect the propeller shaft. Measure and record the torque of rotating the pinion and ring gear then place an alignment mark between them. Remove the pinion gear then bottom out the pinion while using the projects that are used on the project when pinion. Another measurement to be made is the torque required to rotate the pinion. Mount the flange/pulley holding tool (J 8614-01) and loosen the pinion nut; keep it. Strip the washer and then the yoke through the right tools. Pry out the pinion oil seal and the outer and inner pinion bearings using the bearing puller (J 22912-B) with the aid of a hydraulic press. Install the inner pinion bearing cup using the pinion bearing installer (J 37624) and driver handle (J 8092), and the outer pinion bearing cup using the rear pinion bearing race installer (J 8608), and driver handle (J 8092). Install the inner pinion bearing with the pinion cone and side bearing installer (J 24433) and a new collapsible spacer, followed by lubing the pinion bearing. Mount the pinion in the bearing retainer, then the outer pinion bearing and a fresh pinion oil seal with the pinion seal installer (J 44414) into position. Apply sealant to the splines of the pinion yoke, install it with the marks made while isolation to align with the marks while isolation and seat it properly. Mount the washer and a new pinion nut, then tighten the nut, holding the flange/pulley holding tool (J 8614-01) until the pinion end play is just taken up. Measure the rotating torque of the pinion and adjust as required to meet specifications. After checking for a correct torque value, find the selective thickness of the pinion gear bearing retainer and then apply sealant; add the shim and bear retainer. Adjust the preload by tightening retainer bolts by 88 n.m (65 lb ft) and measure the rotating torque of the pinion and ring gear. Lastly, reassemble the propeller shaft, match the reference marks, tighten the retaining clamps, replace the axle shafts, bulk up the axle with oil, and put the vehicle back down on the ground.