bearing onto the drive pinion. SST 09506-30012 9. ADJUST DIFFERENTIAL DRIVE PINION PRELOAD (a) Install the drive pinion, rear drive pinion tapered roller bearing and rear differential drive oil slinger. HINT: Assemble the spacer and oil seal after adjusting the gear contact pattern. (b) Using SST, install the drive pinion companion flange.
On the AAM-7.6, pinion depth is adjusted via a shim under the inner pinion bearing. Preload is set via the crush sleeve. You can do a quicky fix by over-crushing the existing crush sleeve. This can work but, it often only prolongs the inevitable (replacing the pinion bearings and races).