It's the style with two roller bearings with spacer between. The carrier is from late sixtys, early seventies but from what I can tell it's not much different than the other Eaton HO's I've torn town from the 40s.
There are two setup procedures, same as a 9" Ford axle that was used in NASCAR for many years. Use whatever pinion bearing shims are necessary to get the bearing preload correct- - - - -THEN set the pinion depth and tooth contact pattern by using shims between the pinion carrier and the housing- - - -NOT gaskets that can compress and upset the tooth contact. Using the same shim pack that came out is a mistake- - - -you'll need to compensate for whatever manufacturing tolerances the new pinion bearings might have by changing shims until you get the right preload.
Jerry
Excellent thanks, hoping to get contact as close as possible to what it was before to avoid introducing some noise from the gears.
