Should I grease upper gear case housing before install?

[jonny rotten]

I Replaced the upper seal on an Alpha one Gen one. The one that goes on the yoke. Before reinstalling should I grease the housing or the outside of the bearing pack? If so do I use grease or outdrive oil or does it slide in dry
Also, My shim pack has 3 shims that stayed together from the grease. One is a split ring shim, does that go in first or last

 

[kenny nunez]

Just wipe some gear oil in the housing and place the split ring last to hold this shims in place.

 

[jonny rotten]

Just wipe some gear oil in the housing and place the split ring last to hold this shims in place.

The split ring doesn't clip into anything. It just slides in with the shims and can go in either way. I "think" it went in first but wasn't paying attention when I pulled it out

 

[kenny nunez]

I always would slightly spread the split ring open to make sure it is holding the shims in place. If the split ring was first it would allow the shims to fall and get damaged while installing the driveshaft.