Companion Shaft on rear diff Leaking

[Hardpivot]

Hey guys,
Recently I pulled my 9" rear diff apart to do a partial rebuild. I didn't touch the locker or the carrier bearings, but I did replace the bearings on the pinion gear. When I pulled the pinion housing off, I noticed there was no seal between the it and the axle housing, just a shim. Now that I've put it back together, Its leaking from that spot and it didn't before. Should I have put rtv between the joint with the shim?

 

[Broncobowsher]

There is an O-ring on the pinion support. Sounds like you didn't replace that when you took it apart and it is now leaking.
No sealer on the pinion shims, that will add to the thickness. And it is the wrong place to do the sealing. The shims should be dry with no sealer.
Pull the pinion support again, replace the O-ring.

 

[Hardpivot]

There is an O-ring on the pinion support. Sounds like you didn't replace that when you took it apart and it is now leaking.
No sealer on the pinion shims, that will add to the thickness. And it is the wrong place to do the sealing. The shims should be dry with no sealer.
Pull the pinion support again, replace the O-ring.

Aw excellent. Thank you very much!