Ok, mystery solved, straight from pp 2-33 of the factory manual for '94MY
XJ/YJ, on command trac axles (ie, YJ):

Differential carrier is sealed on left (driver's) side at the carrier
bearing.

Differential is sealed at the right (passenger's, or disconnect) side on the
outside of the disconnect assy.

Thus Bill is correct, no seal at the inner disconnect needle bearing and the
5OZ added must be a pre-lube.

I stand corrected.

From: "Mike Romain" <romainm@sympatico.ca>
Subject: Re: YJ Axle Seal
Date: Friday, May 21, 2004 9:41 AM

Then how can the outer seal leak?

I mean when they leak, they freaking pour it out if you are tipped
sideways.

This cannot be if there is an inner seal. (Don't even think about
telling me the inner seal must be blown on 'all' of the ones I have seen
or heard of needing an axle seal changed, I won't believe that for a
second)

Where is the dip stick or check hole for the shift motor oil?

The book cannot say 'toss a tablespoon or so' in there when opening it
up only.

The maintenance schedule does 'not' mention anywhere that you have to
check the oil level in the shift motor nor are any provisions made to do
so.

'Every' other fluid level in the Jeep has a way to check it.

Tell ya what, when I get a chance to help the next person who needs an
outer seal changed, I will get them to fill up the shift motor to see if
oil actually stays in it or the OP could do that just to make sure.

Mike

Jerry McG wrote:
>
> No oil splashes in there, the diff oil is sealed in the pumpkin by the
> carrier seals. The lube stays in the shift housing area. between the outer
> seal and the inner bearing/seal assy
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:40AE0941.63FB8646@sympatico.ca...
> > To prelub it so it doesn't wear before oil splashes up there?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Jeepster wrote:
> > >
> > > I have read that they do and never looked when I had it apart..... I
> > > wonder why the need to put fluid in the vac disconnect housing if you
> > > don't have an inner seal.
> > >
> > > On Thu, 20 May 2004 16:29:11 -0700, L.W.(ßill) ------ III
> > > <----------@***.net> wrote:
> > >
> > > > I don't show an inner seal on the right side:
> > > >http://www.----------.com/dana30/index.htm
> > > > God Bless America, ßill O|||||||O
> > > >mailto:--------------------
> > > >
> > > >Jeepster wrote:
> > > >>
> > > >> I have a little pump I use for diff fluid and each time I take it
> > > >> apart I pump in enough to give the gear lubrication
> > > >>
> > > >> I kind of though the inner and outer seals where the same but I was
> > > >> thinking that the inner seal might be completely gone and
> overwhelming
> > > >> the outer seal. I'm guessing now that the shaft is scored enough to
> > > >> not give me a good seal or I messed up the seal on installation.