New seal and nut assy on left that I just received and the original on right. Is it correct????? Safe to run??????

Never had a seal issue in the previous 4 years, so I'm unsure of running it.

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Pasbon you out there:?:

Looks like the one I just put in an 2007 36.

The one on the left, the seals were flush with the outer edge.

It shouldn't matter what year the motor was made, it matters what L/U you have (the old or new style). I have the new style and it looks like the seal on the left.

Mitch, gathering that you said you haven't had an issue in 4 years and no plug in the mid section tells me your more than likely running the old style L/U and the nut you recieved is for the new type ( the new style L/U has a small knuckle like gusset right on top of the gear housing). I'm 99.9% sure the seals are the same and you can just swap them out if your in a pinch.

Thanks BB. Another question, do I have a mixed PD. Here are some additional photos.

Is this the casting gusset your referring to?
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No plug.
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I'm just being cautious, seeing as the original nut/ seal pack is an 1/8" or so longer in thread area and the seals are recessed when compared to the one sent out.

The 4 year reference was in regards to my previous 27PD and this one, which I've only had since Feb/March 08.

The new LU had a change in the upper seal and there is a zerk behind that pipe plug located on the tower. That is a new style LU but I couldn't tell you if it has the the upper seal/bearing with the zert. When I got the new LU I had to drill & tap the tower plug to be able to reach the new bearing/seal zert. The lower units are the same as far as I know with a few internal upgrades over the years but they all retrofit to existing units.

Only way you gonna knoe for sure is to frop the LU and take a look at the top seal and see if it has the zert. Could have been a new style LU built right before the seal change, if there were any built like that.

The new L/U is made by a different manufacturer and was redesigned with an upper greased bearing from the start, unlike the old type where the upper bearing was lubricated from the oil bath by a spiral pick up on the upper shaft. The problem with this design was that in certain situations the oil pick up would not work if there was a low oil level in the L/U, resulting in the upper bearing running dry and failing.

I seriously think that this unit just slipped though the cracks during the new L/U swap over.

Mitch, I steered you wrong Myboy. I had Chicklet dig up my old one I just changed out, an apparantly its the seal nut on the right for the new style L/U not the left. Sorry Bro!

My humble appologies.

A couple pics complements of Chicklet! ( I'm stuck at work).

So the one with the recess and longer threads is for the newer L/U?

If that's the case I still need to drop the L/U and check/tap for a pipe plug correct?

Thanks Chicklet

Correct!

Well I dropped the L/U and I do have the updated lower seal system, but the upper shaft housng is a breather tube style with no grease port. It has the gusset on the gear case with the raised Pro-Drive on the side. I know I was creating a franken engine, guess I got the drive to go with it.