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.
P1010003.JPG
P1010001.JPG
Pasbon you out there:?:
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| Seals/Nut https://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=41&t=5754 |
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| Author: | 50fps [ Sat Oct 31, 2009 7:08 am ] |
| Post subject: | Seals/Nut |
| 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. P1010003.JPG P1010001.JPG Pasbon you out there:?: |
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| Author: | POKER1 [ Sat Oct 31, 2009 10:29 am ] |
| Post subject: | Re: Seals/Nut |
Looks like the one I just put in an 2007 36. |
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| Author: | 50fps [ Sat Oct 31, 2009 11:27 am ] |
| Post subject: | Re: Seals/Nut |
| Author: | POKER1 [ Sat Oct 31, 2009 7:44 pm ] |
| Post subject: | Re: Seals/Nut |
The one on the left, the seals were flush with the outer edge. |
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| Author: | bayouboy [ Sat Oct 31, 2009 10:26 pm ] |
| Post subject: | Re: Seals/Nut |
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. |
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| Author: | 50fps [ Sun Nov 01, 2009 10:32 am ] |
| Post subject: | Re: Seals/Nut |
Thanks BB. Another question, do I have a mixed PD. Here are some additional photos. Is this the casting gusset your referring to? PB010577.JPG No plug. PB010576.JPG 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. |
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| Author: | POKER1 [ Sun Nov 01, 2009 12:52 pm ] |
| Post subject: | Re: Seals/Nut |
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. |
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| Author: | bayouboy [ Sun Nov 01, 2009 7:11 pm ] |
| Post subject: | Re: Seals/Nut |
| Author: | POKER1 [ Sun Nov 01, 2009 7:43 pm ] |
| Post subject: | Re: Seals/Nut |
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. |
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| Author: | bayouboy [ Sun Nov 01, 2009 8:16 pm ] |
| Post subject: | Re: Seals/Nut |
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. |
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| Author: | bayouboy [ Sun Nov 01, 2009 8:48 pm ] |
| Post subject: | Re: Seals/Nut |
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). |
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| Author: | 50fps [ Sun Nov 01, 2009 8:57 pm ] |
| Post subject: | Re: Seals/Nut |
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 
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| Author: | bayouboy [ Sun Nov 01, 2009 9:09 pm ] |
| Post subject: | Re: Seals/Nut |
Correct! |
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| Author: | 50fps [ Mon Dec 14, 2009 2:33 pm ] |
| Post subject: | Re: Seals/Nut |
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. 
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