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  #1 (permalink)  
Old 10-23-2017, 05:35 AM
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Leaking seals in new Ultima RSD

Just installed a new Ultima RSD 6-speed in my American Ironhorse Texas chop.
The actual install was done by an old friend who runs the best indy shop in the area.
After about a week, I'm noticing a tranny oil leak. Assuming that it's coming from the drive side. I done some on-line searches that lead, mostly, to posts on these forums.
I see that the main seal and the O-ring behind it are typical culprits and also the "quad seal". Looking at the exploded parts diagram on the Jireh Cycles site http://www.jirehcycles.com/catalogpdf/Section%207.pdf
I can't figure out where this "quad seal" is.
Can anybody point me in the right direction?
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Old 10-23-2017, 03:48 PM
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The quad seal is a rubber o-ring that sits behind the larger mainshaft seal that is on the mainshaft. The spacer behind your pulley seals against the quad seal.
So if you remove the pulley, pull the spacer out and remove the seal it is back there.
Appears to be #4 on your parts breakdown you posted.
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Old 10-24-2017, 04:53 AM
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Thanks. That makes a whole lot more sense. After an evening's worth of sitting, it looks like the leak is on the primary side anyway. Just one seal on that end.
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Old 10-24-2017, 05:12 AM
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Quote:
Originally Posted by chuck1073 View Post
thanks. That makes a whole lot more sense. After an evening's worth of sitting, it looks like the leak is on the primary side anyway. Just one seal on that end.
i have 2 bikes with lsd and 1 with rsd ultima transmissions. Had to change all primary side seals pretty early due to leaks. Used genuine harley ones- they don't seem to leak.
Perhaps not very good quality aftermarket seals used by Ultima?
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Old 10-24-2017, 09:51 AM
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STEINBVG - Do you know the part number for the HD seal? Jireh Cycles is sending me some seals under warrantee but, if the HD part is better quality, I should go in that direction.
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Old 10-24-2017, 10:03 AM
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Quote:
Originally Posted by chuck1073 View Post
STEINBVG - Do you know the part number for the HD seal? Jireh Cycles is sending me some seals under warrantee but, if the HD part is better quality, I should go in that direction.
No , i don't know th part number.

But, Get the Jirech seals, stop by harley and ask them to show you a 1999 softail transmission Main and quad seals.

Compare to yours right there and , if identical and markings look the same-, don't bother, just use Jireh's. If not- the HD seals are not that expensive.

Overall i find HD seals, gaskets to be better quality than aftermarket. And not more expensive.
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SORRY FOR THE UPPER CASE. I AIN'T YELLING. I JUST MAKE TOO MANY TYPOS IN THE LOWER.

113"s&s, Walz softail 2000/2012 prostreet
96"s&s, Daytec dyna/ softail hybrid, 2010 chopper
127"Ultima, Chassis Design rigid 2013 bobber
120"Ultima, Kraft Tech rigid 2014 bobber
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