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Partially Solved: Oil Leak

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Old Jan 24, 2025 | 03:56 PM
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Default Partially Solved: Oil Leak

I think I found the source of my oil leak. Looks like the drain plug O ring is missing.



PARTIALLY SOLVED IN POST 39 BELOW:
Originally Posted by paulhog
Confirmed! Shift shaft seal. Thanks again to all that offered suggestions. Very helpful! Inspection of the primary revealed there's probably about 50% wear on the cam chain tensioner and some slight wear on the compensator. Overall, everything looks pretty good. I might not have it back in time to ride this weekend.
More leaks found:
Originally Posted by paulhog
DAMN!! Leak not fixed! It's better, but as mentioned by someone earlier, it's leaking where the transmission case meets the engine. I've never heard of anyone having a leak there. The engine-to-transmission gasket needs to be replaced. So pissed! 😡
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Last edited by BrandonSmith; Mar 1, 2025 at 08:51 AM.
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Old Jan 24, 2025 | 05:20 PM
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Originally Posted by paulhog
I think I found the source of my oil leak. Looks like the drain plug O ring is missing.

Not necessarily. I'm pretty sure you can't see the o-ring when it is properly seated.
 
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Old Jan 24, 2025 | 05:24 PM
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Darn! Then the hunt goes on. It started after my cam upgrade. It's real clean oil that's leaking. I'd bring it back to the shop where the work was done, but I've moved out of state. Thanks for your input.
 
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Old Jan 24, 2025 | 05:41 PM
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Clean the whole area really well with some brake cleaner then let sit a day, maybe go for a short ride and watch closely. It should tell on itself
 
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Old Jan 24, 2025 | 05:54 PM
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Just because you don't have anything else to do, See if the oil pan bolts are snug, I had a leak I could not chase down, Found few of the bolts were loose, no leak since
 
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Old Jan 24, 2025 | 06:06 PM
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Check the two fasteners that hold on the exhaust bracket/hanger on the right about mid way.
 
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Old Jan 24, 2025 | 06:13 PM
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Thanks for the great advice, oldsnow and Campy Roadie. I'll check those out tomorrow and will let you know if either or both were questionable. Gotta love this forum for help!
 
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Old Jan 24, 2025 | 08:49 PM
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Harley says to replace the drain plug o ring with every oil change. A lot of techs don't bother to do this.

I decided to change the oil myself after the 1000 mile service. The o ring was shredded and barely held together. That's why you pay so much for dealer service ...
 
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Old Jan 25, 2025 | 06:55 AM
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Originally Posted by paulhog
Thanks for the great advice, oldsnow and Campy Roadie. I'll check those out tomorrow and will let you know if either or both were questionable. Gotta love this forum for help!
If they're loose, come back and I'll tell you the trick to tighten them.
 
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Old Jan 26, 2025 | 09:08 AM
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I couldn't find any loose bolts. Cleaned the whole area, then ran some errands with it. It's not leaking now, but I'll keep an eye on it.

 
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