Leaking cases
HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
Have you tried tightening the case bolts? Case leaks were not uncommon on Panheads; poor castings. I have never tried to seal a case leak but read the below vacuum method posted on another forum by an aircraft mechanic and long time Harley guy; one of the smart ones.
I haven't thought through how to pull a vacuum on a set of TC cases but if you can set the case up so a small vacuum can be pulled , "spray the leaking seam liberally with brake clean; the vacuum will wick the brake clean through the seam and clean it. Then brush the seam with Loctite 290; any Loctite will work if it can be drawn into the seam, it's just that the 290 is **** thin and will flow better. When done brushing, disconnect the vacuum source and clean off external loctite. Best done on a luke warm case rather then cold or too hot; use a heat gun to warm the cases. Give it about 6 hours to sit before testing it out". I think it worth a try.
Or, depending on how bad the leak is, just clean it up and keep riding.
I haven't thought through how to pull a vacuum on a set of TC cases but if you can set the case up so a small vacuum can be pulled , "spray the leaking seam liberally with brake clean; the vacuum will wick the brake clean through the seam and clean it. Then brush the seam with Loctite 290; any Loctite will work if it can be drawn into the seam, it's just that the 290 is **** thin and will flow better. When done brushing, disconnect the vacuum source and clean off external loctite. Best done on a luke warm case rather then cold or too hot; use a heat gun to warm the cases. Give it about 6 hours to sit before testing it out". I think it worth a try.
Or, depending on how bad the leak is, just clean it up and keep riding.
Last edited by djl; Mar 16, 2016 at 09:05 AM.
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