Fluid in swingarm


Information and questions on GL1100 Goldwings (1980-1983)
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furious82
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Joined: Sun Feb 23, 2020 10:35 am
Location: United States
Motorcycle: 1982 GL1100

Fluid in swingarm

Post by furious82 »



I've got a 1982 GL1100 that I'm trying to bring back to life. When I removed the left air spring I noticed that there was a hole in the swingarm. Aside from that, I noticed that there was fluid inside the swingarm. I dipped a q-tip down in it and it look like oil. I've never had a shaft driven bike before, but I wouldn't think that the driveshaft would be a "wet" system. Even if it was then I don't know why there would be oil on the left side. The only thing I can think of is that the rear output shaft seal on the engine is leaking. Has anyone else had the same issue?


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WingAdmin
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Re: Fluid in swingarm

Post by WingAdmin »

There should be a DRAIN hole, to allow accumulated condensate to escape.

Is it possible that a previous owner sprayed oil inside it to prevent corrosion?
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newday777
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Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
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Re: Fluid in swingarm

Post by newday777 »

furious82 wrote: Sun Feb 23, 2020 11:09 am I've got a 1982 GL1100 that I'm trying to bring back to life. When I removed the left air spring I noticed that there was a hole in the swingarm. Aside from that, I noticed that there was fluid inside the swingarm. I dipped a q-tip down in it and it look like oil. I've never had a shaft driven bike before, but I wouldn't think that the driveshaft would be a "wet" system. Even if it was then I don't know why there would be oil on the left side. The only thing I can think of is that the rear output shaft seal on the engine is leaking. Has anyone else had the same issue?
Welcome to the forum furious82

It's 4am and I'm racking the brain to try to picture where this hole you are asking on would be on the swingarm as it's been 4 years since I parked my 83 in the storage.
I don't remember any hole on the swingarm. Front or rear of the swingarm? Top, bottom, side????

It is supposed to be dry in the swingarm. Did you pull back the accordion boot to check the rear main output seal or if there is fluid there in the boot or swingarm?
Did you remove the rear wheel, final drive and driveshaft to inspect the rear area?
More likely a leak would be from the final drive special shape, D shaped o-ring(long discontinued). They get damaged with rough handling removing and installation of the final drive. Be sure to clean out the old lube in the swingarm and all spline areas. Put new Moly Paste on all the splines(note Paste...NOT GREASE, Moly Paste is different than Moly Grease) There are splines on the output shaft, U-joint, driveshaft, final drive and the wheel flange that need Moly Paste, otherwise the splines will rust and wear to the point of replacement needed. I recommend Loctite Moly Paste which has a higher Moly content than the Honda Moly 77 Paste.

Loctite 234227 LOC51048 Moly Paste Anti-Seize Compound https://www.amazon.com/dp/B001HWBSJW/?tag=goldwingdocs-20 ... xEbMWGF0N6

This article shows the splines on the wheel flange and final drive

viewtopic.php?f=11&t77
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