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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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  #1  
Old 5th July 2020
Tipofthelake Tipofthelake is offline
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Sportster/Buell Model: XLS 1000
Sportster/Buell Year: 1979
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Sportster/Buell Year #2: 1973
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Default Chasing Down Leaks

I have been slowly trying to chase down and take care of some of the leaks and drips on my 73 xlch, and thanks to reading through old threads I realized that one of them was the seal on the mainshaft. After getting the sprocket off (whew, that was harder than expected) i found that the housing had been bent to heck and dented, no type of gasket or sealer at all, and with only 3 of the 4 screws in place. It took a lot of hammering and reshaping to ger everything back to proper, but it is buttoned back up and on to the next thing that was done wrong.

Dennts and dings from a PO




After straightening but before I replaced the missing hardware


I would not have thought to look here for where I THOUGHT a lot of the oil was coming from, so once again this place has saved me a lot of aggravation and time. Cheers, y'all.
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Old 5th July 2020
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doodah man doodah man is offline
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Default

It will be really nice not having your rear rim and sprocket cover slathered in oil! What did you use for a gasket under the seal holder? Did you make sure the oiling slot (~ 2:00) was unobstructed?
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Old 5th July 2020
Tipofthelake Tipofthelake is offline
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Sportster/Buell Model: XLS 1000
Sportster/Buell Year: 1979
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1973
Other Motorcycle Model: Electraglide
Other Motorcycle Year: 2007
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Default

I used the gasket coated with a very thin coating of nonhardening gasket maker, except I left the inner area where the oil port free of sealer. Snugged down in rounds tight but not cranked, and with a bit of old blue on the screws. I determined shortly after buying a few years ago that the PO was ideologically opposed to locktite and torque wrenches. While I was down there I noticed that the rear bolt for the starter block off plate was missing also, so that got fixed as well. I have gone round and round the bike at this point and I think I have finally found and replaced all the missing or wrecked fasteners. (Fingers crossed, knock on wood, salt over the shoulder, etc.) Took it for a ride this evening and only a few stray drips after parking, and in different areas, so I'm quite pleased. I can live with a few drips until riding season cools off, but puddles weren't cutting it. I have all new seals and gaskets, but I'd prefer to ride while it's nice rather than tearing everything down now.
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Old 5th July 2020
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ericfreeman ericfreeman is offline
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Sportster/Buell Model: Ironhead XLH Sportster
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Sportster/Buell Year #2: 1977
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To prevent gear oil from traveling down the splines and leaking you should apply some RTV to the inside of the sprocket so it seals the joints and gets pushed outwards towards the nut as you tighten the sprocket. Don't apply to the mainshaft itself or you'll push the sealant into the trans, only apply to the sprocket splines.

Eric
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