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1st October 2018
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Biker
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Join Date: Jul 2011
Posts: 24 Sportster/Buell Model: Sportster Sportster/Buell Year: 1990
Reputation: 10
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90 1200 Screwed
So, hi all haven’t posted in a really long time. I’ve had this rattle sound for quite sometime that I could not find. Only makes the sound when cruising along not under a load. Can’t find where it’s coming from so I’ve avoided riding this bike till I figured out the problem. Recently when I start it sounds like I’m running an open primary, which I’m clearly not. So I decided to pull the primary cover and figured maybe clutch bearing has gone bad. Pulled it apart checked clutch bearing and it is fine. I noticed from the crank the crank there was oil dripping out, thought it seemed strange since everything was cleaned up when I took off primary so I didn’t make a mess. Grabbed my phone and turned on flashlight and this is what I saw. WTF!
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4th October 2018
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Know It All
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Join Date: Jul 2013
Posts: 159 Sportster/Buell Model: XLH Sportster/Buell Year: 73
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At least you caught it before it destroyed the engine. I'd remove the top end first in case it's in good enough condition to reuse or sell. That makes pulling the bottom end much easier.
Post pics of the autopsy. You might have gotten lucky and sustained moderate damage.
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4th October 2018
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XL FORUM TEAM MEMBER
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Join Date: May 2013
Location: Wisconsin
Posts: 2,529 Sportster/Buell Model: XLH883/1250 Sportster/Buell Year: 1988 Sportster/Buell Year #2: 2001 Other Motorcycle Model: Blast Other Motorcycle Year: 2013
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Bad bearing or bad seal?
__________________
It's Hammer time
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5th October 2018
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Biker
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Join Date: Jul 2011
Posts: 24 Sportster/Buell Model: Sportster Sportster/Buell Year: 1990
Reputation: 10
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Farm all, I will post as soon as I start tearing it apart. Yeah I definitely got lucky.
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12th October 2018
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Know It All
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Join Date: Jul 2013
Posts: 159 Sportster/Buell Model: XLH Sportster/Buell Year: 73
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Quote:
Originally Posted by WI_duker
Bad bearing or bad seal?
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Of course seal failure wouldn't hose the bearing(s), # 42 below, so the bearing failure is what trashed the seal and produced the knock.
http://partsfinder.onlinemicrofiche....ASE%20ASSEMBLY
It's a total teardown including oil pump because the crumbs will have gone far and wide. I'd discard the oil hoses and do an thorough job flushing and inspecting (USB borescopes which work with phones and PCs are about 20 bucks online) the oil tank. |
16th October 2018
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A Million Facts & Figures
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Join Date: Jan 2005
Location: Famous Potatoes
Posts: 9,931 Sportster/Buell Model: XL883 Sportster/Buell Year: 2007 Sportster/Buell Model #2: Buell Cyclone Sportster/Buell Year #2: 1999
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It's also a full tear down because that's the only way to change that bearing and race.
There's a similar bearing on the inside, and a spacer between the two of them that sets flywheel end play.
The service manual covers the procedures for changing those bearings and races, and how to measure end play and set it within the desirable .001-.005" range with spacer selection.
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