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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Drivetrain » Secondary Drive: Sprockets, Belt/Chain, Ratios » Metal shavings in my primary oh boy « Previous Next »

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Lee
Posted on Thursday, September 02, 2004 - 06:29 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Anyone else had this problem? I was changing my primary fluid, taking out the plug and I had more than the "usual" amount of crud on the magnet for my '97 S1. Upon closer inspection it's metal shavings almost like the tips of gears. Don't know if it's from one of my high speed missed gears or what. I haven't broken her down yet. It's running, shifting and sounds great. I'm going to run it for another couple of hundred miles and check again, probably stupid. Anyone else had this problem? Thanks, Lee
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Reepicheep
Posted on Thursday, September 02, 2004 - 08:06 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Check for a split primary chain tensioner, that is not unusual. You have to pull the primary cover to check that.

Another common source of metal is the 5th gear drive assembly. You have to pull the tranny (not that big a deal on your bike) to check that properly. For a quick check, lift the back wheel somehow (jackstands with a piece of rebar through the hollow axle), put the bike in neutral, and turn the wheel. Listen closely for crunchy noises in the front sprocket area, or for cruncy feelings turning that front sprocket by hand (maybe with the belt removed). You can also pop the dust cover off and look inside the shaft on that front sprocket... you won't see the actual bearing, but if you see lots of rust or bearing pieces, you found the source of your metal.

Pulling the tranny on your bike is not a huge deal.
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Lee
Posted on Thursday, September 02, 2004 - 03:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks for that scoop. I'm running the upgraded primary chain tensioner so I hope it's not that. These shavings seemed to "look" like gear shavings if I had to guess. But alas it looks like a may have a little work ahead of me.
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Reepicheep
Posted on Friday, September 03, 2004 - 10:04 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I had a scary moment when I found a chunk of metal on my magnet when I recently replaced my crank seal...

Upon further inspection, it was the broken off tang from one of my heli-coils. No idea how it got all the way in there, I was being careful to keep them out.

It was relief when I realized what it was, though I was tempted to pull the tranny anyway while I was in there. Somebody here mentioned slapping in a second spacer to make the 1st to 2nd throw shorter. At the time I thought they were crazy, but in hindsight it sounds like it might be a good idea. Getting an easy "neutral" is a lot less important to me then getting a clean 1-2 upshift.
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Captainkirk
Posted on Saturday, September 04, 2004 - 12:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Lee; Sometimes my starter makes a hellacious noise when it tries to engage, and I back off (usually after sitting a day or two)-when I try it again, it works fine. I inspected the teeth on the bendix gear and the drive gear (around the clutch basket) when I was in the primary last June and didn't see any apparent damage, but it could possibly be the source of your metal. Just a thought. Reep-how did your starter drive gear look?
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Kenbull
Posted on Monday, September 13, 2004 - 06:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Reepicheep,

What or where did you used heli-coils?
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