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Buell Forum » Old School Buell » Archive through March 05, 2012 » Anyone have the p/n for the non-exploding primary chain tensioner? « Previous Next »

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Hogluvr
Posted on Sunday, February 12, 2012 - 09:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm sure my parts books have the old number, don't wanna buy another grendade!
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Jramsey
Posted on Sunday, February 12, 2012 - 09:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

39975-90A
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Buellathebuzzer
Posted on Monday, February 13, 2012 - 06:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

so, would someone care to say something about the "exploding" primary chain tensioner? on what models and years did the tensioner "explode."
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Jramsey
Posted on Monday, February 13, 2012 - 08:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Mid year 2000 and earlier had the old style thin plate/crack/wedge/tear up the primary style.
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Willyboy386
Posted on Monday, February 13, 2012 - 12:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

HI

New style adjuster JP Cycles part # 6000464

http://www.jpcycles.com/product/6000464
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Ltbuell
Posted on Monday, February 13, 2012 - 01:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Also,Al at American Sport Bike has them for $22.30.Just a thought.LT
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Buellistic
Posted on Monday, February 13, 2012 - 02:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The shoe bracket is what brakes ...

The reason the EARLY BRACKET broke is because the FACTORY SERVICE MANUAL is wrong on the primary chain adjustment
which is TOO TIGHT(it should be 3/4 inch loose on the tight spot) ...

Rather than correct the adjustment specification they made a stronger shoe bracket ...

The way you learn that you are adjusting the primary chain TOO TIGHT is the primary chain will wear a DEEP GROVE in the plastic shoe ...

While you have the PRIMARY COVER off you should replace the
CLUTCH "GRENADE PLATE" which is called a SPRING PLATE PN 37977-90 ...

The "GRENADE PLATE" is replaced with
TWO STEEL PLATES PN 37913-90 and
ONE FRICTION PLATE PN 37911-90 ...

With this PRODUCT IMPROVEMENT you will have the same thing as what the AFTERMARKET CLUTCH suppliers sell as
a RACING CLUTCH ...
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Hogluvr
Posted on Monday, February 13, 2012 - 07:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks guys,

Well, you ended up answering my next question too. I guess the '01 and '02 are safe, the '99 is the one that got grenaded, and I'll replace the one in the '96 before she gets back on the road, thanks!!
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Buellistic
Posted on Monday, February 13, 2012 - 08:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

NOTUBE FRAME clutch is "SAFE" if it has a
"GRENADE PLATE" in the clutch !!!





(Message edited by buellistic on February 13, 2012)
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Buellathebuzzer
Posted on Monday, February 13, 2012 - 09:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Was this the subject of a recall?
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Bluzm2
Posted on Monday, February 13, 2012 - 10:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

No, jut a running change in mid 2000. (for the tensioner)
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Buellistic
Posted on Tuesday, February 14, 2012 - 08:08 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

BUELLathebuzzer:

"GRENADE PLATE" was not a recall, just a money maker for HARLY-DAVIDSION from riders that did not remove it ...
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Buellathebuzzer
Posted on Tuesday, February 14, 2012 - 08:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm going to plead ignorance on this one. The term "Grenade Plate" does kind of sound like the whole bike will blowup. I understand now that what's at danger is other clutch parts. Every day I learn something new on Badweb.
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Buellistic
Posted on Tuesday, February 14, 2012 - 09:06 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What happens when the "GRENADE PLATE" starts to go bad is that it starts to come apart ...

It first destroys the CLUTCH PLATES which in turn destroys the CLUTCH BASKET with
FRAGMENTED PARTS getting on the PRIMARY CHAIN and into the TRANSMISSION GEARS ...

The "PRODUCT IMPROVEMENT" requires:

two STEEL PLATES PN 37913-90

one FRICTION PLATE PN 37911-90

to replace the "GRENADE PLATE" ie: SPRING PLATE PN 37977-90 ...

THIS PLATE WAS REMOVED FROM ALL EVO SPORTSTER CLUTCHES FROM 2001 on ...
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Fahren
Posted on Tuesday, February 14, 2012 - 09:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

http://www.badweatherbikers.com/buell/messages/476 23/512406.html?1257890785
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