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Buell Forum » 1125R Superbike Board » Archive through November 09, 2011 » Clutch bleed « Previous Next »

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Philp
Posted on Tuesday, November 01, 2011 - 09:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Well it happened... I low sided at the track about two weeks ago. Unfortunately, it was a rather ugly low side: when the bike hit the dirt at the edge of the tarmac, it rolled (overturned). The clutch must have actuated while upside down and sucked air into the system because now the clutch is dragging.

My initial attempts to bleed the system yielded no fruit so I pulled the master cylinder, cleaned and rebuilt it. I also blew out the braided line. Everything is clean and functional. To bleed it this time, I went and bought a vacuum bleeder, which made things go quicker and easier. The clutch "feels" right but I still have drag. The puck got scraped away at the bottom so I pulled it off and I can see the arm actuating.

Do I just need to be more persistent and bleed some more? I checked another thread on this forum that seemed to suggest many attempts are required. I bled about 15-20 times with the vacuum bleeder and would have thought that's enough. Should I expect a solid rush of fluid coming out of the bleeder? Could there be another cause to the clutch dragging?

I'd like to add that this is one solid bike. Aside from the scraped up plastics, she cranks right up. In some ways, she looks even more bad a$$ with all that road rash...
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Boogiman1981
Posted on Tuesday, November 01, 2011 - 10:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

did you replace the cover? If not after the bleeding you've done i'd suspect the cover was/is deformed and causing interference
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Xodot
Posted on Wednesday, November 02, 2011 - 01:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

pts
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Philp
Posted on Wednesday, November 02, 2011 - 09:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I didn't change the cover. I was hoping this might not be necessary as I saw action on the clutch arm. Is there anything (surprises) I should be prepared for before I pull the cover. Any special tools necessary?

Thanks.

PS: what's "pts" mean?
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Nuts4mc
Posted on Thursday, November 03, 2011 - 09:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

there are many responses to "clutch weep" ...if you have time do a search...for example go here to a good cutaway as to what the cover and the clutch cylinder look like...unfortunately it doesn't show the big spring behind the piston ready to shoot out like a volcano erupting taking with it brake fluid:
http://www.badweatherbikers.com/buell/messages/290 431/577123.html

the hex nut in the middle of the clutch slave cylinder must be removed ...you'll need a 17mm offset box wrench and a Allen wrench to go thru the box wrench to keep the pullrod shaft from spinning (kinda like adjusting valves on an old honda or triumph)
...once the nut is free and if the piston isn't retained in the cylinder ...it's volcano time...possibly your damage has bent/deformed the cylinder and it will retain the piston ...once the nut is removed - the clutch housing can be removed my removing the housing hardware...be prepared to get brake fluid on parts - the best defense is the wife's aluminum foil...form it to "cover" the painted parts...good luck
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Xodot
Posted on Thursday, November 03, 2011 - 11:50 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

PTS = POSTING TO SUBSCRIBE Once I post in a thread, I get an e-mail notice of any additions to the thread... I want to see how this is resolve for my own ongoing education in how these things work. Kind of a "I gain from your pain" relationship. (sorry)

I recently replaced the clutch actuator piston and cylinder but have not had occasion to test it out yet.
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Philp
Posted on Thursday, November 03, 2011 - 11:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Nuts4mc, thanks for the tips. This problem is tough as the spill resulted in no weep or leak. It could be the cylinder or case has deformed and the only way to tell will be to pull the cover.

Xodot, was the need to replace the piston and cylinder from a spill or from wear?
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Xodot
Posted on Friday, November 04, 2011 - 02:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Philp - my clutch weep is from premature wear or dealer error. It is a common problem with the 08 from what I read here.

The o-rings on the actuator piston fail to retain fluid. I upgraded to the E B R actuator but have yet to fill up the system with DOT4.
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Philp
Posted on Friday, November 04, 2011 - 06:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks Xodot. I'll look on the EBR site too before replacing through Harley.
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Xodot
Posted on Friday, November 04, 2011 - 07:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)


d

stock on the left, e b r on the right
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Carbonrider
Posted on Friday, November 04, 2011 - 07:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Made in Germany by Buell Hannover




Grüße aus Ostfriesland

Hans
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Guard_rail
Posted on Tuesday, November 08, 2011 - 04:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My clutch just we bad. Shop told me HD told them there is no such thing as an 09 clutch. Every 09 bike has an 08 clutch. Which will for and will work. But one day will weep. So in 09 they made the none in 2011 they made the clutch.
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Froggy
Posted on Tuesday, November 08, 2011 - 04:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)


quote:

Shop told me HD told them there is no such thing as an 09 clutch. Every 09 bike has an 08 clutch.




That is correct. I even looked at the parts book to confirm, the biggest change was the cover. No other major changes from 08 to 09. They both use the same piston, clutch plates, etc.
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