Hi guys I have a problem with clutch - BMW Luxury Touring Community
 
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post #1 of 2 Old Nov 11th, 2006, 5:44 am Thread Starter
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Join Date: Aug 2006
Location: Ballarat, Victoria, Australia
Posts: 48
Hi guys I have a problem with clutch

My bike has only 22000 ks on it. I got is second hand of a guy who owned it for four years, so it has sat for some extended times, and the clutch is slipping. It went fine for the first 7000ks since I have owned it but now I am sad, so I wont sell my Aprilia yet.

-no loss of clutch fluid from master cyl.
-no oil in ground under the bike.
-the leaver seems kind of slow to return some times after pulling it in and then releasing it.
-it also seems a bit slack/spongy when pulled in.

have I got a slave that has allowed air in?
have i got a broken/split pressure plate?
a colapsed thrust bearing?
will it fix with just a blead up?
Is the slave just gundged up from sitting?
any sugestions? or am i just going to have to pull the friggin thing to pieces to find out?
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post #2 of 2 Old Nov 11th, 2006, 8:51 am
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Join Date: Apr 2002
Location: Dandridge (Near Knoxville), TN, USA
Posts: 12,165
Well, the symptoms are strange, have not heard of those before.

Bleeding the system certainly won't hurt, and MAY do something, so since that is the easiest thing you can go, go ahead and try it.

I would be really surprised if the pressure plate spring has failed, and if so you would have clutch slipping.

My first GUESS would be that somehow one of the pistons, either in the master or slave has either galled or the piston seal edge has rolled, causing sticking. I had a slave piston that spun in the cylinder when the little throwout bearing siezed, but the symptom was rapid failure of the seal, then fluid loss and clutch contamination.

In any case, if you do have a failure of some kind in the slave cylinder, if not fixed quickly you will end up having to replace the clutch, so If it was me I would likely be pulling the slave to check it.

I don't want to achieve immortality through my work...I want to achieve it through not dying.

David Shealey
Dandridge, TN
EX: '01 Black LT, BAT BYKE (Totaled at 110,000 miles)
IBA SS, BB, BBG, 10/10ths.
No bike now, but maybe in the future.
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