K100RT Clutch is stuck solid - BMW Luxury Touring Community
 
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post #1 of 12 Old Dec 1st, 2008, 2:29 am Thread Starter
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K100RT Clutch is stuck solid

Just posted yesterday about "no squirt" on my 80K K100RT.
Decided today to resurrect the new/old one I have as well. Fired right up after 15 years of sitting, but the clutch is stuck solid to the flywheel. Lever pulls in fine, so that parts free. Tried a couple stop and locks and rough throttle back and forth to try and free it up, but I'm lookin at pullin the trans off, aren't I?

Besides pullin the trans, any suggestions? I know, I know, but I had to ask.

It's Winter here, I have the time.
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post #2 of 12 Old Dec 1st, 2008, 5:29 am
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Re: K100RT Clutch is stuck solid

Put it in gear with the engine not running. Pull in the clutch lever and hold the brakes. Operate the starter.

This works with old Volvos and is worth a try. The starter will bog and it should break free with a bang.
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post #3 of 12 Old Dec 1st, 2008, 12:32 pm
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Re: K100RT Clutch is stuck solid

If your clutch is hydraulic and the lever pulls easily to the handle then you probably have air in the line or a broken/leaking line. If it's a cable clutch and pulls easily through to the handle, your cable or clutch fulcrum is probably broken.
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post #4 of 12 Old Dec 1st, 2008, 1:01 pm
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Re: K100RT Clutch is stuck solid

The clutch release is cable activated. Have someone pull the lever and you look at the mechanism at the rear of the transmission.

If the lever on the transmission moves then the problem is that the clutch plate is stuck to the pressure plate or flywheel.

Putting the tranny in gear and holding the brakes locks the tranny imput shaft and clutch plate. Turning the engine with the starter turns the flywheel and pressure plate and should unstick the plate.

Ron
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post #5 of 12 Old Dec 3rd, 2008, 2:34 am Thread Starter
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Re: K100RT Clutch is stuck solid

Thanks Guys.

Starter trick didn't work. Being an electrician I know how much current draw was going on so after a couple of tries, I quit. Gonna pull the trans and lube the splines.

The bike has 980 miles on it and has been sitting since 1985. Like New!
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post #6 of 12 Old Dec 4th, 2008, 5:24 am
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Re: K100RT Clutch is stuck solid

Sounds like it is stuck solid for sure. The plate may be rusted to the shaft and you may have to get some solvent in there some how.
This site doesn't get much traffic on the old Ks. I would suggest BMWOA(you have to be a member to post) or

http://autos.groups.yahoo.com/group/kbmw/

http://www.k-bikes.com/forums/cmps_index.php?

Ron

Last edited by beets; Dec 4th, 2008 at 6:30 am.
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post #7 of 12 Old Dec 4th, 2008, 1:45 pm
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Re: K100RT Clutch is stuck solid

I can tell you that this is a lost cause and a complete waste of your time. I'll help you out and remove that heap for you!
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post #8 of 12 Old Dec 9th, 2008, 6:06 am Thread Starter
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Re: K100RT Clutch is stuck solid

In the end I wound up pulling the gearbox off, loosening the pressure plates bolts a bit, smacked the whole assembly a few times with a plastic mallet and it broke loose. Made the tool to center the assembly and tightened it back up. Lubed the splines, and put it back together.

Rode it that day. No issues.

Nice try, Yamadog, but no deal.

Thanks Guys!
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post #9 of 12 Old Dec 9th, 2008, 6:24 am
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Re: K100RT Clutch is stuck solid

Very good. Did the bike have any other problems from setting so long?
I would suggest lubing the final drive/driveshaft splines with Honda MOLY 60.
My 75rt was done with the BMW stuff over the years and has some wear on the splines.
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post #10 of 12 Old Dec 9th, 2008, 6:30 am
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Re: K100RT Clutch is stuck solid

OH Well! I was just using a little bit of reverse PSYCHO logic to keep you motivated
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post #11 of 12 Old Dec 10th, 2008, 12:06 am Thread Starter
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Re: K100RT Clutch is stuck solid

I've been using the Honda Moly for a few years now. No other issues. Surprisingly, after sitting 20 plus years, it fired right up. Only other issue was the rear master cylinder was stuck. Ugly brake fluid corrosion and all.

Yamadog, reverse PHSYCO. You been talking to my wife?
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post #12 of 12 Old Dec 14th, 2008, 12:30 am
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Re: K100RT Clutch is stuck solid

I just went through the same thing on an 85 RT that had sat for several years. I did some research and came up with the following. Put the bike on the center stand and put the transmission in 3rd or 4th gear. Start the bike and hold the clutch in and run it up until the speedo reads about 40 mph, then slam the rear brake on. Two times doing this freed the clutch.
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