Ufo help!

[oseaghdha]

Pulled the clutch and this fell out!


I think in was behind the clutch basket, but I can't find it's home.
Anyone have any clues?
It's steel, about 6MM (.250) in diameter and maybe 4MM thick.
One end is unworn, the other shows some wear marks.
The OD is shiney.

If it was loose in theree, it could have caused some major FUBAR.

[trbig]

I can post a pic tomorrow, but it looks like one of the little button lookin' things that sits on the back side of your clutch basket that "Pressure plate 2" (according to the parts fiche) goes against.

If you take your clutch basket off, tip it face down and lift the housing straight up.. leaving all the friction and steel plates, you'll see them on the back side of that and betting one's gone. Never heard of one coming out though??


Tod

[trbig]

Oh... and if it's still sitting right there.. I doubt anything else is messed up.


Tod

[CatatonicBug]

I'm surprised something that small didn't fall down into the oil pan! Must have just fallen out of the clutch plate as you pulled it off.

[Ken Talbot]

Maybe part #23 in here:

[oseaghdha]

I can post a pic tomorrow, but it looks like one of the little button lookin' things that sits on the back side of your clutch basket that "Pressure plate 2" (according to the parts fiche) goes against.

If you take your clutch basket off, tip it face down and lift the housing straight up.. leaving all the friction and steel plates, you'll see them on the back side of that and betting one's gone. Never heard of one coming out though??


Tod

Dammit, I never saw those.
If you have a picture I would appreciate it. I can't tell from the fiche, and I wrapped it up for the night.
I pulled the clutch out in one piece, the basket, plates, everything.
That's when I heard it fall out. In fact, I only had it about 1 inch out from fully seated. Sounds like what you are talking about would come from inside the clutch pack?

One other question:
The star plate has protrusions on the outside edges of the bolt holes that face the springs.
Are the springs supposed to seat inside those? Seems like the spring diameter is too large for that, but I am not a clutch expert, yet.

[CatatonicBug]

The star plate has protrusions on the outside edges of the bolt holes that face the springs.
Are the springs supposed to seat inside those? Seems like the spring diameter is too large for that, but I am not a clutch expert, yet.

Yes. The springs seat on those little edges. As long as the bolts are in there, the springs should find their way onto those tabs by themselves though.

[DGXSER]

The entire star plate destruction issue surrounds that lip your talking about and lining up with the springs as I understand it. That is why you need to tighten it all in slowly and evenly so one spring does not slide off and get "extra" pressure from that lip cracking the plate.

[trbig]

What happens with the star plate is that it's a machined fit, and if you tighten one side too much, it cocks the body sideways causing it to stick. Then as you go to tighten it more, it puts too much pressure on the little arm of the star plate.

OK.. I'm an idiot. What I thought were little buttons in the clutch plate are actually rivets that go all the way through and hold on that gear on the back side.





Maybe Ken is right, but I can't think of what it is right off the top of my head. The only other thing it looks like to me is one of the rollers on the starter clutch... but that would take a MAJOR malfunction in the motor to get out of there.. and don't see any way to get it to where it was.

Sorry..

Tod

[oseaghdha]

What happens with the star plate is that it's a machined fit, and if you tighten one side too much, it cocks the body sideways causing it to stick. Then as you go to tighten it more, it puts too much pressure on the little arm of the star plate.

OK.. I'm an idiot. What I thought were little buttons in the clutch plate are actually rivets that go all the way through and hold on that gear on the back side.



Maybe Ken is right, but I can't think of what it is right off the top of my head. The only other thing it looks like to me is one of the rollers on the starter clutch... but that would take a MAJOR malfunction in the motor to get out of there.. and don't see any way to get it to where it was.

Sorry..

Tod

You are hardly an idiot. Thanks for the input.

I am beginning to think that it is a random oddity.

The actuator works fine, so I don't think it's the dowel from that. No way for it to squirt out that I can see.

If I was more adventurous, I would pull the oilpan and see what else is in there. But, it was all working fine excepting some clutch slip over 5000 RPM.
If nothing comes up I am going to screw it all back together and see if the motor gods are happy today.

[randy]

"The OD is shiney"

Could it be part of a roller bearing? Are there any in that neighborhood?

[oseaghdha]

Could it be part of a roller bearing? Are there any in that neighborhood?

All I see are ball bearings.
I thought about that. It does look like some class of roller, although the ratio of diameter to length is weird for a roller. And usually they bear on both ends.

At first I thought it was a magentic tip off a drain plug or something, but it doesn't stick to steel.

[bikerphil]

To me it looks like the magnet end of one of those telescoping retrieval magnets. I had one of those pop out on me this morning, in my front fork tube.

[TopCatGr58]

The picture is a little fuzzy, but it almost looks like one of these?


The rollers inside the starter clutch assembly, but I don't know how one would get loose, much less get inside the clutch section?? And I don't know the dimensions of these starter clutch rollers?

My vote is with Ken in the dowels in the throwout mechanism, but if you've inspected it and they are all there/intact, then you're probably safe in putting it back together.
T.C.

[oseaghdha]

Unsolved Mystery

Well,
I put it all back in, new frictions, new springs, and took it out for testing.
The clutch worked great, no creep, no slip. I puttered around for a while and got it all warmed up.

I hammered it hard a couple of times, a redline shift or two , and did a rather hard launch. No runs, no drips, no grenades.

Oh BTW, you can make a ton in third with the 750FD.

I have no idea where that thing came from, or how long it's been in there. I believe it was the original clutch, at 32K miles.

Just weird.