Sticking clutch?

[Tinus89]

I don't really see why you would need to do anything else then properly degreasing the pressure plates?

[Scud]

Clean and re-assemble is a good plan. That safety washer was damaged, and therefore should be replaced. 

 

For what it's worth, when my LeMans clutch started slipping, I installed new friction plates, springs, and intermediate plate. I just roughed up the pressure plate and friction surface of the starter ring with coarse sandpaper. But in retrospect, I could have gotten away with only replacing 5 springs. The friction plates still had life in them. I think that alternating 5 original and 5 heavy springs would have extended the life of the original parts significantly. 

 

Re flywheel bolts - I've heard that you should not re-use them. I don't know if that's true - or just people repeating gossip... but like you said, new fasteners are cheap.

 

I think I may have 5 heavy springs I can send you - but not till Saturday. But they're only like $2.00 each at MG Cycle. You can also get a new intermediate plate for about $25. That will give you two fresh surfaces.

[docc]

I'll see if I can simply degrease and lightly dress the plates. They are not grooved or damaged.

 

The rear friction plate material is extremely loose on both sides. Would not have been much longer before it "came from together."

 

MotoInternational lists the OEM spring part number, rather than the "stiffer/softer" options.

[swooshdave]

 

Re flywheel bolts - I've heard that you should not re-use them. I don't know if that's true - or just people repeating gossip... but like you said, new fasteners are cheap.

 

When you see somewhere that the bolts should not be reused it's because they are designed to stretch when torqued. Conrod bolts are an example.

 

Even if they are expensive, replace them.

[luhbo]

Look on the head for exact specs. The bolts are 12.x plus Loctite Medium. Also look up how to torque them - I think it was 40Nm or so, but I'm guessing here.

I reused mine btw. Properly torqued they aren't stretched.

Don't mind the colour of your plates, for me they're looking good.

Loose friction plates are garbage. You may weld a lever to one of them and use it for blocking the input wheel.

[docc]

Building tools out of the old parts is brilliant! I thought I would use the input hub as a clutch compressor, but it goes back to work . . .

 

My "engine man" looked at the plates and felt there is no change to the metal, only a glaze. 400 grit aluminum oxide cloth appears to be effective. He cautioned me to use a flat backing surface.

 

Results soon to follow!

[docc]

Looks like the pressure plate will be fine . . .

[andy york]

did you sand your assembly marks off ?

[docc]

Andy, thanks for bringing attention to this:

The pressure plate has a hole drilled in one of the teeth; flywheel has an arrow to index the springs.

 

Also, we marked the flywheel to the crank, and the "ring gear" to the flywheel.

[docc]

 

One unanswered question (among the many), can these surfaces be restored?

 

Answer:

[MartyNZ]

Docc, have you considered this Valpolini single plate clutch?

http://www.valpolini.com/index.php/home-en/prodotto?&fID=1036

[bbolesaz]

Looks like the mythical RAM single plate 6-speed clutch is still available from Italy !

[docc]

Docc, have you considered this Valpolini single plate clutch?

http://www.valpolini.com/index.php/home-en/prodotto?&fID=1036

I haven't heard of the Valpolini. Looks like an option for those needing a flywheel (Rosso Mandello/Tenni/Scura). Any idea on the cost?

[bbolesaz]

I tried to check it out, but their stupid website wanted registration before it would show prices and for some reason, it never sent the registration email.  Like I said above, I think it is the RAM clutch, Valpolini seems to be a parts house.

[Scud]

That picture at valpolini looked is exactly like the aluminum flywheel and clutch assembly I took out of my Scura - and does not look like the Ram unit I installed; which has a steel flywheel.

 

 

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