Clutch plate removal

T

Tommo

New member
Location
Plymouth UK
I have a 750sf 1971. I have removed the outer clutch basket and am now faced with some kind of pin system holding the springs in, anyone know how I remove the pins ? Can I convert it to bolts instead of pins?
Thanks for some help
Here's what I'm faced with......
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Early type "steel" clutch...

Pressing on the spring collar will release the pins for (fiddly) removal. No, this clutch cannot simply be converted, you will require a complete hub and pressure plate assembly, along with the suitable (later) clutch plates.

piet
 
I was busy with the clutch on my 1970 S a few weeks back.
I recommend that you make up a tool out of a piece of tube. I used some 10mm copper tube. Makes things easy.
Paul
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When I first did mine ('69AE) I made a simple tool with slotted end to push them in which worked quite well, but when I replaced my plates more recently it was a struggle to push them in to reinstall (thicker plates?) so decided something different needed.
I ground the nose down on an old C clamp so it would fit far enough over the shoulder of the engine case to locate a small piece of slotted copper tube which allowed me to compress the springs while I put in the pins. Pics following might explain it better. (just my bodgy way of doing things....)
Edit - Link below is for write up of how I did mine the 1st time which will show tool I originally used, not sure it will help much now....

Replacing Clutch plates on early GT

Don?t post on the forum much anymore (not sure, perhaps in our age of easily offended it is not quite the freewheeling media it once was (dunno)) but one thing for sure it is a great mine of information and I always search here when I need to undertake something unfamiliar. Last year couldn?t...
laverdaforum.com laverdaforum.com
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Well, every day is a school day. I never knew 750's had that type of clutch spring retainer.

Every bike that I've ever taken apart (Laverda or otherwise) had bolts or nuts to retain the clutch springs. That pin system looks like a pain in the arse to work with. The only reason I can come up with for designing such a retainer is to eliminate the possibility of it coming undone (the pins appear to be located in a dished washer). A threaded fixture could conceivably back itself out. Not that I've ever seen or heard of that happening.
 
Dellortoman said:
Well, every day is a school day. I never knew 750's had that type of clutch spring retainer.

Every bike that I've ever taken apart (Laverda or otherwise) had bolts or nuts to retain the clutch springs. That pin system looks like a pain in the arse to work with. The only reason I can come up with for designing such a retainer is to eliminate the possibility of it coming undone (the pins appear to be located in a dished washer). A threaded fixture could conceivably back itself out. Not that I've ever seen or heard of that happening.
Click to expand...
Cam,

This was quite a common european method back in the 50s-60s, often with tensioned springs instead of pressurised. If I'm not totally mistaken, used by NSU, Adler and MZ at some stage. The tensioned ones are easy to work with, just need a hook to pull out the springs further. It at least works a lot better than the brit method of stepped nuts relying on an indent to keep in place, although this has the advantage of offering a certain amount of preload adjustability.

piet
 
sfcpiet said:
Cam,

This was quite a common european method back in the 50s-60s, often with tensioned springs instead of pressurised. If I'm not totally mistaken, used by NSU, Adler and MZ at some stage. The tensioned ones are easy to work with, just need a hook to pull out the springs further. It at least works a lot better than the brit method of stepped nuts relying on an indent to keep in place, although this has the advantage of offering a certain amount of preload adjustability.

piet
Click to expand...
Some small Japanese bikes had this system too, still got the hook among my tools. We used a needle roller from an old small end cage if we lost a pin.
 
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