Re: M Clutch - Pictures anyone?

Posted by Janicholson on June 18, 2007 at 09:08:41 from (199.17.6.122):

In Reply to: Re: M Clutch - Pictures anyone? posted by Clarkbug on June 17, 2007 at 15:07:41:

Button clutches, Puck clutches, and similar driven disks, are substantially different than the dinner plate looking standard disk used in the original equipment on letter series. they look similar in the center, often with regular torsion damper springs, but the friction material is placed on the ends of arms that stick out radially like a starfish. The friction material is often creamic, metalic, or exceptionally durable simi-metalic composition that is often shaped like small disk brake pads,
They rarely have spring cushon between the surfaces, and so have an on or off attitude toward slipping when starting out (the engagement point). They are stronger than regular clutches abd wear longer. They are a bit tougher on the flywheel and pressureplate, but the advantages in durability and strength make them a good investment. Google images, button clutch disks, and you will see pages of what I am describing.
If it is a regular clutch with that same feel, it may be that the cushon sprongs between the friction surfaces have heat damage, and no longer provide any spring effect. OOORRRR the friction material has been contaminated with oil or grease. either one may (with continued working of the tractor) either stay bad, if the source of oil is continuous, or get better as time goes by. Either way, unless you are going to imvest time in removing a working clutch, I would leave it alone and learn its behavior. I just put a six button ceramic clutch set in my family Subaru Outback, and my wife likes ita positive feel, Good luck, JimN

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