CA, the early DC's as well as the CC's had a Twin Disc type clutch with the same lock pin style as the later over center PTO clutches.It had three fingers, no links, just a cone that when pulled back rode the fingers up itself and pushed a pressure plate The 39 we have originally had a pull back to engage clutch. the adjusting pin on those style clutches was between the fingers and was pulled out to release the hub to turn it to adjust it. It sounds to me as if he has it to tight as the fingers ride up a cone and snap in a slight hollow at the top of the cone to lock it. Also it is a bit odd as the lined plate is bolted to the flywheel and the "pressure plate" hangs on the trans mainshaft. I'd back it way off until it was loose and then bring it back up to find where it snaps over center. mEl
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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