[Michael C Henry]

I removerd the old slave cylinder and had it checked by a specialist. He pronounced it trash. He said it would have to be honed so far that oversized parts would be needed.
I now have a new slave cylinder. New slave cylinder is already covered in a bright plating and has thicker mounting ears. It has a 1" bore and 1 1/2" travel. It is a direct replacement for my original slave cylinder. The shop said they use this cylinder on a whole lot of vehicles including IH trucks. $39 . The new rubber boot, has a smaller hole for push rod. I made some arrangements on my push rod to capture and locate the end of the boot and seal it off, everything worked great.

Bleeding turned out not that hard and things started working. I all most put the wrong fluid in the resivoir though. 90W isn't a suitable replacement for silicone brake fluid, is it?
After all this I think it was the slave cylinder all along, not returning to it's bottom. The clutch disc wasn't actually wearing that fast. The clutch shop said my old 11" disc was .040" thinner than original and the presure plate spring tension had fallen from 2100 to 1200 LBS. @ .300" . So all in all, most of the stuff was due for replacment. I never figured that the spring tension would fall off that much without a lot of heat. So now I have a new slave cylinder, master cylinder, 12" clutch disc, and a resprung pressure plate, and thow-out bearing. Maybe all this will save someone else a little time and money.