I was taking a closer look at the Mcleod diaphragm clutch (11" pressure plate) and clutch disc I am planning on installing this coming weekend and noticed that when the clutch disc is placed on the pressure plate, the disc extends above the clutch cover to flywheel mounting tabs only .110". Is this normal???
The only way that I can see that the clutch clamp load is developed is via bolting the clutch to the flywheel where the pressure plate springs are compressed the distance the disc extends above the clutch cover mounting tabs. In this case, the distance is only .110. Doesn't seem like much. Its less than 1/2 the disc thickness.
I checked a remanufactured Zoom 10 1/2" diaphragm clutch cover and disc at the local Kragen and with the disc resting on the pressure plate it extended about .200" above the cover mounting tabs or about 3/4 of the thickness of the disk.
So, I called Mcleod's tech line a couple of times and couldn't get through. Drove to PAW where I bought the Mcleod parts during lunch and no one new what it should be. They did have another Mcleod cover (same part no.) and on the second cover the clutch disc only extended .060" above the mounting tabs. Something doesn't seem right. Anyone know the answer to this question. How much should a clutch disc extend above the clutch cover mounting tab surface when the disc is resting on the pressure plate?