Friction Plate Thickness?

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Jul 21, 2008
Rebuilt my clutch pack yesterday (73' 850) and ran the friction plates through the dial calipers, the were all ~ .12- in. the manuals i have say the spec thickness is .148-.142 in. However i was looking around at the this page and he says there are two styles of clutch packs and if i do have the "thin" style clutch pack then my plates might be in spec (i didn't write down the thicknesses or really look a the thousandths place because i thought they were way outta spec). So is this reliable information? Also what manual best covers the 73' commando 850?
Hi there , yes if you had a 850 and therefore bronze friction plates, the correct thickness is 0.12, I remember when young (35 years ago now ), that my workshop book mention also the thickness should be 0.14, so as I had a 850 at that time , each time my clutch became slippery, I professionnaly(???) measured them and as they were out the spec , throwed them in the bin and put new ones , let say it happens quite a few times , and the dealer was happy with my money and nobody tell me to just soak them in petrol, of course I had never measure the new ones (they were new , why???) , to find out myself that the bronze and the fibre were different thickness.............
More important is the overall stack hieght.

As long as the scrolls on bronze plates, and the pads on composite plates are significantly contrasted, they are most likely useable.

The key is, if they don't measure up, you will either get hard lever pull, a slipping clutch, a creeping clutch, or a combination of these.
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