Thursday, August 25, 2011

CM91: Clutch Disassembly

Took the clutch apart today.  Here are the steel plates and friction plates, stacked in the reverse order that they were removed.

I measured the friction plates to check for wear, and found that the A and B plates were actually much thicker than they should have been.  But I was comparing against the table in Clymer's and I'm not sure how valid it is for the CM91 since it doesn't list that model by name.  The type and arrangement of the steel plates didn't correspond to any diagram in the book, either.  I'm not sure if the CM91 clutch is just different, or if non-stock parts have been used during a past rebuild (which wouldn't surprise me).





There were two steps that were a real pain.  The first was getting these springs below in and out.  The book recommends using the tip of a small Philips head, but I had more luck using slip joint pliers to gently compress and maneuver the spring around.


The other tricky job was getting the cover screwed back in once you want to start reassembly.  You have to push the cover down, compress the big springs (pictured below), line up the screws and get at least one threaded - all the while pushing down hard enough on the cover so the screw can reach the hole.  An irritating juggline act, though I feel like it wouldn't be hard to work out a neat trick to make the whole thing easier.  I'll also have to see if the forums have any sage advice.


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