Clutch Friction Plates
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Ed Townsend
- New Member & Happy To Be Here
- Posts: 14
- Joined: Sat Sep 13, 2003 10:20 am
Clutch Friction Plates
I disassembled the clutch on my recently acquired 79 (BTW thanks for the advice on the swingarm needle bearing kit - went in without a hitch) in an effort to find the source of the rattling. I've read here that some replace the early basket with a later one. The gear/basket assembly seems very tightly riveted with no play/looseness at all so I thought I'd reuse it. I calipered the lined clutch plates and they check out at .135"; the manual calls out service limit at .120" so as long as its apart I'll replace them. I found some at PartsNMore and they call out 7 plates with one number and a single plate with another. What's the difference?
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EMS
- ICOA Member
- Posts: 9378
- Joined: Wed Mar 05, 2003 7:55 am
- Location: North East OH, ICOA 3904
The clutch consists of 7 plates (metal) and 7 discs "A" and one disc "B" which are friction discs. The disc "B" is the one located on the "top" of the pack against the "clutch center". It has a slightly different dimension.
Reason for installing a "later model" clutch is not looseness in the assembly, but the fact that the later clutches have metal spring torsion dampers and the early ones have rubber blocks. Rubber ages, hardens and makes clutch noisy.
Reason for installing a "later model" clutch is not looseness in the assembly, but the fact that the later clutches have metal spring torsion dampers and the early ones have rubber blocks. Rubber ages, hardens and makes clutch noisy.