Clutch plates: What's the difference?

LOUD MOUSE · Post by **LOUD MOUSE** » Tue Mar 13, 2007 3:41 pm

We both do the same thing and last time I checked it is to have fun and share info. .........lm

kustommusic wrote:ED, I really appreciate you input and consul on these matters (as does all the board) so I'm not about to argue with you, I just appreciate you taking your time to educate the rest of us! Steve

ggray · Post by **ggray** » Tue Mar 13, 2007 5:19 pm

OK, got the wires out and the plates look good..........No missing pieces on the friction material and plenty of slot depth.

Now, As far as the clutch springs................Ed alluded to a set that Honda came out with that had white paint on one end. Mine do not. Should I change springs while I have the clutch apart??

Are the ones with the white paint still available????? Part Number??????

I checked the length of mine compared to what my repair manual stated for minimum lenght (Replacement length) and I was only .005 above the absolute minimum. 1.315" being standard length and 1.275 being the replacement value length. I was around 1.280"

Do these lengths sound right?????????

This is the first time into a clutch and I don't want to have to pull it apart again if I don't have to.

Thanks in advance......

Gary

piecutter · Post by **piecutter** » Wed Mar 14, 2007 5:08 pm

This may shed some light on the number of plates issue. If you look up the parts on the modern system Honda does list qty 6 after a certain engine number. No doubt this has led people to put 6 disks in where they may fit. I decided to do some checking and dug out some of the old microfiche that we still have stored away. The first one I checked was from 1993 and nowhere does it mention qty 6. Then I checked a couple from 1977 and 1978. On one it listed 5 and the other, again, mentioned 6 after a certain engine number. It was only in examining this one closer did I realize what had happened. The qty 6 was for CL77 after a certain engine number and not CB77's at all.
At times Honda included CA, CB and CL77's all on the same parts microfiche with notes posted after the part number's quantity to differentiate between models and running changes on particular serial numbers. The next year they might issue them all seperated again, and you would only see the quantities for that given model.
It was when someone finally sat down to copy all these diagrams and parts lists into digital format that the programmer missed the vital notes that seperated the correct quantities for each given model. So now, although you search the parts by first giving the model, you still get a mix of part numbers because both models are still refererencing the same exact diagram and parts list. Theres just no notes seperating the models.

LOUD MOUSE · Post by **LOUD MOUSE** » Wed Mar 14, 2007 5:20 pm

Now go to the same fiche/list and look at the number of steel disc.
Again I say HONDA didn't put 6 friction disc in any of these type engines.
As ya check the bike numbers ya will see that bikes from/to numbers don't relate to any other changes in the clutch.
6 is a typo!!!!!!!!!!!!!!!. ..........lm

piecutter wrote:This may shed some light on the number of plates issue. If you look up the parts on the modern system Honda does list qty 6 after a certain engine number. No doubt this has led people to put 6 disks in where they may fit. I decided to do some checking and dug out some of the old microfiche that we still have stored away. The first one I checked was from 1993 and nowhere does it mention qty 6. Then I checked a couple from 1977 and 1978. On one it listed 5 and the other, again, mentioned 6 after a certain engine number. It was only in examining this one closer did I realize what had happened. The qty 6 was for CL77 after a certain engine number and not CB77's at all.
At times Honda included CA, CB and CL77's all on the same parts microfiche with notes posted after the part number's quantity to differentiate between models and running changes on particular serial numbers. The next year they might issue them all seperated again, and you would only see the quantities for that given model.
It was when someone finally sat down to copy all these diagrams and parts lists into digital format that the programmer missed the vital notes that seperated the correct quantities for each given model. So now, although you search the parts by first giving the model, you still get a mix of part numbers because both models are still refererencing the same exact diagram and parts list. Theres just no notes seperating the models.

piecutter · Post by **piecutter** » Thu Mar 15, 2007 1:18 am

In the cases where it says 6 the number of steel plates is also increased.

LOUD MOUSE · Post by **LOUD MOUSE** » Thu Mar 15, 2007 4:07 am

Which parts book or fiche are you looking at?
My CL77 book shows 6 friction but never 6 steel.
Same with my CL77.
Same with my CB77.
My very old CA77 book shows only 5 of both.
Neither my CB77 or CL77 fiche show more than 5 steel. . ..................lm

piecutter wrote:In the cases where it says 6 the number of steel plates is also increased.

piecutter · Post by **piecutter** » Thu Mar 15, 2007 11:08 am

So far I've seen the mistake back to the January 1977 CL77 fiche. It disappears again in the Febuary 1978 CA/CB/CL77 issue only to resurface again later. As far as the steel plates go, it never says 6, it just shows the normal increase from 4 to 5. I'm digging up some older fiche to see how far back I can trace it, not that it really matters, I just want to be able tell the guys that maintain the database how deep it goes. They seem to react with a bit more conviction when someone's obviously done the homework.