Other Stuff > Misc / Open
cb 550 3rd gear
Oddjob:
That's probably why it happened Gary. The circlips used on the gearbox are special, they are not eared like your picture, they are shouldered as well, so they fit in one direction. I seem to recall this makes them thinner than standard circlips.
Look like this.
https://www.cmsnl.com/honda-cb550f1-super-sport-550-four-1976-england_model17113/set-ring25mm_90602259010/
gary123:
--- Quote from: K2-K6 on October 06, 2023, 07:44:43 AM ---
--- Quote from: gary123 on October 05, 2023, 10:38:45 PM ---
--- Quote from: K2-K6 on October 05, 2023, 09:45:01 PM ---Fork looks bent sideways, only supposed to touch on either side of the two pads out at end of fork.
Looks like a half moon witness mark at base of semi circle that's been rubbing where it shouldn't. That will probably account for the error you're seeing in travel.
--- End quote ---
I thought the fork might be bent, but if it is I cant discern it. Def worn at base which makes me think the pads are shot.
--- End quote ---
I can't see complete detail from photo as slight blurr on fork of second one, but the pad looks more worn nearer the inner edge. If the other side (not in photos) of the pad has the tips more worn, giving a "diagonal" opposed wear pattern to the pads ? Then the alignment of them is contrary to the gear slot such that it siits touching both sides from that fault.
Slightly difficult to explain, but hope that makes sense.
Also usually shows with some heat blueing from running in contact continuously on some examples. That burr around the half moon cut shows quite a bit of running contact has taken place, when it shouldn't touch there at all.
--- End quote ---
Yes makes sense. My thinking is it must be the fork but I cant be sure as I just dont have the experience. Dont want to put it all together and it not be right.
To be honest Im totaly baffled.
gary123:
--- Quote from: Oddjob on October 06, 2023, 05:17:47 PM ---That's probably why it happened Gary. The circlips used on the gearbox are special, they are not eared like your picture, they are shouldered as well, so they fit in one direction. I seem to recall this makes them thinner than standard circlips.
Look like this.
https://www.cmsnl.com/honda-cb550f1-super-sport-550-four-1976-england_model17113/set-ring25mm_90602259010/
--- End quote ---
When I put it together the first time I used the correct circlip the one you see in the pic is temporary to avoid stressing the correct one while Im taking it apart several times.
Oddjob:
You should always replace those circlips when they are removed Gary. Fairly certain I've seen a diagram by Honda on the correct orientation of them when fitting, they are flat one side but have a curved surface on the other IIRC. I can't find the diagram now I need it, typical. Maybe someone else knows where it is. Might be a bulletin, I thought it was in the workshop manual but can't find it there.
Maybe I'm thinking of something else, maybe I'm confusing them with the thrust washers.
I'm sure someone will remember better.
gary123:
OK will do, in stock at DS or maybe Julie has em.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version