1967 CL77 Swing Arm set up

[Snakeoil]

When I pulled apart the swingarm on my '67 CL77, I found two shims on the right side, one on each side of the right swing arm bushing.

I looked in the parts book and it does not show the '67 version of the rear swingarm. I thought about those shims for awhile and realized that they were there to assure that the bushings would be clamped to the frame and the swing arm would move relative to those bushings, instead of the bushings rotating on the swing arm pivot bolt.

So instead of reassembling the shims where I found them, I put one on the outiside of the right bushing and the other on the outside of the left bushing, so both would get clamped between the end cups and the frame.

Am I correct in my assumption on where these shims should go? Are they even correct for this assembly?

I know this swing arm had been off the bike before, because 3 of the 4 felt dust washers were missing. I tried to cut new ones, but it was a fruitless exercise. So, I installed 0.062 thickness o-rings into the grooves, which should actually work out better. This will seal the swingarm from water getting in, as well as keep the road crud out.

I did pump grease into both fitting before I did the final snugging of the pivot bolt nut. With the o-rings, the air cannot get out.

I've attached a sketch of the pivot area of the swingarm with both an As-found and As left shim locations. Space is puposely left between the parts on the sketch for clarity purposes.

Thanks,
Rob

[Snakeoil]

Hmmm... 54 views and no replies. Does this mean that nobody hear knows if those shims belong in there and if so, where they go?

I have another question. The swingarm on my '67 does not look like the swingarm on a '66 or earlier bike. The section where the rear wheel axel bolts up is a welded in piece of plate steel, instead of a steel forging with a socket into which the swingarm tube is inserted.

Looking at another post of a recently purchased Superhawk, I noticed that his swingarm looks just like mine. Does my bike have a CB swingarm on it in place of the CL component. Below is a pic I borrowed from that other thread to show the CB77 swing arm (blue shock) and another showing my swingarm.

Thanks,

Rob

[56_oval]

I wish I could help you, but I won't have a bike to look at until next week. When it gets here, I'll be tearing it down and I can check then.

[davomoto]

Your swingarm is correct for a 67. If you could post a pic of the shims in question, you will get a response.

Davo

[Snakeoil]

Thanks Davo. Too late on shim pics. Already put it back together.

Shims were steel, maybe 1/32" or less thick. OD and ID was same as swingarm bushings. Found the first shim under the metal cap on the nut end of the swingarm. Found the other one on the same side of the swingarm, only on the inside (frame side) of the bushing. My sketch shows where I found them and where I ended up putting them.

You could tell that the bushings were under compression from the pivot bolt tension. They had indentations from the ends of the bushing.

Thanks,
Rob