CL77 Speedo Drive and Cable

[Snakeoil]

While disassembling the front end on my '67 CL77, I loosened the knurled nut on the speedo cable that connects it to the drive assembly on the front wheel. Yet, once loose, I was unable to remove the cable from the drive. I did not try to yank it out for fear of damaging it.

Looking at the parts book, there appears to be two version of the speedo drive and cable arrangement. The first, which appears to go with the small front brake, looks like the cable has the driven gear as part of the cable assembly. The other version, which is shown in the parts book, yet the ref number is not listed on the parts list, has a drive assembly and cable, but the cable looks to be more like the traditional cable with a driven end that slides into the gear assy and it held in place with the knurled nut.

It is possible that the PO used an older speedo drive/cable assy on this bike. I know he had a '65 CL77 he parted out.

Are the two drive assemblies interchangeable?

How do I get the cable assembly free of the speedo drive gear? Is it that little brass set screw on the bottom of the driven gear case?

Or is this just all a figment of my imagination and my cable is simply stuck and needs a good tug?

Thanks,
Rob

[davomoto]

Or is this just all a figment of my imagination and my cable is simply stuck and needs a good tug?

Yes, lube it well first, as I have broken cables doing this.

Davo

[Snakeoil]

Thanks Davo. Will go at it tomorrow.

regards,
Rob

[Snakeoil]

Ayup, wiggled it with a pair of needle nose pliers and it popped right out. A little rusty and crusty in there.

While on the subject, past experience with similar Honda speedo drives tells me you cannot get them apart. The little set screw will come out, but the brass slug that holds the driven gear is normally a permanent part of the aluminum housing by now.

I'm thinking of submersing the entire assembly in mineral spirits to clean out the old grease and then pump new grease in thru the lube hole. Any pitfalls in that path that may not be obvious?

If I pop the seal out, will the plastic drive hub come out?

thanks,

Rob

[brewsky]

Ayup, wiggled it with a pair of needle nose pliers and it popped right out. A little rusty and crusty in there.

While on the subject, past experience with similar Honda speedo drives tells me you cannot get them apart. The little set screw will come out, but the brass slug that holds the driven gear is normally a permanent part of the aluminum housing by now.

I'm thinking of submersing the entire assembly in mineral spirits to clean out the old grease and then pump new grease in thru the lube hole. Any pitfalls in that path that may not be obvious?

If I pop the seal out, will the plastic drive hub come out?

thanks,

Rob

Not sure if the 305 is the same, but I just did the same thing on an old Elsinore.

Removed the set screw and got the plug out, but the worm gear would not come out.
Didn't want to have to get a new seal, so I dunked the assy in gas and flushed it out good, then pumped in new grease.
Worked good.

[jleewebb]

not sure if a cl is same as cb, but on a cb, there's a small, hard to see circlip on the stationary (I think) part of the shaft...part nearest the hub...hard to describe and I don't have a pic...anyway, if you can get that circlip off, the whole thing comes apart pretty easy...wish I could be more specific, but it's a clue, at least...Lee

[Snakeoil]

I took at look at the CB and CL parts books and the speedo drive had a different number for both bikes. Both start with 44800, but the model code corresponds to the CB or CL models 268 and 273 respectively. Not sure if they could be the same part, but suspect not because the CL had much larger wheels and hence would require a different ratio, unless the speedo calibration is how they managed the difference.

But, my guess is the assembly is probably the same so I'll take a look to see if I can find the circlip you are talking about.

I think I should be able to get the seal out without damaging it. Heat gun applied with restraint should expand the case enough to make the seal relatively easy to remove.

I'll post what I find.

regards,
Rob