Noob, just getting started on a 67 CL77

e3steve · Post by **e3steve** » Wed Sep 08, 2010 5:04 am

WrenchRust wrote:I've emersed myself in Techknuckles for the last couple of days. Right now I'm having trouble learning all the part names (they don't always match up, i.e. I think "clutch lifter rod" is referred to as the "clutch pushrod" or sometimes simply as the "pushrod") I've read through pgs 92-100 a couple times and I'm re-reading it right now.

All one and the same, chum.

WrenchRust wrote:Now, about the groove in the lifter rod, I can't feel one. Not even slightly... I understand that it would be on the oil seal side, I can even see some dis-coloring where the seal sits, but I can't feel a groove.

Then you're good-to-go with that; lucky guy, Joel!

WrenchRust wrote:Still wondering about the grooves in the top hat looking bushing at the pawl end of the kick starter... And about the groove in the one fork shifter

As previously advised: replace ALL bushings with NOS -- do you want to have to drop & split the motor again for the sake of 30-40 bucks? Do it right, do it once. Email FAST FRED (fastfredkoren@aol.com), he's a really helpful guy.

Trawl The Forum for pics of a worn k/s shaft; it shows up really badly if the rollers are screwed.

The shifter forks look perfectly serviceable in the pics, as long as they're not bent (which is hard to tell from a 2D image. They're not burned, which is a good sign.

WrenchRust · Post by **WrenchRust** » Fri Sep 10, 2010 8:41 am

Hey Guys, thanks for all the help thus far.

Last night I started to make a list of the parts I'm going to need. And in doing so, I took the set ring off of my second gear to find the cotters were broken in 12 pieces... Which got me thinking about shimming my tranny... I realized, even after reading pg 100 (and as meany posts as I could find when I searched "shim" and "shimming") that I had no idea how to do that (Although I think it means to put shims (thrust washers? I think I read) between my gears to take up some wiggle room) So here are my questions...

A) Since most of the gears are not on a round part of the main shaft, where do you put the thrust washers?

B) Since my tranny is completely apart, how do I measure for wiggle room?

C) I think I read that I needed to check if the shift forks are fully engaging. How do I do that? The shift forks are in the top half while the gears are in the bottom half, if they are together, how can I tell if they are engaged?

D) I have know idea what the gears are suppose tolook like when they are engaged i.e. What first gear looks like compaired to what it looks like when it's in Third gear...

E) The cotters come in three sizes, how do I know what size I need?
Illastrations, pictures... Answers explained so a first grader could understand them would really be a great help.

I know this must be real novice stuff, but I really am trying to get it.

Thanks Again,

Joel

Snakeoil · Post by **Snakeoil** » Fri Sep 10, 2010 10:36 am

Joel, Go borrow your friend's computer and download the CB77 Shop Manual at this site:

http://www.rivetrestorations.com/Motorc ... Manual.pdf

Mark this website because there is good info there.

Now go into the shop manual to the construction section and read it all, multiple times until it sinks in. There will probably be a lot of new stuff in there, but it will get you grounded in a number of areas. No sense somebody taking the time to write posts for info that is already out there and available.

regards,
Rob

e3steve · Post by **e3steve** » Fri Sep 10, 2010 12:18 pm

First things first, Joel: here's a great, short video, courtesy of our ol' mate Scott Pargett, of how the tranny shifts and varies the gearing between the input & output shafts.

Get a look and absorb a basic understanding of how it all fits & churns in there.

Snakeoil · Post by **Snakeoil** » Fri Sep 10, 2010 8:33 pm

Hey Steve, not to argue, but I know how a tranny works and that video does not really give somebody who has no clue, a good idea of how it works. He has 2nd and 3rd only partially engaged and for a really short time. It does show how the gears engage and disengage via the sliding gears and the drive dogs, but only for 1st and 4th. I think that video is more confusing than helpful for someone who has never seen how a tranny works.

It's too bad, because he had a great opportunity to truly demonstrate each and every gear change.

I just cleaned the bottom case on my spare engine. Maybe, if I can muster up some ambition, I'll put the gear clusters in the case and manually shift them while videoing the process, along with a little narration. No promises here on timing. Weekend is pretty full. But should get around to it eventually.

regards,
Rob

WrenchRust · Post by **WrenchRust** » Fri Sep 10, 2010 8:54 pm

You ever get the feeling you're in a room full of musicians and a Beetles song comes on and you're the only idiot that wonders, out loud, "Who is this?" That's pretty much how I feel right now....

I'd like to really and honestly thank you for not making fun of me on here (at least not out loud) and leading me in the right direction.

I haven't gotten to a computer yet but I put the gear box back together (kinda, I am missing a couple cotters) just to get a better visual of it. I had a real "Awe Haa" momment when I realized the shift forks fit into the third gears main shaft and kick start shaft... I played around moving them back and forth and got a little bit of an understanding of how it works... A very little understanding, but that's a huge amount more then I had yesterday...

Rob, that video would be great. Oh, and my buddy is making a .pdf of my CL77 Parts Catalog for you.

e3steve · Post by **e3steve** » Sat Sep 11, 2010 3:46 am

Snakeoil wrote:Hey Steve, not to argue, but I know how a tranny works and that video does not really give somebody who has no clue, a good idea of how it works. He has 2nd and 3rd only partially engaged and for a really short time. It does show how the gears engage and disengage via the sliding gears and the drive dogs, but only for 1st and 4th. I think that video is more confusing than helpful for someone who has never seen how a tranny works......
regards,
Rob

Noprob, Rob; I appreciate the comments. But (getting defensive!) it's the only video I know of whereby the link to which I could easily find and quickly post for Joel.

And, to a self-confessed novice, it shows how the ratios shift and, to a degree, change the rotational speed between I/O -- e.g.: I know some people who think that the dogs remain meshed and the cogs make the alteration in juxtaposition!

Joel, you have a thirst for knowledge, demonstrated by the stage of deconstruction achieved to date. No-one here is gonna make fun of that! My mum had a drawerful once-working clocks & other mechanical & electrical stuff that I'd taken apart but had never managed to get back together. I always had bits left over! So, at 11, I started on bicycles; then, at 15, on old motorbikes AND my old man's car. Well, the bits were bigger and didn't roll under the dining room table.....

I don't believe that Scott intended the vid to be instructional; I think he was just excited that he was able to get it all back together -- unlike me, with my mum's clocks!