[Owned]

Hello. I’m working on a CB77 engine and am at reassembly stage. I’m finding what appears to be slop in the transmission. See image below. I’m getting .036 of play.

Should I look to add a shim to take this out? Note the gears are not aligning well due to the end play.

 

[dtsmjr8dan]

First off, I know nothing about that model.....From that pic I noticed that the bearings are not aligned with the grooves for the retaining clips.

 

[TOOLS1]

First off, I know nothing about that model.....From that pic I noticed that the bearings are not aligned with the grooves for the retaining clips.

WOW, you have a good eye. I have never had any problem with a Japanese motorcycle transmission needing shimmed, as long as I had all the parts in the correct places. Once the retaining clips are in it should be fine.
TOOLS

 

[Owned]

Hi. I can assure you, the bearing is squarely seated in the seat (retaining clip sitting in the slot). I believe had I have taken the picture directly overhead it would show this.

 

[mike in idaho]

I'm not sure it matters as long as the gear engagement dogs are getting deep enough engagement. Did you check/replace the low gear bushing? ,part#14 here :https://images.cmsnl.com/img/partsl...1961-usa-transmission_bighu0098e8s07_77d8.gif

 

[Owned]

Mike, Yes. Item 14 on your diagram was replaced with new. (although the old one looked good)

 

[Bill H]

Shaft end play should not exceed .020 The second gear dogs dont match up real well and you might install a offset keeper on the 2nd gear so the dogs move in farther. They come in .020 and .040. I used the .020 on mine and it made a vast improvement.

Bill

 

[Bill H]

Shaft end play should not exceed .020 The second gear dogs dont match up real well and you might install a offset keeper on the 2nd gear so the dogs move in farther. They come in .020 and .040. I used the .020 on mine and it made a vast improvement.

Bill

 

[Bill H]

I dont know why it double posted.

Bill

 

[Bill H]

I dont know why it double posted.

Bill

 

[Owned]

Thanks Bill. Where shall I turn for finding suitable shims?

 

[Bill H]

Its been about 4 years since I work on a 77 . The best source for info was Bill Slivers and the Honda 305 site. I also liked Tim McDowell "Classic Honda Restoration " 410-799-3588.

[email protected]. I have never met him but have spent time on the phone with him , he seams like a great guy and spent a lot of his time helping me.

Bill

 

[Owned]

Thanks Bill for your help! I was able to order metric spring steel shims from McMaster Carr. They come .3mm thick so I should be able to get the tolerance needed.

 

[Bill H]

To offset the 2nd gear for better dog fit you will need an .020 offset cotter gear. Stock is 23941-250 -010.

You may have to go to the Honda 305 site and ask for help to find a set. Most dealers only carry the stock set.

Bill