Need help identifying transmission issues

[AZscrmblr]

I have a noise that I believe is coming from the transmission (see my post “Transmission noise” in the CL72/CL77 forum). In addition, it is becoming difficult to shift from 2nd to 3rd . It does not want to engage 3rd gear until you lift the shift lever a second time. I decided to split the engine cases and do some investigation. I have included some pictures and what I have observed thus far. I would appreciate it if someone with knowledge of the types of problems to look for in the transmission could give me some feedback.
It looks to me like the dogs on the counter shaft 3rd gear are somewhat rounded (1st photo). Are they rounded enough to cause the dogs from the 2nd gear to not engage until the shift lever is lifted a second time?
When in 2nd gear, the dogs don't appear to engage fully by the movement of the shift fork (2nd photo). They can be brought closer together with your fingers (3rd photo). When power is applied through the main shaft does the taper of the engaging dogs of any two gears pull them together?
Would it be beneficial to install offset cotters?
Any other feedback from looking at the pictures?


DSC04198 by Gary Snell, on Flickr

DSC04201 by Gary Snell, on Flickr

DSC04204 by Gary Snell, on Flickr

[LOUD MOUSE]

The gears look OK to me.
I'd bet the problem is a warn point and roller at the shift drum. .............lm

I have a noise that I believe is coming from the transmission (see my post “Transmission noise” in the CL72/CL77 forum). In addition, it is becoming difficult to shift from 2nd to 3rd . It does not want to engage 3rd gear until you lift the shift lever a second time. I decided to split the engine cases and do some investigation. I have included some pictures and what I have observed thus far. I would appreciate it if someone with knowledge of the types of problems to look for in the transmission could give me some feedback.
It looks to me like the dogs on the counter shaft 3rd gear are somewhat rounded (1st photo). Are they rounded enough to cause the dogs from the 2nd gear to not engage until the shift lever is lifted a second time?
When in 2nd gear, the dogs don't appear to engage fully by the movement of the shift fork (2nd photo). They can be brought closer together with your fingers (3rd photo). When power is applied through the main shaft does the taper of the engaging dogs of any two gears pull them together?
Would it be beneficial to install offset cotters?
Any other feedback from looking at the pictures?


DSC04198 by Gary Snell, on Flickr

DSC04201 by Gary Snell, on Flickr

DSC04204 by Gary Snell, on Flickr

[AZscrmblr]

Loud Mouse – Thanks for the feedback. I will remove the guide pins and rollers, take some pictures and post them here.

[LOUD MOUSE]

Also show the point in the slot closest to the end with the neutral switch slot. .............lm

Loud Mouse – Thanks for the feedback. I will remove the guide pins and rollers, take some pictures and post them here.

[AZscrmblr]

Here are some photos of guide pins, rollers and shift drum points.

DSC04213 by Gary Snell, on Flickr

DSC04214 by Gary Snell, on Flickr

DSC04219 by Gary Snell, on Flickr

DSC04220 by Gary Snell, on Flickr

DSC04217 by Gary Snell, on Flickr

DSC04218 by Gary Snell, on Flickr

[AZscrmblr]

I decided to replace the 14mm bushing while I had the transmission open. When I compared the old bushing to the new one I found that there is a difference in the ridge in the center of the bushings (1st photo). The old one is thinner and has a taper on the side that goes into 1st gear (bushing on right in 1st photo). The taper matches a taper in the gear (2nd photo). The new bushing is flat on both sides of the ridge. When it is put inside the 1st gear, it does not go in as far (3rd photo).
Is this going to cause a binding problem? I did a search on the bushing and found quite a lengthy discussion but am not certain as to the final conclusion.

DSC04228 by Gary Snell, on Flickr

DSC04231 by Gary Snell, on Flickr

DSC04233 by Gary Snell, on Flickr

[LOUD MOUSE]

All parts lok good.
How is the shift drum keeper installed?. ...........lm

Here are some photos of guide pins, rollers and shift drum points.

DSC04213 by Gary Snell, on Flickr

DSC04214 by Gary Snell, on Flickr

DSC04219 by Gary Snell, on Flickr

DSC04220 by Gary Snell, on Flickr

DSC04217 by Gary Snell, on Flickr

DSC04218 by Gary Snell, on Flickr