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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Drivetrain » Transmission: Breather, Gears, Dogs, Forks, Bearings » XB12R transmission stuck in gear « Previous Next »

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Halffastracing
Posted on Thursday, October 13, 2016 - 02:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I low sided (left side) at around 30 mph. The front left turn signal, clip on, and shift lever were damaged. Although I don't recall the time just after the accident, I rode home (about 2 miles) in first gear. I couldn't shift because the shift lever was bent into the primary cover.

When things calmed down and I started replacing the damaged parts, I noticed that I couldn't shift the transmission. It's stuck in a gear (not sure which one). The shift lever felt like it was hitting a metal stop (similar to when you're in first and try to shift lower, but in both directions). Eventually, I got around to checking the clutch adjustment per the service manual (page 1-26). Completing this procedure didn't have any affect on the transmission behavior.

I got on the bike and tried to ride it around the block. I had to give it a lot of throttle and let the clutch out slowly. It reminded me of trying to start off in a high gear (3rd for example). Then as I approached 25 mph, the bike started coughing and the power fell off a cliff. I'm not sure if those two symptoms are related.

I then parked it and removed the primary cover (page 6-3) and visually checked it for any damage inside and out. There is no damage. With the rear wheel up on a stand, I turned the wheel throw a couple engine strokes, while my father tried to shift the transmission (he put the shift lever back on the spline and used the linkage to help apply torque). He couldn't get it to budge.

Can anyone provide some suggestions or share any experience they've had with similar issues?

I can take any pictures or post a YouTube video if it would help.
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Reepicheep
Posted on Thursday, October 13, 2016 - 03:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You probably won't see the damage until you go a bit further in. Remove the clutch assembly, primary chain, and stator bell as a unit, and you will then have access to the shift pawl assembly. That, and the shifter shaft, are likely "all jacked up".

You can fix all that without splitting the cases.

Hopefully the shift drum pins aren't damaged.
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Halffastracing
Posted on Thursday, October 13, 2016 - 04:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks Reepicheep! I'll check the Service Manual for guidance.
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Reepicheep
Posted on Thursday, October 13, 2016 - 05:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You will need a bar of aluminum (or something like a brass hinge) to jam the clutch / stator bell / primary chain so it can't turn while loosening the big nuts on the clutch assembly and the stator bell. And a couple of really big sockets. And a big torque wrench to put it back together (or you can cheat and calculate based on your weight where to stand on the handle of a long breaker bar, we can help). I'd want loktite red to put on that crank nut as well on reassembly.

If the manual has you taking apart the clutch asssembly, as opposed to removing it intact, you are in the wrong section of the manual.
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Airbozo
Posted on Thursday, October 13, 2016 - 06:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

"or something like a brass hinge"

4" brass hinge to be exact.


lol

Used that on my S3 and the SO rolled her eyes and asked if one of my "biker buddies" suggested that. When I said yes, she asked me to thank them for saving some $$ on custom tools.

So, Thanks!
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Jim2
Posted on Thursday, October 13, 2016 - 08:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

And the clutch hub nut is reverse thread (clockwise to loosen).
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