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It looks like the bearing at the rear of the tranny where the rod for the clutch goes may have failed and come apart?
Your problem of the transmission stuck in 2nd gear reminded me of this song from back in the fifties, Dusty would surely remember it...https://www.youtube.com/watch?v=2skGMkxB6Ng
I stand to be corrected, but I'm not certain that a failed throwout bearing can push pieces inside the gearbox case. I think they remain captive inside the bore of the rear cover. Someone school me. Inspect the rear cover carefully. If the throwout bearing did disintegrate, its spinning steel pieces can do serious damage to the internal surface of the 22mm bore of the aluminum rear cover. If the bore is damaged it will repeatedly tear up any o-ring that you use to seal the outer body. If damaged badly, the rear cover can be replaced or yours can be sleeved to restore the original bore dimension and smoothness.Meanwhile, there is another radial thrust bearing on one of the shafts. Perhaps the roller bits came from that one. Do a careful inspection.BTW, failure of either of these bearings shouldn't prevent shifting unless something (some part?) got jammed out of place. I'll be curious to see why the shifting doesn't work. I never heard back about the possible binding of the shift linkage as it passes through the frame rail. Also, the Guzzi is known to resist any shifting unless the internals are spinning. Good to have someone turn the rear wheel by hand while you try shifting the system. Once you reassemble the box, it still won't shift on the bench unless you turn input or output shafts.Patrick HayesFremont CA
As mentioned already. Pics of where your at so far would be great. Especially the throw out bearing.Tom
That whole transmission roller bearing is scrap. The inner race pulls off the shaft. A blind puller will remove the outer race from the back cover. NAPA loans tools and probably has a blind puller, free! 123bearing stocks all the bearings at advantageous prices including the 22 ball, double race, radial thrust bearing used on the input and output ends. They deliver in a timely manner.
You should put specified torque on the input and output shaft nuts. In each case you'll need special holders. Is there anyone nearby to you that could loan those holding tools? Are you going back with the original 2mm clutch spline or moving up to the better 4mm clutch spline? That determines what you use to hold the input shaft. I can loan, but shipping from CAL would be expensive and delayed. Must be someone closer.Patrick HayesFremont CA
I am not sure what the clutch spline is you are talking about. How do I determine which one is currently in the bike? The actual clutch plate is fine, no issues there, and it may have been replaced when the return spring was changed to the three coil one. They also installed the cups on the clutch rod backwards.
I cant help with the transmission problem, but i see you are in Ellijay Ga. Im between Chattanooga and Dalton. About three miles from Georgia border in Tennessee. Cool to have another Guzzi owner in the area. Good luck with the fix!
I'm also in this area - Hixson, TN. We should all meet for coffee or beer one of these days.
Could this also be why it would not shift out of gear?
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