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Unique transmission bearing question!!!

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NCAmother:
I've been following the really good tutorial on rebuilding the gearbox on the "this old tractor" site.  I have all the case bearings, but what wasn't noted were the pressed on shaft needle bearings for the different gears!  All the bearings feel good  by hand, (but at 7K rpm might be a different story)  Is it common practice to replace these bearings before I assemble the transmission, if so does anyone have any part numbers?  Thanks !
Nate

Wayne Orwig:
The bearings under each gear?
I seldom do anything but look at them. I did have a gear 'explode' in a transmission. I replaced the bearing under that gear on general principal since it had to take a hard hit.

Vasco DG:
Bit hard to explain but I only replace them if they either look worn or there is excessive 'Rock' in the pinion.

I'm basic terms though they are rarely in need of attention, hence the fact that they are rarely mentioned in write-ups.

Pete

NCAmother:
Thanks fellas,  they feel ok, just wasn't sure if they needed service.

sib:
The 5-speed gearboxes on the recent V7s have only one needle roller bearing, which sits under 5th primary gear.  The Guzzi part number is GU92251028.  It is the only bearing on these bikes that I haven't been able to find a SKF or other equivalent for.  It's the only bearing that's missing from the comprehensive bearing cross reference list at http://guzzitek.org/tableaux_guides/Roulements_Spis_Toriques_MAJ18.pdf  Does anyone here know if there is an SKF or other equivalent bearing for it?

Not that I immediately need one, but I'm curious about why it seems to be so obscure.

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