Small gearboxes - parts needed

[Rolf Halvorsen]

Hi all

I am about to rebuild a Breva 750 (2004) gearbox.
This box has bad sounds in the 3rd and 5th gear.

I have listed here the 4 gear wheels which may be needed to be replaced:

32212010 - z=20 5th
32211410 - z=18 3rd
32214810 - z=23 (3rd on outgoing axle)
23215270 - z=18 (5th on outgoing axle)

Many of these wheels were used on other small Guzzi models - not only Breva 750, so please check what you have available.

I could use either good used ones without surface errosion or of cause brand new ones.

If any of you have some of these wheel - please contact me (rolf.halvorsen@mail.com)

Thanks so far.

Rolf

[malik]

Good luck Rolf.
I note that the Spare Parts manual indicates that they changed the 5th gear cogs in 2005. You could possibly substitute the later pair with more teeth. I bought a 32212011 from Stein Dinse  for some E15 a couple of years back. Didn't get the matching 5th gear - not yet anyway - it's cost exceeded the price of a secondhand gearbox. I search the guzzi parts people all over the world trying to find gears at reasonable prices, and still one to find. Do note that the V7 boxes will fit perfectly, at least the 5 speed ones, don't know about the 6 speed versions.

Fettle well, & let us know how you go.

Mal

[Antietam Classic Cycle]

https://shop.tlm.nl/en/gear-wheel-5e-pa-breva750-322120100000-moto-guzzi
https://shop.tlm.nl/en/gear-wheel-3e-pa-breva750-322114100000-moto-guzzi
https://shop.tlm.nl/en/gear-wheel-3e-sa-breva750-322148100000-moto-guzzi
https://shop.tlm.nl/en/gear-wheel-5a-as-nevada-flori-232152700000-moto-guzzi

[Rolf Halvorsen]

Thank you for your comments.

I can agree that a replacement box would be cheaper than a rebuild - but the lowest price I have found on the internett (ebay) today is 500 Euros for a box with about 70.000km from TLM.

In  my world I would rater invest in 4 new gears + a full change of sealing rings (3) and O-rings + a general look over + cleaning. This will cost about 1.000 Euros, but the you KNOW what you have and can rely on it for the future + if you sometime (always) decides to sell the bike, you can hope that the payback amount will reflect what you paid extra.

This will be my advise to the unlucky owner.

[Muzz]

I ended up getting a 2nd hand box from the states about 2 years ago, came out cheaper than the gears and shaft.  I think the equivalent of 300-350 Euros.

I had 5th go twice (I suspect that actually the case had faulty machining); be aware that there is a bespoke caged needle bearing that 5th runs on, with 5th gear being the outer and the shaft being the inner.  Both times it appeared that 5th had been trying to run sideways, and took out the shaft, bearing and the gear; big bucks.

[Muzz]

Have you got the box apart Rolf?

[malik]

What part of the world are you in, Rolf? Some of us might have contacts that could help.

You do realise that the later Nevadas have the same gearbox, and usually if it's labeled "Nevada" it's often cheaper, unlike brand new OEM parts. Might also be worthwhile trying to track down some decent machinists with the tools & skills to frabricate a gear or 2 from scratch. At E590 for one of the 5th gears there should be some leeway there.

Again, best of luck. Keep us up to date. I've still a box to tear down to refit the selector shaft & the return Spring properly. I keep putting it off.  I'll get to it. Promise.