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Re-engineering the Shift Spring


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Neither do I, but I’m going to the nearest town and try to find a replacement seal. One less concern. I have plenty enough.

Thanks for sharing such a sad story. Someday you’ll find a 100% proofed Greenie:grin:

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Just talked with the guys at the spring company. It seems their manufacturing tolerances are not quite as tight as Chuck's experience. However, we have sorted it out and they are making a new batch of

Yeah, grumble about the bit being too long (but that's better than too short).  However, there's no way I'm sending out any springs that cannot be installed as-is. While I appreciate the offers of hel

Anywhere someone is allowed to express their opinion. While we think of this as detrimental it's actually a key component of crowdsourcing. If you get enough people expressing their perspective you wi

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7 hours ago, Chuck said:

Your old spring was ready to break from over travel.

From memory :rolleyes: the gearbox needs to be in neutral for the dogs to line up, so from memory :oldgit:you can't assemble it incorrectly. :)

 

It's been what... 15-16 years since I broke and replaced mine with a factory replacement (to be replaced with the new one soon) but as I recall you are correct.  I don't think it will go back together unless it all lines up, so it kinda is fool proof :thumbsup:

 

 

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Before you put the sealant around the outside of the cover, you want to do a "dummy run" and offer up the selector plate to the gearbox and make sure that it is going to go straight on. Otherwise the sealant will skin over while you muck about with it. The gear selector mechanism must be in the same gear as the gearbox for it to fit. It is easiest to have them both in neutral, unless you know for certain what gear the box was in when it locked and you haven't moved any of the selector forks.

You can set the gear selector mechanism in neutral, and put each of the selector forks in the gearbox in the middle of their travel, which corresponds to the box being in neutral. You might still have to slightly adjust selector fork positions by trial and error until they match up exactly.

Then clean the mating surfaces of any oil, apply sealant sparingly, and bolt up quickly.

Good luck!   - Jim.

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Good idea from Jim there,, how can I say so now. You will hear it when the side cover finds home.    :rasta:

Cheers tom.

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...exactly what I did a couple weeks ago. When i did the first dry run, they were off by just an 1/8" or so and needed a little adjusting and refitting. Glad I didn't have the sealant on at that point.

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 Very soon I intend to install the Chuck-Made/Scud Spring :thumbsup:  and compare to a factory replacement spring with about 64,000 miles/ 100.000 km on it.  This replaced one that broke in my warranty replacement gearbox after about 27,000 miles.

Here is the conundrum.  I have the "other two" factory replacement springs. Should I swap in these other two springs for the ones in the warranty gearbox that have about 90,000 miles/ 145.000 km on them?

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What is your intent for those other two transmissions? To sell with the caveat attached, sure. For yourself? Time-bomb trannies do not a touring gentleman make.  MG, Harper's or someone who has the ability and desire to wind these springs up should have them listed in their online parts lists. Relying leaning on the tried and true forum members gets a little wearing on them.

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I only have the warranty gearbox (installed since ~27,000 miles). Moto Guzzi took the original back. Right before they made the recall.

If any Guzzi parts supplier would take any interest in stocking these springs, I suspect that would be Gordon at MG Cycle. Perhaps he could even send some to Stein-Dinse since I'm pretty sure they have a relationship.

Curious to see how the other two springs compare to new ones. The shift lever is failing to spring back up more often. I seem to recall one of the other springs aids that function as well as the "pawl spring" in question (?)

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1 hour ago, docc said:

I only have the warranty gearbox (installed since ~27,000 miles). Moto Guzzi took the original back. Right before they made the recall.

If any Guzzi parts supplier would take any interest in stocking these springs, I suspect that would be Gordon at MG Cycle. Perhaps he could even send some to Stein-Dinse since I'm pretty sure they have a relationship.

Curious to see how the other two springs compare to new ones. The shift lever is failing to spring back up more often. I seem to recall one of the other springs aids that function as well as the "pawl spring" in question (?)

the pawl spring only puts tension on the arm, for positive engagement. Not sure which spring aids the shift lever. I suspect one of "those others"

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1 hour ago, footgoose said:

the pawl spring only puts tension on the arm, for positive engagement. Not sure which spring aids the shift lever. I suspect one of "those others"

The shift lever return spring.

Ciao

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  • 3 weeks later...

Broke side cover down, this is what I found.  Chuck and Scudd's spring installed.  Everything checks out, hand worked the edge where the spring contacted selector so its rounded edge.  Really excited  to get her back on the road, been missing this bike since it went down.  Boss on selector checked out at 14.91 mm.  Guess the 2002 with 2500 miles will get same treatment when it arrives.

0801201321.jpg0801201321.jpg0801201321.jpg0801201321.jpg

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Oh, by the way, based on RTV job on the selector box cover, I could safely say this "CHUCK/SCUD spring" is at least the 3rd spring to go into this bike, to include original.  I imagine the guy I bought it from had problems around 18,000 miles and had to pay the shop to fix. Once that was done (paying Northern VA shop prices) he was likely motivated to deal on his asking price.  Just my guess.  I will forever love this bike, it is the most fun to ride of all the bikes I had.  I'd be willing to put another 10 springs in it if I had to, but that will be highly unlikely with the perfection that you guys have engineered/manufactured here.

Edited by Tom in Virginia
editorial misspellings, grammar
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Is that marinara sauce in the trans??? Or just a red-blooded Guzzi?

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