Foot shifter bolt sheared off

[bobrebos]

In third gear, went to shift and shifter lever was just hanging.  Pulled off to side of road and the shifter bolt had sheared in half.  So couldn’t put another bolt in its place.  Limped the last ten miles to the weekend campground in third gear.  Looking at it further I need a new shifting lever bolt and have to somehow drill the old one out.  2013 Stelvio.  Maybe harpers Moto guzzi can get me one???  Stuck at the campground now watching everyone else ride by. 

Lol

[pehayes]

I don't ride that model.
Would be nice to see the hole where the bolt belongs or where the residual piece is stuck.
Would be nice to see the whole mechanism held into proper position in order to see how much room is involved and to evaluate if some other stock bolt might serve as substitute to get you home.
That will not be an off-the-shelf bolt.  You'll  have to search wrecks to see if you can salvage one.
Or, start considering what other head and shaft features you can tolerate if you're going to fabricate a substitute.
Would also be good for someone else to remove the same, unbroken stock bolt and provide all relative dimensions as you plan for substitute fabrication.

Patrick Hayes
Fremont CA

[pehayes]

As for removing, usually when a bolt breaks it relieves any pressure or tension on the threaded leftover.  Angular/tangential  tapping with a sharp punch might roll it out.  If you have to drill, there are tools known as "left-handed-drill-bits".  Turning counter-clockwise, they often grab the native bolt material and spin it right out.  Amazon has a variety of kits like this:

https://www.amazon.com/Neiko-01925A-Extractor-Extractors-Cobalt/dp/B000F9ANQW/ref=sr_1_3?crid=2P1FXOAZKZEKI&keywords=left+handed+drill+kit&qid=1650046525&sprefix=left+handed+%2Caps%2C626&sr=8-3

Patrick Hayes
Fremont CA

[bobrebos]

As for removing, usually when a bolt breaks it relieves any pressure or tension on the threaded leftover.  Angular/tangential  tapping with a sharp punch might roll it out.  If you have to drill, there are tools known as "left-handed-drill-bits".  Turning counter-clockwise, they often grab the native bolt material and spin it right out.  Amazon has a variety of kits like this:

https://www.amazon.com/Neiko-01925A-Extractor-Extractors-Cobalt/dp/B000F9ANQW/ref=sr_1_3?crid=2P1FXOAZKZEKI&keywords=left+handed+drill+kit&qid=1650046525&sprefix=left+handed+%2Caps%2C626&sr=8-3

Patrick Hayes
Fremont CA

Thanks Patrick.  I have a set of those left handed bits back home in the garage.  I ordered new replacement bolt (got two of them just in case) from harpers and should have them within ten days.  If I can get the old bolt out I will be able to fix it.  Will ride home Sunday in third gear! 

[redhawk47]

I knew that that bolt was "fragile", so I carried a spare. It is used on both the shifter and the rear brake levers. The threads have a spot of Loctite so it is not a field repair.
I dropped bike on the right side and broke the brake lever bolt near Escalante, Utah.  I called a friend in Moab and made arrangements to use his shop.  I tied the brake lever to the frame and rode without a rear brake, NBD.  I'm glad it wasn't the shifter.
The bolt is in a through hole, so, as I was drilling it with a regular bit, it spun out of the back side.  Screwed the spare in and I was on my way.
I highly recommend carrying one or two of those bolts. IMHO it is a bad design - the threaded section should be larger diameter instead of having that step which is a stress riser/break point..

As I wrote this I realized that I should check my current Guzzi's.  I found that the V85TT has 8mm bolts for the pivots, and does the brake on the V7II. The shift lever on the V7II has a pin fastened to the lever and it is all one diameter (no stress riser).  Better designs.

Dan

[guzzisteve]

Take the shifter off the lever and push & pull on rod to shift. I have not done this but just an idea.

[bobrebos]

We got it fixed using a bolt extraction kit from harbor freight, and using the rear brake mountains bolt on the shifter and a store bought bolt on the brake.  Correct bolt is on order from harpers Moto guzzi!  Life is good and ITS ALL ABOUT THE ADVENTURE!!

[bobrebos]

Tell me shifter lever engineering is NOT a weak spot of Moto Guzzi.  This is how my buddy Kyle has his shifter connector linked to the shift rod on his V7 Racer!  Notice the ace hardware mounting bracket!  Geeezzzzz. The darn ITALIANS!  Lol

[twowheeladdict]

Tell me shifter lever engineering is NOT a weak spot of Moto Guzzi.  This is how my buddy Kyle has his shifter connector linked to the shift rod on his V7 Racer!  Notice the ace hardware mounting bracket!  Geeezzzzz. The darn ITALIANS!  Lol

That makes me glad I bought the Sato Racing rearsets for my V7III!  LOL!

Glad to hear you figured it out Bob and can get to the lunch.  Life is an adventure for sure! 

[bobrebos]

I hav a stupid question.  So I got the new shifting lever mounting bolts from harpers MG in the mail today.  Why is there red paint on the threads?  Is that telling me to use loctite on the threads or just some other reason?  There was a blue paint on the broken one (blue loctite maybe). ????  Anybody got any idea? 


free safety size

[guzzisteve]

Bob, I've changed more than a few of those. That red stuff IS the Loctite, not red stuff like in the bottle. You will be able to get it out later if need be. You can take it off and apply blue if you want. I'd just crank it in snug.

[bobrebos]

Bob, I've changed more than a few of those. That red stuff IS the Loctite, not red stuff like in the bottle. You will be able to get it out later if need be. You can take it off and apply blue if you want. I'd just crank it in snug.

I’m just going to install it the way it came.  With the red stuff on. 

[guzzisteve]

Don't forget to put some synthetic grease on the lever. That way it doesn't wash off.

[bobrebos]

Don't forget to put some synthetic grease on the lever. That way it doesn't wash off.

Where on the lever so what doesent wash off??

[coast range rider]

Grease should go in the channel in the middle of the boss on the new bolt you purchased. Then make sure all threads are free of grease before assembly or else it will loosen and you will get massive play in your shift lever.

[bobrebos]

Grease should go in the channel in the middle of the boss on the new bolt you purchased. Then make sure all threads are free of grease before assembly or else it will loosen and you will get massive play in your shift lever.

Thank you

[bobrebos]

New bolts greased and installed.  Should be good to go on rear brake and shifter levers.  Time will tell I guess.  I got an extra mounting bolt, ez out kit etc in pannier for the future!!!

[Motormike]

New bolts greased and installed.  Should be good to go on rear brake and shifter levers.  Time will tell I guess.  I got an extra mounting bolt, ez out kit etc in pannier for the future!!!

Sounds like you've got any future issues covered!  The good boyscout...always prepared. 

[Motormike]

Recently I bought a Ducati Hypermotard from a guy in Colorado.  Trying to service it has been an experience, and not a very pleasant one.  Whoever worked on it before me must have been a Hyper-retard.  Every bolt and screw, drain plug, ad nauseam, has been over-torqued and slathered in thread lock, no matter how small the screw.  Waiting on the UPS man to bring me new hardware now, since I won't put a buggered up bolt back in.  Had to Dremel a slot in a couple of small screws that were (unnecessary) thread-locked in place.  That plus some heat from the torch did the trick.  Touchy work though, seeing as how one of the screws was about an inch away from the plastic fuel tank  Had to be careful, could have gone bad in a hurry.



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