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Stripped transmission drain bolt thread

L

Louisv97

Cruisin' Guzzisti
Joined
Jul 24, 2019
Messages
399
Location
Orange County
For some reason, I've put this scenario in my head and it's been three days on repeat. Hypothetically, if the threads of where the gearbox oil is drained were to strip, would it be repairable?
This is for a V7 III where it uses a big plug. I don't use gorilla strength to tighten it, but for some damn reason I've had this scenario on repeat.
 
The next time you change tranny oil , drill a small hole through the head of the bolt and simply safety
wire it in place , that way you might refrain from giving it that extra twist to make sure it's securely fastened :) .
Peter
 
Moto-Uno said:
The next time you change tranny oil , drill a small hole through the head of the bolt and simply safety
wire it in place , that way you might refrain from giving it that extra twist to make sure it's securely fastened :) .
Peter
Click to expand...
I'll have to give that a try
kiwi dave said:
Could you just not tap it out the next size bolt? Probably easier than farting around with helicoils.
Click to expand...
I did play that scenario but there's very little meat in that area
 
A bike shop stripped the gearbox drain bolt on a mates Breva, only came to light when i did the oil change and the bolt was "glued in".
Took it to the nearest bike shop (Honda), they re tapped it and put in a Honda drain bolt, this only has a 10mm head on it unlike the Guzzi 17mm one, so the spanner is a lot smaller and if your inexperienced you cant get the leverage on it.
 
Kevin.NZ said:
A bike shop stripped the gearbox drain bolt on a mates Breva, only came to light when i did the oil change and the bolt was "glued in".
Took it to the nearest bike shop (Honda), they re tapped it and put in a Honda drain bolt, this only has a 10mm head on it unlike the Guzzi 17mm one, so the spanner is a lot smaller and if your inexperienced you cant get the leverage on it.
Click to expand...
I'm not worried about the drain bolt for the motor. It's the one on the gearbox, which is a 24mm, which requires a long wrench. To top it off it has really shallow threads. I haven't seen anyone post about stripping threads yet, so maybe it's all just paranoia inside my head
 
If you google this -

SK Professional Tools 88124 12-Point Metric Wrench - Short, 24 mm Combination Chrome Wrench - you should get a hit.

!!!!!!!!!

New

CDN$ 127.64 are they INSANE !

Mine was a

TEKTON 18073 Stubby Combination Wrench, 17 mm - 20$
 
Last edited:
On my BMWs, I replaced the stock drain plug with a Fumoto drain valve. Once on, it stays on and dramatically eases oil changes. I am considering one for my 2017 Stone, especially considering the access challenges.

doc
 
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