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 How Screwed am I? Stripped Gearcase oil plug?

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Pete Roper
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Mon Jul 07, 2014 11:43 pm

Nah, I really like Time-Serts but they are pricey, thassall.

Pete
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WCB
Biondino
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Tue Jul 08, 2014 5:15 pm

I just went through this on my Stelvio. The dealer over torqued and stripped my transmission drain bolt. I used a time sert and it worked beautifully. Took a total of maybe 10 minutes to install and is better than the original in the case.

The hard part for me was removing the center stand frame and exhaust to get at it. I've used helicoils in the past and time serts. IMO time serts are superior.

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After drilling and tapping the case, I hosed out the transmission through the filler plug with WD40 to rinse any swarf out. Also hit it with a shop vac. Very minimal material ends up inside.

All done...

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Steak
L'Innominato
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Tue Jul 08, 2014 5:23 pm

You do good work Doug.

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2012 MOTO GUZZI GRiSO 1200SE

2013 MOTO GUZZI STELVIO 1200NTX - Orange Blossom Special
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WCB
Biondino
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Tue Jul 08, 2014 5:42 pm

Thanks, but a trained monkey could have done that repair. The hard part is taking a deep breath and not freak out as you're running a drill bit into your transmission. The first revolution of the drill is the hardest. Once it starts to bite, you're committed one way or another.

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NorthBayGriso
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Wed Jul 16, 2014 3:23 pm

Well, based on the above discussion and recommendation of the local shop owner that's going to do the work, I opted for a Time-Sert M10 X 1.50 Metric Thread Repair Kit; it'll be here Friday. The kit and my bike will be going into the shop on Saturday for work on Monday. I think the repair kit will end up being more $$ than the repair itself.

Moto International said that they use Helicoils on this kind of repair all the time, but the Time-Sert just seemed to be the better, more permanent [and more expensive] solution.

Soooooo, hopefully I'll be back on my bike early next week!
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NorthBayGriso
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Thu Jul 24, 2014 9:13 am

OK - having had it back for a couple of days, I'm finding a very slight leak coming from the Time-Sert plug.  Perhaps 2 drips overnight; the drain plug has a slight sheen of 80w-90 on it.

Is this normal?  I'm thinking I should ask the shop to re-do their work, but only if this is a Bad Thing...


Last edited by NorthBayGriso on Thu Jul 24, 2014 11:01 am; edited 1 time in total
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Uzidzit
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Thu Jul 24, 2014 10:51 am

use a new washer? it should seal outside of the repair area
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NorthBayGriso
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Thu Jul 24, 2014 11:01 am

New washer installed. That's why I suspect that the oil is leaking afrom the pan-Time-Sert interface.
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Uzidzit
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Thu Jul 24, 2014 5:13 pm

is it a rubber lined one or a crush type
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NorthBayGriso
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Thu Jul 24, 2014 5:31 pm

Rubber-lined, new from the dealer.
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Uzidzit
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Fri Jul 25, 2014 4:37 am

try an after market pressure sealing washer from mc master carr I will try to get you the number in an hour or two it will be just the next english size larger than m10 , this has a larger rubber seal and will seal outside the repair area...my guess is the factory one is not centered well, it is also a smaller rubber element than the replacements from parker I use
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NorthBayGriso
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Fri Jul 25, 2014 9:17 am

Excellent - thanks for the assist!
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Uzidzit
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Sat Jul 26, 2014 3:19 am

try thesse
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sorry for delay I was on the road
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Grisodude
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Sun Jul 27, 2014 1:12 am

Hey Northbaygriso
After reading all this hope all works out OK please let us know.
All who replied, man awesome.
What a site.
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NorthBayGriso
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Sun Jul 27, 2014 7:59 pm

Status: short-term solution found, will evaluate possible longer-term solutions.

Basically, after consulting a couple of local non-GRiSO bike shops, I drained the transmission, applied some thread sealer to the drain plug, refilled.  No more drips, no more seeping.

I'll take it to work tomorrow [with proper warm-ups!] and see how things end up.
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Uzidzit
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Sun Jul 27, 2014 9:00 pm

you can also go to a conventional aluminium crush washer, what is happening is the molded in o ring is not quite big enough to span the outside of the repaired thread area and obturbate on the flat surface , that is why i suggested going up just slightly .5mm on the sealing washer it has a larger diameter element which spans a larger diameter counter-bore type surface. Pm me with your address and I will mail you a few 7/16"sealing washers,

will be thursday though, before I am home...just hold it centered on the drain plug while you tighten (may not have to) and I think all will be fine...

I do not know if I forgot to mention or not senility being a bitch, but I usually coat my inserts with retaining compound locktite 620
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BruBon
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PostSubject: Re: How Screwed am I? Stripped Gearcase oil plug?   Sun Oct 30, 2016 6:11 am

Uzidzit wrote:


the real problem is there is a gear shaft right over the drain and drilling and tapping is gonna be a bitch as the tap cannot project into the transmission very far,  you may have to thread partially and the shorten the time cert tool and go a bit further, and repeat this process several times then set the time cert with a retaining compound to ensure no weeps...it is a bitch to destroy a time cert tool set to do this but it beats pulling the tranny.


Great info Uzidzit. So the tap can't project into the case enough.You mention the time sert tool may have to be shortened. Do you mean the tap may need shortening because it's tapered? Just ĺearning about this type of repair so I'm unsure about a couple of things.

Thanks!
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