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Subject:Re: Transmission Case Corrosion, Deterioration Repair, Ground Paths
From:John Rodgers
Date:Sat, 2 Apr 2016 15:56:47 -0500

Be sure there aren't any significant dis-similar metals contacting the
case. Thats a sure setup for corrosion, and I would look out for inter-
ganular corrosion in aluminum castings. That was always a bane for
airplanes. Same for cast aluminum parts on cars, but when something fails,
at least you can park it safely. Kinda hard to park a plane on a cloud when
something breaks!

John
On Apr 2, 2016 14:48, "Neil N" <musomuso@gmail.com> wrote:

> Hi all.
>
> On my '88 Westy, transmission case material at the shift linkage
> bushing mount point (image, not tranny in question):
> http://tinyurl.com/hfr38vo
>
> and front mount bracket to transmission mount points (image, not
> tranny in question):
> http://tinyurl.com/zyecqly
>
> is disintegrating and crumbling away
>
> I'll post pics of actual corrosion soon.
> I'm sure this issue is nothing "new" but does anyone know if:
>
> - depleted material at mount points causes, in part, a poor ground
> path to starter?
> - these mount points can be filed flat then furred out with a
> washer(s)? e.g. at tranny front mount bracket? Use stainless steel
> washer?
>
> As an alternative or "safety", re this archive post:
>
> http://gerry.vanagon.com/cgi-bin/wa.exe?A2=ind9404&L=vanagon&P=R13485
>
> and other comments re: ground paths, would connecting just 1 new large
> gauge ground wire from the battery to the drivetrain be of any
> benefit?
>
> As a side note, given the areas of rust I see at underside, and this
> case corrosion, I have to wonder if this bus sat unused for some time
> in a wet field with long grass or similar.
>
> Neil.
>
> --
> Neil n
>
> Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>
>
> 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>
>
> 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/>
>
> Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>
>