[TheForge] gas tank repair

[Bruce .]

A couple thoughts:
Had you considered fabricating a replacement?  Some guy posted photos of
one he fab'd from aluminum. for the SA-200.
If you're going to get a lot of use from this welder, fixing the tank makes
good sense.  But a gas tank is a gas tank.  You can get a used portable gas
tank for a boat, dirt cheap, and a new one for an affordable amount:
https://easttexas.craigslist.org/search/bpa?sort=rel&query=gas+tank


Bruce
NJ

On Thu, Jun 22, 2017 at 3:52 PM, Charles <xlch58 at swbell.net> wrote:

> I would suggest after repairing it to fill the tank with gravel and shake
> the devil out of it to remove any loosen any remaining rust.  They also
> sell a liquid tank sealer I would suggest as well.   Motorcycle shops will
> sell it.  This can prevent the problem from coming back.
>
> Charles
>
> > On Jun 22, 2017, at 10:12 AM, Dan Brewer <danqualman at gmail.com> wrote:
> >
> > Suggested repair. Remove tank from unit. clean the inside with a solution
> > of hot water and TSP.  The TSP will remove residue from the inside of the
> > tank.  Locate the holes on the tank an clean the area around them with a
> > mechanical action.  , I have used a flap sander with 200 grit If you can
> > fill the tank with an inert gas that will reduce the chance of explosion.
> > The use a good flux and an acid core solder. depending on the size of the
> > hole you may need a patch. or consider replacing the entire bottom of the
> > tank.  If replacing the bottom of the tank cut the bottom out leaving a
> lip
> > that will allow you to use this tool on it
> > https://www.harborfreight.com/air-tools/specialty-air-tools/
> air-punch-flange-tool-1110.html
> > . This will give an edge to solder on.  I use this flux with great
> sucess.
> > http://www.homedepot.com/p/Oatey-1-7-oz-Lead-Free-
> Tinning-Flux-303742/100347302.
> > I would use an electric soldering iron like this one.
> >
> > https://seattle.craigslist.org/tac/tls/6180917690.html
> >
> > Have fun with the repair
> >
> > Dan In Auburn
> >
> >
> > On Thu, Jun 22, 2017 at 7:15 AM, C&J Allcorn <jallcorn at suddenlink.net>
> > wrote:
> >
> >> I've got a maybe 40-50-60 year old SA-200 welder and discovered a leak
> in
> >> the bottom of the gas tank recently (obviously caused by years of
> >> condensation, rust, etc.).  It's a good old stick machine and I'm going
> to
> >> need it for a fencing project out on a ranch in the near future.
> >>
> >> I looked up the cost of a new tank and I'd rather take a stab at repair
> >> than replacement.  Haven't taken the tank out yet so don't know how
> large
> >> the affected area is but suspect if it has rusted thru at the lowest
> point,
> >> that likely there is a "rust-affected" zone adjacent, probably at least
> a
> >> couple inches in diameter from the actual hole.
> >>
> >> I'll probably either fill it with water to weld/braze/solder - whatever
> -
> >> due to potential explosion hazard or possibly inject nitrogen.
> >>
> >> The metal is probably pretty thin and while I'm a pretty good hand with
> >> TIG, I know my limitations, especially on really thin stuff.  So that
> >> leaves braze or solder?
> >>
> >> What's the best way to repair that gas tank?  A patch of some sort?
> >>
> >> James
> >>
> >> Paris, TX
> >>
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