I have a 3-53 diesel, whose pan was damaged slightly because I dragged
it 8 feet on concrete and that slightly damaged the oil pan. The corer
slightly "folded" and I tink that it caused a crack to develop. There
is a minute crack now, through which oil drippred slowly. To give you
an idea, in about 10 days the bottom pan leaked about two quarts of
oil (which I contained, being a green and environmentally friendly
person).
Anyway, I took the oil pan off today, and cleaned it to the extent
possible, with pretty much no oil remaining on the inside or outside
near the crack.
So, now I have a question of what is the best way to weld it. It is
stamped sheet metal, I would say 16 gauge or so (just guessing). The
crack, or abrasion, is in a corner.
I am thinking, use 1/8" of 6013, at 100 amps, and weld from inside?
Or should I use some fun rod like Nickel 55 or Nickel 99? Cost of rod
is not material, as I have a bucketful of it.
i
I would recommend brazing it rather than welding. You could easily
burn holes in it unless you are skilled in welding thin metal. The
braze will work fine for that application.
John
Really? With brazing there is no danger of burnthrough, even if one
isn't that careful, and the braze will be leakproof.
Although I suppose that welding steel with nickel rod is probably closer
to brazing than to welding. But silver probably has better penetration
of the crack.
What is the standard way to repair such cracks? This cannot be the
first time the issue has come up in the history of the internal
combustion engine.
Joe Gwinn
That'd be my choice too . Cover everything but the area you're brazing with
wet cloths to control heat and minimize distortion .
A twisted oil pan can be a bitch to get sealed against the block ...
--
Snag
Learning keeps
you young !
Assuming youve the oxy propane/acetylene kit, brazing is the safest way
to repair it. you will need obviously the right flux and brazing rod.
Dont try to arc weld it.unless youve the tig? kit. Rod and mig is too
crude with poor heat imput control.If you dont have the right gas kit
get someone to do it for you who has.
With brazing your after putting a 1/8in thick layer of brass over the
cracked area. with a bit of overlap.
do it from the outside.from the inside it will be much more difficult to
avoid burning yourself.
A skilled brazer will take only 10 mins to fix it.
Ive brazed up all sorts of repairs from cast iron to s/steel to ordinary
steel.
Dont try to gas weld it as on cooling it willshrink then crack. Let us
know how you got on.
Ted.
In Dorset UK.
1/8"?? No, no ... as small as you have - 1/16" if you have it. Weave
like crazy to avoid burn through. That is, assuming that you are dead
set on welding and won't braze like everyone says. Bob
Joe and Gunner, just for your information, I ended up brazing it with a
flux coated brass brazing rod. It my first time I was brazing, and it
is truly a great process for filling cracks! I am very impressed, it
is like a little miracle.
Thanks guys.
The pan is now filled with water, I will wait a while to see if any
water comes out anywhere.
The next question is, is there some way to filter 3 gallons of
oil. The old oil ain't so bad looking, just got some dirt and stuff in
the pan. Not critical but would be nice to reuse and recycle.
i
You have already done the deed but I would suggest that brazing is the
only way to go. It flows nicely into the cracks, seals the unit. Welding
thin material tends to burn through at the worst or leave an oxidized
material with much porosity.
If the oil is relatively clear but has large chunks of crud, simply put
a paper towel folded into a cone in a funnel. Or use a piece of a decent
quality bed sheet. High quality sheets have thread counts up to
1000/inch (Sears horsepower number, they count multiple strands in one
thread). Suggest you ask NICELY from SWMBO for an old sheet, taking it
off the bed means you don't get to sleep there.
Neither. Acetylene/ Oxygen or Tig is the plan. A/O has the advantage of
assisting the correction of the shape first. 100 amps is
way too hot. 50-60 amps with Tig is about right.
Steve
I wouldn't use electricity on it, even if you're good. I'd use an OA
process, and someone who is more knowledgeable about it than me will
recommend one.
Steve
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