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welding a mower deck

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wf3h

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Jun 9, 2011, 5:43:33 AM6/9/11
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discovered one of the supports for the john deere mower deck is torn.
any problems with having it welded? thanks much
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jamesgangnc

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Jun 9, 2011, 7:46:46 AM6/9/11
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On Jun 9, 7:05 am, j...@myplace.com wrote:

> On Thu, 09 Jun 2011 05:43:33 -0400, wf3h <w...@comcast.net> wrote:
> >discovered one of the supports for the john deere mower deck is torn.
> >any problems with having it welded? thanks much
>
> Any metal can be welded.  But the thin steel on a mower deck will
> require a wire feed welder.  A stick welder will burn thru.  Before
> you weld it, or take it to a pro welder, clean all the dry grass off
> the bottom or it will start burning, and if you're paying a pro $60
> (or more) and hour, you dont want to be paying $20 to $40 for him to
> clean off the grass before he can weld it.  
>
> I had a deck crack and one wheel was really bent outward.  I tried to
> weld it with my stick welder and after learning that the dry grass
> would start on fire, and having to clean it off first, I tried to weld
> it, but I burned thru the metal.  I took it to a welding shop and $25
> and 10 minutes later he had it all patched up.  It worked another 2
> years till the engine died.

Or weld it with a torch set. But that's becoming rare these days.

Jules Richardson

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Jun 9, 2011, 8:25:16 AM6/9/11
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On Thu, 09 Jun 2011 06:05:56 -0500, jw wrote:
> I had a deck crack and one wheel was really bent outward. I tried to
> weld it with my stick welder and after learning that the dry grass would
> start on fire, and having to clean it off first, I tried to weld it, but
> I burned thru the metal.

Mine cracked around one of the anchor points - it does seem to be a bit
of a weak spot, particularly as the decks age and rust takes its toll.
Rather than try to weld it (I was worried about it burning through, too)
I bolted some 1/8" plate over the crack top and bottom to spread the load
across a wider area. It's been like that for a couple of years now and
hasn't broken yet.

cheers

Jules

Dbdblocker

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Jun 9, 2011, 9:11:17 AM6/9/11
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On Thu, 09 Jun 2011 05:43:33 -0400, wf3h wrote:

> discovered one of the supports for the john deere mower deck is torn.
> any problems with having it welded? thanks much

It was designed to throw away and buy a new one.

willshak

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Jun 9, 2011, 9:21:07 AM6/9/11
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jamesgangnc wrote the following:
Not so much. The torch set nowadays only consists of the torch an a
bottle of acetylene. No more needing a separate air tank.
The torch mixes the acetylene with the ambient air. Plumbers still use them.


--

Bill
In Hamptonburgh, NY
In the original Orange County. Est. 1683
To email, remove the double zeroes after @

jamesgangnc

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Jun 9, 2011, 10:24:43 AM6/9/11
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> To email, remove the double zeroes after @- Hide quoted text -
>
> - Show quoted text -

That's fine for plumbers but you need both tanks to weld. I still
have a small set. I'm only passable at all welding but I found that
for general purposes a tank set is more useful. I can braze, I can
cut, I can weld, I can heat things up. Other solutions only do some
of those things.

cl...@snyder.on.ca

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Jun 9, 2011, 7:31:11 PM6/9/11
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Over the years I've found brazing a patch on works best. Usually
with an Oxy-Acet. torch, but TIG works real well too.

cl...@snyder.on.ca

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Jun 9, 2011, 7:32:25 PM6/9/11
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On Thu, 09 Jun 2011 09:21:07 -0400, willshak <will...@00hvc.rr.com>
wrote:

That works for soldering, and limited brazing - but welding still
needs oxygen - and the process is still fairly common

Steve B

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Jun 9, 2011, 9:11:42 PM6/9/11
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<cl...@snyder.on.ca> wrote in message
news:bsl2v6h7vho5ig7vk...@4ax.com...

Or MIG with a 1/8" flat bar backing plate works for me. Drill a hole at the
end of the crack to stop the crack, and put a HOT spot weld there. "Stitch"
weld the rest, using short tacks or short (1/4") welds.

Steve (Retired certified welder)


Steve B

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Jun 9, 2011, 9:12:42 PM6/9/11
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"willshak" <will...@00hvc.rr.com> wrote in message
news:l9GdnS7hwIhdVW3Q...@supernews.com...

Not adequate in attaining the temperatures necessary for OA welding. Good
for sweating and maybe brazing, but not welding.

Steve


wf3h

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Jun 13, 2011, 8:08:51 PM6/13/11
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On Thu, 09 Jun 2011 06:05:56 -0500, j...@myplace.com wrote:

>On Thu, 09 Jun 2011 05:43:33 -0400, wf3h <wf...@comcast.net> wrote:
>
>>discovered one of the supports for the john deere mower deck is torn.
>>any problems with having it welded? thanks much
>

>Any metal can be welded. But the thin steel on a mower deck will
>require a wire feed welder. A stick welder will burn thru. Before
>you weld it, or take it to a pro welder, clean all the dry grass off
>the bottom or it will start burning, and if you're paying a pro $60
>(or more) and hour, you dont want to be paying $20 to $40 for him to
>clean off the grass before he can weld it.
>
>I had a deck crack and one wheel was really bent outward. I tried to
>weld it with my stick welder and after learning that the dry grass
>would start on fire, and having to clean it off first, I tried to weld
>it, but I burned thru the metal. I took it to a welding shop and $25
>and 10 minutes later he had it all patched up. It worked another 2
>years till the engine died.

good points! Thanks much.

wf3h

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Jun 13, 2011, 8:10:03 PM6/13/11
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that's an idea...but drilling through steel has to be fun

wf3h

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Jun 13, 2011, 8:10:23 PM6/13/11
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On 09 Jun 2011 13:11:17 GMT, Dbdblocker <dbdbl...@gmail.com> wrote:

lotsa bux!

aemeijers

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Jun 13, 2011, 9:28:56 PM6/13/11
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Chuckle. I once had an 83 Mustang, and the floor under driver's seat
developed fatigue cracks at the angled parts of the stamping. You could
feel it flex as you sat down, or went around corners. I didn't feel like
stripping entire interior, and couldn't afford to pay a pro welder
anyway. I repaired it by gusseting it on top side with some 1-foot
square plates of 12-ga galvanized flashing I was able to liberate and
blacksmith into the needed shapes, with a layer of tar underneath, held
together with a whole bunch of peened-nut fender-washered (underneath)
grade-8 bolts from Tractor Supply. The patch probably weighed 30 pounds,
but it held as long as I owned that POS car. You could barely feel the
lumps from the bolts through the carpet. Up on a lift, it looked like
Frankenstein's monster.

--
aem sends,,,,

Fake ID

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Jun 14, 2011, 4:46:15 AM6/14/11
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In article <HYWdnWm8jYLPJGvQ...@giganews.com>,

Reminds me of First Car, a 76 Buick Skyhawk, bought in the late-80s.
It became hard to shift because the firewall where the clutch cable
passed through had fatigued and cracked into a star pattern. Pushing
the clutch pedal down pulled the clutch cable sheath through the
firewall, sort of--it was still attached to one of the "spokes", which
resulted in a creak. A scrap piece of sheet metal bolted over the hole
held the clutch cable in place for the rest of the car's life--which
wasn't long...

Just a couple years later, I took it to a shop to track down some
creaking and alignment problems. The guy took me down into the pit to
show me how the body was ripping apart where the front suspension
attached to it. He said it really wasn't safe to drive.

When GM imploded I was thinking that probably everyone still alive who
had anything to do with producing that POS was collecing a nice plump GM
pension.

m

mkir...@rochester.rr.com

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Jun 15, 2011, 4:37:26 PM6/15/11
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On Jun 9, 5:43 am, wf3h <w...@comcast.net> wrote:
> discovered one of the supports for the john deere mower deck is torn.
> any problems with having it welded? thanks much

The reason it broke is because the metal rusted and/or wore away.

You can weld it but you're just sticking the fatigued material back
together, and not doing a thing about the fatigue. Odds are good it
will break again in a short time.

Not only do you need to weld, you also need to add a patch to
reinforce the worn area.

cl...@snyder.on.ca

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Jun 15, 2011, 10:02:31 PM6/15/11
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On Wed, 15 Jun 2011 13:37:26 -0700 (PDT), mkir...@rochester.rr.com
wrote:

In MOST cases wear is not involved - vibration (fatigue) is. If you
make sure it cools slowly after the welding, it can be annealed and
the built-up stress relieved, Not saying it won't crack again a few
inches away. If not badly rusted I've had good luck drilling the end
of the crack and brazing it up.

Smitty Two

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Jun 16, 2011, 10:41:09 AM6/16/11
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In article
<a7c156f4-a157-4a30...@a7g2000vby.googlegroups.com>,
mkir...@rochester.rr.com wrote:

Maybe it's just because I don't know how to weld, but this is the type
of thing I'd fix with fiberglass and epoxy anyway. 3-4 layers and it'll
last at least 1500 years.

cl...@snyder.on.ca

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Jun 16, 2011, 9:18:16 PM6/16/11
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You'd have to make it stick well enough to withstand the vibration -
and that means it needs to be CLEAN. I've never seen fiberglass stick
in such an application. I've seen lots of "trys"

Smitty Two

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Jun 16, 2011, 10:52:44 PM6/16/11
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In article <8oalv69s0g8bo7la9...@4ax.com>,
cl...@snyder.on.ca wrote:

I agree, it needs to be clean. Nothing I've fixed with fiberglass has
ever failed. I wouldn't have the audacity to say I'd "tried" to fix
something if I hadn't cleaned it first. That wouldn't qualify as having
tried, IMO. You don't caulk, grout, paint, glue, or fry an egg without
cleaning first, either.

cl...@snyder.on.ca

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Jun 16, 2011, 11:17:06 PM6/16/11
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On Thu, 16 Jun 2011 19:52:44 -0700, Smitty Two
<prest...@earthlink.net> wrote:

>In article <8oalv69s0g8bo7la9...@4ax.com>,
> cl...@snyder.on.ca wrote:
>
>> On Thu, 16 Jun 2011 07:41:09 -0700, Smitty Two
>> <prest...@earthlink.net> wrote:
>>
>
>> >
>> >Maybe it's just because I don't know how to weld, but this is the type
>> >of thing I'd fix with fiberglass and epoxy anyway. 3-4 layers and it'll
>> >last at least 1500 years.
>
>> You'd have to make it stick well enough to withstand the vibration -
>> and that means it needs to be CLEAN. I've never seen fiberglass stick
>> in such an application. I've seen lots of "trys"
>
>I agree, it needs to be clean. Nothing I've fixed with fiberglass has
>ever failed. I wouldn't have the audacity to say I'd "tried" to fix
>something if I hadn't cleaned it first. That wouldn't qualify as having
>tried, IMO. You don't caulk, grout, paint, glue, or fry an egg without
>cleaning first, either.

Even clean, where most of the deck cracks I've experienced occur, they
would pop most fiberglass and/or epoxy patches

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