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Thread: Tractor Fender Repair

  1. #1
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    Tractor Fender Repair

    My friend and customer Rick’s fender on his tractor cracked on both sides in the rear. On the left side the sharp cracked edges protruded from the fender, so they were a cut hazard. The first picture shows the entire fender.

    1. Fender
    Name:  1. Fender.jpg
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    I like to weld bright shiny metal so I cleaned up around the crack on the top and bottom using 1” stainless steel brushes in my Foredom shaft grinder.

    2. Removing paint with wire wheel
    Name:  2. Removing paint with wire wheel.jpg
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    I used up about 4 wire wheels, because the bristles bend over and eventually break off the wheel as shown below. The edges of the cut didn’t line up and surface was compound so the smaller wheel was able reach all areas.

    3. Stainless steel wire wheels – worn and new
    Name:  3. Stainless steel wire wheels - worn and new.jpg
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    I bought several bags containing 25 wire wheels from eBay for $6 per bag.

    4. Bag of brushes
    Name:  4. Bag of wire wheels.jpg
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    Because of the compound surface I taped some Aluminum foil to the back side to trap the shielding gas.

    5. Aluminum foil taped to back side
    Name:  5. Aluminum foil taped to back side.jpg
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    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport
    Lincoln LE 31 MP & Lincoln 210 MP

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  3. #2
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    Re: Tractor Fender Repair

    The next step was to us a picking hammer and a dolly to straighten out the cracked metal. Then I used a small c-clamp to force the edges of the crack into alignment. The last step was to spot MIG weld the edges together. I used my LE 31 MP with .025” wire to minimize burn through on the .048” thick fender.

    6. Cracked fender tack welded
    Name:  6. Cracked fender tack welded.jpg
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    Next, I completely welded out the crack. Rick asked me to leave the weld reinforcement in the hopes that it would last longer before cracking.

    7. Left top welded out
    Name:  7. Left top welded out.jpg
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    8. Bottom left cleaned up
    Name:  8. Bottom left cleaned up.jpg
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    9. Bottom view all done
    Name:  9. Bottom view all done.jpg
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    Last but not least I primed the area that I welded to prevent rust.

    10. Top primed
    Name:  10. Top primed.jpg
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    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport
    Lincoln LE 31 MP & Lincoln 210 MP

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  5. #3
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    Re: Tractor Fender Repair

    Nicely done!
    :

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  7. #4
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    Re: Tractor Fender Repair

    nice job! is that from a cub cadet?
    lincoln 125sp
    monkey wards 250 ac/dc
    miller 211 w/spool gun
    ahp 200 sx tig
    lotos ltp5000d
    of course duramax diesel

  8. #5
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    Re: Tractor Fender Repair

    Quote Originally Posted by duramax-rob View Post
    nice job! is that from a cub cadet?
    It is a 1970 Sears Suburban.

    -Don
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport
    Lincoln LE 31 MP & Lincoln 210 MP

  9. #6
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    Oct 2012
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    Michigan
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    Re: Tractor Fender Repair

    Those look like mig welds. and a steel fender so why the backer? Just curious?
    Tim
    metalcraft by moose
    Southeast Michigan
    https://www.facebook.com/Metalcraftbymoose

    Stupid Hurts!!

  10. #7
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    Re: Tractor Fender Repair

    Quote Originally Posted by moose View Post
    Those look like mig welds. and a steel fender so why the backer? Just curious?
    I believe the backer was to cut down on backside oxidation from lack of shielding gas...

  11. #8
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    Re: Tractor Fender Repair

    Quote Originally Posted by moose View Post
    Those look like mig welds. and a steel fender so why the backer? Just curious?
    Quote Originally Posted by ronsii View Post
    I believe the backer was to cut down on backside oxidation from lack of shielding gas...
    Yep

    -Don
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport
    Lincoln LE 31 MP & Lincoln 210 MP

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  13. #9
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    Oct 2015
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    South Lyon, MI
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    Re: Tractor Fender Repair

    Did you drill holes after the cracks? That really helps stop propagation of the cracks.

  14. #10
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    Re: Tractor Fender Repair

    Quote Originally Posted by a2lute View Post
    Did you drill holes after the cracks? That really helps stop propagation of the cracks.
    Not this time, I just welded past the end of each crack.

    -Don
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport
    Lincoln LE 31 MP & Lincoln 210 MP

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  16. #11
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    Re: Tractor Fender Repair

    The welds look good for FAST welds on thin stuff. Thin stuff usually requires a fast travel speed. Your stuff looks good.

    I can't do this kind of thing anymore. My left eye focuses good at a short distance, and my right eye focuses at about infinity (long distance). Can't get to an eye doctor with this pandemic thing going on, so I've just given up on wire welding that can look good. Simply can't do it anymore, till I get some good glasses.

  17. #12
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    Re: Tractor Fender Repair

    The almost blind deal in the left eye makes it a total PITA to even walk. Can't focus on the ground.

  18. #13
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    Re: Tractor Fender Repair

    Quote Originally Posted by farmersammm View Post
    The almost blind deal in the left eye makes it a total PITA to even walk. Can't focus on the ground.
    Sorry to hear about your eyes.
    I had excellent vision and didn’t require glasses at all, until my 40’s.
    Now As I approach 70 in addition to glasses, I require a really good quality welding hood to see the joint, while MIG welding with thin wire at low current. It’s a 8itch getting old!

    -Don
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport
    Lincoln LE 31 MP & Lincoln 210 MP

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