Welding JD750 frame

[DeereDoug]

I bought a used machine and noticed recently that it has a cracked frame right before the front axle. I reckon that I tear down machine come winter, mig weld and fish plat weld over the crack. Does that sound good enough?

 

[Shield Arc]

Make sure you use oval, or diamond shape fish plates. No 90-degree corners!

 

[DeereDoug]

Ahhh yes, I am no welding expert but this is what I had in mind.

 

[Shield Arc]

I am no welding expert

Me neither, I'm just a hobbyist!
Here are a couple good examples. Notice on the second picture how the welds are arced at the points of the fish plate?

 

[DeereDoug]

Ahhh, never seen it welded like that.

Thanks.

 

[Shield Arc]

That is on a excavator boom, a lot of stresses, and abuse on them!

 

[Arc weld]

Is that called a "handle bar" weld like a handle bar moustache?

 

[Mysfyt]

Is that a crack in the lower left corner? Might need to address that also.

 

[Deere Dude]

Make sure you use oval, or diamond shape fish plates. No 90-degree corners!

Great idea. I never knew that and it makes sense.

 

[DeereDoug]

I was looking into getting a Hobart MIG welder, but want to wait until my building is up and wired into the house. I have used ESAB welders before, but they are pricey. Are Hobart any good? Any other models I should look at??

D.