Control Arm Replacement

[MeanGreen86]

While my lj was in the transmission shop they found this nice crack in my passenger front lower control arm mount. They did a great job of welding it back together but I’d like to replace both of them regardless. I’ve ordered new brackets and the control arm skids. I would call myself a competent welder but I keep reading mix things about whether or not you need to prep (heat) the axle. There’s plenty of threads on here about the bracket to use but I cant seem to find any tips on prepping the axle. Welder is a 220 Miller.

Thanks

 

[Rec_Rider]

You can weld directly to the axle tubes without any issue (no preheat). The pumpkin is a different story since it's cast.

 

[Mike_H]

While my lj was in the transmission shop they found this nice crack in my passenger front lower control arm mount. They did a great job of welding it back together but I’d like to replace both of them regardless. I’ve ordered new brackets and the control arm skids. I would call myself a competent welder but I keep reading mix things about whether or not you need to prep (heat) the axle. There’s plenty of threads on here about the bracket to use but I cant seem to find any tips on prepping the axle. Welder is a 220 Miller.

Thanks
View attachment 274759

Burn it it..no problem at all. You might want to stitch weld, just to keep the heat to a minimum so your axle tubes don't turn into pretzels...

 

[MeanGreen86]

Burn it it..no problem at all. You might want to stitch weld, just to keep the heat to a minimum so your axle tubes don't turn into pretzels...

My plan was to stitch weld, thanks for your input.

 

[MutantNinjaTJ]

As said above the tubes are thin enough to go without pre heating. You already know not to run the bead downhill.

 

[MeanGreen86]

As said above the tubes are thin enough to go without pre heating. You already know not to run the bead downhill.

Yep, weld up!