If it were me:
1. Cut a little plate the size of the indent behind the hole. Drill it to size. You might have to monkey it up in there. I think I remember the top part of the pocket not having a full plate above it, so there is a chance of access.
2. Weld the proper size nut on that plate’s backside. I believe it’s 3/8” fine thread (correct me if I’m wrong, all).
3. Drill 3 plug weld holes on the cab pillar around the hole opening.
4. Plug weld the little plate with the nut in place.
If you’re in primer, you’ll burn a little primer, but sand it out, reapply, and sand the repair smooth.
If that doesn’t work, I’d cut the face of it out, weld a nut in and weld it back up, steel work it, and reprime.
Or…
Oversized drill the hole so the nut fits inside the hole and weld it in. Good penetration will be key and difficult to do because of welding on the wrong side, different thickness of metals, etc.
Anyone else?
Occam’s razor, anyone? Simpler ideas?
Last edited by Fox; 10/05/2022 5:18 AM.
