Frame crack and other frame issues

[ns1113]

Hello,
I have a 1967 Overlander that I have removed the belly skin to start applying por 15 to try an persevere frame as long as possible and noticed a couple spots that need attention.

First is the A frame, the metal bar that runs perpendicular to where the A Frame starts to for a triangle is rusted through. In the right bottom side you can see silver where its rusted through. Can you just cut out and weld in new steel? Its the picture where you can see jack.


Second and what I am more concerned about is a crack in the frame near where outriggers next to steps are welded. You can see its cracked through frame and it looks like someone tried repairing it awhile back with a plate on the bottom. I am wondering if its fixable and if so could be as simple as sistering/welding in plates on both sides for reinforcement?


Third issue have an a couple outriggers that need replaced one has rusted a hole in the frame. Can I just spot weld hole and weld in new outriggers without removing frame?
Thanks,
Nick

[sgschwend]

You can repair the frames as you have suggested. I have done this for my trailer. The guidelines I try and follow:
1) provide full access to the area to be repaired,
2) grind down to clean metal,
3) cut the new part to provide full coverage, extend the repair beyond the damage (think about what that part is doing and make sure there is enough new material to do the job better than original (in latter years AS upped there frame steel),
4) stitch weld, 1" then a 3" space,
5) add new parts in places where the span was too great to help with the load,
6) go up a couple of metal thickness steps to add strength while allowing the welder to match the heat setting for both the old and new steel.

[ITSNO60]

A couple things to note when fish plating , always round the corners of the fish plates, 90 degree corners are a no no.(stress risers) If the fish plates are thicker than the base material, start welding on the thicker material and wash the weld into the thinner.

here's some good reading:

https://www.trailer-bodybuilders.com...s-truck-frames