Hello everyone, I'm new to this so please excuse any stupid questions in advance. I bought a 1986 single cab F-350, 4x4 6.9 with T-19. I have a few questions if someone would help me.
1- When the truck goes down the road it off tracks, do you know what I mean? Like it's crab walking or traveling sidewalk, I don't know the technical term, but always assumed that was a bent frame, I really don't think the frame is bent through, I bought it from a friend and he didn't know of any accidents and it clearly has original paint and body with no signs of frame damage upon cursory inspection, could it simply be a front end alignment?
2- What tires should I have on her if the frame isn't bent? The door sticker is unreadable, I had a 82 Bronco when I was a kid and put 33x12.50x15 on it, and the tires would just rub the fender, don't want that issue with this tractor, yeah I said tractor because basically that's what she is. Thanks in advance for any help, Tom

 

Hi Tom,
I would suggest you check the rear springs for a possibly broken center bolt. This would allow the rear axle housing to not be parallel to the front wheels and produce the condition known as "Dogtracking". Let us know what you find, thanks.

 

Someone may have improperly serviced the springs or changed the rear differential. First examine all fastening points for the leaf springs. I doubt the frame is bent.

 

Thank you very much for your help. Tom