so its 45 years old and something broke?????? well the biggest load on the steering system from the driver toward the road is around the steering box or pitman. Things look a little rusty so while apart I think you should carefully go thru every component part of the spindles, ball joints, etc. Also on a 4x4, while in 4x drive , the u-joints will have a tremendous force generated when the joints are over about 3 degrees out of alignment. this over a period of time is like a sledge hammer hitting those components leading back to the steering wheel millions of times---how long should it take for a guy with a sledge hammer to destroy a few skinny bolts?????? Or a STUD with a sledge???????to destroy some toy studs?????? Need more coffee--------