Constantly correcting steering

Harvard wrote:
Your symptoms (wandering at highway speeds) mimic having too little positive caster. JMO

Likely two issues here. If you have the Ford 53 chassis, off center steering wheel is the nature of the beast since only one end of the tie tod is adjustable. When the front end is aligned, a spring is loosened and does not go back exactly the same. I do not know if this might apply to any other chassis. On some model F-53 the steering wheel can be removed and moved a spline or two. On the later ones not so as they are keyed to go on one way. The joint just off the steering box where the column and box meet can be loosened and moved a spline or two also to correct the problem.

I also had 1 degree of positive caster added. Solved the constant steering correction problem. That fix did not work well when I added a steering stabilizer later, the positive caster and the steering stabilizer conflicted with each other, so I removed the stabilizer and all was well again.

Another great help for the steering problem is to add a rear track bar if you do not have one. It stops the "tail wagging the dog" which is a major cause of the steering corrections as you chase the wagging tail.

If you are having the front end aligned ask for some additional caster. You will notice heavier steering at low speeds, but nice and firm at highway speeds. I have called the Ford hotline for RV chassis and asked if this will cause any damage or problems and they assured me no, it is fine. Every alignment shop I have spoken to about adding the positive caster also agree it is ok to do and commonly done.

I would strongly suggest a rear track bar also if the budget allows. They cost ~$600 or less and I installed ours myself. Any decent mechanic or handyman can do it in a couple of hours.