4104 Toe in discrepency & Vickers Power Steering Booster Cylinder overhaul

[luvrbus]

On straight axle vehicles usually the caster off will wear a tire to the inside from years of beating on the pavement and pot holes bending the axle up.Use a dial indicator and check the wheel bearing run out if to loose they cause a tire to wear on the outer edge.I don't think the 1/4 in toe in was your problem with a tire wearing on the outer edge       

[chessie4905]

The 4104 caster cannot be adjusted. If you install the link assy. from a  4106 or4905, then you can adjust it. That is what we did with ours. Before doing that, we used tapered wedges on axle beam

[bevans6]

Check also that the steering box and power assist is centered - they often have a "return to center" effect built in, and my wandering problem was down to an off center steering box.  I had to center the steering box per the manual, set the front tires in line with the chassis and then shorten the drag link by over an inch to get it all to work out. 

With respect to toe-in, make sure you are measuring in the same way as the manual wants you to.  When I was racing, we did toe in/out based on the wheel rim.  It was repeatable, and we did it by building a string box around the car, and measuring from the string to the wheel rim.  My MCI manual says to chalk the tread of the tire, scribe a line, and measure at the tire tread, and 1/16" toe in is the spec.  The alignment shop I took it to did it on computerized pads, and did a four wheel alignment with read out in degrees.

[luvrbus]

The cheap little line lasers are ideal for setting the toe in that all I use now