Matt42 "I'm still tweaking the bar length vs the drag length equation to get the steering wheel centered."
When I installed mine, for centering the diff, I tied a nut to 2 lenghts of string and taped them to the fenders centering the nuts on the hub centers then adjusted the bar. Jounce the suspension a few times then double check.
As far as centering the steering wheel, I loosened the clamp nuts on the adjustment sleeve on drag link just enough so it was able to be turned, took down the road, stop tweak, repeated until I had level then tightened the nuts.
Hope this helps. I can't stand a steering wheel that's not centered either.
Joe: Help me understand what you did, because I think it's key to solving the problem or uncertainty I may have. What I think you did is this:
1. Using two two lengths of string, you tied one nut to the end of each string.
2. Then you taped (or somehow fastened) the other end of each string to the inside of the fenders so that the tied-on nut was centered on the axle.
3. Or, because the front differential isn't centered, you figured out the length that each string should be so that the nut should be centered on top of the differential housing. Then you taped or fastened the strings in place to the fenders.
4. Then, using the location of the suspended nut, adjusted the Gen 3 track bar until the differential was centered under the nut-on-strings.
5. The tidying-up to center the steering wheel was done with the drag link.
Do I have this right?
What I have done so far is this:
A. I measured the distance between an accessible spring perch and the frame or fender, on each side. It was slightly different on each side, as expected.
B. I took the average of the two measurements and cut two small pieces of 1/4 plywood that size to use as templates.
C. I adjusted the Gen 3 track bar until the plywood templates fit about the same on both sides.
D. I'm still tidying up the drag link to make the steering wheel straight. But finding a flat, straight road here is a pain, because all the roads are also used for flood control and have high crowns. It's really close now, but I am not certain that the truck is tracking straight. With the disc/drum brakes, stopping isn't always a good clue.
I got really tired of alignment shops making settings based on what seemed to be whatever orientation the wheels were in when they drove the car or truck on to the rack. They kept telling me that having the steering wheel 45 degrees off was normal. If it was normal, why didn't it come that way when new?