I have a 47 3600 with a 1/2 ton straight axle. I went with a Saginaw power steering conversion kit from CPP and am just now starting to do test drives on the truck. I have bad bump steer and it wanders on the road. It seems to be working fine, I just need to iron out some bugs. I guess it's fine tuning? I'm going to try leveling the drag link to parallel with the ground? Overall so far this kit has been underwhelming. There's gotta be something better. I was trying to save money but I'm not happy with the results to this point.
I put the exact same kit on my '49 3100. Yes, you must have that drag link level and pointing as straight ahead as you can.
Check the condition of all of your front end parts including:
Spring bushings.
Tie rod ends.
King pins.
Wheel bearings.
Steering column u-joints.
Toe in.
Some have suggested that these trucks with the power steering installed, respond well to an additional degree or two of caster.
What tires are you running? Size? Age? Condition? Radials? Bias ply?
I am running 30 1/2" tall radials and found that they needed more toe in than the 1/8" which the Shop manual calls for with 28" tires. This makes sense since toe in is not actually a function of "inches", but rather a function of angle measured in degrees. Its just easier for a "regular" guy to deal with inches.
Carl
