Check the alignment. If you went to a shop and you did not get the printout from the machine, you don't know what the alignment is. Tracking is affected both by toe-in and caster. A lift will screw up your caster.Phils67 wrote:... It has had this issue since i lifted it. ...
tgreese wrote:Check the alignment. If you went to a shop and you did not get the printout from the machine, you don't know what the alignment is. Tracking is affected both by toe-in and caster. A lift will screw up your caster.Phils67 wrote:... It has had this issue since i lifted it. ...
This is a '64 that still has Ross steering? Details in your sig would help. Is it like the CJ Ross steering with a bellcrank in the middle and a tie rod to each knuckle, or a single tie rod between the knuckles? With a lift, the angle of two Ross steering tie rods could be severe, and could cause a bump
Original front shackles with new(ish) bushingsSJTD wrote:Extended shackles or stock length? Long front shackles kill your caster.
Angle shims installed to help the driveshaft angle? These will give you less caster and can cause what you're experiencing.
Maybe worth trying some angle shims, thin side forward if springs are on top, to add some caster.
If you have the bell crank Tim's talking about how are its bearings?
Tire size is currently 35x12.5R15. Using used federal couragia mt's which i wouldnt gift upon my worst enemy.. I will have to bring my angle gauge home from work tomorrow and check it. Whatever the cause is has me driving like a grandma anymore. The other day i had to lock the brakes up on main street and i spun 180 into the other lane. Without seatbelts either. Luckily it was early and there isnt much traffic in my podunkwhitetrashmountaintown that early or it could have been bad. I have been considering going back to stock height and this is one of the main reasons persuading me in that direction. Id be more open to keeping the lift if i could cure this issue. I will have to check the angle. I didnt think it could change since the axle bolts flat to the bottom of the spring. Higher curve to the spring or not, the mounting point of the diff remains the same, right?Stuka wrote:What you describe that the passerby saw thats a steering oscillation that is most typically caused by bad caster angle. You typically want about -4 to -5 degrees of caster (But this depends on tire side). The closer you get to zero, the worse your steering will be. You can check the caster angle yourself if you are parked on 100% flat ground, and put an angle finder on top of the knuckle.
Bad toe-in can also cause this, but not nearly as severe.
The box can cause steering wheel play, but it won't cause what he is having. The truck should be able to roll down the road with NO steering box and track straight and true.SJTD wrote:You mentioned all the new stuff on the axle. What about the box? Has it been adjusted properly?