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Two thing could be wrong - one the steer wheel nut could be loose allowing the wheel to turn free or the second is that the steering control rod or shaft is broken.
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gregg it is best to allow a vehicle some right hand lead due top crown of most roads. road crown is designed to slope right and factory vehicle alignment usually follows slope. if u fall asleep or lose steering control of vehicle road crown" right float" will lead to ditch instead of oncoming traffic. if this really bugs u ask alignment technician to make left wheel .2 degrees more positive camber then right wheel and request caster be set no greater then .3 degrees difference between the 2 wheels request printout to verify. this should remove lead considering there is no tire pull. general motors compensates for road crown using caster typically but i prefer camber compensation
First make an appointment for a front end alignment which will be required after replacing the ball joint. Securely support the vehicle under the lower control arm at the outer end, the end nearest the tire. The upper ball joint is attached to the upper control arm with 2 large nuts. Under the nuts are cams with hex heads for adjusting caster and camber. Mark the position of these cams in a way that will allow you to reinstall them somewhere near the same position. Next remove the outer end of the joint from the steering knuckle an then remove the 2 nuts and both cams from the control arm end. Reinstall and get that alignment asap !
Alignment has alot to do with the tires not shimmying.. Like zero toe setting. Loose componants like tie rod ends and the idler ar worn. You can ck for excess front end play by holding the front and back of the wheel and pushing and pulling on it, like rocking it. OR have someone rock the steering while you watch where the play is from underneath. By rocking I mean turn the steering wheel back and forth. Look at all th joints and pivot points for excess play, which is, movement not immediate to the rest of the steering system. Tire balance is very important. Wheel hop is a sign of a bad tire and it overtaxes the shock absorber. Shocks don't cause shimmy because they are a vertical movement controlA shimmy is lateral or side to side.Wheel balance weights must be spit. If a 2 oz. weight is needed to balance the tire, Oe once should be on the inside of the wheel and one ounce on the outside directly across from each outher.. Loose wheel brgs will cause shimmy, but they would not last long. Caster setting on the wheel alignment will also cause shimmy. Like on a shopping car. too much caster causes the wheel to start fluttering and is very hard on other componants. This may be why you have worn tie rod ends and a bad pitman arm. Worn control arm bushings and ball joints directly affect titre wear and can only be feltwhen the front end hits a dip and detected by side wear on the tire edges. Summary: replace the tie rod end and have the car aligned. Good Luck, -Ned_ sorry about the book
Have the technician replacing the tires put the best 2 used tires on the rear of the cars and put the new ones on the front. You do your steering and braking with the front tires and if you were to have a blow-out, you want it to happen on the rear tires so that you can maintain maximum control with the good front tires.
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