Test the damper blade adjustment first-there should be no fore-and aft motion
possible where they go through the clanmp on the chassis. If they are loose,
adjust the litle weges by loosening the two bolts on the clamp, move the
wedges toward each other and tighten. If the damper blades are worn
(concavities where they rub on the wedges) replace the blades and wedges. If
this is not it, test the king pins& bushings by grasping the wheel (while
jacked up) by seizing it at 12 and 6 o'clock and trying to wiggle it--any
motion there means new pins& bushings. I have heard of worn tires doing it,
and being cured by remounting the tires inside out.
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