38 1.5 ton Are your drive shaft yokes in phase ?? If it was that don't think it would clear up like that. How about toe-in measure it for no more than 1/4 in on the front. Have a friend who understands what you are looking for follow you maybe he will see it. Nothing out of round ?? They say fan blade can really shake,never actually caught one,saw where it flew thru the hood long ago. Carrier bearing secured and in good shape,drive shaft in balance,pinion bearings,in good shape ?? Harmonnic balancer rubber in good shape and round ?? Are pressure plate bolts shoulder bolts that center the pressure plate ?? We used to line each others wheels with balance weights half way around don't think it's that !! Let us know when you find it !!! How about tires and wheels that are not turning in a true plane,like lug wheels can do if not tightened evenly,dirt or rust in the way. See if rear tranny main bearing is in good shape,what about a thick and thin brake drum,saw a mud dobber nest on a drum somewhere truck setting for a long time. Sometimes big rocks get stuck between the duals. saw a pair of wheel weight pliers left in a 10.00-20. We used to spread big tires and hold open with a big line wrench to work in there . how about too many balance beads in a tire ??
Last edited by fixite7; 11/20/2022 1:36 PM.
