Whats causing my vibration ??? Front of truck

I had the same vibration, more than once. since vibration travels, it is hard somethimes to tell where it originates from. my left mirrors would shake & front would bounce. different times over the years it was a different fix. the last time was a u joint just behind the trans, another , my spread flat with flat spots on tires making my truck bounce, another the spring shackle I think it is called where the leaf is connected to the bottom of the steer shock was broke. I had put new shocks on too, but only cause they were original, so they needed replaced regardless. replacing parts that are long overdo even if that is not the cause is fine, as long as you dont start throwing parts at it, by process of elimination. I have been there done that, cause I did not know what else to do. hope you don't have the same dilema. wish you luck.

 

I'd start at the U-joint right behind the tranny and work back. First thing would be to hit every zerk fitting with a grease gun. Lube guys are notorious for skipping zerks that are out of reach. Double check the carrier bearing. Had the same type of vibration you have. One of the carrier bearing bolts was loose, the other was missing. Replaced the missing one, tightened the loose one, problem solved.

 

Nearly 26 months and vibration still not found

 

Not sure if this was coverd but are your king pins worn? This will cause your vehichle to wear steer tires unevenly.. Bent front axle?

 

A brake drum out of round will cause a vibration

 

One of the trucks where i work had a vibration in the drive train and they found that the front output shaft bearing is out on the transmision and tore out part of the housing in the transmision, dont know if thats your problem but you might check.

 

The Diehard batteries gave out.

 

Did you ever find your cause of vibration? just wondering. I had worn king pins years ago, but never heard any sound coming from the front end, the tires just wore & cupped real bad. I have been told spring hanger bushings can cause vibration & make a popping sound on sharp turns, but I am not sure on that.