ok so ive read all the threads on death wobble and i've tried everything and i still cant get it to go away i've replaced my steering gear box put a track bar in new bushings and everything every where new wheel bearing and seals aligned balance everything and the only thing i havent done is the shims but could not find out if you only shim it if they are worn out cus i replaced everything bought the whole kingpin rebuild kit including tree's
thanks
nick

 

What are you working on? Assume that it is a king pin Dana 60?
What did you use to install this under the current vehicle? Have you perfrpmed a shackle reversal yet?
Trac bar could be loose, or the caster is off. Where is the caster set at?

 

sorry its an 89 F250 6in suspension 3in body 40in tsl's no shackle reversal yet and i didn't know there was a camber adjustment on a kingpin front but replaced the bushing in the shackles and the track bar and the part i cant understand is it didn't do this when i first did the swap and then all the sudden it started and i haven't been able to get it to go away im gonna try the shimming today and make sure my kingpins are tight

 

Shimming the king pins could be where the problem is, especially if the boggers are getting some wear on them. 40 Inchers are pretty big and have some weight that requires some control. If they start to wear funny, they can move a lot once they get spinning.

I noticed a fair amount of runnout on one set of boggers, and I simply broke than down, rotated them on the bead and re seated them. Small fix but too k care of similar issues on one of my rides. This type of tuning take some patience and time.

Be carefull when installing some shims under your D60 king pin cap. This can happen if you are not careful:



A stock steering arm can be cut and modified to become a much better spring cap:



It will look like this when complete. No flex and a far better seal here:

 

I'd be lookin at that trac bar and related componets. Have a friend come over and push on side of truck and verify that their isn't any movement in trac bar system. Also do a floor jack up and down and watch for movement. Have your friend do the moves up and down while you watch the little things. Been their and done problem and big tires find your weak links. Good luck!

 

thanks for the info guys i shimmed the king pins and my death wobble is gone finally when i first did i i thought you guys said to put 4 on each side not 4 all together so i tryed it and couldnt get the cap to go down so i took two out and put 2 on each side and it works perfectly
thanks for all the help
nick

 

I always remove the TRE when I shim them. That way you can feel if it has been shimmed it into a bind.