Now I've got to thinking it may be something in the steering column arrangement. RAVE page 57-3. There are various UJ's and a rubber coupling also some splined couplings, I wonder, just wonder, whether some of these are past their 'sell by' dates and creating a vibe in the steering gear as many trucks are now getting 'ancient' and likely to suffer these types of problems.

I have another theory, my vibes never started until after I fitted the new TF steering shock, I wonder whether the shock is too strong.

 

My steering wheel doesn't shake so I've pretty much ruled out any steering component.

 

Was there ever a resolution here? Having the exact issue

 

Almost 100% out of round treadwright tires. New tires is the fix.

 

Drive shaft? Warped rotors, frozen brake pistons, unbalanced tires, worn tire rod, wheel spacers misaligned, motor mounts etc. I hope its not the "etc".

 

The list is ridiculously long on this vehicle lol.