As Westyss suggests, tires can contribute. Do you know if the balancing was properly done (lug centric versus hub centric)? Most shops only do hub centric balancing these days, but Fuso's balance best with lug centric balancing, especially with aftermarket wheels.Hi has any body had any experience with a death wobble I have a 2007 fg140 its been to numerous garages and our main dealer in winnipeg is as much use as a chocolate tea pot and nobody can find what is wrong with it had all king pins ,bearings, alignment,wheel balancing and new wheels and still nothing any help would be great.
If you have alloy wheels, pay particular attention to proper torque values for the lug nuts and be sure to tighten the lug nuts carefully in a proper star pattern. This may also be important with steel wheels, but I have no experience with those.
A few years ago there were reported problems with apparently warped front brake drums on some trucks in the US. Many of those cases could eventually be attributed to uneven / over / under torquing of lug nuts by tire jockeys in shops. The uneven torquing applied unbalanced forces on the hub and brake drums leading to a shudder when braking.