Military Vehicle Repair: CUCV M1010 Shimmy, steering damper, wheel assembly

Question
I get a Shimmy in my truck at slower speeds. I`ve replaced the steering damper, Shocks, and check for tire pressure of  80 PSI rear and 45 PSI front on my M1010. Any ideas on whats causing it. I can feel the shimmy in my steering wheel, but the whole cab shakes.

Thanks

Terry Soden
Former CPL of Marines

Answer
Shimmies like you described are almost always caused by the tire/wheel assembly.  Either a defect in the tire(s), a bent rim, out of balance assembley or improper torque on the lug nuts will cause it.  A quick check is to rotate the tires front to back, ensuring they are torqued properly.  If that cures the problem, then you know it was the tire /wheel assembly.  If not, carefully inspect each component of the steering system for looseness or damage.

Semper Fi