my arm is killing me! please help

Be sure the tractor and cab air-ride levels are properly adjusted. Modify the seat if the fore-aft isolator "chugger-snubber" does not provide several inches of smooth movement. Disconnect the seat shock absorber if it is making the up and down motion too stiff. You must isolate your body from the motions of the truck.

Up and down vibrations while seated result in motion by the spinal column, forward tilting of the head around the neck joint, and forward movement of the chest area around various vertebra. To return to the normal position, your back muscles must continually contract. This continuous muscle activity makes you tight and sore in your back and neck region.

Use an after-market lumbar support device to put a curve in your back, thus pressing your upper back against the seat. Tilt the seat back. Make the seat back carry the weight of you upper body rather than leaning forward with the weight of your head and shoulders on your chest. Sit back and relax.

Finally, neck and shoulder pain can be the result of whip-lash caused by hitting the pin too hard when hooking to a trailer that was dropped high by one of your co-workers.

 

You might look at the lumbar support portion of your seat. I had a seat with worn or broken lumbar support. The seat put pressure on the back of my shoulder blades and caused very bad muscle spasms in my right shoulder and arm. I purchased an after market seat cover with lumbar support and the problem went away.

 

That is a hell of a great idea there heyns57! I'm gonna do that today.

I'm sure most air seats were designed to hold up a "Truck Driver"... lol... ya know, the stereotypical truck driver who eats a like a truck driver. Well that certainly isn't me. I'm almost 6 foot and I've weighed between 120 and 135 since high school—hence my CB handle... X-ray.

I run my seat with barely enough air in it to raise the weight of the seat itself, but the shock really restricts the movement. I'm gonna try it and see how it works out.