[Tim Bishop]

Originally Posted by Ronen Tat

Adjusting the truss rod is for neck relief, not action. Once you have the right amount of relief the action is set at the bridge and nut. My point is, when adjusting the truss rod pay attention only to the neck, not the action. Take care of that later - at the bridge.
Of course, I could be wrong

Who said it was for adjusting "action"? Adjusting the neck is not only for adjusting relief, but an integral part of what contributes to the action when the overall set-up has been completed.