Serpentine pulley bolts...left or right threaded?
 

Changing both pulleys as part of sepentine belt replacement and having difficulty loosening fixed pulley bolt on 2001 B3000 3.0. Before I try more leverage the mechanic in me said ask somebody first. lol So here I am. Also, am I better off replacing the entire tensioner pulley assy. or just the pulley. Truck has 130k on it. Thanks in advance.