Also be sure to snug up the pivot bolt/nut, once the desired tension is reached. I didn't get mine good and snug and eventually the pivot bolt beat out the hole (elongated) in the mounting bracket pretty bad. Of course the belt tension caused the hole to elongate worse in the front end of the bracket than the back end, so then the pump wanted to cock canted and cause the pulley to not align properly. I should have bought a new bracket, but cheapness led me to shim between the bracket and engine block in a tapered way that cocked the bracket outward in the front end, resulting in the belt pulley being back in line.