tightening the serpentine belt
the fan belt busted on my secondhand 95 grand cherokee ( straight 6, 4.0 liter & a/c) i have replaced it, but don’t know how to tighten it
Looking at the routing diagram for the belt, I would say the one of (a) the power steering pump, (b) the alternator, or (c) the idler pulley is mounted on an adjustable bracket. Look for the mounting bolts that are going through a slotted bracket. There also might be a 1/2" square drive hole in whichever bracket swings, if so use use that (and a breaker bar) to tension the belt.