YES I believe you will need a long handled breaker-bar (or equal) to press against the tension to remove the belt
Loosen the tensioner pulley. Put the belt around the alternator pulley and the tensioner pulley. Move the tensioner pulley to the right until the belt is tight. Tighten the tensioner pulley.
Pry bar.
Look on the passenger front side of the engine, you will see pulley attached to a short arm with a square hole. That is the tensioner and tensioner pulley
Belt tensioner? Idler pulley?
well i know on my 94 blazer it turns in the opposite direction.
Put your new fan belt around the pulleys of your 1992 Chevy Blazer. Tighten the fan belt with the tensioner pulley.
Find the idler tensioner pulley and retract it. You then will be able to easily remove and replace the belt.
The 1998 Dodge Dakota tensioner pulley will be the top pulley on the left-hand side of the engine. The tensioner pulley will be able to slide back and forth.
Loosen the tensioner pulley. When the tensioner pulley is loose the belt will come off. Put the new belt on and tighten the tensioner pulley.
One bolt holds the tensioner to the engine, take it off to get the tensioner off and then you can get to the bolt that holds the pulley to the tensioner.
HOW TO GET A PULLEY OFF A 1998 CHEVY BLAZER
Facing the engine the tensioner will be on left side of engine. There is an idler pulley that looks like the tensioner. The idler will have a smooth surface but the tensioner will have grooves on the pulley & should below the idler. If the tensioner is making noise etc it is prob just the tensioner pulley (grooved one) & you can get just the pulley. Big savings.