First, remove the belt.
Then, remove the puller mounting bolt. They pulley will slide off. Note that if you turn the bolt in the wrong direction, you will crack the tensioner and it must be replaced.
If you are using a non-GM replacement part, you may have a 'universal' pulley that doesn't actually fit and now need to add or remove spacers or washers.
Position the new pulley in place of the old one. I recommend applying blue thread locker to the threads of the bolt. Bolt it in. Reinstall the belt.
tension pulley is an automatic tensioner that keeps the serpentine belt at the proper tension it is a single pulley that is smooth (no grooves) usually turning clockwise with constant pressure loosens pulley for belt removal use caution pulley is spring loaded
It is located behind the crankshaft pulley and requires the pulley to be removed to change it out.
I believe it to be on the fan belt mechanisim..the pulley that allows you to adjust the tension.
put your pp in the pistons
15 mm wrench Put it on the tension pulley and pull to take tension off belt
Take a prybar and slide it between the idler pulley and the closest bolt or extrusion that will act as a fulcrum. Push the bar against the tensioner to gain slack. Install in the same manner....MT
I used a breaker bar for the tension pulley to relieve the tension to remove the belt, I think there are three bolts that hold the tension pulley on, just remove them and reverse the procedure to install. Follow the diagram that is either on the inside of the hood or on the radiator cover on how to thread the belt back on the pulleys.
What did unhook or break while you were under the hood ?
Release the tension on the belt using the tension pulley. Install new belt. I have a diagram for a 2002 will sent it and more detailed info if you email me at msgt4sped@aol.com
The 1.6L engine has a single cam pulley, a water pump pulley used to tension the timing belt, and a crankshaft pulley. The pulleys are concealed by a plastic cover with a rubber seal.
The serpentine belt can be removed by using a rachet/socket and turning the spring loaded tension pulley clockwise. Reverse the order to install the new one. (The pulley should be somewhere in the top/middle section of the drive area.
If it is a FWD engine then it is on the front below the water pump on the left behind the pulley