SOURCE: Serpentine belt diagram for 2003 chevy cavalier 2.2l ohc
That pulley is the tensioner pulley. It is either manual or automatic. If it is a manual tensioner, the bracket that it is attached to it should have a square hole located on it bracket somewhere. This whole will look inoculous, but will be offset from the pulley. If you have a 3/4" socket wrench, you'll notice it fits nicely into this hole.
You use this hole (and the wrench) to twist the whole bracket and apply tension while you tighten the bracket itself down.
An automatic tensioner will have a spring inside and would pretty much work by itself when a belt of the proper length is installed. Your Hanynes manual would have already alerted you to how to adjust an automatic tensioner.
I hope that helps.
BTW, the tensioner pully usually rests on the back (flat) side of the belt and has no device attached to it.
SOURCE: i need to replace the serp. belt on a 1998 Chevy
Serpentine drive belt routing-GM 2.4L engine
Where is says to rotate tensioner, you put the socket/wrench on the center of the pulley....rotate counter-clockwise.
SOURCE: tensioner pully came apart and
i think the die grinder is appropriate with a cut off wheel, if that doesnt work get the hot wrench!
The one on the left has two 14mm fasteners 1 nut & 1 bolt. The one on the right has the same 1 14mm nut and 1 14mm bolt. Both are simple to replace. Step 1: Relieve the tension on the pully you wish to replace. Step 2: remove the pully (front) by removing the 14mm nut. To remove the rear tensioner pully, remove both nut & bolt.77 views
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