look in from the passanger side of the engine compartment there is a spring loaded idler which can be accessed with a 15mm box wrench ( the idler has a little arrow on it) as you move it clockwise/counter clockwise it will increase or decrease the tension on the serpentine belt(observe this with the car not running!!!) you probably should remove the air cleaner black box,and the passanger side under wheel well black splash guard,you'll have more room to work.....the job is realatively easy.......just make note of the way the belt goes around each pulley....that idler can be accessed from under that wheel well also if you should have to get Moore deflection
http://www.freepdfmanual.com/2009/05/12/2004-daewoo-nubira-lacetti-maintenance-repair-and-troubleshooting-manual
Download this free manual for a daewoo nubira-lacetti. Same car, different name. Everything you ever need to know. Illustration for belts are really good, in the engine chapter.
15 mm wrench Put it on the tension pulley and pull to take tension off belt
picturediagram of how to install 89 Cherokee serpentine belt
How do you put on a serpentine belt on a 2002 Isuzu axiom
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Put the serpentine belt on to the pulleys of your 1994 Chevy engine. Tighten a serpentine belt with the tensioner pulley.
Loosen the tensioner pulley. The serpentine belt will become loose and can be removed. Put the new serpentine belt on and tighten the tensioner pulley.
There should be a belt diagram under the hood.
How to put on belt
You can change the serpentine belt by loosening the tensioner pulley. When the tensioner pulley is loose and the serpentine belt will become loose. Put the new serpentine belt on and tighten the tensioner pulley.
Put the new serpentine belt on to your 1992 Chevy Corsica pulleys. Push the tensioner pulley to the left to tighten the serpentine belt.
Put the serpentine belt around the pulleys on your 2001 Chrysler LHS. Tighten the serpentine belt by pushing the tensioner pulley to the left. Tighten down the tensioner pulley and the serpentine belt will be tight.
You have to release your tensioners in order to release your serpentine belt. When you put the belt back on you have to follow the diagram on the hood of your car.