Question about 1998 Buick LeSabre

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My engine accessory belt came loose on a 98 buick lesabre with a 3800 engine. Can I loosen Alternator so it can slip back on?

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There should be a TENSION PULLEY/ARM that accepts a large (3/4"?) wrench or cresent wrench. You rotate the pulley in the direction to loosen (its' tension) and get the belt back in place.
Sometime if the belt has ridden off the pulleys it will need to be replaced. Turn it so the "teeth" are on the outside and see if there are cracks in the rubber. Also look for wear marks on the pulleys or "rubber" that has come off the belt.

Posted on Oct 24, 2010


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1983 GMC G2500 Alternator Belt Diagram

REMOVAL & INSTALLATION Fig. 1: A gauge is recommended, but you can check belt tension with thumb pressure 89771g18.gif
Fig. 2: Loosen the component's mounting and adjusting bolts slightly to remove or adjust the belt(s) 89771g19.gif
Fig. 3: Push the component toward the engine and slip off the belt 89771g21.gif
Fig. 4: Slip the new belt over the pulley 89771g22.gif
Fig. 5: Pull outward on the component and tighten the mounting bolts 89771g23.gif
Fig. 6: Accessory mountings found on 6.2L diesel engines 89771g24.gif
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