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There's an idler wheel in the surpentine belt circuit along with the AC compressor, the main crank pully and the alternator. The purpose is to keep tension on the belt, and this idler is spring-loaded. If no serpentine belt diagram is available create one before beginning the steps below. In the center of the idler is a 15mm bolt head. Place a closed-end wrench on this bolt head with the free end pointed towards the front of the vehicle and pry the idler in an upwards motion. Hold the ider in the "up" position and slip the serpentine belt off of the alternator pully with the other hand. Release tension on the wrench slowly and allow the idler to lower to it's bottom stop.

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โˆ™ 2006-03-06 16:36:56
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Q: How do you loosen the tension belt on a 2001 Oldsmobile Alero to replace the alternator?
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