Astro, Safari 1997-2005
Accessory Drive Belts
Belt Tension Inspection
Inspect the drive belt for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will usually start at the inner edge of the belt and run outward. All worn or damaged drive belts should be replaced immediately.
Fig. Accessory serpentine belt routing-4.3L engine
Fig. Accessory serpentine belt routing-4.3L engines
Removal & Installation
Belt replacement is a relatively simple matter rotating the tensioner off the belt (to relieve tension) and holding the tensioner in this position as the belt is slipped from its pulley. The tensioner arm contains a machined receiver for a 3 / 8 in. driver from a ratchet or breaker bar.
Fig. On this 4.3L engine, a large wrench (16mm) was used to pivot the belt tensioner and free the belt
Fig. Accessory serpentine belt routing-4.3L engine
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