See Figures 1 through 5
Inspect the belts 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. It is best to replace all drive belts at one time, as a preventive maintenance measure, during this service operation.
Fig. Fig. 1: There are typically 3 types of accessory drive belts found on vehicles today
Fig. Fig. 2: An example of a healthy drive belt
Fig. Fig. 3: Deep cracks in this belt will cause flex, building up heat that will eventually lead to belt failure
Fig. Fig. 4: The cover of this belt is worn, exposing the critical reinforcing cords to excessive wear
Fig. Fig. 5: Installing too wide a belt can result in serious belt wear and/or breakage
See Figure 6
Fig. Fig. 6: Check the belt tension by simply observing the range indicator located on the tensioner spindle
Serpentine belts are automatically tensioned by a system of idler and tensioner pulleys, thus require no adjustment. The serpentine belt tension can be checked by simply observing the belt acceptable belt wear range indicator located on the tensioner spindle. If the belt does not meet the specified range, it must be replaced.
A belt is considered "used'' after 15 minutes of operation.
REMOVAL & INSTALLATION
See Figures 7 through 12
Fig. Fig. 7: A decal showing the belt routing may sometimes be found under the hood
Fig. Fig. 8: Relieve the belt tension and remove the belt-1994 4.3L model shown
Fig. Fig. 9: On some 2.2L engines it may be easier to attach the breaker bar to the tensioner arm from under the vehicle to relieve belt tension
Fig. Fig. 10: Relieve the belt tension and remove the belt-1996 4.3L model shown
Fig. Fig. 11: Serpentine belt routing-4.3L e