GM Corvette 1963-1982 Repair Guide

Belts

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See Figures 1 through 5

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Fig. Fig. 1: There are typically 3 types of accessory drive belts found on vehicles today



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Fig. Fig. 2: An example of a healthy drive belt



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Fig. Fig. 3: Deep cracks in this belt will cause flex, building up heat that will eventually lead to belt failure



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Fig. Fig. 4: The cover of this belt is worn, exposing the critical reinforcing cords to excessive wear



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Fig. Fig. 5: Installing too wide a belt can result in serious belt wear and/or breakage

INSPECTION



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.

CHECKING & ADJUSTING TENSION



1 / 4 inch at this point.

If the deflection is found to be too much or too little, loosen the mounting bolts and make the adjustments.

See Figures 6, 7 and 8

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Fig. Fig. 6: Pulley location and drive belt routing-1978-79 vehicles



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Fig. Fig. 7: Drive belt routing-1980 vehicles



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Fig. Fig. 8: Drive belt routing-1981-82 vehicles

Check the drive belts every 6,000 miles for evidence of wear such as cracking, fraying, and incorrect tension. Determine the belt tension at a point halfway between the pulleys by pressing on the belt with moderate thumb pressure. The belt should deflect about

 
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