Chevrolet Nova/ChevyII 1962-1979

Belts

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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.

Every 4 months or 6,000 miles inspect the alternator and air conditioning drive belts for wear, fraying, cracking, and tension. Replace any defective belts immediately. Adjust loose belts to the proper deflection. Replace the drive belts every 24 months or 24,000 miles.

TENSION CHECKING & ADJUSTING





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Fig. Fig. 6 You can check belt tension with thumb pressure



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Fig. Fig. 7 To adjust belt tension or to replace belts, first loosen the component's mounting and adjusting bolts slightly



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Fig. Fig. 8 Push the component toward the engine and slip the belt off



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Fig. Fig. 9 Slip the new belt over the pulley



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Fig. Fig. 10 Pull outward on the components and tighten the mounting bolts

Check belt tension by applying moderate thumb pressure to the belt at a point midway between the pulleys. If the center-to-center distance between the pulleys is 13-16 inches, belt deflection should be 1 / 2 in.

Loosen the component's adjusting bolt and move the component until proper belt tension is achieved. Tighten the adjusting bolt.


CAUTION
Do not pry on the alternator housing with a metal object as it is aluminum and can be easily damaged.

 
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