GM Camaro 1967-1981 Repair Guide

Belts

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INSPECTION



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

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.

TENSION CHECKING & ADJUSTMENT



See Figures 6, 7, 8, 9 and 10

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Fig. Fig. 6: The belt tension can be checked with your thumb, as shown



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



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Fig. Fig. 8: ... then push the component toward the engine and slip off the old belt



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Fig. Fig. 9: To install, slip the new belt over the applicable drive pulleys ...



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Fig. Fig. 10: ... then pull outward on the component while tightening the mounting and adjusting bolts 1 / 2 in. at the halfway point or 1 / 4 in. if the distance is 7-10 in. If the deflection is found to be too much or too little, loosen the mounting bolts and make the adjustments.

Determine belt tension at a point halfway between the pulleys by pressing on the belt with moderate thumb pressure. If the distance between the pulleys (measured at the center of the pulley) is 13-16 in., the belt should deflect

Before you attempt to adjust any of your engine's belts, you should take an old rag soaked in solvent and clean the mounting bolts of any road grime which has accumulated there. On some of the harder-to-reach bolts, an application of penetrating oil will make them easier to loosen. When you're adjusting belts, especially on late model V8's with air conditioning and power steering, it would be especially helpful to have a variety of socket extensions and universals to get to those hard-to-reach bolts.

When adjusting the air pump belt, if you are using a prybar, make sure that you pry against the cast iron end cover and not against the aluminum housing. Excessive force on the housing itself will damage it.

 
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