Belts for my 86 6.9

[steelheadguy]

What are the correct belts for my 86 6.9? It has A/C. Four belts.... I went to the store today but the belts they gave me 2 out of 4 were too big and I had some of the belt tensioners maxed out. How tight should each belt be?

I searched for this but found conflicting answers.

 

[laserjock]

Here's what was on mine.

Alternator belt.

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Vacuum pump

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Power steering

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AC

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Hope that helps.