1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Alternator belt replacement questions

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Old 06-28-2015, 10:06 PM
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Alternator belt replacement questions

Hi everyone, I'm new here.

On my 1982 F-150, I am replacing all the belts as they are glazed and cracking. I have 2/4 of the belts removed easily. However, I hit a snag with the belt that turns the alternator off of the crank.

I need to get tension off of the belt by pivoting the alternator. There is a bolt that is visible from the top of the engine that holds the bracket to the block which holds the alternator.

There is a bolt that is visible only from the bottom that holds the alternator to the bracket by running thru the alternator housing. This bolt (If loosened) can allow the alternator to pivot in the bracket to get tension off of the belt.
I'm not sure if I should loosen the top bolt, and pivot the alternator and bracket as one, or loosen the bottom bolt which runs thru the alternator to pivot it within the bracket.
Both bolts are stuck, and i am afraid of exerting a lot of force on them for fear of breaking them. Are they both standard thread (right tight, left loose?)

Any input is appreciated.

Thank you.
 
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Old 06-28-2015, 10:16 PM
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Here are pictures for a better understanding.



Here's pictures for a better understanding
 
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Old 06-28-2015, 10:18 PM
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Old 06-29-2015, 09:10 AM
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You need to loosen two bolts. The one in the slot as well as the other bolt on the alternator.

Do not loosen any bolts which hold the bracket to the engine block. You do not have to loosen much in order to be able to move the alternator enough to R & R the belt.
 
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Old 06-29-2015, 11:03 AM
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Hi, which other bolt needs removing? I only see the one that Is in the slot. Are they normal right handed threads? (should I be loosening them like a normal bolt to the left?)
 
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Old 06-29-2015, 11:28 AM
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There are two bolts which secure the alternator. The one in the slot holds it in the desired place for proper belt tension... opposite that bolt is another one which is the pivot point. Both need to be loosened just a little [not taken out]. Both loosen by turning CCW [leftie loosie and rightie tightie].
 
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Old 06-29-2015, 11:48 AM
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Thank you! Any tips to get them un stuck? I don't want to snap them.
 
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Old 06-29-2015, 10:50 PM
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Got everything loosened and now I have replaced all the belts and went for a test drive. Everything is good.

Thanks for the help!
 
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Old 06-30-2015, 09:37 AM
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Good deal! Have fun.
 
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