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Old 10-27-2015, 06:19 PM   #1
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1987 P30 serpentine belt tensioning point

So I just put in a new alternator, got the new belt on just right, got ready to tension the belt and couldn't find where to apply force! I've changed many belts in my day and generally the bracket has a square hole where we can put a ratchet. I've added some pictures:
It only attaches to the bracket in two places-
the bottom right is the main pivot point
the bottom left is just for stability
in between is a ROUND hole on the bracket(makes no sense)
the top bolt is only where i would tighten after i got proper tension
Any ideas??? I'm trying to get ready for a big Thanksgiving trip!!
I'm desperate-I can't move the crankshaft or water pump pulleys! The air pump pulley is bolted in 3 places to the main bracket so it's immobile.
Use the actual nut holding the pulley on the alternator?? surely not................
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Old 10-27-2015, 07:21 PM   #2
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In the old days I use to use a pry bar by placing it between the alternator and whatever is solid on the other side. In your 2nd photo the alternator bracket shows where you can adjust the alternator up/down.
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Old 10-29-2015, 08:56 AM   #3
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Try putting a socket with a long pull bar on the nut of the tensioner. It will roll enough to slip the belt on. If memory serves me the tension is to the right, tightening the belt. The nut has an plastic insert to lock it down. Check to make sure the nut is tight when you finish.
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Old 10-29-2015, 09:38 AM   #4
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Quote:
Originally Posted by coachmendave View Post
Try putting a socket with a long pull bar on the nut of the tensioner. It will roll enough to slip the belt on. If memory serves me the tension is to the right, tightening the belt. The nut has an plastic insert to lock it down. Check to make sure the nut is tight when you finish.
The belt is already on and there is no "tensioner".
Tension is definitely to the right though!
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Old 10-29-2015, 09:55 AM   #5
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If the new belt is on -loosen the rear bracket bolt a little- loosen the pivot bolt and pry the Alternator down from the top to apply tension to the belt.
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Old 10-29-2015, 08:00 PM   #6
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Quote:
Originally Posted by NHRA225 View Post
If the new belt is on -loosen the rear bracket bolt a little- loosen the pivot bolt and pry the Alternator down from the top to apply tension to the belt.
What Chuck said, this is how I do it
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Old 10-31-2015, 08:37 PM   #7
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So I dug out the old pry bar! I used the air pump bracket as a leverage point and it worked like a charm. case closed
thanks everyone!
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