Pre 84 Trucks 1st gen pickups

80 20r ac belt adjustment

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Old 04-25-2017, 07:47 AM
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80 20r ac belt adjustment

My 80 has factory, or maybe dealer option ac??? The belts all of a sudden loose. Call me stupid but I don't see any damn way to adjust this thing. What am i missing?
Old 04-25-2017, 07:10 PM
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If it has a smog pump, that is your tensioner pulley.
If not, it needs a AC bracket with a tensioner pulley.
I need one of these pulley brackets myself.
Old 04-25-2017, 08:33 PM
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Yep, on my the smog pump is the tensioner.

FWIW, it doesn't give much room to tension, so if the belt is at all worn it'll likely need replaced.



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