Pre 84 Trucks 1st gen pickups

80 20r ac belt adjustment

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Old Apr 25, 2017 | 07:47 AM
  #1  
oilspot's Avatar
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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?
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Old Apr 25, 2017 | 07:10 PM
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farrier's Avatar
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From: East Central Missouri
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.
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Old Apr 25, 2017 | 08:33 PM
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From: Sweet Home, OR
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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