Tightening belt method
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Isn't there two bolts that allow the body to pivot? I thought there may a bolt in the side of the body that adjusts tension but I could be wrong. It has been years since I have done anything with an air pump on an Olds V8.
sigh....
It's been a long time since I've done one, but they're not that tuff. PITA to get to, though.
Apparently you haven't really looked this over real well yet or you'd see it's not that tough. Get a 3/8" breaker bar. This is for the adjuster square hole on the end of the bracket. You'll need this to pull up on the A.I.R. pump bracket to put the tension on the belt.
I don't recall the head sizes, but there's the bottom swivel bolt for the A/C compressor. It's a through-bolt with a nut on the end. This is also the top swivel bolt for the A.I.R. pump. You loosen that a little bit. No need to remove. 15 mm comes to mind, but don't quote me on that.
There's two plates for brackets, a forward and a rear, to this thing. On each, you'll see an arc slot for adjustability. There's bolts on the head (right next to the fuel pump- the REAL PITA bolt) and there's also one right about behind the A/C belt on the bracketry itself. Loosen these and the A.I.R. pump should move easily. These may be 14 or 15 mm bolt head size. But again, don't recall for sure.
Use the breaker bar to put the proper tension on the belt, then tighten down the front bolt behind the A/C belt. Very snug. This should hold everything in place until you can tighten the rest of the bolts. It's better if you have a helper to either mess with the bolts or put tension on the belt.
That taxed my brain without going out and looking at it again (I know it's been years since I've even bothered to look), but I believe that should get you where you want to be.
If I remember, I might take pictures when I go out to the shop again.
It's been a long time since I've done one, but they're not that tuff. PITA to get to, though.
Apparently you haven't really looked this over real well yet or you'd see it's not that tough. Get a 3/8" breaker bar. This is for the adjuster square hole on the end of the bracket. You'll need this to pull up on the A.I.R. pump bracket to put the tension on the belt.
I don't recall the head sizes, but there's the bottom swivel bolt for the A/C compressor. It's a through-bolt with a nut on the end. This is also the top swivel bolt for the A.I.R. pump. You loosen that a little bit. No need to remove. 15 mm comes to mind, but don't quote me on that.
There's two plates for brackets, a forward and a rear, to this thing. On each, you'll see an arc slot for adjustability. There's bolts on the head (right next to the fuel pump- the REAL PITA bolt) and there's also one right about behind the A/C belt on the bracketry itself. Loosen these and the A.I.R. pump should move easily. These may be 14 or 15 mm bolt head size. But again, don't recall for sure.
Use the breaker bar to put the proper tension on the belt, then tighten down the front bolt behind the A/C belt. Very snug. This should hold everything in place until you can tighten the rest of the bolts. It's better if you have a helper to either mess with the bolts or put tension on the belt.
That taxed my brain without going out and looking at it again (I know it's been years since I've even bothered to look), but I believe that should get you where you want to be.
If I remember, I might take pictures when I go out to the shop again.
I bet it's the bearings squealing in that useless air pump and not the belt.
I've seen so many of them seize solid, I've stopped counting
I've seen so many of them seize solid, I've stopped counting
And just so you know, there were some 69 Camaros that came with A.I.R. pumps. 
And just so you know, there were some 69 Camaros that came with A.I.R. pumps.
I know and CARB doesn't care. They are not required to work.
But if you have one, you can sell it to the 69 Camaro crowd for big $$. Even if it doesn't work.
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