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Old 06-07-2020, 06:42 PM
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Tuske427 Tuske427 is offline
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Default Air conditioning identifying and trouble shooting help

Hey everyone:

I have a buddy with a '73 Pontiac T/A LS1 swapped and with an aftermarket AC system. AC brand unknown as he bought the car this way and no paperwork provided. Unfortunately for him the car keeps spitting belts when he gets on the throttle, despite having the idler and tensioner pulleys replaced. I was wondering the following:

1- has anyone had issues like this? any suggestions on what to look for/ common causes, etc.

2- Does anyone recognize what brand AC unit this might be? He didn't see any identifying logos on the brackets, etc.

3- Any recommendations on how to fix this, or, if another bracket design is a known good one he should look into?

Appreciate the help, thanks!!
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Old 06-07-2020, 07:16 PM
dhutton dhutton is offline
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I would check the pulley alignment.

https://www.youtube.com/watch?v=s9Jd7i_sIwk

Don
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Old 06-07-2020, 07:28 PM
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Pulley next to compressor looks wonky. Doesn’t look lined up


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Old 06-08-2020, 11:05 AM
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Quote:
Originally Posted by dhutton View Post
I would check the pulley alignment.

https://www.youtube.com/watch?v=s9Jd7i_sIwk

Don
Quote:
Originally Posted by hifi875 View Post
Pulley next to compressor looks wonky. Doesn’t look lined up


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Yes, the fixed idler up top looks like the alignment is off, too far forward. Looks like there's a washer behind the outer spacer and the plate that shouldn't be there.
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Old 06-08-2020, 06:57 PM
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Looks just like the Kwik Performance unit I got with my Vintage Air kit.
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Old 06-08-2020, 08:14 PM
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Thank you, everyone! Yeah, the next time he brings his car over we will definitely check these with a fine comb. Need to locate one of those laser alignment tools, too, ha ha
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