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Replacing A/C compressor

Tiny
NIKI D
  • MEMBER
  • 2000 CHEVROLET BLAZER
  • 4.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 260,000 MILES
The new compressor has the cut off connector I need, but it also has something that looks like a nut or bolt recessed in a hole (to the right on the compressor, on top in the picture), and has a very thin white covering on it, almost like plastic or paper film. What is this and should I peel the film off or leave it?
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Sunday, June 5th, 2022 AT 9:45 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,057 POSTS
You can leave it, that is a high-pressure pop off valve which is designed as a safety device. After you get done replacing the compressor. here is a video to help you vacuum down and recharge the system:

https://youtu.be/4EqdrBVb0sY

Here are instructions on how to replace the compressor in the diagrams below. I also included this generic guide which will help you as well.

https://www.2carpros.com/articles/replace-air-conditioner-compressor

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
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Monday, June 6th, 2022 AT 8:32 AM

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