A/C charge

Tiny
FATALK0
  • MEMBER
  • 2011 CHRYSLER 300
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
Replaced my expansion valve. Will I need to pull vacuum in order to refill my Freon?
Friday, July 26th, 2019 AT 10:08 AM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Hi,

Yes. Anytime you open the system or do any work on it for that matter, you want to pull a vacuum for two reasons. First, it ensures you don't have any leaks if it holds a vacuum for at least 15 minutes. Second, it pulls the moisture out of the system which is damaging to the compressor and other components.

Here is a guide that will help. Let me know if you need more information. Thanks.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system
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Friday, July 26th, 2019 AT 2:54 PM

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