Recharging AC after compressor change?

Tiny
ALEXV55
  • MEMBER
  • 2001 DODGE CARAVAN
  • 170,000 MILES
I have installed a new compressor and drier. The system has been evacuated and now its ready to be charged. Factory manual describes using a charging station that heats the freon to 125F, and then opening valves on both high and low side ports. This station is obviously for shops and not available to your home mechanic even as rental.

Can I use the ac recharge kits normally available in auto stores and walmart instead? It comes with one hose and guage to connect to low side, and you can use cans of r134. In the past I have used them to add small amounts of freon lost due to small leaks and stuff, but never used them on completely evacuated system.
Wednesday, April 4th, 2012 AT 8:39 PM

3 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
You can charge it thru the low side your best bet is to vacuum it thru a manifold gauge set for 45 mins then charge it. Check out this video it will show you how.

https://youtu.be/4EqdrBVb0sY

Please run down this guide and report back.
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Wednesday, April 4th, 2012 AT 8:47 PM
Tiny
ALEXV55
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  • 43 POSTS
Thank you.
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Wednesday, April 4th, 2012 AT 8:50 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Your welcome thats what were here for.
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Wednesday, April 4th, 2012 AT 9:56 PM

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