Having problems with your 2005 Mercedes-Benz Mercedes Benz E320 Cdi ?

Recharging AC unit on 2000 E320

\015 I had a leaky valve and all the refrigerant has leaked out. \302\240I've replaced the valve, but not sure how to proceed to fill it back up. \302\240Also, how much refrigerant does the system hold?\015 Posted / edited by AnonymousUser on : 20-11-2017

Answers :

The first thing that needs to be done is to have a vacuum pulled on the system,(It needs to be pulled down to at least 0 mmhg's) Then depending on whether it's R12 or 134A,The system can be recharged.The only way to know that you have the correct charge is to evacuate, vacuum, and recharge by weight.The total amount of refrigerant required is 1.7lb. However you have problem, Since the system was empty there is air in it and until this air is removed,the system will not function correctly.
\015\012So
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  1. Vacuum (the vacuum should be left on the system for at least an hour to check for leaks) If no leaks are found.Go to step 2
  2. \015\012
  3. Recharge system by weight (1.7lbs for empty system with vacuum pulled)
  4. \015\012
  5. Run system for 30 minutes,Retest pressure.
OK You need to purge the system with vacuum. Autozone and Murrays(Oriellys) lend these pumps out with a substantial deposit. Otherwise it is free. You connect the pump up to the fill valve on your system and let the pump run. Store employees can tell you how long. You should see a label under the hood or info in the ownwers manual about the amount. Most cans are not 16OZS> Put in some sealer/ conditioner in leiu of Freon (4-6ozs.). You may have to jump the switch to get the compressor to start, then fill to limits.
Repair Help & Product Troubleshooting for 2005 Mercedes-Benz Mercedes Benz E320 Cdi

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