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A/C

Tiny
PALAFOX23
  • MEMBER
  • 1991 CHEVROLET TRUCK
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
So I replaced my whole A/C system and converted it to r134 how much pag oil do I add and how many pounds of Freon?
Monday, April 10th, 2017 AT 10:45 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If you replaced the system what parts were replaced? Did the new parts have oil in them a lot of times they do?
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Tuesday, April 11th, 2017 AT 6:12 AM
Tiny
PALAFOX23
  • MEMBER
  • 2 POSTS
I replaced the compressor, accumulator, evaporator, and the condenser and none of the parts had oil.
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Tuesday, April 11th, 2017 AT 7:13 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Put about seven ounces total in system it is best to add through compressor then turn over by hand of course this is assuming you still have the R-4 compressor that comes from the factory otherwise it may be different. If you replaced the lines as well then add another ounce. Then add some Freon and cycle compressor a few times, discharge and then evacuate ofr about fifteen minutes before recharging again.
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Tuesday, April 11th, 2017 AT 3:10 PM

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