compressor oil change - AC

Discussion in '60-Series Wagons' started by euclid, Jun 29, 2005.

  1. euclid

    euclid

    Messages:
    5,986
    Media:
    14
    Albums:
    1
    Likes Received:
    359
    Joined:
    May 15, 2002
    Location:
    Jackson, MS
    Can someone describe to me where the compressor oil hole is on an FJ62 compressor? I hope I can change the compressor oil without removing the compressor.
     
  2. swank60

    swank60

    Messages:
    1,484
    Likes Received:
    244
    Joined:
    Aug 26, 2002
    Location:
    One of Four Presidential Flying Saucers
    From what I have been told, you have to pull it to drain it - drain plugs are either on the back or bottom of the unit - if they are on the bottom, there's junk in the way.

    Why do you need to change the oil?
     
  3. euclid

    euclid

    Messages:
    5,986
    Media:
    14
    Albums:
    1
    Likes Received:
    359
    Joined:
    May 15, 2002
    Location:
    Jackson, MS
  4. swank60

    swank60

    Messages:
    1,484
    Likes Received:
    244
    Joined:
    Aug 26, 2002
    Location:
    One of Four Presidential Flying Saucers
    From what I've read and done, you can buy oil that doesn't react badly with the R12 oil - a 'conversion' oil that will help the R134 bond to the R12 oil. When I did my system, I had it totally evacuated, along with some manual draining that I did - which still leaves something in the system.

    At any rate, if you're going to drain the compressor, you'll need to pull the condensor out of the truck and drain it as well.

    Thing is, the conversion kits come with a set amount of oil to freon mix, and the oil works with the R12 oil. I'd suggest doing something along those lines first, before doing a total system flush/drain etc.
     
  5. euclid

    euclid

    Messages:
    5,986
    Media:
    14
    Albums:
    1
    Likes Received:
    359
    Joined:
    May 15, 2002
    Location:
    Jackson, MS
    Compressor is out. Came out easy with the air cleaner out of the way. I am going to flush the whole system on the truck using a shop air based system I got at the parts store.
     
  6. swank60

    swank60

    Messages:
    1,484
    Likes Received:
    244
    Joined:
    Aug 26, 2002
    Location:
    One of Four Presidential Flying Saucers
    One consideration to be concerned about on the flush - if you're using compressed air, there could be a problem in pushing air and oil through your expansion valve. I'm not sure how it works, but when I thought I'd over-oiled my system, my AC guy warned be about using the compressed air to flush the condensor, and suggested that I pull the condensor and let it drain on a bench.

    I'm just parroting what I was told, actually. I'm not exactly sure how an expansion valve works, or how sensitive it actually is.

    I do think it's a goo dmove to drain out all of the oil and start from fresh though.
     
  7. hightide

    hightide

    Messages:
    386
    Likes Received:
    0
    Joined:
    May 23, 2004
    Location:
    deep south TX
    hijack

    my compresor makes nosie when ac on. could that be that it need oil or something worse?

    thanks
     
  8. euclid

    euclid

    Messages:
    5,986
    Media:
    14
    Albums:
    1
    Likes Received:
    359
    Joined:
    May 15, 2002
    Location:
    Jackson, MS
    Bench drained the compressor. Compressed air to push flushing fluid through the condensor and evaporator. Refill with 134A. Ambiant temp of about 90, cooling to 50 at the vent. Pretty good, IYAM. We are going to run some stop leak in the system for a couple of weeks then drain, replace dryer and refill. This is on Jester's truck. Mine hasn't gotten the full drain procedure yet. On mine I added oil and refilled and have about the same temps, but the site glass is cloudy on mine and clear on Jester's.
     
  9. jesterb

    jesterb

    Messages:
    3,058
    Likes Received:
    2
    Joined:
    Jun 11, 2004
    Location:
    Copperhead Rd.
    39 degrees on the highway = STIFF NIPPLES :D
     
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.