air conditioner in 740-which type?

Discussion in 'Volvo 740' started by Jim, Jul 7, 2003.

  1. Jim

    Jim Guest

    I brought my '87 740 GLE in to get the a/c recharged. The mechanic
    said the a/c was labeled with one type (there's a plastic tag that
    says: R134a) but the nozzle or connector was a different type, so he
    didn't want to recharge it. I don't know what to do. I would
    appreciate any suggestions.

    Jim, Jul 7, 2003
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  2. Jim

    James Sweet Guest

    It originally had R12, but it sounds as if it's been retrofitted. If in
    doubt it wouldn't hurt to spend the $100 or so to install a new retrofit
    kit, if the charge has leaked out it probably needs new O rings and a new
    reciever/dryer too, that's the bulk of the cost of the kit.
    James Sweet, Jul 8, 2003
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  3. Jim

    volvowrench Guest

    by Jim dropped his wrench, scratched his head and
    If the shop can't test the refrigerant to determine what's in it, then
    find a shop that can. If the shop that did the "conversion" didn't change
    the service port fittings to the proper type, then find a shop that can
    do both these things correctly and have the system repaired to operation
    in a proper manner.

    volvowrench, Jul 8, 2003
  4. Jim

    Mike F Guest

    The only proper way to be sure is to find a shop that has a refrigerant
    tester. They can take a sample out of the system, and their machine
    will test it and tell them what it is. Chances are you have 134a, and
    what should have been a permanent conversion fitting was only
    temporarily attached over the R12 fitting to do the initial fill and
    then removed.
    Mike F, Jul 8, 2003
  5. If you have a full charge its ez to tell if its 134a or 12. 134a will warm
    up when you stop at a redlight, 12 wont.
    Jack in Dallas, Jul 9, 2003
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