RE: [DML] Re: Advice on AC lines

["Kevin Milliken" <kevin.milliken@xxxxxxxxxxxxxx>]

If you are changing from R12 to R134a

Option 1

I have just been through this loop in the UK, after talking to
quite a few A/C guys and manufacturers the correct thing to do is replace
all the flexible
hoses which has now been done on one delorean. THE MOST important item to
change is the drier under
the front wheel arch, If you dont you are asking for problems, it is
"supposed" to be changed
every two years but if it is running o/k on R12 and are notchanging from R12
to R134A.then leave it.

The result of this is R134A  A/C running at 3.8 degrees out of the vents and
the doors now freeze on the outside.

Option 2

If your hoses are o/k then change the drier as above, then have your a/c man
use the new R134a oil
which is used when changing from R12 to R134A (this oil is very, very
expensive about £50.00 per half pint
about $100.00) it is not the normal R134A oil. This is used to lubricate the
pump and coat the inside of the
hoses. DO NOT under any circumstances let your a/c man use a sealer
compound. This will wreck your a/c
if you have a problem later. Sealer compound is designed to be used on old
cars which need a quick fix
and will be sent to the breakers yard after a year or so, even the
manufacturers of the sealers say dont use
it.

I have gone through Option 1 and about to go though Option 2 on another
Delorean

If you need any other info let me know.

Kevin

#5959
#10163





  -----Original Message-----
  From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx]On Behalf Of
David Teitelbaum
  Sent: 28 August 2007 03:41
  To: dmcnews@xxxxxxxxxxxxxxx
  Subject: [DML] Re: Advice on AC lines


  It's not that they lines get messed up but die from age. Especially
  the discharge line going from the compressor to the condensor coil. It
  sees the highest pressures and temperatures. I would at least replace
  that one. There is no way to inspect for impending failure, at least
  not visually. I also suggest draining as much of the old oil as
  possible and filling with fresh. And new service valve cores.
  David Teitelbaum
  vin 10757

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