Re: R-12 to R-134a Retrofit; was Re: IML: Change Over for 1975 AutoTemp

["Steve B." <Imperial59@xxxxxxxxxxxxxxx>]

Hi Peter:
      I don't know what you mean by "get up and kick in".  If you mean 
that the clutch is not engaging then you need to find out if the clutch 
isn't working or if it isn't getting power.  If you mean the the 
compressor is running but not compressing then you have probable 
compressor issues.

   The receiver is the "pop can" in the front.  It contains a desiccant 
bag to absorb any moisture and acts as a reservoir so liquid refrigerant 
doesn't get dumped back to the compressor.  Anytime the system is opened 
the receiver should be replaced and you don't want to hook it up until 
the very last thing right before the vacuum pump is hooked up.  The 
desiccant will suck the moisture out of the air and become saturated in 
short order if it is left open.

   Rebuilt compressors are like rebuilt anything these days...  Pretty 
much Junk.  I would get one from the most reputable place you can find 
and make sure they are local so you can take it back if it fails (they 
weigh a ton so shipping eats you up quickly).  Don't buy a compressor by 
price.  The difference in price is negligible when you consider the cost 
for refrigerant, dryer (receiver) and labor to do all the work over 
again if the compressor does not work.

  One last thought...  if you aren't doing all the work yourself you 
may want to consider having a professional provide the parts and install 
them.  That way if the compressor fails they are on the hook for redoing 
the whole job instead of you.  In any event make sure the system is 
properly flushed before you refill it with your new parts in place.

                             Steve B.



Peter Thielman wrote:
> I tried to get my '71 Imperial "recharged" and the garage put in the 
> expansion valve but the compressor wouldn't get up and kick in.  They 
> made comment to it needs the compressor rebuilt and a receiver.  It 
> now has a tag on it 134A so I appear to be ready for 134A when I get 
> the new/rebuilt compressor.  But what is a receiver.  I think it is 
> the thing that looks like a pop can in the front of the radiator.  Am 
> I correct.  I see from the web sight links to a firm in Texas that has 
> rebuilt compressors for USD $175.00 that I can get shipped to a friend 
> in New York where I can go and install it and then do the Sam's Club 
> thing for the 134A.  Is this process reasonably straight forward as it 
> sounds or am I over simplifying things again??
> Regards Peter Thielman - Napanee, ON Canada.
>
> */Elijah Scott <imperial1971@xxxxxxxxx>/* wrote:
>
>     */Henry Blair <henryblair@xxxxxxxxxxxxxx>/* wrote:
>
>         Check the price of R134a.  Now about $8 for 12 ounces.
>
>     I buy it by the case at Sam's Club -- 12 12 oz. cans for $23 plus tax.
>
>     Elijah
>
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