Early Packard A/C?

[jwa 11]

Greetings, So i assume that an early Packard A/C unit would need R-12 Freon? Does anyone have info/ experience on adding a clutch to an original A/C compressor? Who has a working unit? Thanks, Jerry

[bryankazmer 251]

It would help to clarify if you are talking about the fifties version or the 40-42 version.  I believe both used Freon, but the prewar units are much harder to locate

[jwa 11]

My bad,  yes 1940-1942.  

[DLynskey 276]

In the 1950's a gentleman I know had an untouched 1942 limousine with factory A/C. The unit was in the trunk and had a very prominent yellow warning tag. "Caution -- Due to wartime restrictions the only gas available for this unit is poisonous. In case it develops a leak evacuate the car immediately".  I assume from the warning that the war-time units used ammonia as a coolant.

 

Don

Edited November 21, 2019 by DLynskey
spelling (see edit history)

[HH56 9]

 

On 11/20/2019 at 6:16 PM, DLynskey said:

  I assume from the warning that the war-time units used ammonia as a coolant

The war era refrigerant replacement was Methyl Chloride.

[DLynskey 276]

As rare as they are I figured someone on this forum would come with a copy of the warning. It's not exactly the wording I remember seeing 60 years ago, but the tag doesn't identify the refrigerant used. Don't worry about my aging memory. It's actually getting better. In fact it's so good now my wife keeps telling me that I even remember things that never happened.

 

Don

[jwa 11]

Wow, Thanks HH56!   I'd never seen that before.  A great detail item.   I appreciate you sharing !   Jerry

[8E45E 1,115]

On ‎11‎/‎20‎/‎2019 at 7:16 PM, DLynskey said:

In the 1950's a gentleman I know had an untouched 1942 limousine with factory A/C. The unit was in the trunk and had a very prominent yellow warning tag. "Caution -- Due to wartime restrictions the only gas available for this unit is poisonous. In case it develops a leak evacuate the car immediately".  I assume from the warning that the war-time units used ammonia as a coolant.

 

Don

Some speculate the extensive devastation caused by the fire in the Cocoanut Grove/Melody Lounge fire in Boston in 1942 was likely from Methyl Chloride leaking from one of the coolers at the time.   Although the actual fire was started from a staff member relighting a candle, igniting a curtain, it was the sudden acceleration of it that baffled the investigators and the NFPA for several years, at first blaming highly flammable plastics which were new at the time.  In later years, the investigators concluded the possible substitution of standard refrigerant for Methyl Chloride was partially to blame.

 

Craig

[dan1 4]

Craig,

 

It is not a big deal to change the size of the expansion, and fill valves, then upgrade the flex hoses to use R-134.  If you don't want to do your part for the planet you can supposedly buy R-12 in Mexico.

 

Our 41 Coupe with factory air has a FMOCO compressor with a clutch..  The running driving car will be listed on the AACA forum for sale at $23,500 in the next day or so.

 

Daniewl

 

[West Peterson 655]

You don't need to go to Mexico for R-12. It is readily available (relatively readily available). Many people hoarded it many years ago, and now supplies seem to be back down to normal prices since hardly anyone needs it anymore.