I've had to replace the York A-209 compressor on my 1966 Mark X with a rebuilt unit. At the same time I'm replacing the hoses and drier. Does anyone know how much oil and R12 Freon is required? There are no references to quantities in the owners manual, my shop manual (which was published two years before the factory began installing the Delaney Galley unit) or the materials published by JCNA.
Phil E.

 

We will check our archives. The compressor should be filled and checked with a proper dipstick before charging. Do you still have the primary and secondary condensers?

 

Yes, I have both of the original condensers and the evaporator unit.

 

Checked all manuals and data. As it is R 12 you fill to the sight glass. Sorry no data on oil or R12 other than if the compressor is filled that will be sufficient!

 

Is your compressor a new part or a re-built unit? Typically there should be an insert or sticker indicating the the compressor crankcase has been properly filled with mineral oil prior to packaging. R-12 has not been sold to non-licensed/certified parties in California in decades,,, Do you have access to the refrigerant? The Coventry Foundation is correct, the proper charge of refrigerant is determined by the use of manifold gauges coupled with viewing the sight-glass in the receiver-drier for the eventual absence of bubbles.

 

Thanks for checking. Oil has been added. R12 will be next.

 

Compressor is rebuilt and the packing oil has been removed and replaced with the proper oil in hopefully the proper amount. Using a licensed A/C facility to add the Freon. Old sight glass is corroded, not sure if I can get a new one.

 

If you replaced the filter dryer it should have a new sight glass--it is perhaps painted over which is usual these days.

 

Hi Pendlis,
I would guess that the system would hold between 3.5 and 5.0 lbs of R12, probably closer to 5 lbs. The internal volume of the old evaporators and condensers are quite large. Just an FYI, you cannot use a sight glass to fill a system with R134a, the sight glass will still have some bubbles when the system is fully charged.

P.S. Great looking car!

 

The way I do it when using a non native refigerant is have the fans on high and a thermometer in the vents. Start adding refrigerant and the vent temperatures will start to drop. The rate of decrease will slow, and when it stops, or reaches a minimum point and doesn't decrease any more with the addition of more refrigerant and the pressure just starts going up, then you are full.