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Oil Capacity--v5 Compressor

JLHAWKINS on Thu April 01, 2010 12:25 PM User is offline

Year: 1997
Make: Olds
Model: Cutlass Supreme
Engine Size: 3.1
Refrigerant Type: 134A
Ambient Temp: 89
Pressure Low: 28
Pressure High: 210
Country of Origin: United States

What is the recommeded amount of oil for the crankcase of a V5 compressor as found on the above vehicle? It seems to me that on a old post a year or so ago that Tim stated it was 3.5 ounces. (PAG 150 of course) Also I once measured the amount in one of the V5's crankcase and I seem to remember it being a little under 4 ounces.

Another unrelated question: On systems converted from R12 to 134A, it is recommeded that one charge system until inlet and outlet temperature of the evaporator are approximately the same. My question is will this also work as a charging technique on a factory 134A system? I have a refrigerant scale but was just curious.

Thanks in advance for you responses.

Chick on Thu April 01, 2010 4:45 PM User is offlineView users profile

If you're changing the compressor, add back the amount that came out, of course a system flush and the proper amount of PAG 150 is recommended, most of those are about 8 to 9 ounces, but each car is different.. On factory R134a systems, always charge the amount on the sticker, the manufacturer figured it all out for you, no need to second guess them..

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HVargas on Thu April 01, 2010 7:35 PM User is offlineView users profile

System capacity is 8 oz. R134a capacity is 30 ounces.


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iceman2555 on Thu April 01, 2010 9:19 PM User is offlineView users profile

The compressor should have app 2-3 oz added to the case. Add the lubricant thru the 16mm bolt on the side of the case. Failure to add at this location may result in severe compressor damage.
The remainder can be added to the new accumulator thru the suction side (accumulator inlet).
Yes, the inlet and outlet temp can be used with 134a. Suggest to change the control valve in the compressor body to a 134a spec'd unit and also insure that the doors are open when charging the system utilizing evap temps.

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JLHAWKINS on Fri April 02, 2010 11:17 PM User is offline

Thanks for your responses. As always, you answered my questions.

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