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#1
07-04-2012, 11:51 AM
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AC Oil
I've completely flushed out all the old oil in my AC system, and I'm now ready install a new compressor. FSM section 83-520 says the following oil capacities need to go into the various parts:
Compressor: 170 cc Condenser: 50 cc Evaporator: 70 cc Receiver/Drier: 40 cc =330 cc oil = ~11 fl. oz. I'm not sure how to actually get the oil into the evaporator and condenser, can I just put ~6 oz in the compressor and ~5 oz in the drier? Am I reading the FSM correctly? It's not exactly the most well-written and clear document... Thanks, and happy 4th!
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cbjukraine '84 300D 
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#2
07-04-2012, 12:27 PM
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the FSM is written that way as an estimate for oil loss with parts replacement in my opinion.
I'd just put 3/4 of the oil in the receiver, and the rest in the suction line, then the system can circulate the oil as it feels like it.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#3
07-04-2012, 02:07 PM
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thanks vstech,
With a new compressor I need to put a few oz in the compressor and turn it mannually, before starting the system up for the first time, right? So 11 oz is the correct amount of oil?
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cbjukraine '84 300D
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#4
07-04-2012, 02:49 PM
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I don't think so.
I seem to remember 8 oz... on a new compresor, I drip in small amounts of oil, and rotate the compressor 3-5 times, then drip some more in, and rotate another few.
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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