AC ?

[Luckymc420]

I had an AC comp go out on me so I am in the process of replacing that and the accum. I need to know how much oil to add to the system. I seem to misplace my manuals and I could not find anything online. I was thinking 5 oz for the comp and 1 oz for the accum?

Spec:
1995 3100

[ifixalot]

My book says the whole system takes 9 oz of oil. You are supposed to drain the oil out of the old compressor and measure it. It says if less than 1 oz comes out, add 2 oz. If more than one once comes out, add that same amount back in.
When replacing the following,
You say accumulator, they don't mention that but they say Receiver/dehydrator. For that add 3.5 oz
evaporator 3 oz
condenser 1 oz
If you had an abrupt loss of freon, it says you'd loose 3 oz of oil out of the system.
All in all, I'd say you are in the ballpark adding 6oz for the both, maybe a tad heavy.
When I did my compressor, I measured the oil and added an extra ounce because I figured I'd lost some with the freon that leaked out over time.
I may be totally wrong about this but I've not heard the amount is all that critical unless you are way too full or too low on the oil.
The buttholes at my dealer opened my system and blew the oil out of my system years ago and it ran dry for a few months until the compressor
totally locked up. When I pulled it apart, I could not find a drop of oil anywhere.

[Luckymc420]

Thanks for the infomation. Yeah I don't know why I always say accumulator. I guess that's the major system we use on semis....
Yeah AC comp locked up and seal blew up so no oil to measure.