Atlas XAS90jd 185cfm OIL CHANGE?

by jacob
(halton hills, ontario, canada)

Wondering if anyone can guide me through changing the oil in my old atlas 185 cfm diesel compressor. I am referring to the actual compressor oil. I have changed the engine oil already but have never dealt with a rotary screw comp before. I can drain the reservoir, but how do you empty the whole system? is there a special procedure for bleeding or priming the oil system?

I am an automotive mechanic.
Just don't want to mess anything up my first time.


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Oct 22, 2016
Atlas XAS90jd 185cfm OIL CHANGE
by: Doug in

Try searching for this:

XAVS 900 CD7 T4I APP Inst 2012.pdf

You'll get few hits, this isn't for yours, but should apply. And if you check, you may find one more specific to your unit.

if you get this specific book, look around page 102 on.

Good luck and have fun!

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