XAS 85 Compressor help
I have an Atlas Copco XAS 85 175 cf. portable air compressor that runs ok . The issue I'm having is it will not build air pressure above 50psi .
I have adjusted the triangle knob to attempt to increase the air pressure , but with no luck .
The compressor was recently overhauled and were using the atlas copco oil designed for the compressor . the 300.00 oil .
Am I missing an adjustment somewhere that will allow the pressure to be increased to at least 85-90 psi
Any help would be appreciated