AIR COMPRESSOR ISX 871

[Steen]

I checked today for air leak there is non air dryer filter 30k ago, but after the trans on right side on the frame there some box with harness and few air hoses and that this make a clicking noise and at the moment the compressor starts pumping, when the governor cut off at 130psi compressor stops too. After 3mins that box starts clicking and compressor starts pumping air gauge show around 125psi. same rhing every 3mins or so.