The piston is not hammering, model 125 needle scaller
The piston is not hammering, even with a more pressure than usual. According to the instructions, is part 18 (casing assembly) threaded to part 1? (backhead) I would like to clean piece by piece, I think humidity in the air caused oxidation.
Air Tools & Compressors - Ingersoll Rand - 125 Standard Duty Needle Scaler