Question 32General Subjects - Assistant Engineer

The correct answer is B) diesel oil. Diesel oil is the safest and most effective way to remove carbon deposits from air compressor inlet and discharge valves after disassembly. Diesel oil is a mild solvent that can effectively break down and dissolve the carbon buildup without causing damage to the delicate valve components. The other options are incorrect because: A) Gasoline is too harsh and volatile, and can damage or degrade the valve materials. C) Naphtha is also a stronger solvent that may be too aggressive for these components. D) Ammonia is a corrosive chemical that should not be used on metal air compressor parts.