According to the use of gas generating units and work environment to determine the time.
         According to the gas genset failure phenomenon analysis （such as power and pressure reduction， etc.)， that is， to take fault analysis.
         Remove the cylinder head after observation， that is， by observation.
        Diesel engine internal diameter dial indicator to measure the diameter of cylinder liner， the method is to take four different positions， and then the four positions of the inner diameter of the measurement. The measured value is compared with the technical parameters of the diesel engine to determine whether there is serious wear and tear.
         Check method of cracks and cavitation of gas turbine cylinder liner
         Using fault analysis
         Diesel engine parts using observation. After the cylinder head is disassembled， use the flashlight to irradiate the inner wall of the cylinder liner or touch the inner wall by hand. Remove the cylinder liner with the cylinder liner and then clean the scale attached to the outer wall of the cylinder liner. Check the outer wall of the liner by observation.