(1) Check the supply of cooling water.
(2) Check whether the oil pressure of the oil pump is normal, whether the oil circuit is blocked, whether the filter is blocked, and clean smoothly.
(3) the following methods are used to solve the heat problem of the air valve: the air valve has been changed several times, and the leakage experiment has been carried out before the installation of the air valve, which fully meets the installation technical requirements. When it is installed on the piston compressor, the heat problem still exists, thinking that the spring force is too large, the stroke volume of the cylinder is adjusted. The application of light transmission method to check the piston ring and cylinder with the application of the inner diameter micrometer cylinder roundness and cylindricity; The center line of crankshaft and the center line of piston rod and slideway were measured by drawing method, and the results all met the technical requirements. But the temperature of the cylinder is still high, and the cylinder rod has been calibrated for cylindricity and bending, and finally meets the technical requirements of installation.
