东风_4型机车的机油粗滤器分内外两层对机油进行滤清,外层是用直径为0.45毫米钢丝以0.05毫米间隙绕制在滤芯筒上组成的滤芯筒装配,内层是形如铁饼的滤芯片装配组成。按有关规定,该粗滤器前后的压力差不应超过1.5公斤力/厘米~2,超过此值,则应对粗滤器进行解体清洗。但是,有的机车机油粗滤器虽经解体清洗,其压力差却降不下来,或者降下来后又很快长上去。 Dongfeng _4 locomotive oil strainer points inside and outside the two layers of the engine oil filter, the outer layer is 0.45 mm diameter steel wire wound with 0.05 mm gap on the filter cartridge cartridge assembly, the inner layer is shaped like discus The filter chip assembly. According to the relevant regulations, the pressure difference before and after the strainer should not exceed 1.5 kgf / cm ~ 2. If it exceeds this value, the strainer should be disassembled and cleaned. However, some locomotive oil strainer, although disintegrated cleaning, the pressure difference does not drop down, or down and then quickly grow up.