HBXG brand crawler Bulldozer 1.Operating wieght: 23800kg 2.Cummins NT855-C280 engine, 230HP 3.CAT technology 4 ... composed of oil pump, transmission control valve, steering and braking control valve, sequence valve, relief valve at torque converter outlet, filter and ... . It mainly consists of oil pump, cylinder, inlet valve group diverter valve group, oil tank line and controlling parts.Main pump ...