Nossel Damage Analysis on Caterpillar Engine 3304 Wheel Loader 950 Unit

The fuel system is the process of flowing fuel from the tank to the fuel pump before the fuel is sprayed into the combustion chamber. The fuel pump used is a plunger pump type. The components in this fuel system include the fuel tank, water separator, feed pump, fuel filter, fuel injection pump, nozzle, and governor. This analysis aims to analyze the damage that occurs to the fuel system components, the factors that cause it, and how to resolve it as well as the solution and determine the specifications of the fuel pump that will be used for the 950 wheel loader fuel system. The method used in this research uses a results data approach. visual inspection and measurements of fuel system components compared to the SIS manual. From the visualization measurement data, the following data was obtained: Length under test force is 19.6 mm, Free length after test is 45.7 mm, Outside diameter is 17.0 mm, and Diameter of wire is 1.5 mm. Meanwhile, data from spring specifications according to SIS are: Length under test force is 26.4 mm, Free length after test is 47.8 mm, Outside diameter is 17.8 mm, and Diameter of wire is 1.3 mm. From the data obtained, it meets the spring specifications according to SIS.