Diesel Engines

The fuel system consists of:

• the fuel tank.
  • The midship fuel tank is mounted to the LH frame side rail.
  • The aft-of-axle fuel tank is mounted between the side rails.
  • a fuel tank filler pipe without a restrictor plate.
  • a threaded fuel tank filler cap.
  • a fuel filter and water separator to protect the fuel injectors.
  • fuel lines.
  • frame-mounted in-line fuel pump which provides pressurized fuel to the engine and contains a pressure relief valve for overpressure protection in the event of restricted flow.

The fuel pump is controlled by the fuel pump powertrain control module relay. Electrical power to the fuel pump is provided through the inertia fuel shutoff switch (IFS switch).

The fuel recirculation/filter unit assists in preventing the fuel from getting in the fuel lines during cold weather operations.