Fuel Tank and Lines

FUEL TANK AND LINES

The fuel system consists of:
- a fuel filler valve.
- an aft-axle fuel tank assembly.
- a midship fuel tank.
- an extended range tank.
- fuel tubes.
- a fuel pressure regulator/coalescer filter assembly.

WARNING:
- Do not modify the system configuration or components or replace components with parts not specially designed for use with natural gas. Ford Motor Company has specially designed the materials, components and system configuration for the 5.4L Econoline natural gas vehicles, and each particular system is precisely calibrated for efficient operation. The use of different parts or materials can produce an untested configuration that can result in fire or personal injury or cause engine damage
- It is important that your natural gas vehicle be properly maintained by Ford natural-gas trained personnel. If a problem occurs, it is important that properly trained personnel diagnose the cause. If the problem relates to the fuel system, proper part replacement is imperative to keep your vehicle operating at normal performance. Natural gas components and gasoline fuel components are not interchangeable. If your vehicle is not serviced in accordance with natural gas-fueled vehicle procedures, damage can occur and your warranty may be invalidated.

NOTE: All standard production components and systems receive routine service under base warranty procedures.

The fuel pressure regulator is located on the inside of the LH frame rail just forward of the transmission support cross-member. It is part of an assembly that includes the coalescer/filter. The fuel pressure regulator reduces the tube pressure from tank pressure, 20,685 kPa (3,000 psi), to tube pressure, 620 kPa (90 psi).

The external fuel tanks are constructed of fiberglass-wrapped steel, mounted to the frame by insulated mounting straps. Each tank has an internal, normally closed solenoid shutoff valve wired to the inertia fuel shutoff circuit to isolate the fuel tanks in the event of a collision.

The fuel pressure regulator coolant bowl is serviced separately.