Tanks and Lines

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 COULD 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.

Natural gas labels are affixed to the inside of the fuel filler door.

Fuel Fill Valve
The fuel fill valve is located behind the fuel filler door inside the fuel filler compartment. The fuel fill valve consists of a receptacle for a fueling connection, a check valve, a manual backflow valve and a particulate filter.

Fuel Lines
The fuel filler, fuel tanks and fuel pressure regulator assembly are connected by stainless steel, braided flexible lines with oiled O-ring face seal fittings.

Coalescer/Filter
The coalescer assembly filters, separates and stores contamination or moisture found in the fuel system, preventing moisture from entering the engine.

Fuel Pressure Regulator
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 line pressure from tank pressure, 20,685 kpa (3000 psi), to line pressure, 620 kPa (90 psi).

Fuel Tanks and Solenoid Valves
The fuel tanks are constructed of fiberglass-wrapped steel, mounted to the frame by insulated mounting straps. The standard tank is located inside the LH frame rail just forward of the rear axle. It is 30.5 cm (12 inches) in diameter by 183 cm (72 inches) long. The optional tanks are located between the frame rails behind the rear axle. There are two tanks, each measuring 37 cm (14.56 inches) in diameter by 81.2 cm (32 inches) long. 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.