Ford F150 Pickup. Manual — part 1183

inhaling propane gas, move the victim immediately to fresh air and
contact a physician or medical emergency personnel for artificial
respiration or other required treatment.

WARNING:

Do not needlessly vent propane fuel during service, and do not open the
80% stop-fill valve while a vehicle is inside a building. When servicing the
fuel system, follow the recommended procedures to shut off the fuel
tanks and run the engine out of fuel before disconnecting the fuel system
components. If the fuel tank(s) are being serviced, have the fuel
evacuated by trained personnel at a local propane fuel station. Liquid
propane fuel vaporizes at normal barometric pressure at temperatures
above -42°C (-44°F), and expands to 270 times its volume as a liquid.
Unnecessary venting of propane fuel can create fire and health hazards
which could cause personal injury or death.

WARNING:

Be alert for situations that may cause the propane fuel system to vent
fuel. These include extremely hot days, parking near a space heater, or
hoisting a vehicle up near a ceiling heater. Release of propane fuel in a
confined area through the pressure relief valve could occur. The release
of propane fuel in a confined area could result in an accumulation of
flammable vapors. If fuel is vented near a heat source, a fire or explosion
could occur.

WARNING:

Do not use paint drying ovens for propane fueled vehicles. The heat of
paint drying ovens will increase the pressure in the fuel tanks. This could
cause venting of propane fuel vapor into the oven and result in a fire from
the heat or sparks in the electrical equipment. If the fuel is confined inside
an oven an explosion may occur. When refinishing the body panels of a
propane fueled vehicle use spot painting and drying methods.

WARNING:

If a confined area, such as a lubrication pit, has been subjected to
propane gas the area should be inspected for adequate oxygen levels by
a local health department before being entered or personal injury or death
may occur.

WARNING:

The fuel system pressure must be relieved before any component can be
removed. The fuel tanks must be evacuated prior to tank removal.
Removal of components without pressure relief or tank evacuation can
cause propane fuel to escape into the air and cause injury or death.

NOTE:

In high ambient temperatures, such as those experienced in desert locations,
the fuel system is designed to vent excess fuel vapor pressure. The pressure
relief valve will vent fuel and automatically reset itself.

2003 Ford Pickup F150

2003 ENGINE Fuel Tank And Lines-Bi-Fuel - F150 Pickup

1. Relieve the bi-fuel system pressure. Refer to PRESSURE RELIEF -- NATURAL GAS BI-FUEL

SYSTEM .

Fig. 14: Disconnecting Fuel Line
Courtesy of FORD MOTOR CO.

2. Disconnect the fuel line.

3. Remove the nut, the washer and the fill valve.

NOTE:

Use only new approved O-rings upon installation.

NOTE:

Lubricate the O-ring seals with Super Premium SAE 5W30 Motor Oil or
equivalent meeting Ford specification WSS-M2C153-G.

2003 Ford Pickup F150

2003 ENGINE Fuel Tank And Lines-Bi-Fuel - F150 Pickup

Fig. 15: Removing Nut, Washer And Fill Valve
Courtesy of FORD MOTOR CO.

4. To install, reverse the removal procedure.

FILLER VALVE - COMPRESSED NATURAL GAS (CNG)

Removal and Installation

NOTE:

All fuel lines must be leak tested. Refer to LEAK TEST -- BI-FUEL
SYSTEM .

WARNING:

Do not modify the system configuration or components or replace
components with components no specifically designed for use with
natural gas. Ford Motor Company has specifically designed the materials,
components and system configuration for the 5.4L F-Series Bi-Fuel
vehicle, 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.

2003 Ford Pickup F150

2003 ENGINE Fuel Tank And Lines-Bi-Fuel - F150 Pickup

1. Relieve the natural gas fuel system pressure. Refer to PRESSURE RELIEF -- NATURAL GAS BI-

FUEL SYSTEM .

WARNING:

It is important that your bi-fuel vehicle be properly maintained by Ford bi-
fuel trained personnel. If a concern occurs, it is important that properly
trained personnel diagnose the cause. If a concern relates to the fuel
system, correct part replacement is imperative to keep your vehicle
operating at normal performance. Bi-fuel components and gasoline
specific components are not interchangeable. If your vehicle is not
serviced in accordance with bi-fuel service procedures, damage can
occur and your warranty may be invalidated.

WARNING:

Fuel supply lines are always pressurized. When servicing fuel related
components, do not smoke or carry lighted tobacco or an open flame of
any type. Flammable mixtures may be present and can ignite, resulting in
personal injury.

WARNING:

The natural gas fuel system is always pressurized to 655 kPa (95 psi)
downstream of the fuel pressure regulator and up to 24821 kPa (3600 psi)
upstream of the fuel pressure regulator. Use care when servicing the fuel
system or personal injury can occur.

WARNING:

The natural gas fuel supply manifold is pressurized to 655 kPa (95 psi).
Fuel pressure must be relieved prior to any fuel system service.

WARNING:

The fuel system pressure must be relieved before any component can be
removed. The fuel tanks must be evacuated prior to tank removal.
Removal of components without pressure relief or tank evacuation can
cause propane fuel to escape into the air and cause injury or death.

NOTE:

Use only new natural gas approved O-ring seals upon installation.

NOTE:

Lubricate the O-ring seals with Super Premium SAE 5W30 Motor Oil or
equivalent meeting Ford specification WSS-M2C153-G.

2003 Ford Pickup F150

2003 ENGINE Fuel Tank And Lines-Bi-Fuel - F150 Pickup