Ford F150 Pickup. Instruction — part 1156

1. The following procedures are required to be used when venting fuel from the fuel tanks in order to

remove fuel tanks.

Solenoid - Functions Normally

When servicing fuel-related components, do not smoke or carry lighted
tobacco or any open flame of any type. Flammable gases may be present
and ignite, resulting in possible personal injury.

WARNING:

Do not modify the system configuration or components, or install
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 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.

WARNING:

Fuel line venting is required prior to fuel system component service.

WARNING:

Eye and ear protection are required to be worn during venting, or removal
and installation, of fuel system components.

WARNING:

The status (stuck open, stuck closed, does not operate or good) of each
fuel tank solenoid valve must be identified prior to venting the fuel tanks.

NOTE:

It is recommended that venting be performed with a vent stack. A typical vent
stack installation is shown in the Description and Operation portion of this
section. This is a typical installation only. Any vent stack installation must be
approved by local authorities.

NOTE:

Do not vent any fuel tank unless a new fuel tank or a new fuel tank solenoid
valve is installed. Unnecessary venting of good tanks can cause damage to the
fuel tank solenoid valve.

NOTE:

On vehicles equipped with an extended range fuel tank, the jackscrew can
be reached through an access hole in the vapor retaining cover.

2003 Ford Pickup F150

2003 GENERAL INFORMATION Fuel System - General Information - Natural Gas - F150 Pickup

Fig. 18: Identifying Instruction Lockdown Valve Jackscrew
Courtesy of FORD MOTOR CO.

1. Turn in the instruction lockdown valve jackscrew on the fuel tank solenoid valve(s).

2. Perform the fuel line venting procedure. For additional information, refer to FUEL LINE

EVACUATION .

3. Disconnect the fuel fill line from the fuel fill valve.

2003 Ford Pickup F150

2003 GENERAL INFORMATION Fuel System - General Information - Natural Gas - F150 Pickup

Fig. 19: Disconnecting Fuel Fill Line
Courtesy of FORD MOTOR CO.

4. Connect the Fuel Venting Kit and Adapter to the fuel fill line.

2003 Ford Pickup F150

2003 GENERAL INFORMATION Fuel System - General Information - Natural Gas - F150 Pickup

Fig. 20: Connecting Fuel Venting Kit & Adapter To Fuel Fill Line
Courtesy of FORD MOTOR CO.

NOTE:

Solenoid diagnostics must be completed on all tank solenoid valves prior
to venting.

NOTE:

All fuel tank solenoid valves must be in the locked down position.

2003 Ford Pickup F150

2003 GENERAL INFORMATION Fuel System - General Information - Natural Gas - F150 Pickup