Ford F150 Pickup. Manual — part 1154

Fig. 11: Separating Fitting
Courtesy of FORD MOTOR CO.

6. Remove the Spring Lock Coupling Disconnect Tool.

2003 Ford Pickup F150

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

Fig. 12: Removing Spring Lock Coupling Disconnect Tool
Courtesy of FORD MOTOR CO.

Connect

NOTE:

Inspect and clean both coupling ends.

NOTE:

Replace the o-ring seals.

NOTE:

Lubricate the o-ring seals with 5W30 engine oil meeting Ford specification
WSS-M2C153-F or equivalent prior to installation to help seal and ease the
installation.

2003 Ford Pickup F150

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

Push together the spring lock coupling fittings until the spring engages.

Fig. 13: Identifying Spring Lock Coupling Fitting Components
Courtesy of FORD MOTOR CO.

FUEL LINE EVACUATION

Special Tool(s)

Fig. 14: Identifying Special Tool(s)

2003 Ford Pickup F150

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

Courtesy of FORD MOTOR CO.

All Vehicles

1. Close each manual lock-down valve jackscrew on the fuel tank solenoid valves.

WARNING:

Do not smoke or carry lighted tobacco or open flame of any type when
working on or near any fuel-related components. Highly flammable
mixtures are always present and may be ignited. Failure to follow these
manuals may result in personal injury.

WARNING:

The fuel supply lines will remain pressurized after engine shutdown.
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 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 F-250 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:

The following procedures are required to be used when venting fuel from the
fuel lines to remove the fuel tanks, the fuel lines, the coalescer/filter assembly,
the fuel pressure regulator, the fuel injection supply manifold, the fuel injectors,
the fuel pressure relief valve, the fuel shutoff valve solenoid, the injection
pressure sensor or the engine fuel temperature sensor.

2003 Ford Pickup F150

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