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