Ford F150 Pickup. Instruction - part 1330

When using a torque wrench adapter, the distance from the torque wrench drive to the adapter drive changes the 
actual torque value. Apply the following formula (A x B / B - C = D) to obtain the correct torque value. Record 
the torque value to be obtained as A. Measure the distance from the center of the torque wrench handgrip to the 
center of the torque wrench drive. See Fig. 17 . Record this measurement as B. Measure the distance from the 
center of the torque wrench adapter opening to the center of the torque wrench adapter drive. See Fig. 18 . 
Record this measurement as C. Example: Multiply the torque value to be obtained A (120) by the length of the 
torque wrench B (12). Subtract the length of the torque wrench adapter C (2) from the length of the torque 
wrench B (12). Divide the product of A x B (1440) by the difference of B - C (10) to obtain the torque 
multiplication conversion D (144). 

Fig. 17: Measuring Torque Wrench Length 
Courtesy of FORD MOTOR CO. 

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Removal & Installation - F150 Pickup - CNG

  

Fig. 18: Measuring Torque Wrench Adapter Length 
Courtesy of FORD MOTOR CO. 

COALESCER/FUEL FILTER 

Removal & Installation 

1. Release fuel system pressure. See FUEL SYSTEM PRESSURE RELEASE . Disconnect negative 

battery cable. Raise and support vehicle. Disconnect the fuel inlet and outlet lines from the fuel 
coalescer/filter. See Fig. 19 . Remove 2 bolts retaining coalescer and remove coalescer. See Fig. 20 . For 
coalescer/fuel filter element replacement, see COALESCER/FUEL FILTER ELEMENT . 

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Removal & Installation - F150 Pickup - CNG

  

2. To install, reverse the removal procedure. After installation is complete, fuel lines and fittings must be 

leak tested. Perform COMPRESSED NATURAL GAS LEAK TEST under FUEL SYSTEMS in 
SYSTEM & COMPONENT TESTING - CNG article.  

Fig. 19: Locating Coalescer/Filter Fuel Lines 
Courtesy of FORD MOTOR CO. 

NOTE:

On installation, use NEW "O" rings. Lubricate NEW "O" rings with 5W-30 
motor oil.

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Removal & Installation - F150 Pickup - CNG

  

Fig. 20: Locating Coalescer/Filter Mounting Bolts 
Courtesy of FORD MOTOR CO. 

COALESCER/FUEL FILTER ELEMENT 

Removal & Installation 

1. Release fuel system pressure. See FUEL SYSTEM PRESSURE RELEASE . Disconnect negative 

battery cable. Raise and support vehicle.  

2. Remove coalescer/fuel filter drain plug, and drain filter. Reinstall drain plug with NEW "O" ring. 

Remove coalescer/fuel filter. See Fig. 21 . Remove cover and discard "O" ring. Remove and discard filter 
element. 

NOTE:

DO NOT reuse "O" rings, always replace with NEW "O" rings. "O" rings 
should be coated lightly with 5W-30 motor oil.

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Removal & Installation - F150 Pickup - CNG