F 550 4WD Super Duty V8-6.4L DSL Turbo (2008)
3. Remove the EGR-oxidation catalytic converter (OC) pipe from the vehicle.
4. Remove the bolt and the retaining nuts for the high-pressure fuel injection pump heat shield. Remove the fuel tube bracket and position the ground
wire.
5. Remove the remaining 2 bolts and the high-pressure fuel injection pump heat shield.
RH side
6. Remove the pushnuts and the glow plug module heat shield.
-
Discard the pushnuts.
All vehicles
7. Remove the fuel rail supply tube bracket bolts.
8. CAUTION: Fuel injection equipment is manufactured to very precise tolerances and fine clearances. To prevent fuel system damage, it is
essential that absolute cleanliness is observed when working with these components. Always install Fuel System Caps to any open orifices
or tubes.
Remove and discard the fuel rail supply tubes.
Installation
All vehicles
1. Install the new fuel rail supply tubes.
1
Remove the Fuel System Caps from the fuel rail supply tube openings.
2
NOTE: Support the tube while hand snugging the fittings to make sure of correct assembly of the joints.
Position the new fuel rail supply tube between the high-pressure fuel injection pump and the high-pressure fuel rail. Fully hand start and seat
the tube fittings onto the high-pressure fuel injection pump and high-pressure fuel rail.
3
Snug the tube fittings.
-
Tighten to 2 Nm (18 lb-in).
4
Pre-tighten the fuel rail supply tube fittings.
-
Tighten to 12 Nm (106 lb-in).
5
NOTE: Place a visible mark with a permanent marker on the fuel rail and the high-pressure fuel injection pump threaded connection. Turning
the tube fittings one flat of the nut is equal to 60 degrees.
Final-tighten the fuel rail supply tube fittings.
-
Tighten the fittings 60 degrees.
2. Install the fuel rail supply tube bracket bolts.
-
Tighten to 13 Nm (115 lb-in).
RH side
3. NOTE: Use a socket to aid in installing the pushnuts.
Install the glow plug module heat shield and new pushnuts.
All vehicles
4. CAUTION: Failure to correctly install the high-pressure fuel injection pump heat shield may result in engine damage.
