F 550 4WD Super Duty V8-6.4L DSL Turbo (2008)
^
Tighten M8 bolts to 31 Nm (23 lb-ft).
Manual transmission vehicles
3. Install the 3 engine rear cover bolts.
^
Tighten to 62 Nm (46 lb-ft).
All vehicles
4. Install the starter.
5. Clean the cover mounting surface and apply a dime-sized bead of sealant at the seams.
6. CAUTION: Inspect the volume control valve and the pressure control valve electrical connectors for damage or obstructions at the
connector and mating high-pressure fuel injection pump connector. Verify that the connectors are completely latched to the valve
housings or engine damage may occur.
Install a new high-pressure fuel injection pump cover gasket. Connect the pressure control valve and volume control valve electrical connectors.
7. Install a new press-in-place gasket in the high-pressure fuel injection pump cover.
8. NOTE: Do not remove the Fuel System Caps from the high-pressure fuel injection pump until the fuel tubes are being installed.
Install the high-pressure fuel injection pump cover and the bolts.
^
Tighten to 13 Nm (115 lb-inch).
9. NOTE: Use a back-up wrench on the high-pressure fuel injection pump fittings.
Install new copper sealing washers, the high-pressure fuel injection pump supply tube, return tube and nuts at the high pressure fuel injection
pump.
^
Tighten to 38 Nm (28 lb-ft).
10. Tighten the high-pressure fuel injection pump supply tube bracket nuts.
^
Tighten to 13 Nm (115 lb-inch).
11. Connect the fuel injector return tube fitting to the check valve.
^
Tighten to 28 Nm (21 lb-ft).
12. Connect the high-pressure fuel injection pump electrical connector.
13. Install the fuel rail supply tubes in the following sequence.
1
Remove the Fuel System Caps from the fuel rail supply tube openings.
2
NOTE: Support the tubes while hand snugging the nut to make sure of correct assembly of the joints.
Position the fuel rail supply tubes between the high-pressure fuel injection pump and high-pressure fuel rail. Fully hand start and seat the 4 fuel
rail supply tube fittings onto the high-pressure fuel injection pump and high-pressure fuel rails.
3
Snug the 4 fuel rail supply tube fittings.
^
Tighten to 2 Nm (18 lb-inch).
4
Pre-tighten the 4 fuel rail supply tube fittings.
^
Tighten to 12 Nm (106 lb-inch).
5
NOTE: Place a visible mark with a permanent marker on the 4 fuel rail supply tube threaded connections. Turning the fuel injector supply
tube nuts one flat of the fitting is equal to 60 degrees.
Final-tighten the 4 fuel rail supply tube fittings.
^
Tighten the 4 fuel rail supply tube fittings 60 degrees.
14. Install the fuel rail supply tube bracket bolts.
^
Tighten to 13 Nm (115 lb-inch).
