F 550 4WD Super Duty V10-6.8L VIN D (2004)
5. Tighten the bolts in two stages, in the sequence shown.
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Stage 1: Tighten to 2 Nm (18 inch lbs.).
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Stage 2: Tighten to 25 Nm (18 ft. lbs.).
6. Remove and discard the fuel line O-ring seals.
7. NOTE: Lubricate the new fuel line O-ring seals with clean engine oil prior to installation.
Install new fuel line O-ring seals.
8. Connect the fuel lines.
