Fuel injection systems remain under pressure, even after the engine has been turned OFF. The fuel system pressure must be relieved before disconnecting any fuel lines. Failure to do so may result in fire and/or personal injury.
Before servicing the vehicle, refer to the Precautions Section.
Remove or disconnect the following:
Negative battery cable
Fuel tank skid plate bolts and lower the skid plate.
Fuel tank filler pipe hose from the tank
Fuel tank filler pipe vent hose from the tank
Fuel lines from the fuel pump
Front fuel tank connections
Rear Evaporative Emissions (EVAP) hose clamp and the hose
Electrical connector from the fuel pump
Support the fuel tank with a jack.
Fuel tank support strap bolts and the fuel tank straps
Installation is the reverse of removal. Note the following torques:
Tighten the fuel tank strap bolts to:
F-150: 35 ft. lbs. (47 Nm)
F-250 and F-350 mid-ships tank: 30 ft. lbs. (40 Nm)
F-250 and F-350 aft-of-axle tank: 66 ft. lbs. (90 Nm)
Mark LT: 35 ft. lbs. (47 Nm)
Tighten the skid plate bolts to:
F-150: 15 ft. lbs. (20 Nm)
F-250 and F-350 mid-ships tank shield: 15 ft. lbs. (20 Nm)
F-250 and F-350 aft-of-axle tank cover: 66 ft. lbs. (90 Nm)
Mark LT: 15 ft. lbs. (20 Nm)
Connect the negative battery cable.