Aft-Axle Assembly Tank

FUEL TANK - AFT-AXLE ASSEMBLY

Powertrain Lift With Tilting Plate:

SPECIAL TOOL(S)

REMOVAL

All vehicles
1. With the vehicle in NEUTRAL, position it on a hoist.
2. If removing the fuel tank assembly for replacement of the fuel tank(s) or the fuel tank solenoid valve(s), perform the Pressure Relief - Fuel Tank Venting procedure.







3. If removing the fuel tank assembly for replacement of the support straps or the spacers, turn in the manual lockdown valve jackscrews on the fuel tank solenoid valves.
4. Carry out the Pressure Relief - Fuel Tube Venting procedure.
5. Disconnect the battery ground cable.

All vehicles except E-450







6. Remove the front stone shield retaining bolts.







7. Remove the rear stone shield retaining bolts and the stone shield.







8. Remove the tank support strap retaining bolts and the tank support strap.

E-450 vehicles







9. Remove the front stone shield retaining bolts.







10. Remove the rear stone shield retaining bolts and the stone shield.







11. Remove the tank support strap retaining bolts and the tank support strap.

All vehicles







12. Disconnect the fuel tank assembly solenoid valves.
- Disconnect the electrical connectors from the fuel tank solenoid valves.
- Disconnect the high-pressure fuel tube from the forward fuel tank solenoid valve.







13. Install the Powertrain Lift with Tilting Plate and NGV fuel cell handler rubber pad.
1 Position the Power Lift with Tilting Plate and NGV fuel cell handler rubber pad.
2 Secure the fuel tank assembly with a nylon tie-down strap.







14. Remove the front fuel tank assembly retaining nuts.







15. Remove the rear fuel tank assembly retaining bolts.







16. Carefully lower and remove the aft-axle fuel tank assembly from the vehicle.

INSTALLATION

1. NOTE:
- Replace the fuel tube O-ring seal.
- Lubricate the fuel tube O-ring seal with clean engine oil meeting prior to installation.
- When tightening the fuel tube, a torque wrench adapter must be used with the torque wrench. The use of a torque wrench adapter will alter the effective torque of the torque wrench being used. To correct the effective torque, a torque multiplication conversion must be used.
- After installation, perform the fuel system leak test procedure.

To install, reverse the removal procedure.