Ford Transit 2002 Owner's Manual page 1452

7. Remove the fuel level sensor gauge.
8. Remove the fuel level sensor.
Discard the fuel level sensor gasket.
Installation
NOTE: Install a new fuel level sensor gasket.
1.
To install, reverse the removal procedure.
WARNING: Before the vehicle is tested
2.
for normal operation, carry out the fuel
system leak test. Failure to follow this
instruction may result in personal injury.
Check the fuel system for leaks.
For additional information, refer to:
Leak Test (310-00B Fuel System - General
Information - 1.8L Duratec-DOHC (85kW/115PS)
- Zetec, Liquefied Petroleum Gas (LPG), General
Procedures).
http://vnx.su
Fuel System