Disassembly and Assembly: Assembly

Slide fuel level sensor unit (1) until it aligns to installation groove (A).
- After inserting, apply force in reverse direction (removal direction) to ensure it cannot be pulled out.
  
  Fig 1: Identifying Fuel Level Sensor Unit And Installation Groove
  Courtesy of NISSAN NORTH AMERICA, INC.
Connect fuel level sensor unit/fuel tank temperature sensor harness connectors (1).

Fig 2: Identifying Fuel Level Sensor Unit/Fuel Tank Temperature Sensor Harness Connector
Courtesy of NISSAN NORTH AMERICA, INC.
Check fuel level sensor unit installation position to fuel filter and pump assembly for damage. Replace as necessary.
Assembly of remaining components is in the reverse order of disassembly.