15. NOTE: Inspect the surfaces of the Fuel Pump and Sender Unit flange and fuel tank O-ring seal contact surfaces. Do not polish or adjust the O-ring seal contact area of the fuel tank flange or the fuel tank. Install a new Fuel Pump and Sender Unit or fuel tank if the O-ring seal contact area is bent, scratched or corroded.
Install a new Fuel Level Sensor O-ring seal.
16. NOTICE: Carefully install the Fuel Tank Sender Unit lock ring wrench to avoid damage to the fuel
level sensor when removing the lock ring.
Using the special tool install the fuel level sensor lock ring. Use Special Service Tool: 310-123 Locking Ring, Fuel Tank.
17. NOTE: Clean the fuel level sensor connections, flange surfaces and the immediate surrounding area of
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.