10. Install the muffler and tailpipe. Refer to: MUFFLER AND TAILPIPE - 2.3L EcoBoost (231kW/314PS).
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.
11. Install a new Fuel Pump and Sender Unit O-ring seal.
NOTE: Carefully install the Fuel Tank Sender Unit lock ring wrench to avoid damage to the Fuel Pump and Sender Unit when removing the lock ring.
12. Using the special tool install the Fuel Pump and Sender Unit lock ring.
Use Special Service Tool: 310-123 Locking Ring, Fuel Tank.
13. Connect electrical connector and fuel tube quick release coupling. Refer to: QUICK RELEASE COUPLING - 2.3L EcoBoost (231kW/314PS).
Original technical text and illustrations, formatted as HTML. Follow the engine, transmission, equipment, model and year specified in the source. Import and layout checks do not establish applicability to every 2015–2017 Mustang. About this collection.