Catalytic Converter - 6.0L Diesel: Installation
WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Do not tighten any fasteners until all components are aligned.
- Clean the mating surface of the exhaust Y-pipe flange-to-catalytic converter flange.
- Position the catalytic converter and connect the rubber isolator.
- Loosely install 2 new catalytic converter-to-exhaust downpipe nuts.
- Place the new coupling on the catalytic converter-to-muffler joint or, if equipped, catalytic converter-to-exhaust intermediate pipe joint. Make sure the coupling is installed no more the 4 mm (0.15 in) from the back of the button on the end of the pipe.
- Align the exhaust system. For additional information refer to Exhaust System Alignment in this article.
- Tighten the catalytic converter-to-exhaust downpipe nuts.
- Tighten to 47 Nm (35 lb-ft).
- Tighten the catalytic converter-to-muffler coupling or, if equipped, catalytic converter-to-exhaust intermediate pipe coupling.
- Tighten to 55 Nm (41 lb-ft).
NOTE:
Using an abrasive pad, clean the exhaust coupling surface area of any surface rust.