Expedition 2WD V8-5.4L (2009)
All vehicles
7. Remove the 2 exhaust Y-pipe dual catalytic converter-to-muffler assembly bolts.
8. NOTE: LH catalytic converter-to-exhaust manifold nuts shown, RH similar.
Remove the 4 exhaust Y-pipe dual catalytic converter-to-exhaust manifold nuts.
-
Discard the nuts.
9. Remove the exhaust Y-pipe dual catalytic converter from the vehicle.
4WD vehicles
10. If necessary, remove the exhaust and transmission mounting bracket from the exhaust Y-pipe dual catalytic converter.
All vehicles
11. If necessary, loosen the RH catalytic converter-to-LH catalytic converter Torca(R) clamp.
12. If necessary, separate the RH catalytic converter from the LH catalytic converter.
Installation
All vehicles
NOTICE: Do not tighten the fasteners until all components are assembled and aligned, making sure to tighten all fasteners beginning at the
front of the vehicle. For additional information, refer to Exhaust System Alignment See: Service and Repair.
NOTE: Clean the mating surfaces of the exhaust manifold outlet flare and the exhaust Y-pipe dual catalytic converter inlet flares. Also clean the mating
surfaces of the exhaust Y-pipe dual catalytic converter-to-muffler assembly.
1. If separated, install RH catalytic converter to the LH catalytic converter.
4WD vehicles
2. If removed, install the exhaust and transmission mounting bracket to the exhaust Y-pipe dual catalytic converter.
All vehicles
3. Position the exhaust Y-pipe dual catalytic converter into the vehicle.
4. Install the 2 new RH catalytic converter-to-exhaust manifold nuts and tighten in the following sequence:
1. Tighten the RH lower catalytic converter-to-exhaust manifold nut.
-
Tighten to 40 Nm (30 lb-ft).
2. Tighten the RH upper catalytic converter-to-exhaust manifold nut.
-
Tighten to 40 Nm (30 lb-ft).
