Navigator 4WD V8-5.4L VIN 5 (2006)
10. NOTE: Use caution removing the catalytic converter. Make sure not to damage the manifold outlet flare, the converter inlet flare or the studs.
Remove the transmission mounting bracket isolator cap bolt, transmission mounting bracket isolator cap and the RH converter.
Both RH and LH catalytic converters
11. If necessary, remove the heated oxygen and the catalyst monitor sensors.
Installation
Both RH and LH catalytic converters
CAUTION: 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.
NOTE: Clean the mating surfaces of the manifold outlet flare and the catalytic converter inlet flare.
Also clean the mating surfaces of the muffler inlet pipe and catalytic converter.
Make sure not to damage the manifold outlet flare, the converter inlet flare or the studs.
NOTE: Always install new fasteners and gaskets.
1. NOTE: Make sure to apply anti-seize lubricant to the threads of the sensors before installation.
If removed, install the heated oxygen and the catalyst monitor sensors.
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Tighten to 40 Nm (30 ft. lbs.).
RH catalytic converter
2. If not already installed, position the RH catalytic converter-to-LH catalytic converter clamp.
3. NOTE: Use caution installing the catalytic converter. Make sure not to damage the manifold outlet flare, the converter inlet flare or the studs.
Position the RH catalytic converter and loosely install the nuts to the exhaust manifold.
4. Install the transmission mounting bracket isolator cap and loosely install the bolt.
5. Install the isolators to the muffler assembly.
6. Loosely install new RH catalytic converter-to-muffler bolts and flag nuts.
LH catalytic converter
7. If not already installed, position the RH catalytic converter to LH catalytic converter clamp.
