Navigator 4WD V8-5.4L VIN 5 (2006)
8. 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 LH catalytic converter and loosely install the nuts to the exhaust manifold.
RH and LH catalytic converters
9. Align the exhaust system.
10. To seat the RH catalytic converter to the RH exhaust manifold, tighten the new catalytic converter nuts in this sequence.
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Tighten the upper nut to 40 Nm (30 ft. lbs.).
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Tighten the lower nut to 40 Nm (30 ft. lbs.).
11. Tighten the transmission mounting bracket isolator cap bolt.
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Tighten to 35 Nm (26 ft. lbs.).
12. Tighten the RH catalytic converter-to-LH catalytic converter clamp.
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Tighten to 48 Nm (35 ft. lbs.).