Pathfinder 2WD V6-4.0L (VQ40DE) (2009)
Exhaust manifold stud torque : 14.7 N.m (1.5 kg-m, 11 ft-lb)
Left
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Install exhaust manifold and tighten nuts in numerical order as shown.
CAUTION:
Use new exhaust manifold nuts for installation.
NOTE:
Tighten nuts No. 1 and 2 in two steps. The numerical order No. 7 and 8 show second step.
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Arrow Indicates Front
Heated Oxygen Sensor
CAUTION:
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Do not over tighten air fuel ratio sensor 1 and heated oxygen sensor 2. Doing so may cause damage to air fuel ratio sensor 1 and heated
oxygen sensor 2, resulting in the "MIL" coming on.
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Before installing a new air fuel ratio sensor 1 and heated oxygen sensor 2, clean exhaust system threads using oxygen sensor thread
cleaner and apply anti-seize lubricant.
REMOVAL (RH)
1. Remove engine assembly. Refer to See: Engine/Service and Repair/Removal and Replacement/Engine Assembly/Removal and Installation.
2. Loosen nuts with power tool in reverse order as shown.
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Arrow Indicates Front
NOTE:
Disregard the numerical order No. 7 and 8 in removal.
3. Remove gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion