Infiniti M35/M45 Y50. Manual - part 758
EXHAUST SYSTEM
EX-5
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Removal and Installation
NBS005RL
CAUTION:
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Be sure to use genuine exhaust system parts or equivalents which are specially designed for heat
resistance, corrosion resistance, and shape.
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Perform the operation with the exhaust system fully cooled down because the system will be hot
just after engine stops.
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Be careful not to cut your hand on the heat insulator edge.
REMOVAL
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Disconnect each joint and mounting using power tool.
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Remove heated oxygen sensor 2 as follows:
–
Using heated oxygen sensor wrench (SST), removal heated
oxygen sensor 2.
CAUTION:
Be careful not to damage heated oxygen sensor 2.
INSTALLATION
Note the following, and install in the reverse order of removal.
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Check for deformation of the grommets (18 and 20 of Components).
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Insert the collar (17 of Components) vertically.
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Install the collar (5 of Components) with its lower surface horizontal.
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Temporarily tighten nuts and bolts when installing exhaust pipe assembly. Tighten them to the specified
torque when connecting the vehicle rear to the vehicle front.
CAUTION:
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Always replace exhaust tube gaskets with new ones when reassembling.
●
Discard any heated oxygen sensor which has been dropped onto a hard surface such as a con-
crete floor. Use a new one.
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Before installing a new heated oxygen sensor, clean exhaust system threads using the heated
oxygen sensor thread cleaner [commercial service tool: J-43897-18 or J-43897-12], and apply the
anti-seize lubricant (commercial service tool).
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Do not over torque heated oxygen sensor. Doing so may cause damage to heated oxygen sensor,
resulting in the “MIL” coming on.
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If heat insulator is badly deformed, repair or replace it. If deposits such as mud pile up on the heat
insulator, remove them.
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When installing heat insulator avoid large gaps or interference between heat insulator and each
exhaust pipe.
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Remove deposits from the sealing surface of each connection. Connect them securely to avoid
gases leakage.
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Temporarily tighten mounting nuts on the exhaust manifold side and mounting bolts on the vehi-
cle side. Check each part for unusual interference, and then tighten them to the specified torque.
●
When installing each mounting rubber, avoid twisting or unusual extension in up/down and right/
left directions.
INSPECTION AFTER INSTALLATION
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Make sure clearance between tail tube and rear bumper is even.
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With engine running, check exhaust tube joints for gas leakage and unusual noises.
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Check to ensure that mounting brackets and mounting rubbers are installed properly and free from undue
stress. Improper installation could result in excessive noise and vibration.
PBIC2298E