Infiniti G37 Coupe. Manual - part 645
EX-6
< ON-VEHICLE REPAIR >
EXHAUST SYSTEM
Removal and Installation
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REMOVAL
• Disconnect each joint and mounting using power tool.
• Remove heated oxygen sensor 2 as follows:
- Using heated oxygen sensor wrench [SST: KV10114400 (J-
38365)] (C), 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.
• Check for deformation of the grommets (13 and 15 of Components).
• Insert the collar (12 of Components) vertically.
• 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:
• 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 concrete
floor. Use a new one.
• Before installing a new heated oxygen sensor, clean exhaust system threads using the heated oxy-
gen sensor thread cleaner [commercial service tool: J-43897-18 or J-43897-12], and apply the anti-
seize lubricant (commercial service tool).
• Never over torque heated oxygen sensor. Doing so may cause damage to heated oxygen sensor,
resulting in the “MIL” coming on.
• If heat insulator is badly deformed, repair or replace it. If deposits such as mud pile up on the heat
insulator, remove them.
• When installing heat insulator avoid large gaps or interference between heat insulator and each
exhaust pipe.
• Remove deposits from the sealing surface of each connection. Connect them securely to avoid
gases leakage.
• Temporarily tighten mounting nuts on the exhaust manifold side and mounting bolts on the vehicle
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
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INSPECTION AFTER INSTALLATION
• Check clearance between tail tube and rear bumper is even.
• With engine running, check exhaust tube joints for gas leakage and unusual noises.
• 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.
A
: Bank 2
B
: Bank 1
: Vehicle front
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