Nissan Frontier D40. Manual — part 631
EX-4
< ON-VEHICLE MAINTENANCE >
EXHAUST SYSTEM
ON-VEHICLE MAINTENANCE
EXHAUST SYSTEM
Checking Exhaust System
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Check exhaust pipes, muffler and mounting for improper attachment, leaks, cracks, damage or deterioration.
• If anything is found, repair or replace damaged parts.
SMA211A
EXHAUST SYSTEM
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< ON-VEHICLE REPAIR >
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ON-VEHICLE REPAIR
EXHAUST SYSTEM
Exploded View
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Exhaust System QR25DE
WBIA0734E
1.
Tailpipe
2.
Tailpipe hanger bracket
3.
Muffler hanger bracket rear
4.
Main muffler
5.
Muffler hanger bracket front
6.
Center exhaust tube
7.
Gasket
8.
Heated oxygen sensor 2
9.
Front exhaust tube
10. Ring gasket
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< ON-VEHICLE REPAIR >
EXHAUST SYSTEM
Exhaust System VQ40DE
Removal and Installation
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WARNING:
• Perform the operation with the exhaust system fully cooled. The system will be hot just after the
engine stops.
• Be careful not to cut your hand on the heat insulator edge.
CAUTION:
• Be sure to use genuine exhaust system parts or equivalents which are specially designed for heat
resistance, corrosion resistance, and shape.
REMOVAL
Remove exhaust system components using power tool.
• Remove heated oxygen sensor using Tool as needed.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Always replace exhaust gaskets with new ones when reassembling.
• Before installing a new heated oxygen sensor, clean and lube the exhaust tube threads using suit-
able tool.
AWBIA0865GB
1.
Tailpipe hanger bracket
2.
Tailpipe
3.
Gasket
4.
Main muffler
5.
Right front exhaust tube
6.
Ring gasket
7.
Heated oxygen sensor 2 (bank 1)
8.
Heated oxygen sensor 2 (bank 2)
9.
Left front exhaust tube
10. Center exhaust tube
11. Muffler hanger bracket front
12. Muffler hanger bracket rear
Front
Tool number
: KV10114400 (J-38365)
Oxygen sensor thread cleaner
:
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(J-43897-18)
Oxygen sensor thread cleaner
:
—
(J-43897-12)
EXHAUST SYSTEM
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• Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; install a new one.
• Do not over-tighten the heated oxygen sensor. Doing so may damage the heated oxygen sensor,
resulting in the MIL coming on.
• If any mounting insulator is badly deformed, repair or replace it. If deposits such as mud pile up on
the mounting insulators, clean and inspect them.
• Temporarily tighten the nuts on the exhaust manifold side and the bolts on the vehicle side. Check
each part for interference with other components, and then tighten the nuts and bolts to specifica-
tion.
INSPECTION AFTER INSTALLATION
• With the 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.
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