Nissan Sentra. Manual - part 449
EX-6
< REMOVAL AND INSTALLATION >
EXHAUST SYSTEM
• Remove heated oxygen sensor 2 (1) using Tool (A).
CAUTION:
• Discard any heated oxygen sensor which has been dropped
from a height of more than 0.5 m (19.7 in) onto a hard sur-
face such as a concrete floor; use a new one.
• Before installing new heated oxygen sensor, clean exhaust
system threads using oxygen sensor thread cleaner and
approved anti-seize lubricant.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Always replace seal bearings with new ones when reassembling.
• Discard any heated oxygen sensor 2 which has been dropped onto a hard surface such as a con-
crete floor. Use a new one.
• Before installing a new heated oxygen sensor 2, clean exhaust system threads using the oxygen
sensor thread cleaner and apply anti-seize lubricant.
• Do not over tighten heated oxygen sensor 2. Doing so may cause damage to the heated oxygen sen-
sor 2, resulting in the “MIL” coming on.
• Prevent rust preventives from adhering to the sensor body.
• 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 gas
fume leaks.
• When installing each mounting rubber, use silicon oil to avoid twisting.
• Temporarily tighten nuts and bolts. Check each part for unusual interference and mounting rubber
interference, and then tighten them to the specified torque.
• When installing each mounting rubber, avoid twisting or unusual extension in up/down, front/rear
and right/left directions.
Exhaust Manifold to Exhaust Front Tube
1. Securely insert seal bearing (2) into exhaust manifold (1) in the
direction shown.
CAUTION:
Be careful not to damage seal bearing surface when install-
ing.
2. Install spring and tighten nut.
CAUTION:
• Fasten stud bolts to the flange of exhaust manifold side to the specified torque before installing
nuts.
• Ensure springs are seated correctly on the flange and not sitting on protrusion (A).
• Be careful that stud bolt does not interfere with mounting hole of exhaust front tube (
).
3. After installing, check that stud bolt does not interfere with mounting hole of exhaust front tube.
Exhaust Front Tube to Center Muffler
Tool number
: KV10114400 (J-38365)
: Front
Oxygen sensor thread cleaner
: J-43897-12
Oxygen sensor thread cleaner
: J-43897-18
JPBIA4222ZZ
(3)
: Spring
(4)
: Nut
(5)
: Stud bolt
(6)
: Exhaust front tube
JPBIA2372ZZ