2004 INFINITI QX56 Factory Service Manual

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Page 1897 of 3371

INFINITI QX56 2004 Factory Service Manual EM-14Revision: August 2007
AIR CLEANER AND AIR DUCT
2004 QX56
AIR CLEANER AND AIR DUCTPFP:16500
Removal and InstallationEBS00ILE
REMOVAL
1. Remove the engine room cover using power tool. Refer to EM-1

Page 1898 of 3371

INFINITI QX56 2004 Factory Service Manual INTAKE MANIFOLD
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INTAKE MANIFOLDPFP:14003
Removal and InstallationEBS00ILF
REMOVAL
1. Partially drain the engine coolant. Refer to MA-12,

Page 1899 of 3371

INFINITI QX56 2004 Factory Service Manual EM-16Revision: August 2007
INTAKE MANIFOLD
2004 QX56
Perform the following steps to disconnect the quick connector
using Tool.
a. Remove quick connector cap (engine side only).
b. With the sleeve si

Page 1900 of 3371

INFINITI QX56 2004 Factory Service Manual INTAKE MANIFOLD
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INSTALLATION
Installation is in the reverse order of removal.
Tighten the intake manifold bolts in numerical order as sh

INTAKE MANIFOLD
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INSTALLATION
Installation is in the reverse order of removal.
Tighten the intake manifold bolts in numerical order as shown.
Install the EVAP canister purge control solenoid valve connector with it facing front of engine.
Tighten the electronic throttle control actuator bolts of the electric throttle control actuator equally and
diagonally in several steps.
After installation perform procedure in EM-18, "INSPECTION AFTER INSTALLATION" .
Install the water hose so that its overlap width for connection is between 27 mm (1.06 in) and 32 mm (1.26
in) (target: 27 mm 1.06 in).
Connecting Quick Connector of Fuel Tube
Install quick connector as follows (the steps are the same for quick connectors on both engine side and vehi-
cle side except for the quick connector cap).
1. Make sure no foreign substances are deposited in and around tube and quick connector, and they are not
damaged.
2. Thinly apply new engine oil around the fuel tube from tip end to the spool end.
3. Align center to insert quick connector straight into fuel tube.
Insert until the paint mark for engagement identification
(white) goes completely inside quick connector so that you
cannot see it from the straight side of the connected part. Use
a mirror to check this where it is not possible to view directly
from the straight side, such as quick connector on vehicle
side.
Insert fuel tube into quick connector until top spool is com-
pletely inside quick connector, and 2nd level spool exposes
right below quick connector on engine side.
CAUTION:
Hold A position in illustration when inserting fuel tube
into quick connector.
Carefully align center to avoid inclined insertion to pre-
vent damage to O-ring inside quick connector.
Insert until you hear a “click” sound and actually feel
the engagement.
To avoid misidentification of engagement with a similar
sound, be sure to perform the next step.
4. Pull quick connector by hand holding A position. Make sure it is completely engaged (connected) so that it
does not come out from fuel tube.
NOTE:
Recommended pulling force is 50 N (5.1 kg, 11.2 lb).
KBIA2462E
PBIC0017E
KBIA0272E

Page 1901 of 3371

INFINITI QX56 2004 Factory Service Manual EM-18Revision: August 2007
INTAKE MANIFOLD
2004 QX56
5. Install the quick connector cap on the quick connector joint (on
engine side only).
6. Install the fuel hose and tube to hose clamps.
7. Refill

Page 1902 of 3371

INFINITI QX56 2004 Factory Service Manual EXHAUST MANIFOLD AND THREE WAY CATALYST
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EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
Removal and InstallationEBS00ILG
REMOVAL
WA RN I

Page 1903 of 3371

INFINITI QX56 2004 Factory Service Manual EM-20Revision: August 2007
EXHAUST MANIFOLD AND THREE WAY CATALYST
2004 QX56
c. Remove the air fuel ratio A/F sensors from both left and right
exhaust manifolds using Tool.
CAUTION:
Be careful not to

Page 1904 of 3371

INFINITI QX56 2004 Factory Service Manual EXHAUST MANIFOLD AND THREE WAY CATALYST
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Tighten the exhaust manifold nuts in the numerical order shown.
Then recheck the torque of the n

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