engine INFINITI M35 2006 Factory Service Manual

AIR CLEANER AND AIR DUCT
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Revision: 2006 January2006 M35/M45
AIR CLEANER AND AIR DUCTPFP:16500
ComponentsNBS004MX
Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS004MY
REMOVAL
1. Remove engine room cover (RH and LH). Refer to EM-14, "ENGINE ROOM COVER" .
2. Remove air duct (inlet).
3. Disconnect mass air flow sensor harness connector.
4. Disconnect PCV hose.
5. Remove air cleaner case/mass air flow sensor assembly and air duct/air hose disconnecting their joints.
Add marks as necessary for easier installation.
6. Remove mass air flow sensor from air cleaner case, as necessary.
CAUTION:
Handle mass air flow sensor with the following cares.
Do not shock it.
Do not disassemble it.
Do not touch its sensor.
INSTALLATION
Note the following, and install in the reverse order of removal.
Align marks. Attach each joint. Screw clamps firmly.
1. Air cleaner filter 2. Holder 3. Air duct (inlet)
4. Grommet 5. Air cleaner case 6. O-ring
7. Mass air flow sensor 8. Air hose 9. Air duct
10. Air hose 11. PCV hose
A. To electric throttle control actuator B. To rocker cover (left bank)
KBIA3542J

EM-18
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AIR CLEANER AND AIR DUCT
Revision: 2006 January2006 M35/M45
Changing Air Cleaner FilterNBS004MZ
REMOVAL
1. Remove engine room cover (LH). Refer to EM-14, "ENGINE ROOM COVER" .
2. Unhook clips (1) and remove holder (3) from air cleaner case
(2).
3. Remove air cleaner filter (2) from air cleaner case (1).
INSTALLATION
Note the following, and install in the reverse order of removal.
Install the air cleaner filter by aligning the seal with the notch of air cleaner case.
KBIA3584J
KBIA3585J

INTAKE MANIFOLD COLLECTOR
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Revision: 2006 January2006 M35/M45
INTAKE MANIFOLD COLLECTORPFP:14003
ComponentsNBS004N0
Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS004N1
REMOVAL
WAR NING :
To avoid the danger of being scalded, never drain engine coolant when the engine is hot.
Gasket for intake manifold collector (upper) is secured together with mounting bolt for intake man-
ifold collector (lower). Thus, even when only gasket for upper side is replaced, gasket for lower
side must be also replaced.
1. Vacuum hose 2.EVAP canister purge volume control
solenoid valve3. Vacuum hose
4. Bracket 5. Intake manifold collector (upper) 6. Water hose
7. Water hose 8. Gasket 9. Electric throttle control actuator
10. Bracket 11. PCV hose 12. Bracket
13. Gasket 14. Intake manifold collector (lower) 15. Gasket
16. Intake manifold collector cover
A. To vacuum pipe B. To water outlet C. To heater pipe
D. To PCV valve
KBIA3590J

EM-20
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INTAKE MANIFOLD COLLECTOR
Revision: 2006 January2006 M35/M45
1. Remove engine cover (1) with power tool.
2. Disconnect water hoses from intake manifold collector (upper), attach blind plug to prevent engine coolant
leakage.
CAUTION:
Perform this step when the engine is cold.
Do not spill engine coolant on drive belts.
3. Remove air cleaner case and air duct. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
4. Remove electric throttle control actuator as follows:
a. Disconnect harness connector.
b. Loosen mounting bolts in reverse order as shown in the figure.
CAUTION:
Handle carefully to avoid any shock to electric throttle
control actuator.
Do not disassemble.
5. Remove fuel sub-tube mounting bolt to disconnect from rear of intake manifold collector (lower). Refer to
EM-45, "
FUEL INJECTOR AND FUEL TUBE" .
6. Disconnect vacuum hose from intake manifold collector (upper).
7. Remove EVAP canister purge volume control solenoid valve and bracket mounting bolt from intake mani-
fold collector (upper).
PBIC3507E
KBIA0957E

INTAKE MANIFOLD COLLECTOR
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Revision: 2006 January2006 M35/M45
8. Loosen mounting bolts in reverse order of illustration to remove
intake manifold collector (upper) with power tool.
9. Remove PCV hose [between intake manifold collector (lower) and rocker cover (right bank)].
10. Loosen mounting bolts in reverse order as shown in the figure,
and remove intake manifold collector cover, gasket, intake man-
ifold collector (lower) and gasket with power tool.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion
Check the surface distortion of both the intake manifold collector
(upper and lower) mating surfaces with a straightedge and a
feeler gauge.
If it exceeds the limit, replace intake manifold collector (upper
and/or lower).
PBIC1094E
PBIC0774E
Limit : 0.1 mm (0.004 in)
PBIC0775E

EM-24
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INTAKE MANIFOLD
Revision: 2006 January2006 M35/M45
INTAKE MANIFOLDPFP:14003
ComponentsNBS004N2
Removal and InstallationNBS004N3
REMOVAL
1. Release fuel pressure. Refer to EC-98, "FUEL PRESSURE RELEASE" .
2. Remove intake manifold collectors (upper and lower). Refer to EM-19, "
INTAKE MANIFOLD COLLEC-
TOR" .
3. Remove fuel tube and fuel injector assembly. Refer to EM-45, "
FUEL INJECTOR AND FUEL TUBE" .
4. Loosen mounting bolts and nuts in reverse order as shown in
the figure to remove intake manifold with power tool.
5. Remove gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
1. Harness bracket 2. Intake manifold 3. Gasket
SBIA0487E
PBIC0778E

EM-26
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EXHAUST MANIFOLD
Revision: 2006 January2006 M35/M45
EXHAUST MANIFOLDPFP:14004
ComponentsNBS004N4
Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS004N5
REMOVAL
WAR NING :
Perform the work when the exhaust and cooling system have completely cooled down.
1. Remove engine room cover (RH and LH). Refer to EM-14, "
ENGINE ROOM COVER" .
2. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
3. Remove air cleaner case and air duct. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
4. Remove front and rear engine undercover with power tool.
5. Remove exhaust front tube and three way catalysts (right and left bank). Refer to EX-3, "
EXHAUST SYS-
TEM" .
6. Disconnect air fuel ratio sensor 1 (bank 1 and bank 2) harness connectors and remove harness clip.
1. Air fuel ratio sensor 1 (bank 1) 2. Exhaust manifold cover (right bank) 3. Exhaust manifold (right bank)
4. Gasket 5. Stud bolt 6. Exhaust manifold (left bank)
7. Exhaust manifold cover (left bank) 8. Air fuel ratio sensor 1 (bank 2)
PBIC3200E

EXHAUST MANIFOLD
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Revision: 2006 January2006 M35/M45
7. Using the heated oxygen sensor wrench (SST), remove air fuel
ratio sensor 1 (bank 1 and bank 2).
CAUTION:
Be careful not to damage air fuel ratio sensor 1.
Discard any air fuel ratio sensor 1 which has been
dropped onto a hard surface such as a concrete floor;
replace with a new sensor.
8. Remove exhaust manifold cover (right and left bank).
9. Loosen mounting nuts in the reverse order as shown in the fig-
ure to remove exhaust manifold with power tool.
NOTE:
Disregard the numerical order No. 7 and 8 in removal.
10. Remove gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion
Check the surface distortion of the exhaust manifold mating sur-
face with a straightedge and a feeler gauge.
If it exceeds the limit, replace exhaust manifold.
INSTALLATION
Note the following, and install in the reverse order of removal.
SBIA0575E
PBIC2042E
Limit : 0.3 mm (0.012 in)
PBIC1096E

OIL PAN AND OIL STRAINER
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Revision: 2006 January2006 M35/M45
OIL PAN AND OIL STRAINERP F P : 1111 0
Components (2WD Models)NBS004N6
Removal and Installation (2WD Models)NBS004N7
REMOVAL
CAUTION:
To avoid the danger of being scalded, never drain engine oil when the engine is hot.
NOTE:
When removing oil pan (lower) only, steps 2 to 6 are not necessary. Perform step 22 after completing step 7.
1. Remove front and rear engine undercover with power tool.
2. Remove front tire.
1. Oil pan gasket (rear) 2. Oil pan (upper) 3. O-ring
4. Oil pan gasket (front) 5. Oil filter 6. Connector bolt
7. Oil cooler 8. O-ring 9. Relief valve
10. Oil pressure switch 11. Bracket 12. Oil strainer
13. Drain plug 14. Drain plug washer 15. Oil pan (lower)
16. Baffle plate 17. Rear plate cover 18. Crankshaft position sensor (POS)
19. Seal rubber 20. Rear cover plate
PBIC3877E

EM-30
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OIL PAN AND OIL STRAINER
Revision: 2006 January2006 M35/M45
3. Remove hood assembly. Refer to BL-15, "HOOD" .
4. Remove engine room cover (RH and LH). Refer to EM-14, "
ENGINE ROOM COVER" .
5. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
6. Remove air duct (inlet). Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
7. Drain engine oil. Refer to LU-9, "
Changing Engine Oil" .
CAUTION:
Perform this step when the engine is cold.
Do not spill engine oil on drive belts.
8. Drain engine coolant. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:
Perform this step when the engine is cold.
Do not spill engine coolant on drive belts.
9. Remove air duct from air cleaner case. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
10. Remove stabilizer clamp, and then obtain the space under the oil pan (lower) by lowering the stabilizer.
Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
NOTE:
If the oil pan (upper) is removed, this procedure is not necessary.
11. Install engine slinger to sling engine assembly for positioning. Refer to EM-113, "
ENGINE ASSEMBLY" .
12. Remove front suspension member. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
13. Remove drive belts. Refer to EM-15, "
DRIVE BELTS" .
14. Remove alternator stay. Refer to SC-23, "
CHARGING SYSTEM" .
15. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
16. Remove idler pulley and bracket assembly. Refer to EM-64, "
TIMING CHAIN" .
17. Disconnect oil cooler water hoses, and remove oil cooler water pipe mounting bolt. Refer to LU-14, "
OIL
COOLER" .
18. Disconnect A/T fluid cooler hoses, and remove A/T fluid cooler tube. Refer to AT- 2 7 1 , "
TRANSMISSION
ASSEMBLY" .
19. Remove crankshaft position sensor (POS).
CAUTION:
Handle carefully to avoid dropping and shocks.
Do not disassemble.
Do not allow metal powder to adhere to magnetic part at sensor tip.
Do not place sensors in a location where they are exposed to magnetism.
20. Remove oil filter, as necessary. Refer to LU-10, "
OIL FILTER" .
21. Remove oil cooler, as necessary. Refer to LU-14, "
OIL COOLER" .
22. Remove oil pan (lower) as follows:
a. Loosen mounting bolts in reverse order as shown in the figure to
remove.Slinger bolts:
: 28.0 Nꞏm (2.9 kg-m, 21 ft-lb)
PBIC0782E