Engine INFINITI FX35 2004 Service Manual

EM-170
[VK45DE]
DRIVE BELTS
Revision: 2004 November 2004 FX35/FX45
5. Remove alternator, water pump and A/C compressor belt.
Power Steering Oil Pump Belt
1. Remove air duct (inlet). Refer to EM-172, "AIR CLEANER AND AIR DUCT" .
2. Front engine undercover with power tool
3. Remove alternator, water pump and A/C compressor belt. Refer to EM-169, "
Alternator, Water Pump and
A/C Compressor Belt" .
4. While securely holding the hexagonal protrusion part of auto
tensioner pulley with box wrench, move wrench handle in the
direction of arrow (loosening direction of tensioner).
CAUTION:
Avoid placing hand in a location where pinching may occur
if holding tool accidentally comes off.
5. Under the above condition, insert a metal bar of approximately 6
mm (0.24 in) in diameter (hexagonal bar wrench shown as
example in the figure) through the holding boss to lock auto ten-
sioner pulley arm.

Leave auto tensioner pulley arm locked until belt is installed
again.
6. Remove power steering oil pump belt.
INSTALLATION
Note to the following, and install in the reverse order of removal.
CAUTION:

Make sure belt is securely installed around all pulleys.

Make sure belt is correctly engaged with the pulley groove.

Check for engine oil and engine coolant are not adhered belt and pulley groove.

Check that belt tension is within the allowable working range, using indicator notch on auto ten-
sioner. Refer to EM-169, "
Checking Drive Belts" .
PBIC1543E

DRIVE BELTS
EM-171
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Revision: 2004 November 2004 FX35/FX45
Drive Belt Auto Tensioner and Idler PulleyABS006IA
REMOVAL
1. Remove air duct (inlet). Refer to EM-172, "AIR CLEANER AND AIR DUCT" .
2. Front engine undercover with power tool.
3. Remove drive belts. Refer to EM-169, "
Removal and Installation" .

Keep auto tensioner pulley arm locked after belt is removed.
4. Remove auto tensioner and idler pulley with power tool.

Keep auto tensioner pulley arm locked to install or remove auto tensioner.
INSTALLATION
Install in the reverse order of removal.
PBIC1544E

EM-172
[VK45DE]
AIR CLEANER AND AIR DUCT
Revision: 2004 November 2004 FX35/FX45
AIR CLEANER AND AIR DUCTPFP:16500
Removal and InstallationABS006IB
REMOVAL
1. Remove engine cover with power tool. Refer to EM-168, "ENGINE ROOM COVER" .
2. Disconnect harness connector from mass air flow sensor.
3. Disconnect vacuum hose and PCV hose.
4. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly, air duct and resonator
assembly disconnecting their joints.

Add marks as necessary for easier installation.
5. Remove mass air flow sensor from air cleaner case.
CAUTION:
Handle mass air flow sensor with following cares.

Do not shock it.

Do not disassemble it.

Do not touch its sensor.
INSTALLATION
Note to the following, and install in the reverse order of removal.
1. Air duct and resonator assembly 2. Bracket 3. Vacuum hose
4. Mass air flow sensor 5. O-ring 6. Air cleaner case
7. Air cleaner filter 8. Cover 9. Air cleaner case
10. Resonator 11. Mounting rubber 12. Air duct (inlet)
13. Clip
PBIC1657E

EM-174
[VK45DE]
INTAKE MANIFOLD
Revision: 2004 November 2004 FX35/FX45
INTAKE MANIFOLDPFP:14003
Removal and InstallationABS006IC
REMOVAL
WARNING:
To avoid the danger of being scalded, never drain the engine coolant when the engine is hot.
1. PCV tube 2. Engine cover rear bracket 3.EVAP canister purge control sole-
noid valve
4. EVAP hose 5. EVAP tube 6. EVAP hose
7. Vacuum gallery 8. Engine cover front bracket 9. Vacuum tank
10. VIAS control solenoid valve 11. Water gallery 12. Gasket
13. Intake manifold (lower) 14. Gasket 15. Water hose
16. Intake manifold adapter 17. Electric throttle control actuator 18. Gasket
19. Intake manifold (upper) 20. Resonator 21. EVAP service port
PBIC3502E

INTAKE MANIFOLD
EM-175
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Revision: 2004 November 2004 FX35/FX45
1. Remove engine cover with power tool. Refer to EM-168, "ENGINE ROOM COVER" .
2. Release fuel pressure. Refer to EC-700, "
FUEL PRESSURE RELEASE" .
3. Drain engine coolant. Refer to CO-36, "
Changing Engine Coolant" .
4. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly, air duct and resonator
assembly. Refer to EM-172, "
AIR CLEANER AND AIR DUCT" .
5. Disconnect fuel feed hose quick connector on engine side.
Refer to EM-188, "
FUEL INJECTOR AND FUEL TUBE" .
6. Remove fuel damper and fuel hose assembly. Refer to EM-188, "
FUEL INJECTOR AND FUEL TUBE" .
CAUTION:

While hoses are disconnected, plug them to prevent fuel from draining.

Do not separate fuel damper and fuel hose.
7. Remove or disconnect harnesses, brackets, vacuum hose, vacuum gallery and PCV hose and tube from
intake manifold (upper).
8. Remove electric throttle control actuator as follows:
a. Disconnect harness connector.
b. Loosen mounting bolts diagonally.
CAUTION:

Handle carefully to avoid any shock to electric throttle control actuator.

Do not disassemble.
9. Disconnect water hoses from water gallery.
10. Remove intake manifold adaptor and water gallery.
11. Loosen bolts in reverse order as shown in the figure to remove
intake manifold (upper) with power tool.
12. Remove vacuum tank form intake manifold (lower).
13. Remove fuel injector and fuel tube assembly. Refer to EM-188, "
FUEL INJECTOR AND FUEL TUBE" .
14. Loosen bolts in reverse order as shown in the figure to remove
intake manifold (lower) with power tool.
SBIA0353E
PBIC0014E
PBIC0015E

EM-176
[VK45DE]
INTAKE MANIFOLD
Revision: 2004 November 2004 FX35/FX45
15. Remove intake manifold gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion

Check the surface distortion of both the intake manifold (upper
and lower) mating surfaces with straightedge and feeler gauge.

If it exceeds the limit, replace intake manifolds (lower and/or
upper).
INSTALLATION
Note to the following, and install in the reverse order of removal:
Intake Manifold (Lower)
Tighten in numerical order as shown in the figure.

There are two types of mounting bolts. Refer to the following for
locating bolts.
Intake Manifold (Upper)
Tighten in numerical order as shown in the figure.

There are two types of mounting bolts. Refer to the following for
locating bolts
Electric Throttle Control Actuator

Install intake manifold adapter gasket and electric throttle control actuator gasket so that three protrusions
for installation identification do not face downward.

Tighten mounting bolts of electric throttle control actuator equally and diagonally in several steps.

After installation perform procedure in EM-177, "INSPECTION AFTER INSTALLATION" .
Water Hose
Insert hose by 27 to 32 mm (1.06 to 1.26 in) from connector end.
Vacuum Hose
Refer to EC-677, "Vacuum Hose Drawing" . Limit : 0.1 mm (0.004 in)
PBIC0016E
M8 × 90 mm (3.54 in) : 7, 8
M8 × 35 mm (1.38 in) Except the above
PBIC0015E
M8 × 80 mm (3.15 in) : 4, 5, 6, 7
M8 × 25 mm (0.98 in) : Except the above
PBIC0014E

EM-178
[VK45DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2004 November 2004 FX35/FX45
EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
Removal and InstallationABS006ID
REMOVAL
WARNING:
Perform the work, when the exhaust and cooling system have completely cooled down.
1. Remove engine cover with power tool. Refer to EM-168, "
ENGINE ROOM COVER" .
2. Remove front and rear engine undercovers with power tool.
3. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly, air duct and resonator
assembly. Refer to EM-172, "
AIR CLEANER AND AIR DUCT" .
4. Remove front cross bar. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
5. Drain engine coolant from radiator. Refer to CO-36, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
6. Remove radiator. Refer to CO-39, "
RADIATOR" .
7. Remove drive belts. Refer to EM-169, "
DRIVE BELTS" .
8. Remove heated oxygen sensors as follows:
a. Disconnect harness connector of each heated oxygen sensors.
1. Heated oxygen sensor 1 (bank 2) 2. Exhaust manifold cover (right bank) 3. Exhaust manifold (right bank)
4. Gasket 5. Exhaust manifold (left bank) 6. Exhaust manifold cover (left bank)
7. Heated oxygen sensor 1 (bank 1) 8. Three way catalyst cover (right bank) 9. Three way catalyst (right bank)
10. Heated oxygen sensor 2 (bank 2) 11. Gasket 12. Three way catalyst cover (left bank)
13. Heated oxygen sensor 2 (bank 1) 14. Three way catalyst (left bank) 15. Mounting bracket
16. Mounting bracket
PBIC3503E

EXHAUST MANIFOLD AND THREE WAY CATALYST
EM-179
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Revision: 2004 November 2004 FX35/FX45
b. Remove heated oxygen sensor 1 and 2 on both bank with
heated oxygen sensor wrench (SST).

Put marks to identify installation positions of each heated oxy-
gen sensor.
CAUTION:

Be careful not to damage heated oxygen sensor.

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; replace with a new
one.
9. Remove exhaust mounting bracket between three way catalysts (right and left bank) and transmission.
Refer to EX-3, "
EXHAUST SYSTEM" .
10. Disconnect A/C piping from A/C compressor, then remove A/C compressor with power tool. Refer to AT C -
139, "Components" .
11. Remove alternator and bracket. Refer to SC-23, "
CHARGING SYSTEM" .
12. Remove exhaust front tube with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
13. Remove steering lower joint at power steering gear assembly side, and release steering lower shaft.
Refer to PS-19, "
POWER STEERING GEAR AND LINKAGE" .
14. Remove three way catalysts (right and left bank).
15. Remove exhaust manifold covers. (right and left bank)
16. Loosen mounting nuts in reverse order as shown in the figure to
remove exhaust manifold.
NOTE:
Disregard the numerical order No. 9 to 12 in removal.
17. Remove exhaust manifold gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
PBIC2333E
PBIC2334E
PBIC1549E

OIL PAN AND OIL STRAINER
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Revision: 2004 November 2004 FX35/FX45
OIL PAN AND OIL STRAINERP F P : 1111 0
Removal and InstallationABS006IE
REMOVAL
WARNING:
To avoid the danger of being scalded, do not drain engine oil when engine is hot.
1. Remove front tire.
2. Remove hood assembly. Refer to BL-14, "
HOOD" .
3. Remove engine cover with power tool. Refer to EM-168, "
ENGINE ROOM COVER" .
4. Remove front and rear engine undercovers with power tool.
5. Drain engine oil. Refer to LU-26, "
Changing Engine Oil" .
6. Drain engine coolant. Refer to CO-36, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
7. Remove drive belts. Refer to EM-169, "
DRIVE BELTS" .
1. Oil pan 2. O-ring 3. Crankshaft position sensor (POS)
4. O-ring 5. Oil pressure switch 6. Gasket
7. Oil strainer 8. Drain plug 9. Drain plug washer
10. O-ring 11. Oil cooler 12. Connector bolt
13. Oil filter 14. O-ring 15. Axle pipe
16. O-ring 17. Rear plate cover 18. Relief valve
PBIC1552E

EM-182
[VK45DE]
OIL PAN AND OIL STRAINER
Revision: 2004 November 2004 FX35/FX45
8. Remove auto tensioner of power steering oil pump belt. Refer to EM-171, "Drive Belt Auto Tensioner and
Idler Pulley" .
9. Remove power steering oil pump with piping connected, and temporarily secure it aside with ropes or
equivalent. Refer to PS-31, "
POWER STEERING OIL PUMP" .
10. Remove A/C compressor with piping connected, and temporarily secure it aside with ropes or equivalent.
Refer to ATC-139, "
Components" .
11. Remove A/C compressor fitting bolts, and install A/C compressor temporarily on vehicle side with ropes or
equivalent.
12. Remove harness of lower side of oil pan.
13. Remove crankshaft position sensor (POS) from transmission.
CAUTION:

Handle carefully to avoid dropping and shocks.

Do not disassemble it.

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.
14. Install engine slinger and hang engine assembly to secure position. Refer to EM-236, "
ENGINE ASSEM-
BLY" .
15. Remove front suspension member with power tool. Refer to FSU-17, "
FRONT SUSPENSION MEMBER" .
16. Remove front final drive assembly. Refer to FFD-10, "
FRONT FINAL DRIVE ASSEMBLY" .
17. Remove oil filter. Refer to LU-28, "
OIL FILTER" .
18. Disconnect oil cooler water hoses, and remove oil cooler water pipe and oil cooler. Refer to LU-29, "
OIL
COOLER" .
19. Remove oil pan as the follows:
a. Remove rear plate cover.
b. Remove transmission joint bolts which pierce oil pan. Refer to AT- 2 6 9 , "
Removal and Installation (AWD
models)" .
c. Loosen oil pan bolts with power tool in reverse order as shown
in the figure.
NOTE:
Disregard the numerical order No. 11 and No. 17 in removal.
d. Insert seal cutter (SST) between oil pan and cylinder block.
Slide seal cutter by tapping on the side of seal cutter with ham-
mer. Remove oil pan.
CAUTION:

Be careful not to damage the mating surface.

Do not insert flat-blade screwdriver, this will damage the
mating surface.
e. Remove O-rings from bottom of oil pump and front cover.
20. As necessary, pull axle pipe from oil pan.

Hold pipes and pull them out to front drive shaft (left) installing side.
21. Remove oil strainer.
PBIC0194E
SEM365E