Belts INFINITI FX35 2005 User Guide

CO-26
[VQ35DE]
WATER INLET AND THERMOSTAT ASSEMBLY
Revision: 2005 July 2005 FX
WATER INLET AND THERMOSTAT ASSEMBLYPFP:21200
ComponentsABS00E81
Removal and InstallationABS009RF
REMOVAL
1. Remove front engine undercover using power tool.
2. Drain engine coolant from radiator drain plug at the bottom of radiator, and from water drain plug at the front of cylinder block. Refer to CO-11, "
Changing Engine Coolant" and CO-22, "WATER PUMP" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belts.
3. Remove air duct (inlet). Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
4. Disconnect radiator hose (lower) and oil cooler water hose from water inlet and thermostat assembly.
5. Remove water inlet and thermostat assembly. CAUTION:
Do not disassemble water inlet and thermostat assembly.
Replace them as a unit, if necessary.
1. Gasket 2. Water inlet and thermostat assembly
SBIA0483E
SLC962AB

CO-28
[VQ35DE]
WATER OUTLET AND WATER PIPING
Revision: 2005 July 2005 FX
WATER OUTLET AND WATER PIPINGPFP:11060
ComponentsABS00E82
Removal and InstallationABS007ZU
REMOVAL
1. Remove front engine undercover with power tool.
2. Drain engine coolant from radiator drain plug at the bottom of radiator, and from water drain plug at the front of cylinder block. Refer to CO-11, "
Changing Engine Coolant" and CO-22, "WATER PUMP" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belts.
3. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
4. Remove air duct (inlet), air duct and air cleaner case assembly. Refer to EM-17, "
AIR CLEANER AND AIR
DUCT" .
5. Remove radiator hose (upper) and heater hose.
6. Remove the following parts, when remove water outlet.

A/T fluid charging pipe; Refer to AT- 2 7 0 , "TRANSMISSION ASSEMBLY" .

Intake manifold collectors (upper and lower). Refer to EM-19, "INTAKE MANIFOLD COLLECTOR" .

Rocker cover (right bank). Refer to EM-51, "ROCKER COVER" .
7. Remove engine coolant temperature sensor as necessary. CAUTION:
Be careful not to damage engine coolant temperature sensor.
8. Remove water outlet, heater pipe, water bypass hoses and water pipe.
1. Harness bracket 2. Water hose 3. Water bypass hose
4. Engine coolant temperature sensor 5. Gasket 6. Water outlet
7. Heater hose 8. Water pipe 9. Radiator hose (upper)
10. Heater pipe 11. Washer 12. O-ring
SBIA0484E

RADIATOR CO-41
[VK45DE]
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Revision: 2005 July 2005 FX
RADIATORPFP:21400
Removal and InstallationABS006JS
WARNING:
Do not remove radiator cap when engine is hot. Serious burns could occur from high-pressure engine
coolant escaping from radiator. Wrap a thick cloth around radiator cap. Slowly turn it a quarter of a
turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.
REMOVAL
1. Remove engine cover with power tool. Refer to EM-172, "ENGINE ROOM COVER" .
2. Remove engine front undercover with power tool.
3. Drain engine coolant from radiator. Refer to CO-37, "
Changing Engine Coolant" .
CAUTION:
Perform this step when engine is cold.
4. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly. Refer to EM-176, "
AIR
CLEANER AND AIR DUCT" .
5. Remove radiator hoses (upper and lower). CAUTION:
Do not spill engine coolant on drive belts.
6. Disconnect A/T fluid cooler hoses.
1. Radiator 2. Upper mount bracket 3. Mounting rubber
4. Radiator hose (lower) 5. Radiator drain plug 6. O-ring
7. A/T fluid cooler hose 8. Radiator hose (upper) 9. Reservoir tank hose
10. Reservoir tank cap 11. Reservoir tank 12. Radiator shroud (lower)
13. Radiator shroud
PBIC1531E

COOLING FAN CO-49
[VK45DE]
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Revision: 2005 July 2005 FX
COOLING FANPFP:21140
Removal and Installation (Crankshaft Driven Type)ABS00E9P
REMOVAL
1. Remove air duct (inlet). Refer to EM-176, "AIR CLEANER AND AIR DUCT" .
2. Remove engine front undercover with power tool.
3. Remove radiator shroud (lower). Refer to CO-41, "
RADIATOR" .
4. Remove drive belts. Refer to EM-173, "
DRIVE BELTS" .
5. Remove fan coupling and cooling fan assembly. CAUTION:
Do not damage or scratch radiator core when removing.
6. Remove cooling fan from fan coupling.
INSPECTION AFTER REMOVAL
Fan Coupling
Inspect fan coupling for oil leakage and bimetal conditions.

If anything is found, replace fan coupling.
Cooling Fan
Inspect cooling fan for crack or unusual bend.

If anything is found, replace cooling fan.
INSTALLATION
Note the following, install in the reverse order of removal.

Install cooling fan with its front mark “F” facing front of vehicle. Refer to CO-49, "Removal and Installation
(Crankshaft Driven Type)" .
1. Cooling fan 2. Fan coupling 3. Fan pulley
4. Water pump
PBIC1537E
SLC072

WATER PUMP CO-51
[VK45DE]
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Revision: 2005 July 2005 FX
WAT E R P U MPPFP:21020
Removal and InstallationABS006JO
CAUTION:

When removing water pump, be careful not to get engine coolant on drive belts.

Water pump can not be disassembled and should be replaced as a unit.

After installing water pump, connect hose and clamp securely, then check for leaks using radiator
cap tester (commercial service tool) and radiator cap tester adapter [SST: EG17650301 (J33984-
A)].
REMOVAL
1. Drain engine coolant from drain plugs on radiator and both side of cylinder block. Refer to CO-37, "Chang-
ing Engine Coolant" and EM-246, "DISASSEMBLY" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
2. Remove following parts:

Engine front undercover

Air duct (inlet); Refer to EM-176, "AIR CLEANER AND AIR DUCT" .

Alternator, water pump and A/C compressor belt; Refer to EM-173, "DRIVE BELTS" .
3. Remove fan coupling with cooling fan, and then water pump pulley.
4. Remove water pump.

Engine coolant will leak from cylinder block, so have a receptacle ready under vehicle.
CAUTION:

Handle the water pump vane so that it does not contact any other parts.

Do not disassemble water pump.
1. Water pump pulley 2. Water pump 3. Gasket
PBIC1538E

THERMOSTAT AND WATER CONTROL VALVE CO-53
[VK45DE]
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Revision: 2005 July 2005 FX
THERMOSTAT AND WATER CONTROL VALVEPFP:21200
Removal and InstallationABS006JP
REMOVAL
1. Drain engine coolant from drain plugs on radiator and both side of cylinder block. Refer to CO-37, "Chang-
ing Engine Coolant" and EM-246, "DISASSEMBLY" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
2. Remove engine cover with power tool. Refer to EM-172, "
ENGINE ROOM COVER" .
3. Remove air duct (inlet). Refer to EM-176, "
AIR CLEANER AND AIR DUCT" .
4. Disconnect water suction hose from water inlet.
5. Remove water inlet and thermostat. CAUTION:
Do not disassemble thermostat.
6. Remove intake manifolds (upper and lower). Refer to EM-178, "
INTAKE MANIFOLD" .
1. Water connector 2. O-ring 3. Rubber ring
4. Heater hose 5. Water control valve 6. Water outlet
7. Gasket 8. O-ring 9. Water outlet pipe
10. Thermostat housing 11. Radiator cap 12. Radiator hose (upper)
13. Thermostat 14. Rubber ring 15. Water inlet
16. Water suction hose 17. Water suction pipe 18. Radiator hose (lower)
19. Gasket 20. O-ring 21. Heater pipe
22. Heater hose 23. Water hose 24. Water hose
PBIC1561E

EM-1
ENGINE MECHANICAL
B ENGINE
CONTENTS
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SECTION EM
A
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Revision: 2005 July 2005 FX
ENGINE MECHANICAL
VQ35DE
PRECAUTIONS .......................................................... 5
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect ..................................... ..... 5
OPERATION PROCEDURE ............................ ..... 5
Precautions for Drain Engine Coolant and Engine
Oil ........................................................................ ..... 5
Precautions for Disconnecting Fuel Piping ......... ..... 5
Precautions for Removal and Disassembly ........ ..... 5
Precautions for Inspection, Repair and Replace-
ment .................................................................... ..... 5
Precautions for Assembly and Installation .......... ..... 6
Precautions for Angle Tightening ........................ ..... 6
Precautions for Liquid Gasket ............................. ..... 6
REMOVAL OF LIQUID GASKET SEALING ..... ..... 6
LIQUID GASKET APPLICATION PROCEDURE ..... 6
PREPARATION ...................................................... ..... 8
Special Service Tools .......................................... ..... 8
Commercial Service Tools ................................... ... 10
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ... 13
NVH Troubleshooting — Engine Noise ............... ... 13
Use the Chart Below to Help You Find the Cause
of the Symptom. .................................................. ... 14
DRIVE BELTS ........................................................ ... 15
Checking Drive Belts ........................................... ... 15
Tension Adjustment ............................................. ... 15
ALTERNATOR AND POWER STEERING OIL
PUMP BELT ..................................................... ... 16
A/C COMPRESSOR BELT .............................. ... 16
Removal and Installation ..................................... ... 16
REMOVAL ........................................................ ... 16
INSTALLATION ................................................ ... 16
AIR CLEANER AND AIR DUCT ............................ ... 17
Components ........................................................ ... 17
Removal and Installation ..................................... ... 17
REMOVAL ........................................................ ... 17
INSPECTION AFTER REMOVAL .................... ... 17 INSTALLATION ................................................
... 18
Changing Air Cleaner Filter ................................. ... 18
INSPECTION ................................................... ... 18
REMOVAL ........................................................ ... 18
INSTALLATION ................................................ ... 18
INTAKE MANIFOLD COLLECTOR ....................... ... 19
Components ........................................................ ... 19
Removal and Installation ..................................... ... 19
REMOVAL ........................................................ ... 19
INSPECTION AFTER REMOVAL .................... ... 21
INSTALLATION ................................................ ... 22
INTAKE MANIFOLD .............................................. ... 24
Components ........................................................ ... 24
Removal and Installation ..................................... ... 24
REMOVAL ........................................................ ... 24
INSPECTION AFTER REMOVAL .................... ... 25
INSTALLATION ................................................ ... 25
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST ....................................................................... ... 26
Components ........................................................ ... 26
Removal and Installation ..................................... ... 26
REMOVAL ........................................................ ... 26
INSPECTION AFTER REMOVAL .................... ... 28
INSTALLATION ................................................ ... 28
OIL PAN AND OIL STRAINER .............................. ... 30
Components (2WD Model) .................................. ... 30
Removal and Installation (2WD Model) ............... ... 30
REMOVAL ........................................................ ... 30
INSPECTION AFTER REMOVAL .................... ... 32
INSTALLATION ................................................ ... 32
INSPECTION AFTER INSTALLATION ............. ... 35
Components (AWD Model) .................................. ... 35
Removal and Installation (AWD Model) ............... ... 36
REMOVAL ........................................................ ... 36
INSPECTION AFTER REMOVAL .................... ... 38
INSTALLATION ................................................ ... 38
INSPECTION AFTER INSTALLATION ............. ... 41

EM-3
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EM A
Revision: 2005 July 2005 FX
ANCE ...............................................................
. 146
MAIN BEARING OIL CLEARANCE ................. . 147
MAIN BEARING CRUSH HEIGHT ................... . 148
CONNECTING ROD BEARING CRUSH
HEIGHT ............................................................ . 148
MAIN BEARING CAP BOLT OUTER DIAMETER . 148
CONNECTING ROD BOLT OUTER DIAMETER . 149
DRIVE PLATE .................................................. . 149
OIL JET ............................................................ . 149
OIL JET RELIEF VALVE .................................. . 149
SERVICE DATA AND SPECIFICATIONS (SDS) ... . 150
Standard and Limit .............................................. . 150
GENERAL SPECIFICATIONS ......................... . 150
DRIVE BELT .................................................... . 151
INTAKE MANIFOLD COLLECTOR, INTAKE
MANIFOLD AND EXHAUST MANIFOLD ........ . 151
SPARK PLUG .................................................. . 151
CAMSHAFT AND CAMSHAFT BEARING ....... . 152
CYLINDER HEAD ............................................ . 154
CYLINDER BLOCK .......................................... . 157
PISTON, PISTON RING AND PISTON PIN ..... . 158
CONNECTING ROD ........................................ . 159
CRANKSHAFT ................................................. . 160
MAIN BEARING ............................................... . 161
CONNECTING ROD BEARING ....................... . 162
VK45DE
PRECAUTIONS ..................................................... . 163
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect ..................................... . 163
OPERATION PROCEDURE ............................ . 163
Precautions for Drain Engine Coolant and Engine
Oil ........................................................................ . 163
Precautions for Disconnecting Fuel Piping ......... . 163
Precautions for Removal and Disassembly ........ . 163
Precautions for Inspection, Repair and Replace-
ment .................................................................... . 163
Precautions for Assembly and Installation .......... . 163
Parts Requiring Angle Tightening ........................ . 164
Precautions for Liquid Gasket ............................. . 164
REMOVAL OF LIQUID GASKET SEALING ..... . 164
LIQUID GASKET APPLICATION PROCEDURE . 164
PREPARATION ...................................................... . 166
Special Service Tools .......................................... . 166
Commercial Service Tools ................................... . 168
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... . 170
NVH Troubleshooting — Engine Noise ............... . 170
Use the Chart Below to Help You Find the Cause
of the Symptom. .................................................. . 171
ENGINE ROOM COVER ....................................... . 172
Components ........................................................ . 172
Removal and Installation ..................................... . 172
REMOVAL ........................................................ . 172
INSTALLATION ................................................ . 172
DRIVE BELTS ........................................................ . 173
Components ........................................................ . 173 Checking Drive Belts ...........................................
.173
Tension Adjustment ............................................. .173
Removal and Installation ..................................... .173
REMOVAL ........................................................ .173
INSTALLATION ................................................ .174
Components ........................................................ .175
Drive Belt Auto Tensioner and Idler Pulley .......... .175
REMOVAL ........................................................ .175
INSTALLATION ................................................ .175
AIR CLEANER AND AIR DUCT ............................ .176
Components ........................................................ .176
Removal and Installation ..................................... .176
REMOVAL ........................................................ .176
INSPECTION AFTER REMOVAL .................... .177
INSTALLATION ................................................ .177
Changing Air Cleaner Filter ................................. .177
REMOVAL ........................................................ .177
INSTALLATION ................................................ .177
INTAKE MANIFOLD .............................................. .178
Components ........................................................ .178
Removal and Installation ..................................... .179
REMOVAL ........................................................ .179
INSPECTION AFTER REMOVAL .................... .180
INSTALLATION ................................................ .180
INSPECTION AFTER INSTALLATION ............. .181
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST ....................................................................... .182
Components ........................................................ .182
Removal and Installation ..................................... .182
REMOVAL ........................................................ .182
INSPECTION AFTER REMOVAL .................... .184
INSTALLATION ................................................ .184
OIL PAN AND OIL STRAINER .............................. .185
Components ........................................................ .185
Removal and Installation ..................................... .185
REMOVAL ........................................................ .185
INSPECTION AFTER REMOVAL .................... .187
INSTALLATION ................................................ .187
INSPECTION AFTER INSTALLATION ............. .188
IGNITION COIL ...................................................... .189
Components ........................................................ .189
Removal and Installation ..................................... .189
REMOVAL ........................................................ .189
INSTALLATION ................................................ .189
SPARK PLUG (PLATINUM-TIPPED TYPE) .......... .190
Components ........................................................ .190
Removal and Installation ..................................... .190
REMOVAL ........................................................ .190
INSPECTION AFTER REMOVAL .................... .190
INSTALLATION ................................................ .191
FUEL INJECTOR AND FUEL TUBE ..................... .192
Components ........................................................ .192
Removal and Installation ..................................... .192
REMOVAL ........................................................ .192
INSTALLATION ................................................ .194
INSPECTION AFTER INSTALLATION ............. .196

EM-4Revision: 2005 July 2005 FX
ROCKER COVER ..................................................
.197
Components ........................................................ .197
Removal and Installation ..................................... .197
REMOVAL ........................................................ .197
INSTALLATION ................................................. .199
TIMING CHAIN ....................................................... .200
Components ........................................................ .200
Removal and Installation ..................................... .201
REMOVAL ........................................................ .201
INSPECTION AFTER REMOVAL ..................... .205
INSTALLATION ................................................. .205
INSPECTION AFTER INSTALLATION ............. .211
CAMSHAFT ............................................................ .212
Components ........................................................ .212
Removal and Installation ..................................... .212
REMOVAL ........................................................ .212
INSPECTION AFTER REMOVAL ..................... .213
INSTALLATION ................................................. .216
INSPECTION AFTER INSTALLATION ............. .218
Valve Clearance ................................................... .219
INSPECTION .................................................... .219
ADJUSTMENT ................................................. .222
OIL SEAL ............................................................... .225
Removal and Installation of Valve Oil Seal .......... .225
REMOVAL ........................................................ .225
INSTALLATION ................................................. .225
Removal and Installation of Front Oil Seal .......... .226
REMOVAL ........................................................ .226
INSTALLATION ................................................. .226
Removal and Installation of Rear Oil Seal ........... .227
REMOVAL ........................................................ .227
INSTALLATION ................................................. .227
CYLINDER HEAD .................................................. .229
On-Vehicle Service .............................................. .229
CHECKING COMPRESSION PRESSURE ...... .229
Components ........................................................ .230
Removal and Installation ..................................... .230
REMOVAL ........................................................ .230
INSPECTION AFTER REMOVAL ..................... .231
INSTALLATION ................................................. .231
Disassembly and Assembly ................................. .233
COMPONENTS ................................................ .233
DISASSEMBLY ................................................ .233
ASSEMBLY ...................................................... .234
Inspection After Disassembly .............................. .235
VALVE DIMENSIONS ....................................... .235
VALVE GUIDE CLEARANCE ........................... .236
VALVE GUIDE REPLACEMENT ...................... .236
VALVE SEAT CONTACT .................................. .238
VALVE SEAT REPLACEMENT ........................ .238
VALVE SPRING SQUARENESS ...................... .239
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD ............................ .239 ENGINE ASSEMBLY ..............................................
.240
Components ......................................................... .240
Removal and Installation ...................................... .240
REMOVAL ......................................................... .240
INSTALLATION ................................................. .243
INSPECTION AFTER INSTALLATION ............. .243
CYLINDER BLOCK ................................................ .245
Components ......................................................... .245
Disassembly and Assembly ................................. .246
DISASSEMBLY ................................................. .246
ASSEMBLY ....................................................... .249
How to Select Piston and Bearing ....................... .255
DESCRIPTION ................................................. .255
HOW TO SELECT PISTON .............................. .255
HOW TO SELECT CONNECTING ROD BEAR-
ING .................................................................... .256
HOW TO SELECT MAIN BEARING ................. .257
Inspection After Disassembly ............................... .262
CRANKSHAFT END PLAY ............................... .262
CONNECTING ROD SIDE CLEARANCE ........ .262
PISTON TO PISTON PIN OIL CLEARANCE .... .262
PISTON RING SIDE CLEARANCE .................. .263
PISTON RING END GAP ................................. .263
CONNECTING ROD BEND AND TORSION .... .264
CONNECTING ROD BIG END DIAMETER ..... .264
CONNECTING ROD BUSHING OIL CLEAR-
ANCE ................................................................ .264
CYLINDER BLOCK DISTORTION ................... .265
MAIN BEARING HOUSING INNER DIAMETER .266
PISTON TO CYLINDER BORE CLEARANCE . .266
CRANKSHAFT MAIN JOURNAL DIAMETER .. .267
CRANKSHAFT PIN JOURNAL DIAMETER ..... .268
CRANKSHAFT OUT-OF-ROUND AND TAPER .268
CRANKSHAFT RUNOUT ................................. .268
CONNECTING ROD BEARING OIL CLEAR-
ANCE ................................................................ .269
MAIN BEARING OIL CLEARANCE .................. .270
CRUSH HEIGHT OF MAIN BEARING ............. .271
CRUSH HEIGHT OF CONNECTING ROD
BEARING .......................................................... .271
DRIVE PLATE ................................................... .271
SERVICE DATA AND SPECIFICATIONS (SDS) ... .272
Standard and Limit ............................................... .272
GENERAL SPECIFICATIONS .......................... .272
DRIVE BELTS ................................................... .272
INTAKE MANIFOLD AND EXHAUST MANI-
FOLD ................................................................ .272
SPARK PLUG ................................................... .273
CAMSHAFT AND CAMSHAFT BEARING ........ .273
CYLINDER HEAD ............................................. .275
CYLINDER BLOCK ........................................... .278
PISTON, PISTON RING AND PISTON PIN ..... .279
CONNECTING ROD ......................................... .280
CRANKSHAFT .................................................. .281
MAIN BEARING ................................................ .283
CONNECTING ROD BEARING ........................ .284

EM-14
[VQ35DE]
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: 2005 July 2005 FX
Use the Chart Below to Help You Find the Cause of the Symptom.ABS004TW
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of the engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not related Location
of noise Type of
noise Operating condition of engine
Source of noise Check item Refer-
ence page
Before
warm- up After
warm- up When
start- ing When
idling When
racing While
driving
Top of
engine
Rocker
cover
Cylinder
head Ticking or
clicking CA—AB— Tappet
noise Valve clearance
EM-93
Rattle C A — A B C Camshaft
bearing
noise Camshaft runout
Camshaft journal oil
clearance EM-86EM-86
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil pan Slap or
knock —A—B B— Piston pin
noise Piston to piston pin oil
clearance
Connecting rod bush-
ing oil clearance EM-140
EM-142
Slap or
rap A——B B A Piston
slap noise Piston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsion EM-144EM-141
EM-141
EM-142
Knock A B C B B B
Connect-
ing rod
bearing
noise Connecting rod bush-
ing oil clearance
Connecting rod bear-
ing oil clearance EM-142EM-146
Knock A B — A B C
Main
bearing
noise Main bearing oil clear-
ance
Crankshaft runout EM-147
EM-146
Front of
engine
Timing
chain
case Tapping or
ticking AA—BBB Timing
chain and
timing
chain ten-
sioner
noise Timing chain cracks
and wear
Timing chain tensioner
operation EM-72
EM-64
Front of
engine Squeak-
ing or fizz-
ing AB—B—C Drive belts
(Sticking
or slip-
ping) Drive belts deflection
EM-15
CreakingABABAB Drive belts
(Slipping) Idler pulley bearing
operation
Squall
Creak AB—BAB Water
pump
noise Water pump operation CO-22,
"WATER
PUMP"