Infiniti FX35 / FX45. Manual — part 621
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ENGINE
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SECTION
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CONTENTS
ENGINE MECHANICAL
VQ35DE
SERVICE INFORMATION . . . . . . .
PRECAUTIONS . . . . . . . . . . . . ...
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect . . . . . . . . .....
Precaution for Drain Engine Coolant and Engine
Oil . . . . . . . . . . . . . . . . . . . ..
Precaution for Disconnecting Fuel Piping . . . .....
Precaution for Removal and Disassembly . . . ....
Precaution for Inspection, Repair and Replace-
ment . . . . . . . . . . . . . . . . . . ..
Precaution for Assembly and Installation . . . . ..
Precaution for Angle Tightening . . . . . . . ....
Precaution for Liquid Gasket . . . . . . . . .....
PREPARATION . . . . . . . . . . . . ...
Special Service Tool . . . . . . . . . . . .....
Commercial Service Tool . . . . . . . . . . ..
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING . . . . . . .
NVH Troubleshooting - Engine Noise . . . . . .
Use the Chart Below to Help You Find the Cause
of the Symptom . . . . . . . . . . . . . ...
DRIVE BELTS . . . . . . . . . . . . .
Checking Drive Belts . . . . . . . . . . . ...
Tension Adjustment . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
AIR CLEANER AND AIR DUCT . . . . . .
Component . . . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . .
Changing Air Cleaner Filter . . . . . . . . . .
INTAKE MANIFOLD COLLECTOR . . . . ...
Component . . . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . .
INTAKE MANIFOLD . . . . . . . . . . ...
Component . . . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . .
EXHAUST MANIFOLD AND THREE WAY
CATALYST . . . . . . . . . . . . . .
Component . . . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . .
OIL PAN AND OIL STRAINER . . . . . . .
Component (2WD Models) . . . . . . . . . ..
Removal and Installation (2WD Models) . . . . .
Component (AWD Models) . . . . . . . . . ..
Removal and Installation (AWD Models) . . . . .
IGNITION COIL . . . . . . . . . . . . .
Component . . . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . .
SPARK PLUG (PLATINUM-TIPPED TYPE) . .
Component . . . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . .
FUEL INJECTOR AND FUEL TUBE . . . .
Component . . . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . .
ROCKER COVER . . . . . . . . . . . .
Component . . . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . .
FRONT TIMING CHAIN CASE . . . . . . .
Removal and Installation . . . . . . . . . . .
TIMING CHAIN . . . . . . . . . . . . ..
Component . . . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . .
CAMSHAFT . . . . . . . . . . . . . ...
Component . . . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . .
Valve Clearance . . . . . . . . . . . . . ..
EM-2
Removal and Installation of Valve Oil Seal . . . .
Removal and Installation of Front Oil Seal . . . .
Removal and Installation of Rear Oil Seal . . . ..
CYLINDER HEAD . . . . . . . . . . .
On-Vehicle Service . . . . . . . . . . . .
Component . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . ...
Disassembly and Assembly . . . . . . . . ...
Inspection After Disassembly . . . . . . . .
ENGINE ASSEMBLY . . . . . . . . . ...
Component (2WD Models) . . . . . . . . .
Removal and Installation (2WD Models) . . . ...
Component (AWD Models) . . . . . . . . .
Removal and Installation (AWD Models) . . . ...
CYLINDER BLOCK . . . . . . . . . . .
Component . . . . . . . . . . . . . . .
Disassembly and Assembly . . . . . . . . ...
How to Select Piston and Bearing . . . . . . .
Inspection After Disassembly . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . .
Standard and Limit . . . . . . . . . . . .
VK45DE
SERVICE INFORMATION . . . . . . ..
PRECAUTIONS . . . . . . . . . . . ...
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect . . . . . . . . .
Precaution for Drain Engine Coolant and Engine
Oil . . . . . . . . . . . . . . . . . . ..
Precaution for Disconnecting Fuel Piping . . . ..
Precaution for Removal and Disassembly . . . .
Precaution for Inspection, Repair and Replace-
ment . . . . . . . . . . . . . . . . . ...
Precaution for Assembly and Installation . . . ..
Parts Requiring Angle Tightening . . . . . . ..
Precaution for Liquid Gasket . . . . . . . . .
PREPARATION . . . . . . . . . . . ...
Special Service Tool . . . . . . . . . . . ..
Commercial Service Tool . . . . . . . . . ..
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING . . . . . . ..
NVH Troubleshooting - Engine Noise . . . . .
Use the Chart Below to Help You Find the Cause
of the Symptom . . . . . . . . . . . . . .
ENGINE ROOM COVER . . . . . . . . ..
Component . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . ...
DRIVE BELTS . . . . . . . . . . . . ..
Component . . . . . . . . . . . . . . .
Checking Drive Belts . . . . . . . . . . . .
Tension Adjustment . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
Component . . . . . . . . . . . . . . ...
Drive Belt Auto Tensioner and Idler Pulley . . ...
AIR CLEANER AND AIR DUCT . . . . . ...
Component . . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
Changing Air Cleaner Filter . . . . . . . . ...
INTAKE MANIFOLD . . . . . . . . . . .
Component . . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
EXHAUST MANIFOLD AND THREE WAY
CATALYST . . . . . . . . . . . . . ...
Component . . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
OIL PAN AND OIL STRAINER . . . . . .
Component . . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
IGNITION COIL . . . . . . . . . . . . .
Component . . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
SPARK PLUG (PLATINUM-TIPPED TYPE) .
Component . . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
FUEL INJECTOR AND FUEL TUBE . . . .
Component . . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
ROCKER COVER . . . . . . . . . . . .
Component . . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
TIMING CHAIN . . . . . . . . . . . . .
Component . . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
CAMSHAFT . . . . . . . . . . . . . ..
Component . . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
Valve Clearance . . . . . . . . . . . . .
OIL SEAL . . . . . . . . . . . . . . ..
Removal and Installation of Valve Oil Seal . . ...
Removal and Installation of Front Oil Seal . . .
Removal and Installation of Rear Oil Seal . . .
CYLINDER HEAD . . . . . . . . . . . .
On-Vehicle Service . . . . . . . . . . . ...
Component . . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
Disassembly and Assembly . . . . . . . . ..
Inspection After Disassembly . . . . . . . .
ENGINE ASSEMBLY . . . . . . . . . ...
Component . . . . . . . . . . . . . . ...
EM-3
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CYLINDER BLOCK . . . . . . . . . . ..
Component . . . . . . . . . . . . . . .
Disassembly and Assembly . . . . . . . . ..
How to Select Piston and Bearing . . . . . . .
Inspection After Disassembly . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . ...
EM-4
< SERVICE INFORMATION >
[VQ35DE]
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000001524592
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″
LOCK
″
position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1.
Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2.
Use the Intelligent Key or mechanical key to turn the ignition switch to the
″
ACC
″
position. At this time, the
steering lock will be released.
3.
Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4.
Perform the necessary repair operation.
5.
When the repair work is completed, return the ignition switch to the
″
LOCK
″
position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6.
Perform a self-diagnosis check of all control units using CONSULT-III.
Precaution for Drain Engine Coolant and Engine Oil
INFOID:0000000001325693
Drain engine coolant and engine oil when the engine is cooled.
Precaution for Disconnecting Fuel Piping
INFOID:0000000001325694
• Before starting work, make sure no fire or spark producing items are in the work area.
• Release fuel pressure before disconnecting and disassembly.
• After disconnecting pipes, plug openings to stop fuel leakage.
Precaution for Removal and Disassembly
INFOID:0000000001325695
• When instructed to use SST, use specified tools. Always be careful to work safely, avoid forceful or unin-
structed operations.
• Exercise maximum care to avoid damage to mating or sliding surfaces.
• Cover openings of engine system with a tape or equivalent, if necessary, to seal out foreign materials.
• Mark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.
• When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be used
in the step.
Precaution for Inspection, Repair and Replacement
INFOID:0000000001325696
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
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