engine INFINITI FX35 2007 Service Manual

ENGINE ASSEMBLY EM-117
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Revision: 2006 July 2007 FX35/FX45

When installing engine mounting bracket (RH and LH) on cylin-
der block, tighten two upper bolts (shown as “A” in the figure)
first. Then tighten two lower bolts (shown as “B” in the figure).

Make sure all engine mounting insulators are seated properly, then tighten mounting nuts.

Tighten rear engine mounting member bolts in numerical order
as shown in the figure.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc.
PBIC2062E
PBIC3040E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

EM-118
[VQ35DE]
ENGINE ASSEMBLY
Revision: 2006 July 2007 FX35/FX45
Components (AWD Models)NBS003H3
Removal and Installation (AWD Models)NBS003H4
WARNING:

Situate the vehicle on a flat and solid surface.

Place chocks at front and back of rear wheels.

For engines not equipped with engine slingers, attach proper slingers and bolts described in
PARTS CATALOG.
CAUTION:

Always be careful to work safely, avoid forceful or uninstructed operations.

Do not start working until exhaust system and engine coolant are cool enough.

If items or work required are not covered by the engine section, refer to the applicable sections.

Always use the support point specified for lifting.

Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for
unavoidable reasons, support at rear axle jacking point with transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.

For supporting points for lifting and jacking point at rear axle, refer to GI-41, "Garage Jack and
Safety Stand" .
1. Engine mounting bracket (RH) 2. Engine mounting bracket (RH)
(Lower) 3. Dynamic damper
4. Washer 5. Engine mounting insulator (RH) 6. Engine mounting insulator (LH)
7. Engine mounting bracket (LH) 8. Harness bracket 9. Heat insulator
10. Caller 11. Rubber bush 12. Rear engine mounting member
13. Engine mounting insulator (rear) 14. Dynamic damper
PBIC3041E

ENGINE ASSEMBLY EM-119
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Revision: 2006 July 2007 FX35/FX45
REMOVAL
Outline
At first, remove the engine, the transmission assembly, the transfer assembly and the front final drive assem-
bly with front suspension member downward. Then separate the engine, the transmission assembly, the trans-
fer and the front final drive assembly.
Preparation
1. Release fuel pressure. Refer to EC-85, "FUEL PRESSURE RELEASE" .
2. Drain engine coolant from radiator. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
3. Disconnect both battery terminals. Refer to SC-5, "
BATTERY" .
4. Remove the following parts:

Engine cover; Refer to EM-19, "INTAKE MANIFOLD COLLECTOR" .

Front road wheel and tires

Front and rear engine undercover

Front cross bar; Refer to FSU-17, "FRONT SUSPENSION MEMBER" .

Cowl top cover (right); Refer to EI-23, "COWL TOP" .

Air duct and air cleaner case assembly; EM-17, "AIR CLEANER AND AIR DUCT" .
5. Discharge refrigerant from A/C circuit. Refer to ATC-137, "
REFRIGERANT LINES" .
6. Remove radiator hoses (upper and lower). Refer to CO-14, "
RADIATOR" .
Engine Room
1. Disconnect heater hose from vehicle-side, and fit a plug onto hose end to prevent engine coolant leak.
2. Disconnect grounding cable (between vehicle to left bank cylinder head).
3. Disconnect battery positive cable harness at vehicle side and temporarily fasten it on engine.
4. Disconnect A/C piping from A/C compressor, and temporarily fasten it on vehicle with a rope. Refer to ATC-137, "
REFRIGERANT LINES" .
5. Disconnect engine room harness connectors shown in the fig- ure.
6. Disconnect two body ground cables.
7. Disconnect brake booster vacuum hose.
8. Disconnect fuel feed hose (with damper) and EVAP hose. Refer to EM-45, "
FUEL INJECTOR AND FUEL
TUBE"
CAUTION:
Fit plugs onto disconnected hoses to prevent fuel leak.
9. Remove reservoir tank of power steering oil pump and piping from vehicle, and temporarily secure them on engine. Refer to PS-30, "
POWER STEERING OIL PUMP" .
CAUTION:
When temporarily securing, keep the reservoir tank upright to avoid a fluid leak.
Passenger Room Side
Follow procedure below to disconnect engine room harness connectors at passenger room side, and tempo-
rarily secure them on engine.
SBIA0472E

EM-120
[VQ35DE]
ENGINE ASSEMBLY
Revision: 2006 July 2007 FX35/FX45
1. Remove passenger-side kicking plate, dash side finisher, and glove box. Refer to EI-38, "BODY SIDE
TRIM" and IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Disconnect engine room harness connectors at unit sides TCM, ECM and other.
3. Disengage intermediate fixing point. Pull out engine room harnesses to engine room side, and temporarily secure them on engine.
CAUTION:

When pulling out harnesses, take care not to damage harnesses and connectors.

After temporarily securing, cover connectors with vinyl or similar material to protect against for-
eign material adhesion.
Vehicle Underbody
1. Remove A/T fluid cooler hoses and power steering oil pump oil cooler hoses.

Install plug to avoid leakage of A/T fluid and power steering fluid.
2. Remove exhaust front tube and center muffler. Refer to EX-3, "
EXHAUST SYSTEM" .
3. Disconnect steering lower joint at power steering gear assembly side, and release steering lower shaft. Refer to PS-13, "
STEERING COLUMN" .
4. Remove tunnel stay. Refer to RSU-5, "
REAR SUSPENSION ASSEMBLY" .
5. Remove rear propeller shaft. Refer to PR-7, "
REAR PROPELLER SHAFT" .
6. Remove front drive shaft (both side). Refer to FAX-12, "
FRONT DRIVE SHAFT" .
7. Disconnect harness connector from transmission assembly and transfer assembly.
8. Disengage A/T control rod at control device assembly side. Then, temporarily secure it on the transmis- sion assembly, so that it does not sag. Refer to AT- 2 2 9 , "
SHIFT CONTROL SYSTEM" .
9. Remove rear plate from oil pan (upper). Then remove bolts fixing drive plate to torque converter. Refer to EM-30, "
OIL PAN AND OIL STRAINER" and AT- 2 6 6 , "TRANSMISSION ASSEMBLY" .
10. Remove bolts fixing the transmission assembly to lower rear side of oil pan (upper). Refer to AT- 2 6 6 ,
"TRANSMISSION ASSEMBLY" .
11. Remove front stabilizer. Refer to FSU-16, "
STABILIZER BAR" .
12. Separate steering outer sockets from steering knuckle. Refer to PS-18, "
POWER STEERING GEAR AND
LINKAGE" .
13. Separate transverse links from suspension member and vehicle body. Refer to FSU-14, "
TRANSVERSE
LINK" .
Removal Work
1. Use a manual lift table caddy (commercial service tool) or equiv-
alently rigid tool such as a transmission jack. Securely support
bottom of suspension member and transmission.
CAUTION:
Put a piece of wood or something similar as the supporting
surface, secure a completely stable condition.
2. Remove rear engine mounting member bolts.
SBIA0473E
PBIC0804E

ENGINE ASSEMBLY EM-121
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Revision: 2006 July 2007 FX35/FX45
3. Remove front suspension member mounting nuts. Refer to FSU-6, "FRONT SUSPENSION ASSEMBLY" .
4. Carefully lower jack, or raise lift to remove the engine, transmission assembly, transfer, front final drive assembly and front suspension member. When performing work, observe the following caution:
CAUTION:

Confirm there is no interference with the vehicle.

Make sure that all connection points have been disconnected.

Keep in mind the center of the vehicle gravity changes. If necessary, use jack(s) to support the
vehicle at rear jacking point(s) to prevent it from falling it off the lift.
Separation Work
1. Install engine slingers into front of cylinder head (right bank) and
rear of cylinder head (left bank).

To protect rocker cover against damage caused by tilting of
engine slinger, insert spacer between cylinder head and
engine rear lower slinger, in direction shown in the figure.
NOTE:
Spacer is a component part of engine rear upper slinger
assembly.
2. Remove power steering oil pump from engine side. Refer to PS-30, "
POWER STEERING OIL PUMP" .
3. Remove engine mounting insulators (RH and LH) under side nuts with power tool.
4. Lift with hoist and separate the engine, the transmission assembly, the transfer assembly and the front final drive assembly from front suspension member.
CAUTION:

Before and during this lifting, always check if any harnesses are left connected.

Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
5. Remove alternator. Refer to SC-24, "
CHARGING SYSTEM" .
6. Remove starter motor. Refer to SC-11, "
STARTING SYSTEM" .
7. Remove front propeller shaft from the front final drive assembly side. Refer to PR-4, "
FRONT PROPEL-
LER SHAFT" .
8. Separate the engine from the transmission assembly. Refer to AT- 2 6 6 , "
TRANSMISSION ASSEMBLY" .
9. Remove the front final drive assembly from oil pan (upper). Refer to FFD-13, "
FRONT FINAL DRIVE
ASSEMBLY" .
10. Remove each engine mounting insulator and each engine mounting bracket from the engine with power tool.
11. Remove rear engine mounting member and engine mounting insulator (rear) from the transmission assembly.
12. Remove dynamic damper from the transfer assembly.
INSTALLATION
Note the following, and install in the reverse order of removal. Slinger bolts:
: 28.0 N·m (2.9 kg-m, 21 ft-lb)
PBIC2061E
KBIA1017E

EM-122
[VQ35DE]
ENGINE ASSEMBLY
Revision: 2006 July 2007 FX35/FX45

Do not allow engine mounting insulator to be damage and careful no engine oil gets on it.

For a location with a positioning pin, insert it securely into hole of mating part.

For a part with a specified installation orientation, refer to component figure in EM-118, "Components
(AWD Models)" .

When installing engine mounting bracket (RH and LH) on cylin-
der block, tighten two upper bolts (shown as “A” in the figure)
first. Then tighten two lower bolts (shown as “B” in the figure).

Install engine mounting bracket (RH) (lower) as follows:
–Temporarily tighten mounting bolts (shown as “C”, “D” and “E” in
the figure).
–Tighten mounting bolts to the specified torque with following
mounting surfaces touched.
 Engine mounting bracket (RH) to engine mounting bracket (RH) (lower) (shown as “C” and “D” in figure).
 Front final drive to engine mounting bracket (RH) (lower) (shown as “E” in figure).

Make sure all engine mounting insulators are seated properly,
then tighten mounting nuts.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc.
PBIC3042E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

EM-124
[VQ35DE]
CYLINDER BLOCK
Revision: 2006 July 2007 FX35/FX45

Refer to GI-11, "Components" for symbol marks in the figure.
Disassembly and AssemblyNBS003H6
DISASSEMBLY
1. Remove the engine assembly from the vehicle, and separate transmission assembly, transfer assembly
(AWD models), front final drive assembly (AWD models) and front suspension member from the engine.
Refer to EM-113, "
ENGINE ASSEMBLY" .
2. Remove exhaust manifold. Refer to EM-26, "
EXHAUST MANIFOLD AND THREE WAY CATALYST" .
1. Reinforcement plate 2. Drive plate 3. Rear oil seal retainer
4. Cover 5. Gasket 6. Cylinder block
7. Knock sensor 8. Oil jet 9. Thrust bearing
10. Pilot converter 11. Main bearing 12. Crankshaft
13. Crankshaft key 14. Main bearing cap 15. Main bearing cap bolt
16. Main bearing beam 17. Baffle plate (2WD models) 18. Connecting rod bolt
19. Connecting rod bearing cap 20. Connecting rod bearing 21. Connecting rod
22. Snap ring 23. Piston pin 24. Piston
25. Oil ring 26. Second ring 27. Top ring
A. Refer to EM-129
B. Crankshaft side C. Chamfered
1. Cylinder block 2. Gasket 3. Water connector
4. Gasket 5. Cylinder block heater 6. Connector protector cap
PBIC2614E

CYLINDER BLOCK EM-125
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Revision: 2006 July 2007 FX35/FX45
3. Install engine sub-attachment with engine stand shaft (SST) to
right side of cylinder block.

Use a spacer to the engine rear side.
4. Lift the engine, and mount it onto engine stand (SST).

A widely use engine stand can be used.
CAUTION:
Use an engine stand that has a load capacity [approxi-
mately 220 kg (485 lb) or more] large enough for support-
ing the engine weight.
NOTE:
This example is an engine stand for holding at transmission
mounting side with drive plate removed.
5. Drain engine oil. Refer to LU-9, "
Changing Engine Oil" .
SBIA0503E
PBIC2685E
PBIC0085E

EM-126
[VQ35DE]
CYLINDER BLOCK
Revision: 2006 July 2007 FX35/FX45
6. Drain engine coolant by removing water drain plugs from cylin-
der block both sides at “B” and “C” and cylinder block front side
at “A” as shown in the figure.
7. Remove drive plate with power tool. Fix crankshaft with a ring gear stopper [SST: KV1011770 (J44716)], and remove mounting bolts.

Loosen mounting bolts in diagonal order.
CAUTION:

Do not disassemble drive plate.

Never place drive plate with signal plate facing down.

When handling signal plate, take care not to damage or
scratch it.

Handle signal plate in a manner that prevents it from
becoming magnetized.
8. Remove the following parts:

Intake manifold collector: Refer to EM-19, "INTAKE MANIFOLD COLLECTOR" .

Intake manifold: Refer to EM-24, "INTAKE MANIFOLD" .

Oil pans (lower and upper): Refer to EM-30, "OIL PAN AND OIL STRAINER" .

Front and rear timing chain case: Refer to EM-64, "TIMING CHAIN" .

Cylinder head: Refer to EM-101, "CYLINDER HEAD" .
9. Remove knock sensor.
CAUTION:
Carefully handle sensor avoiding shocks.
PBIC2610E
SEM760G

CYLINDER BLOCK EM-129
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Revision: 2006 July 2007 FX35/FX45
18. Remove main bearing beam.
19. Remove main bearing caps.
CAUTION:
Be careful not to drop main bearing, and to scratch the sur-
face.

Using main bearing cap bolts, remove main bearing cap while
shaking it back-and-forth.
20. Remove crankshaft.
21. Remove main bearings and thrust bearings from cylinder block and main bearing caps. CAUTION:

Be careful not to drop main bearing, and to scratch the surface.

Identify installation positions, and store them without mixing them up.
22. Remove oil jet.
ASSEMBLY
1. Fully air-blow engine coolant and engine oil passages in cylinder block, cylinder bore and crankcase to remove any foreign material.
CAUTION:
Use a goggles to protect your eye.
2. Install each plug to cylinder block as shown in the figure.

Apply sealant to the thread of water drain plugs “A”, “B” and
“C”.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .

Apply sealant to the thread of plugs “D” and “E”.
Use Genuine High Strength Thread Locking Sealant or
equivalent. Refer to GI-48, "
RECOMMENDED CHEMICAL
PRODUCTS AND SEALANTS" .

Apply sealant to the thread of plug “F”.
Use Anaerobic Liquid Gasket or equivalent. Refer to GI-
48, "RECOMMENDED CHEMICAL PRODUCTS AND SEAL-
ANTS" .
NOTE:
For Canada, “F” in the figure is not plug but block heater.
Refer to EM-123, "
Components" .

Replace washers with new one.
PBIC0881E
EMQ0195D
PBIC2610E