installation INFINITI FX35 2008 Service Manual

CYLINDER HEADEM-103
< SERVICE INFORMATION > [VQ35DE]
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2. At each of several locations on bottom surface of cylinder head,
measure the distortion in six directions.
 If it exceeds the limit, replace cylinder head.
INSTALLATION
1. Install new cylinder head gaskets.
2. Turn crankshaft until No. 1 piston is set at TDC. Crankshaft key should line up with the right bank cylinder cen-
ter line as shown in the figure.
3. Install cylinder head follow the steps below to tighten cylinder head bolts in numerical order as shown in the figure with cylin-
der head bolts wrench (commercial service tool).
CAUTION:
If cylinder head bolts re-used, check their outer diameters
before installation. Refer to "Cylinder Head Bolts Outer
Diameter".
a. Apply new engine oil to threads and seat surfaces of cylinder head bolts.
b. Tighten all cylinder head bolts.
c. Completely loosen all cylinder head bolts.
CAUTION:
In step “c”, loosen bolts in reverse order of that indicated in
the figure.
d. Tighten all cylinder head bolts. Limit : 0.1 mm (0.004 in)
SEM861E
SEM532G
: 98.1 N·m (10 kg-m, 72 ft-lb)
: 0 N·m (0 kg-m, 0 ft-lb)
: 39.2 N·m (4.0 kg-m, 29 ft-lb)
PBIC2057E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-104
< SERVICE INFORMATION >[VQ35DE]
CYLINDER HEAD
e. Turn all cylinder head bolts 90 degrees clockwise (angle tighten-
ing).
CAUTION:
Check the tightening angle by using the angle wrench
(SST). Avoid judgment by vi sual inspection without SST.
 Check tightening angle indicated on the angle wrench indica-
tor plate.
f. Turn all cylinder head bolts 90 degrees clockwise again (angle tightening).
4. After installing cylinder head, measure distance between front end faces of cylinder block and cylinder head (left and right
banks).
 If measured value is out of the standard, re-install cylinderhead.
5. Install in the reverse order of removal after this step.
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 incl uding engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-9, "
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 leak-
age at connection points.
- Start engine. With engine speed increased, che ck 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 leak age of fuel, exhaust gases, or any oil/fluids includ-
ing engine oil and engine coolant.
 Bleed air from lines and hoses of applic able 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.
PBIC0888E
Standard : 14.1 - 14.9 mm (0.555 - 0.587 in)
EMQ0662D
Items 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 —
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER HEADEM-105
< SERVICE INFORMATION > [VQ35DE]
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Disassembly and AssemblyINFOID:0000000001325740
DISASSEMBLY
1. Remove spark plug with spark plug wrench (commercial service tool).
2. Remove valve lifter.
 Identify installation positions, and store them without mixing them up.
3. Remove valve collet.  Compress valve spring with the valve spring compressor, theattachment and the adapter (SST). Remove valve collet with a
magnet hand.
CAUTION:
When working, take care not to damage valve lifter holes.
4. Remove valve spring retainer, valve spring and valve spring seat.
5. Push valve stem to combustion chamber side, and remove valve.  Identify installation positions, and store them without mixing them up.
1. Valve lifter 2. Valve collet 3. Valve spring retainer
4. Valve spring 5. Valve oil seal 6. Valve spring seat
7. Valve guide 8. Spark plug 9. Spark plug tube
10. Cylinder head (right bank) 11. Valve seat 12. Valve (EXH)
13. Valve (INT) 14. Cylinder head (left bank)
PBIC2637E
PBIC1803E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER HEADEM-111
< SERVICE INFORMATION > [VQ35DE]
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 Check the valve spring pressure at specified spring height.
 If the installation load or load with valve open is out of the standard, replace valve spring. Standard:
Intake and exhaust Free height: 47.07 mm (1.8531 in)
Installation height
: 37.0 mm (1.457 in)
Installation load : 166 - 188 N (16.9 - 19.2 kg, 37 - 42 lb)
Height during valve open : 27.2 mm (1.071 in)
Load with valve open : 373 - 421 N (38.0 - 42.9 kg, 84 - 95 lb)
SEM113
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-112
< SERVICE INFORMATION >[VQ35DE]
ENGINE ASSEMBLY
ENGINE ASSEMBLY
Component (2WD Models)INFOID:0000000001325742
Removal and Installation (2WD Models)INFOID:0000000001325743
WARNING:
 Situate the vehicle on a flat and solid surface.
 Place chocks at front and back of rear wheels.
 For engines not equipped with en
gine 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 no t covered by the engine section, refer to the applicable sections.
 Always use the support poin t specified for lifting.
 Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for unavoid-
able 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-37, "
Garage Jack and
Safety Stand".
REMOVAL
Outline
1. Engine mounting bracket (RH) 2. Heat insulator (RH) 3. Engine mounting insulator (RH)
4. Engine mounting insulator (LH) 5. Heat insulator (LH) 6. Engine mounting bracket (LH)
7. Harness bracket 8. Engine mounting insulator (rear) 9. Rear engine mounting member
PBIC3039E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

ENGINE ASSEMBLYEM-113
< SERVICE INFORMATION > [VQ35DE]
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At first, remove the engine and the transmission asse
mbly with front suspension member downward. Then
separate the engine from transmission.
Preparation
1. Release fuel pressure. Refer to EC-87, "Fuel Pressure Check".
2. Drain engine coolant from radiator. Refer to CO-10, "
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-4, "
How to Handle Battery".
4. Remove the following parts:  Engine cover: Refer to EM-19, "
Component".
 Front road wheel and tires
 Front and rear engine undercover
 Front cross bar: Refer to FSU-16, "
Removal and Installation".
 Cowl top cover (right): Refer to EI-23, "
Component Parts Location".
 Air duct and air cleaner case assembly: EM-17, "
Component".
5. Discharge refrigerant from A/C circuit. Refer to ATC-120, "
HFC-134a (R-134a) Service Procedure".
6. Remove radiator hoses (upper and lower). Refer to CO-13, "
Component".
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 v ehicle side and temporarily fasten it on engine.
4. Disconnect A/C piping from A/C compressor, and tem porarily fasten it on vehicle with a rope. Refer to
ATC-120, "
HFC-134a (R-134a) Service Procedure".
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, "
Component".
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-27, "
On-Vehicle Inspection and Service".
CAUTION:
When temporarily securing, keep the reservo ir tank upright to avoid a fluid leak.
Passenger Room Side
Follow procedure below to disconnect engine room harne ss connectors at passenger room side, and tempo-
rarily secure them on engine.
1. Remove passenger-side kicking plate, dash side finisher, and glove box. Refer to EI-38, "
Component
Parts Location" and IP-10, "Component Parts Location".
SBIA0472E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-114
< SERVICE INFORMATION >[VQ35DE]
ENGINE ASSEMBLY
2. Disconnect engine room harness connectors at unit sides TCM,
ECM and other.
3. Disengage intermediate fixing point. Pull out engine r oom 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 vi nyl 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, "
Checking Exhaust System".
3. Disconnect steering lower joint at power steering gear assembly side, and release steering lower shaft. Refer to PS-12, "
Removal and Installation".
4. Remove tunnel stay. Refer to RSU-5, "
On-Vehicle Inspection and Service".
5. Remove rear propeller shaft. Refer to PR-7, "
On-Vehicle Inspection".
 After disconnection, plug the openi ng on transmission assembly side.
6. Disengage A/T control rod at contro l device assembly side. Then, temporarily secure it on the transmis-
sion assembly, so that it does not sag. Refer to AT-205, "
Control Device Removal and Installation".
7. Remove rear plate from oil pan (upper). Then remove bolts fixing drive plate to torque converter. Refer to
EM-30, "
Component (2WD Models)" and AT-241, "Removal and Installation (2WD Models)".
8. Remove transmission joint bolts which pierce at oil pan (upper) lower rear side. Refer to AT-241,
"Removal and Installation (2WD Models)".
9. Remove front stabilizer. Refer to FSU-15, "
Removal and Installation".
10. Separate steering outer sockets from steering knuckle. Refer to PS-17, "
Removal and Installation".
11. Separate transverse links from suspension member and vehicle body. Refer to FSU-13, "
Removal and
Installation" .
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 the transmission assembly.
CAUTION:
Put a piece of wood or someth ing similar as the supporting
surface, secure a completely stable condition.
2. Remove rear engine mounting member bolts.
3. Remove front suspension member mounting nuts. Refer to FSU-5, "
On-Vehicle Inspection and Service".
4. Carefully lower jack, or raise lift to remove t he engine, the transmission assembly and front suspension
member. When performing work, observe the following caution:
CAUTION:
 Confirm there is no interference with the vehicle.
SBIA0473E
PBIC0804E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

ENGINE ASSEMBLYEM-115
< SERVICE INFORMATION > [VQ35DE]
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 Make sure that all connection
points have been disconnected.
 Keep in mind the center of vehicle gravity cha nges. If necessary, use jack(s) to support the vehi-
cle at rear jacking point(s) to preven t 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 ofengine 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-27, "
On-Vehicle Inspection and Service".
3. Remove engine mounting insulators (RH and LH) under side nuts with power tool.
4. Lift with hoist and separate the engine and the trans mission assembly from front suspension member.
CAUTION:
 Before and during this lifting, always make sure that any harnesses are left connected.
 Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
5. Remove alternator. Refer to SC-19, "
System Description".
6. Remove starter motor. Refer to SC-8, "
System Description".
7. Separate the engine from the transmission assembly. Refer to AT-241, "
Removal and Installation (2WD
Models)".
8. Remove each engine mounting insulator and each engine mounting bracket from the engine with power tool.
9. Remove rear engine mounting member and engine mounting insulator (rear) from the transmission assembly.
INSTALLATION
Note the following, and install in the reverse order of removal.
 Do not allow engine mounting insulator to be damage and careful no 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-112, "
Component (2WD
Models)".
Slinger bolts:
: 28.0 N·m (2.9 kg-m, 21 ft-lb)
PBIC2061E
KBIA1017E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-116
< SERVICE INFORMATION >[VQ35DE]
ENGINE ASSEMBLY
 When installing engine mounting bracket (RH and LH) on cylinder
block, tighten two upper bolts (show n 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 incl uding engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-9, "
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 leak-
age at connection points.
- Start engine. With engine speed increased, che ck 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 leak age of fuel, exhaust gases, or any oil/fluids includ-
ing engine oil and engine coolant.
 Bleed air from lines and hoses of applic able 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
Items 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 —
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

ENGINE ASSEMBLYEM-117
< SERVICE INFORMATION > [VQ35DE]
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Component (AWD Models)INFOID:0000000001325744
Removal and Installation (AWD Models)INFOID:0000000001325745
WARNING:
 Situate the vehicle on a flat and solid surface.
 Place chocks at front and back of rear wheels.
 For engines not equipped with engi
ne 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 th e engine section, refer to the applicable sections.
 Always use the support poin t specified for lifting.
 Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for unavoid-
able 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 fo r lifting and jacking point at rear axle, refer to GI-37, "
Garage Jack and
Safety Stand".
REMOVAL
Outline
1. Engine mounting bracket (RH) 2. Engine mounting bracket (RH) (Low-
er)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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C