2008 INFINITI FX35 engine

PRECAUTIONSEM-161
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Precaution for Assembly and InstallationINFOID:0000000001325756
 Use torque wrench to tighten bolts or nuts to specification.
 When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is specified,
do exactly as specified.
 Replace with new gasket, packing, oil seal or O-ring.
 Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for any restriction and blockage.
 Guide pins are used for several parts alignment. When replacing and reassembling parts with guide pins, make sure that guide pins are installed in the original portion.
 Avoid damaging sliding or mating surfaces. Completely re move foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.
 Release air within route when refilling after draining engine coolant.
 After repairing, start engine and increase engine speed to check engine coolant, fuel, engine oil, and
exhaust gases for leakage.
Parts Requiring Angle TighteningINFOID:0000000001325757
 Use angle wrench [SST: KV10112100 (BT8653-A)] for the final tightening of the following engine parts:
- Cylinder head bolts
- Main bearing cap bolts
- Connecting rod cap nuts
- Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angletightening)
 Do not use a torque value for final tightening.
 The torque value for these parts are for a preliminary step.
 Ensure thread and seat surfaces are clean and coated with engine oil.
Precaution for Liquid GasketINFOID:0000000001325758
REMOVAL OF LIQUID GASKET SEALING
 After removing mounting nuts and bolts, separate the mating sur- face using seal cutter (SST) and remove old liquid gasket sealing.
CAUTION:
Be careful not to damage the mating surfaces.
 Tap seal cutter to insert it, and then slide it by tapping on the side
as shown in the figure.
 In areas where seal cutter (SST) is difficult to use, use plastic ham-
mer to lightly tap the parts, to remove it.
CAUTION:
If for some unavoidable reaso n tool such as screwdriver is
used, be careful not to damage the mating surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using scraper, remove old liquid gasket adhering to the liquid gasket application surface and the mating surface.
 Remove liquid gasket completely from the groove of the liquid
gasket application surface, mounting bolts, and bolt holes.
2. Wipe the liquid gasket application surface and the mating sur- face with white gasoline (lighting and heating use) to remove
adhering moisture, grease and foreign materials.
PBIC0002E
PBIC0003E
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EM-162
< SERVICE INFORMATION >[VK45DE]
PRECAUTIONS
3. Attach liquid gasket tube to t
ube presser (commercial service
tool).
Use Genuine RTV Silicone Seal ant or equivalent. Refer to
GI-44
.
4. Apply liquid gasket without breaks to the specif ied location with the specified dimensions.
 If there is a groove for the liquid gasket application, apply liquid gasket to the groove.
 As for the bolt holes, normally apply liquid gasket inside the holes. Occasionally, it should be applied outside the holes.
Make sure to read the text of this manual.
 Within five minutes of liquid gasket application, install the mat-
ing component.
 If liquid gasket protrudes, wipe it off immediately.
 Do not retighten after the installation.
 Wait 30 minutes or more after installation before refilling engine with engine oil and engine coolant.
CAUTION:
If there are specific instruct ions in this manual, observe
them.
EMA0622D
SEM159F
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PREPARATIONEM-165
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(Kent-Moore No.)
Tool name
Description
(—)
Tube presser Pressing the tube of liquid gasket
(—)
Power tool Loosening nuts and bolts
(—)
Spark plug wrench Removing and installing spark plug
(—)
Manual lift table caddy Removing and installing engine
(J–24239-01)
Cylinder head bolt wrench Loosening and tightening cylinder head bolt,
and use with angle wrench [SST:
KV10112100 (BT–8653-A)]
a: 13 (0.51) dia.
b: 12 (0.47)
c: 10 (0.39)
Unit: mm (in)
(—)
Valve seat cutter set Finishing valve seat dimensions
(—)
Piston ring expander Removing and installing piston ring
S-NT052
PBIC0190E
S-NT047
ZZA1210D
NT583
S-NT048
S-NT030
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGEM-167
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NOISE, VIBRATION AND HARSHN
ESS (NVH) TROUBLESHOOTING
NVH Troubleshooting - Engine NoiseINFOID:0000000001325761
Use the Chart Below to Help You Find the Cause of the SymptomINFOID:0000000001325762
1. Locate the area where noise occurs.
2. Confirm the type of noise.
PBIC2865E
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EM-168
< SERVICE INFORMATION >[VK45DE]
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not relatedLocation
of noise Type of
noise Operating condition of engine
Source of noise Check item
Refer-
ence page
Be-
fore
warm- up After
warm-
up When
start-
ing When
idling When
racing While
driving
Top of en-
gine
Rocker
cover
Cylinder
head Ticking or
clicking
C A — A B — Tappet noise Valve clearance
EM-218
Rattle C A — A B CCamshaft
bearing noiseCamshaft journal oil
clearance
Camshaft runout EM-211EM-211
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock
—A—B B— Piston pin
noisePiston to piston pin oil
clearance
Connecting rod bushing
oil clearance EM-256
EM-256
Slap or
rap
A——B B A Piston slap
noisePiston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsion EM-256EM-256
EM-256
EM-256
Knock A B C B B B
Connecting
rod bearing
noiseConnecting rod bushing
oil clearance
Connecting rod bearing
oil clearance
EM-256EM-256
Knock A B — A B C
Main bearing
noiseMain bearing oil clear-
ance
Crankshaft runout EM-256EM-256
Front of
engine
front coverTapping or
ticking
AA—BBB Timing chain
and chain
tensioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operation
EM-200
EM-199
Front of
engineSqueak-
ing or fizz-
ing
AB—B—C Drive belts
(Sticking or
slipping)Drive belts deflection
EM-170
Creaking A B A B A B Drive belts
(Slipping)Idler pulley bearing op-
eration
Squall
Creak AB—BAB Water pump
noise
Water pump operation
CO-50
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ENGINE ROOM COVEREM-169
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ENGINE ROOM COVER
ComponentINFOID:0000000001325763
Removal and InstallationINFOID:0000000001325764
REMOVAL
CAUTION:
Do not damage or scratch cover when installing or removing.
 Major parts and inspection points under each cover are as follows: (numbered as in the figure)
INSTALLATION
Install in the reverse order of removal.
1. Mount nut 2. Battery cover 3. Air duct (inlet)
4. Clip 5. Engine cover
PBIC4550E
1 : Upper side of engine assembly and power steering reservoir tank
2 : Relay and battery
3 : Engine assembly front side, drive belts and cooling fan
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EM-170
< SERVICE INFORMATION >[VK45DE]
DRIVE BELTS
DRIVE BELTS
ComponentINFOID:0000000001325765
Checking Drive BeltsINFOID:0000000001325766
WARNING:
Be sure to perform when engine is stopped.
 Remove air duct (inlet) when inspecting drive belt for alternator, water pump and A/C compressor.
 Remove front engine undercover with power tool when inspecting power steering oil pump belt.
 Make sure that indicator (single line notch) of eac
h auto tensioner is within the allowable working range
(between three line notches).
NOTE:
 Check auto tensioner indication when engine is cold.
 When new drive belt is installed, the range should be “A”.
 The indicator notch is located on the moving side of auto tensioner for alternator, water pump and A/C
compressor belt, while it is found on the fixed side for power steering oil pump belt.
 Visually check entire belt for wear, damage or cracks.
 If the indicator is out of allowable wo rking range or belt is damaged, replace belt.
Tension AdjustmentINFOID:0000000001325767
Belt tensioning is not necessary, as it is automatically adjusted by auto tensioner.
Removal and InstallationINFOID:0000000001325768
REMOVAL
Alternator, Water Pump and A/C Compressor Belt
1. Remove air duct (inlet). Refer to EM-173, "Component".
2. With box wrench, and while securely holding the hexagonal part in pulley center of auto tensioner, move wrench handle in the
direction of arrow (loosening direction of tensioner).
CAUTION:
 Avoid placing hand in a location where pinching may
occur if the holding tool accidentally comes off.
 Do not loosen the hexagonal part in center of drive belt auto-tensioner pulley (Do not tu rn it clockwise). If turned
clockwise, the complete dri ve belt auto-tensioner must be
replaced as a unit, including the pulley.
PBIC2331E
PBIC2976E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

DRIVE BELTSEM-171
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3. Under the above condition, insert a metallic 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 tensioner pulley arm.
 Leave auto tensioner pulley arm locked until belt is installed again.
4. Remove alternator, water pump and A/C compressor belt.
Power Steering Oil Pump Belt
1. Remove air duct (inlet). Refer to EM-173, "Component".
2. Remove front engine undercover with power tool.
3. Remove alternator, water pump and A/C compressor belt. Refer to "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 locat ion where pinching may occur
if holding tool accidentally comes off.
5. Under the above condition, insert a metallic 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 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 coolan t 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-170, "
Checking Drive Belts".
ComponentINFOID:0000000001325769
CAUTION:
The complete drive belt auto-tensioner must be replaced as a unit, including the pulley.
PBIC1543E
1.Auto tensioner ( Us
ed for alternator,
water pump and A/C compressor) 2. Idler pulley 3. Auto tensioner (Use
d for power steer-
ing oil pump belt)
PBIC2788E
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