torque INFINITI QX56 2011 Factory Owners Manual

EM-4
< PRECAUTION >
PRECAUTIONS
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Turn the push-button ignition switch to ACC position. (At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock wi ll remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.
5. When the repair work is completed, re-connect bot h battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button igniti on switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT-III.
Precaution for Drain Engine Coolant and Engine OilINFOID:0000000006289509
Drain engine coolant and engine oil when engine is cooled.
Precaution for Disconnecting Fuel PipingINFOID:0000000006289510
 Before starting work, check no fire or sp ark 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 Handling High Pressure Fuel SystemINFOID:0000000006289511
 High pressure fuel system components are betw een high pressure fuel pump and fuel injector.
 Always release fuel pressure and never start the engine when performing removal and installation.
 When removing or installing parts without releasing fuel pressure, fuel may be splashed and, if fuel contacts
skin or eyes, it may cause inflammation.
Precaution for Removal and DisassemblyINFOID:0000000006289512
 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 tape or the equival ent, if necessary, to seal out foreign materials.
 Mark and arrange disassembly parts in an organi zed way for easy troubleshooting and assembly.
 When loosening nuts and bolts, as a basic rule, star t 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
where noted in the step.
Precaution for Inspection, Repair and ReplacementINFOID:0000000006289513
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precaution for Assembly and InstallationINFOID:0000000006289514
 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.
 Dowel pins are used for several parts alignment. When replacing and reassembling parts with dowel pins,
check that dowel pins are installed in the original position.
Revision: 2010 May2011 QX56

EM-8
< PREPARATION >
PREPARATION
KV10114400
(J-38365)
Heated oxygen sensor wrenchLoosening or tightening heated oxygen sen-
sor 2
a: 22 mm (0.87 in)
KV10117100
(J-44626)
Heated oxygen sensor wrench Loosening or tightening air fuel ratio sensor 1
a: 22 mm (0.87 in)
KV10120100
(J-47245)
Ring gear stopper Removing and installing crankshaft pulley
—
(J-45488)
Quick connector release Removing fuel tube quick connectors in en-
gine room
(Available in SEC. 164 of PARTS CATA-
LOG:Part No. 16441 6N210)
KV10119300
(—)
Adapter and torque wrench assembly Tightening rocker cover mounting bolts.
(specified torque)
KV10119600
(—)
Injector remover Removing fuel injector
Tool number
(Kent-Moore No.)
Tool name
Description
JPBIA0397ZZ
NT379
LBIA0451E
PBIC0198E
JPBIA2623ZZ
JPBIA3746ZZ
Revision: 2010 May2011 QX56

EM-28
< REMOVAL AND INSTALLATION >
AIR CLEANER AND AIR DUCT
Note the following item, and install in the reverse order of removal.
 Align marks. Attach each joint. Screw clamps firmly.
InspectionINFOID:0000000006289540
INSPECTION AFTER REMOVAL
Inspect air duct assembly for crack or tear.
 If damage is found, replace air duct assemblyClamp tightening torque
: 4.5 N·m (0.46 kg-m, 40 in-lb)
Revision: 2010 May2011 QX56

ROCKER COVEREM-35
< REMOVAL AND INSTALLATION >
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4. Tighten bolts in two steps separately in numerical order as
shown in the figure.
 Because of the limited working space, use adapter and torquewrench assembly [SST: KV10119300 ( — )] (A) to tighten
bolts (on the No.7 and No. 8 cylinders) to the specified torque.
5. Install ignition coil. Refer to EM-29, "
Exploded View".
CAUTION:
 Install Ignition coil marked with an identification mark (A)
on cylinder No. 5, 6, 7 and 8.
6. Install VVEL actuator motor assembly. Refer to EM-36, "
Exploded View".
7. Install in the reverse order of removal.
A: Bank 2
B: Bank 1
: Engine front
1st step : 2.0 N·m (0.2 kg-m, 18 in-lb)
2nd step : 8.3 N·m (0.85 kg-m, 73 in-lb)
JPBIA3481ZZ
: Engine front
JPBIA2622ZZ
: Engine front
JPBIA3471ZZ
Revision: 2010 May2011 QX56

EM-42
< REMOVAL AND INSTALLATION >
EXHAUST MANIFOLD AND THREE WAY CATALYST
 Tighten mounting nuts in numerical order as shown in the figure.CAUTION:
All exhaust manifold nuts are tightened at twice.
Air Fuel Ratio Sensor 1, Heated Oxygen Sensor 2
CAUTION:
 Before installing new sensors, clean exhaust system threads usin g oxygen sensor thread cleaner
(commercial service tool: J-43897-18 or J-43897-12), and apply anti-seize lubricant (commercial ser-
vice tool).
 Sensors are not reusable. Replace them with a ne w one after removal. When replacing them, handle
with care not to impact on them.
 When installing the new air fu el ratio sensors 1 (1), set the
heated oxygen sensor wren ch [SST: KV10117100(J-44626)] (A)
in the hexagonal part to tighten the them.
 Never over torque sensors. Doing so may cause da mage to the sensors, resulting in “MIL” coming
on.
InspectionINFOID:0000000006289552
INSPECTION AFTER DISASSEMBLY
Surface Distortion
 Check the surface distortion of the exhaust manifold mating sur- face with a straightedge (A) and a feeler gauge (B).
 If it exceeds the limit, replace exhaust manifold.
A: Bank 1
B: Bank 2 : Engine front
JPBIA3475ZZ
JPBIA3492ZZ
Limit : Refer to EM-133, "ExhaustManifold".
JPBIA0018ZZ
Revision: 2010 May2011 QX56

OIL PAN (UPPER)EM-59
< REMOVAL AND INSTALLATION >
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a. Use a scraper (A) to remove old liquid gasket from mating sur-
faces.
 Also remove the old liquid gasket from mating surface of cylin-der block.
 Remove old liquid gasket from the bolt holes and threads.
CAUTION:
Never scratch or damage th e mating surfaces when clean-
ing off old liquid gasket.
b. Install new O-rings on the bottom of cylinder block and oil pump.
c. Apply a continuous bead of liquid gasket with tube pre sser (commercial service tool) to the cylinder block
mating surfaces of oil pan (upper) to a limited portion as shown in the figure.
Use Genuine RTV silicone sealant or equivalent. Refer to GI-22, "
Recommended Chemical Prod-
ucts and Sealants".
CAUTION:
Attaching must be done with in 5 minutes after coating.
d. Tighten mounting bolts in numerical order as shown in the fig- ure.
CAUTION:
Install avoiding misal ignment of O-rings.
NOTE:
Tighten mounting bolts No. 1 and 2 in two steps. The numerical
order No. 9 and 16 shown second steps.
 There are four types of mounting bolts. Refer to the following for locating bolts.
e. Tighten transmission joint bolts.
f. Install rear plate cover.
2. Install oil strainer.
JPBIA3503ZZ
a. : 5.5 - 7.5 mm (0.217 - 0.295 in) b. : φ4.0 - 5.0 mm (0.157 - 0.197 in)
: Engine front
JPBIA3504ZZ
: Engine front
JPBIA3502ZZ
Order number for tightening 17, 18 2 (16), 3, 5, 6, 7, 8, 10,
11, 14, 15 1(9), 4 12, 13
Bolt size M6 M8
Bolt length 45 mm (1.77 in) 25 mm (0.98 in) 30.0 mm (1.18 in) 120 mm (4.72 in)
Tightening torque 9.0 N· (0.92 kg-m, 80
in-lb) 22.0 N·m (2.2 kg-m, 16 ft-lb)
Revision: 2010 May2011 QX56

CAMSHAFTEM-79
< REMOVAL AND INSTALLATION >
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1. Put V-block on precise flat table, and support No. 2 and 5 jour-
nals of camshaft.
CAUTION:
Never support No. 1 journal (on the side of camshaft
sprocket) because it has a different diameter from the other
four locations.
2. Set a dial indicator vertically to No. 3 journal.
3. Turn exhaust camshaft to one direction with hands, and mea- sure the camshaft runout on a dial indicator. (Total indicator
reading)
4. If it exceeds the limit, replace exhaust camshaft.
Exhaust Camshaft Cam Height
 Measure the exhaust camshaft cam height with a micrometer.
 If wear exceeds the limit, replace exhaust camshaft.
Exhaust Camshaft Journal Oil Clearance
EXHAUST CAMSHAFT JOURNAL DIAMETER
 Measure the outer diameter of exhaust camshaft journal with a micrometer (A).
VVEL LADDER ASSEMBLY (EXH SIDE) INNER DIAMETER Tighten VVEL ladder assembly bolts to the specifi ed torque. Refer to “ASSEMBLY” for the tightening proce-
dure.
 Measure inner diameter (A) of VVEL ladder assembly (exhaust side) with a bore gauge.
EXHAUST CAMSHAFT JOURNAL OIL CLEARANCE
Standard and limit
: Refer to EM-133, "
Camshaft".
PBIC0929E
Standard and limit
: Refer to EM-133, "
Camshaft".
EMQ0072D
Standard : Refer to EM-133, "Camshaft".
JPBIA0122ZZ
Standard : Refer to EM-133, "Camshaft".
PBIC1645E
Revision: 2010 May2011 QX56

EM-104
< UNIT DISASSEMBLY AND ASSEMBLY >
ENGINE STAND SETTING
7. Drain engine coolant by removing water drain plug (3) from bothsides of the cylinder block as shown in the figure.
1: Washer
2 : Plug (engine coolant)
4 : Plug (engine oil)
5: Washer
: Engine front
Refer to GI-4, "
Components" for symbol marks in the figure.
Water drain plug torque
: 19.6 N·m (2.0 kg/m, 14 ft-lb)
JPBIA3501ZZ
Revision: 2010 May2011 QX56

EM-110
< UNIT DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
2. Install each plug to cylinder block as shown in the figure. Tighten each plug as specified below.
 Replace washers (1), (5) with new ones.
 Apply sealant to the thread of water drain plug (3).Use Genuine RTV silicone seal ant or equivalent. Refer to
GI-22, "
Recommended Chemical Pr oducts and Sealants".
 Apply sealant to the thread of plug (4). Use high strength thread lo cking sealant or equivalent.
Refer to GI-22, "
Recommended Chemical Products and
Sealants".
3. Install pilot converter to crankshaft, if removed.  With drift [outer diameter: appr ox. 35 mm (1.38 in)], press-fit
as far as it will go.
 Press-fit pilot converter with its chamfering side facing crank- shaft as shown in the figure.
4. Install main bearings and thrust bearings as per the following: CAUTION:
Be careful not to drop main b earing, and to scratch the surface.
a. Remove dust, dirt, and engine oil on bearing mating surfaces of cylinder block and main bearing caps.
: Engine front
Refer to GI-4, "
Components" for symbols in the figure.
Part Tightening torque
Plug (2) 78.0 N·m (8.0 kg-m, 58 ft-lb)
Water drain plug (3) 19.6 N·m (2.0 kg-m, 14 ft-lb) Plug (4) 53.9 N·m (5.5 kg-m, 40 ft-lb)
JPBIA3501ZZ
EMP0569D
: Crankshaft side
JPBIA0210ZZ
Revision: 2010 May2011 QX56

EM-118
< UNIT DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
 Install connecting rod bearing cap without installing connecting rodbearing, and tighten connecting rod bolts to the specified torque.
Refer to EM-107, "
Disassembly and Assembly" for the tightening
procedure.
 Measure the inner diameter of connecting rod big end with an inside micrometer.
 If out of the standard, replace connecting rod assembly.
CONNECTING ROD BUSHING OIL CLEARANCE
Connecting Rod Bushing Inner Diameter
Measure the inner diameter of connecting rod bushing with an inside
micrometer (A).
Piston Pin Outer Diameter
Measure the outer diameter of piston pin with a micrometer (A).
Connecting Rod Bushing Oil Clearance
(Connecting rod bushing oil clearance) = (Connecting rod bus hing inner diameter) – (Piston pin outer diame-
ter)
 If the calculated value exceeds the limit, replac e connecting rod assembly and/or piston and piston pin
assembly.
 If replacing piston and piston pin assembly, refer to EM-125, "
Description".
 If replacing connecting rod assembly, refer to EM-126, "
ConnectingRodBearing" to select the connecting
rod bearing.
CYLINDER BLOCK DISTORTION
 Using a scraper, remove gasket on the cylinder block su rface, and also remove engine oil, scale, carbon, or
other contamination.
CAUTION:
Be careful not to allow gasket flakes to en ter engine oil or engine coolant passages.
1 : Connecting rod
Standard : Refer to EM-137, "CylinderBlock".
JPBIA0222ZZ
Standard : Refer to EM-137, "CylinderBlock".
JPBIA0223ZZ
Standard : Refer to EM-137, "CylinderBlock".
JPBIA0218ZZ
Standard and limit : Refer to EM-137, "CylinderBlock".
Revision: 2010 May2011 QX56