2011 INFINITI QX56 engine oil

OIL SEALEM-97
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REAR OIL SEAL : Removal and InstallationINFOID:0000000006289575
REMOVAL
1. Remove transmission assembly. Refer to
TM-205, "2WD : Exploded View" (2WD models) or TM-208,
"4WD : Exploded View" (4WD models).
2. Remove drive plate. Refer to EM-106, "
Exploded View".
3. Remove rear oil seal with a suitable tool. CAUTION:
Be careful not to damage crankshaft and cylinder block.
INSTALLATION
1. Install rear oil seal. Install rear oil seal so that each seal lip is oriented as shown in
the figure.
 Press in rear oil seal (1) to the position as shown in the figure.
 Using a suitable drift [outer diameter 101 mm (3.98 in)], press-fit until the height of rear oil seal is level with the mounting surface.
 Check the garter spring is in position and seal lips are not inverted. CAUTION:
 Be careful not to damage crankshaft and cylinder block.
 Press-fit straight and avoid cau sing burrs or tilting oil seal.
2. Install in the reverse order of removal after this step.
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A : Oil seal lip
B : Dust seal lip : Engine inside
: Engine outside
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B : Rear oil seal retainer rear end face
a : 0 - 0.5 mm (0 - 0.020 in)
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Revision: 2010 May2011 QX56

EM-100
< UNIT REMOVAL AND INSTALLATION >
ENGINE ASSEMBLY
3. Install engine slinger on both front right and front left sides of theengine.
4. Hoist the slinger to obtain room for engine assembly. CAUTION:
Use an engine lifter to prevent the engine slinger from fall-
ing and damaging the rocker cover.
REMOVAL
Outline
At first, remove the transmission and transfer assemb ly, steering gear and front final drive facing downward.
Then remove the engine.
Preparation
1. Remove engine cover. Refer to EM-25, "Exploded View".
2. Release fuel pressure. Refer to EC-153, "
Work Procedure".
3. Remove battery and tray. Refer to PG-164, "
Exploded View".
4. Remove the following components and related parts:  Hood assembly. Refer to DLK-215, "
Exploded View".
 Front under cover. Refer to EXT-25, "
Exploded View".
 Front road wheel and tires. Refer to WT-64, "
Exploded View".
5. Drain engine oil. Refer to LU-8, "
Draining".
6. Drain engine coolant. Refer to CO-8, "
Draining".
CAUTION:
 Perform this step when engine is cold.
 Never spill engine coolant on drive belts.
7. Drain power steering fluid. Refer to ST-54, "
Exploded View".
Engine Room Front
1. Remove drive belt. Refer to EM-20, "Exploded View".
2. Remove fan shroud. Refer to CO-13, "
Exploded View".
3. Remove cooling fan and fan coupling. Refer to CO-16, "
Exploded View".
4. Remove radiator hoses (upper and lower).
5. Remove radiator.
Vehicle Underbody
1. Remove exhaust front tube. Refer to EX-5, "Exploded View".
2. Remove protector A and B. Refer to SCS-32, "
FRONT TUBE ASSEMBLY : Exploded View".
3. Remove front suspension rear cross member. Refer to TM-205, "
2WD : Exploded View" (2WD models) or
TM-208, "
4WD : Exploded View" (4WD models).
4. Remove oil cooler. Refer to LU-11, "
Exploded View".
A : Engine front slinger (bank 2)
B : Engine front slinger (bank 1)
Slinger bolts:
: 45.0 N·m (4.6 kg-m, 33 ft-lb)
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ENGINE ASSEMBLYEM-101
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5. Remove A/T assembly. Refer to
TM-205, "2WD : Exploded View" (2WD models) or TM-208, "4WD :
Exploded View" (4WD models).
6. Remove steering gear assembly. Refer to ST-41, "
Exploded View".
7. Remove front final drive assembly. Refer to DLN-162, "
Exploded View".
8. Remove exhaust manifold. Refer to EM-40, "
Exploded View".
9. Remove alternator. Refer to CHG-25, "
Exploded View".
Engine Room LH
1. Remove air cleaner and air duct. Refer to EM-27, "Exploded View".
2. Remove A/C compressor. Refer to HA-30, "
Exploded View".
3. Disconnect fuel feed hose and EVAP hose. Refer to EM-43, "
Exploded View".
CAUTION:
Fit plugs onto disconnected hoses to prevent fuel leakage.
Engine Room RH
1. Remove power steering oil pump and reservoir tank. Refer to ST-48, "Exploded View".
2. Disconnect heater hose at heater core side, and fit a plug onto hose end to prevent engine coolant leak-
age.
3. Disconnect ground cable.
4. Disconnect all clips and connectors of the engine harness from vehicle side.
Removal Work
1. Install alternator bracket. Refer to CHG-25, "Exploded View".
 Temporarily tighten mounting bolts.
2. Remove intake manifold. Refer to EM-30, "
Exploded View".
3. Remove starter motor. Refer to STR-17, "
Exploded View".
4. Install engine slingers.
5. Lift using a hoist and secure the engine in position.
6. Remove engine mounting bracket (LH, RH) and engine mounting insulator (LH, RH). Refer to EM-98,
"Exploded View".
7. Remove the engine from the vehi cle, avoid interference with the
vehicle body.
CAUTION:
 Before and during lifting, always check that any har-
nesses are left connected.
 Never damage engine mounti ng insulator and avoid oil/
grease smearing or spills onto engine mounting insulator.
A Engine front slinger (bank 2) B Engine rear slinger C Engine front slinger (bank 1)
Slinger bolts:
: 45.0 N·m (4.6 kg-m, 33 ft-lb)
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EM-102
< UNIT REMOVAL AND INSTALLATION >
ENGINE ASSEMBLY
INSTALLATION
Install in the reverse order of removal.
CAUTION:
 When replacing an engine or transmission you must make sure the dowels are installed correctly
during re-assembly.Improper alignment caused by mi ssing dowels may cause vibration, oil leaks or
breakage of drivetrain components.
InspectionINFOID:0000000006289578
INSPECTION AFTER INSTALLATION
Inspection for Leakage
The following are procedures for checking fluid leakage, lubricant leakage. Before starting engine, check oil/fluid levels includi ng engine coolant and engine oil. If any are less than the
required quantity, fill them to the specified level. Refer to MA-10, "
Fluids and Lubricants".
 Follow the procedure below to check for fuel leakage.
- Turn ignition switch to the “ON” position (with engi ne stopped). With fuel pressure applied to fuel piping,
check for fuel leakage 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. NOTE:
If hydraulic pressure inside chain tensioner drops af ter removal/installation, slack in guide may generate a
pounding noise during and just after the engine start. However, this does not indicate a malfunction. The
noise will stop after hydraulic pressure rises.
 Warm up engine thoroughly to check that there is no leak age of fuel, or any oil/fluids including 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 them to
the specified level, if necessary.
Summary of the inspection items:
*: Power steering fluid, brake fluid, etc. Items Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Transmission /
transaxle fluid AT & CVT Models Leakage Level / Leakage Leakage
MT Models Level / Leakage Leakage Level / Leakage
Other oils and fluids* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —
Revision: 2010 May2011 QX56

ENGINE STAND SETTINGEM-103
< UNIT DISASSEMBLY AND ASSEMBLY >
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UNIT DISASSEMBLY AND ASSEMBLY
ENGINE STAND SETTING
SettingINFOID:0000000006289579
NOTE:
Explained here is how to disassemble with engine stand s
upporting transmission surface. When using a differ-
ent type of engine stand, note the difference in the steps, etc.
1. Remove the engine assembly from the vehicle. Refer to EM-98, "
Exploded View".
2. Remove crankshaft pulley. Refer to EM-96, "
FRONT OIL SEAL : Removal and Installation".
NOTE:
The drive plate is fixed with a ring gear stopper [SST: KV10119200 (J-49277)]. Loosen the crankshaft pul-
ley mounting bolts before installing the engine stand.
3. Remove the parts that may restrict installation of engine to a widely used engine stand.  Fix crankshaft with a ring gear stopper [SST: KV10119200 (J-49277)]. Loosen drive plate mounting bolt
with power tool.
 Check for deformation or damage of drive plate. Refer to EM-115, "
Inspection".
NOTE:
The procedure is described assuming that you us e a widely used engine stand holding the surface, to
which transmission is installed.
4. Remove pilot converter using the pilot bushing puller (commercial service tool), if necessary.
5. Lift the engine with hoist to inst all it onto the widely used engine stand.
CAUTION:
Use an engine stand that has a load capacity [240 kg (529 lb) or more] large enough for supporting
the engine weight.
 If the load capacity of the stand is not adequate, remove the following parts beforehand to reduce the potential risk of overturning the stand.
- Remove intake manifold. Refer to EM-30, "
Exploded View".
- Remove fuel injector and fuel tube assembly. Refer to EM-48, "
Exploded View".
- Remove ignition coil. Refer to EM-29, "
Exploded View".
- Remove rocker cover. Refer to EM-33, "
Exploded View".
- Remove exhaust manifold. Refer to EM-40, "
Exploded View".
- Other removable brackets. NOTE:
The figure shows an example of widely used engine stand (A)
that can hold mating surface of transmission with drive plate
removed.
CAUTION:
Before removing the hang ing chains, check the engine
stand is stable and there is no risk of overturning.
6. Drain engine oil. Refer to LU-8, "
Draining".
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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)
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ENGINE UNITEM-105
< UNIT DISASSEMBLY AND ASSEMBLY >
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ENGINE UNIT
DisassemblyINFOID:0000000006289580
1. Remove intake manifold. Refer to
EM-30, "Exploded View".
2. Remove exhaust manifold. Refer to EM-40, "
Exploded View".
3. Remove oil pan (lower). Refer to EM-54, "
Exploded View".
4. Remove ignition coil and spark plug. Refer to EM-23, "
Exploded View".
5. Remove rocker cover. Refer to EM-33, "
Exploded View".
6. Remove timing chain. Refer to EM-61, "
Exploded View".
7. Remove exhaust camshaft and VVEL ladder assembly. Refer to EM-74, "
Exploded View".
8. Remove cylinder head. Refer to EM-86, "
Exploded View".
AssemblyINFOID:0000000006289581
Assemble in the reverse order of disassembly.
Revision: 2010 May2011 QX56

CYLINDER BLOCKEM-109
< UNIT DISASSEMBLY AND ASSEMBLY >
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a. Loosen side bolts starting from No. 30 to 21 to remove.
b. Loosen main bearing cap sub bolts starting from No. 20 to 11 to
remove.
c. Loosen main bearing cap bolts starting from No. 10 to 1 to remove.
d. Remove the main bearing cap.  Insert bolts (1) into bolt holes, and then remove main bearing
cap (2) by lifting up and shaking forward and backward.
CAUTION:
Be careful not to damage the mounting surface.
11. Remove crankshaft.
12. Remove main bearings and thrust bearings from main bearing cap and cylinder block. CAUTION:
 Be careful not to drop main bear ing, and to scratch the surface.
 Identify installation positions, and store them without mixing them up.
13. Remove pilot converter using the pilot bushing puller (commercial service tool), if necessary.
14. 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 goggles to protect your eyes.
: Engine front
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Revision: 2010 May2011 QX56