2010 INFINITI QX56 engine

LU-18
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Standard and LimitINFOID:0000000005149033
OIL PRESSURE
Unit: kPa (kg/cm2, psi)
OIL PUMP
Unit: mm (in)
REGULATOR VALVE
Unit: mm (in)
ENGINE OIL CAPACITY (APPROXIMATE)
Unit: (US qt, Imp qt)
Engine speed Approximate discharge oil pressure
Idle speed More than 98 (1.0, 14)
2,000 rpm More than 294 (3.0, 43)
Body to outer rotor radial clearance0.114 - 0.200 (0.0045 - 0.0079)
Inner rotor to outer rotor tip clearance Below 0.180 (0.0071)
Body to inner rotor side clearance 0.030 - 0.070 (0.0012 - 0.0028)
Body to outer rotor side clearance 0.030 - 0.090 (0.0012 - 0.0035)
Inner rotor to brazed portion of housing clearance 0.045 - 0.091 (0.0018 - 0.0036)
Regulator valve to oil pump cover clearance 0.040 - 0.097 (0.0016 - 0.0038)
Drain and refillWith oil filter change 6.5 (6-7/8, 5-3/4)
Without oil filter change
6.2 (6-1/2, 5-1/2)
Dry engine (engine overhaul) 7.6 (8, 6-3/4)
Revision: April 20092010 QX56

MA-1
MAINTENANCE
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SECTION MA
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CONTENTS
MAINTENANCE
PRECAUTION .......
........................................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
3
PREPARATION ............................................5
PREPARATION .............................................. .....5
Special Service Tool ........................................... ......5
Commercial Service Tool ..........................................5
ON-VEHICLE MAINTENANCE .....................6
GENERAL MAINTE NANCE ........................... .....6
General Maintenance .......................................... ......6
PERIODIC MAINTENANCE ................................9
Introduction of Periodic Maintenance .................. ......9
Maintenance for Off-road Driving (4WD only) ...........9
Schedule 1 ................................................................9
Schedule 2 ..............................................................11
RECOMMENDED FLUIDS AND LUBRI-
CANTS ................................................................
13
Fluids and Lubricants .......................................... ....13
Engine Oil Recommendation ..................................14
ENGINE MAINTENANCE ...................................15
DRIVE BELTS ....................................................... ....15
DRIVE BELTS : Exploded View ..............................15
DRIVE BELTS : Checking Drive Belts ....................15
ENGINE COOLANT ............................................... ....15
ENGINE COOLANT : Inspection .............................15
ENGINE COOLANT : Changing Engine Coolant ....17
FUEL LINES .......................................................... ....19
FUEL LINES : Checking Fuel Line ..........................19
FUEL FILTER ......................................................... ....19
FUEL FILTER : Changing Fuel Filter .......................19
AIR CLEANER FILTER ......................................... ....19
AIR CLEANER FILTER : Exploded View ................20
AIR CLEANER FILTER : Removal and Installation
(Viscous paper type) ................................................
20
ENGINE OIL ........................................................... ....20
ENGINE OIL : Inspection .........................................20
ENGINE OIL : Changing Engine Oil ........................22
OIL FILTER ............................................................ ....22
OIL FILTER : Removal and Installation ...................22
SPARK PLUG ........................................................ ....23
SPARK PLUG : Exploded View ...............................24
SPARK PLUG : Removal and Installation ...............24
EVAP VAPOR LINES ............................................ ....25
EVAP VAPOR LINES : Checking EVAP Vapor
Line ..........................................................................
25
CHASSIS AND BODY MAINTENANCE ...........26
IN-CABIN MICROFILTER ...................................... ....26
IN-CABIN MICROFILTER : Removal and Installa-
tion ....................................................................... ....
26
EXHAUST SYSTEM ...................................................26
EXHAUST SYSTEM : Checking Exhaust System ....26
A/T FLUID .............................................................. ....27
A/T FLUID : Checking the A/T Fluid (ATF) ..............27
A/T FLUID : Changing the A/T Fluid (ATF) ..............29
TRANSFER FLUID ................................................ ....30
TRANSFER FLUID : Replacement ..........................30
TRANSFER FLUID : Inspection ..............................30
PROPELLER SHAFT ............................................. ....31
PROPELLER SHAFT : Checking Propeller Shaft ....31
DIFFERENTIAL GEAR OIL ................................... ....31
Revision: April 20092010 QX56

PRECAUTIONSMA-3
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental
Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005403129
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000005403130
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS , an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
Revision: April 20092010 QX56

PREPARATIONMA-5
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PREPARATION
PREPARATION
Special Service ToolINFOID:0000000005145931
The actual shapes of the Kent-Moore t
ools may differ from those of the special service tools illustrated here.
Commercial Service ToolINFOID:0000000005145932
Tool number
(Kent-Moore No.)
Tool name Description
KV10115801
(J-38956)
Oil filter cap wrench Removing and installing oil filter
a: 64.3 mm (2.531 in)
KV991J0010
(J-23688)
Engine coolant refractometer Checking concentration of ethylene glycol in
engine coolant
KV991J0070
(J-45695)
Coolant refill tool Filling cooling system
NT375
WBIA0539E
LMA053
(Kent-Moore No.)
Tool name
Description
Power tool Loosening bolts, screws and nuts
Spark plug wrench Removing and installing spark plug
PIIB1407E
S-NT047
Revision: April 20092010 QX56

MA-6
< ON-VEHICLE MAINTENANCE >
GENERAL MAINTENANCE
ON-VEHICLE MAINTENANCE
GENERAL MAINTENANCE
General MaintenanceINFOID:0000000005145933
General maintenance includes those items which should be checked during the normal day-to-day operation
of the vehicle. They are essential if the vehicle is to continue operating properly. The owner can perform these
checks and inspections or have thei r INFINITI dealers perform them.
OUTSIDE THE VEHICLE
The maintenance items listed here should be performed fr om time to time, unless otherwise specified.
INSIDE THE VEHICLE
The maintenance items listed here should be checked on a regular basis, such as when performing periodic maintenance, cleaning the vehicle,
etc.
Item Reference page
Tires Check the pressure with a gauge often and always prior to long distance trips.
Adjust the pressure in all tires, including the spare, to the pressure specified.
Check carefully for damage, cuts or excessive wear. WT-47, "
Inspection"
Wheel lug nuts
When checking the tires, make sure no nuts are missing, and check for any loose
nuts. Tighten if necessary. WT-49, "Rotation"
Windshield
Clean the windshield on a regular basis. Check the windshield at least every six
months for cracks or other damage. Repair as necessary. GW-11, "Removal and
Installation"
Tire rotation
Tires should be rotated every 12,000 km (7,500 miles). WT-49, "Rotation"
Tire Pressure Monitor-
ing System (TPMS)
transmitter componentsReplace the TPMS transmitter grommet seat, valve core and cap when the tires
are replaced due to wear or age.
WT-50, "Transmitter
(Pressure Sensor)"
Wheel alignment and
balanceIf the vehicle pulls to either side while driving on a straight and level road, or if
you detect uneven or abnormal tire wear, there may be a need for wheel align-
ment. If the steering wheel or seat vibrates at normal highway speeds, wheel bal-
ancing may be needed. WT-48, "Balancing
Wheels", FSU-6, "Front
Wheel Alignment"
Windshield wiper
blades
Check for cracks or wear if they do not wipe properly.
—
Doors and engine
hood Check that all doors and the engine hood operate smoothly as well as the back
door. Also make sure that all latches lock securely. Lubricate if necessary. Make
sure that the secondary latch keeps the hood from opening when the primary
latch is released.
When driving in areas using road salt or other corrosive materials, check lubri-
cation frequently. MA-38, "
LOCKS AND
HINGES : Lubricating
Locks, Hinges and Hood
Latches"
Lamps
Make sure that the head lamps, stop lamps, tail lamps, turn signal lamps, and
other lamps are all operating properly and installed securely. Also check head
lamp aim. Clean the head lamps on a regular basis. EXL-145, "HEADLAMP :
Aiming Adjustment"
Item
Reference page
Warning lamps and
chimes Make sure that all warning lamps and chimes are operating properly.
WCS-4, "
WARNING
CHIME SYSTEM : Sys-
tem Description"
Windshield wiper and
washerCheck that the wipers and washer operate properly and that the wipers do not
streak.
—
Windshield defroster Check that the air comes out of the defroster outlets properly and in sufficient
quantity when operating the heater or air conditioner. —
Steering wheel Check that it has the specified play. Be sure to check for changes in the steering
condition, such as excessive play, hard steering or strange noises.
Free play: less than 35mm (1.38 in) ST-15, "
On-Vehicle In-
spection and Service"
Seats
Check seat position controls such as seat adjusters, seat back recliner, etc. to
make sure they operate smoothly and that all latches lock securely in every po-
sition. Check that the head restraints move up and down smoothly and that the
locks (if equipped) hold securely in all latched positions. Check that the latches
lock securely for folding-down rear seat backs. —
Revision: April 20092010 QX56

GENERAL MAINTENANCEMA-7
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UNDER THE HOOD AND VEHICLE
The maintenance items listed here should be checked periodically (e.g. each time you check the engine oil or refuel).
Seat beltsCheck that all parts of the seat belt system (e.g. buckles, anchors, adjusters and
retractors) operate properly and smoothly and are installed securely. Check the
belt webbing for cuts, fraying, wear or damage. MA-39, "SEAT BELT,
BUCKLES, RETRAC-
TORS, ANCHORS AND
ADJUSTERS : Checking
Seat Belts, Buckles, Re-
tractors, Anchors and
Adjusters"
Accelerator pedal
Check the pedal for smooth operation and make sure the pedal does not catch
or require uneven effort. Keep the floor mats away from the pedal. ACC-6, "Accelerator
Control"
Brakes
Check that the brake does not pull the vehicle to one side when applied. —
Brake pedal and
booster Check the pedal for smooth operation and make sure it has the proper distance
under it when depressed fully. Check the brake booster function. Be sure to keep
the floor mats away from the pedal. BR-15, "
Inspection and
Adjustment", BR-10, "In-
spection"
Parking brake
Check that the lever or the pedal has the proper travel and make sure that the
vehicle is held securely on a fairly steep hill when only the parking brake is ap-
plied. PB-5, "On-Vehicle Ser-
vice"
Automatic transmis-
sion “Park” mecha-
nismCheck that the lock release button on the selector lever operates properly and
smoothly. On a fairly steep hill check that the vehicle is held securely with the se-
lector lever in the P position without applying the brakes.
—
Item
Reference page
Item Reference page
Windshield washer
fluid Check that there is adequate fluid in the tank.
—
Engine coolant level Check the coolant level when the engine is cold. CO-10, "
Inspection"
Radiator and hosesCheck the front of the radiator and clean off any dirt, insects, leaves, etc., that
may have accumulated. Make sure the hoses have no cracks, deformation, de-
terioration or loose connections. —
Brake fluid level Make sure that the brake fluid level is between the “MAX” and “MIN” lines on the
reservoir. MA-34, "
BRAKE FLUID
LEVEL AND LEAKS : On
Board Inspection"
Battery
Check the fluid level in each cell. It should be between the “MAX” and “MIN” lines.
Vehicles operated in high temperatures or under severe conditions require fre-
quent checks of the battery fluid level. —
Engine drive belt Make sure that no belt is frayed, worn, cracked or oily. MA-15, "
DRIVE BELTS :
Checking Drive Belts"
Engine oil levelCheck the level on the oil level gauge after parking the vehicle on a level spot and
turning off the engine. LU-8, "Inspection"
Power steering fluid
level and lines
Check the level on the dipstick with the engine off. Check the lines for improper
attachment, leaks, cracks, etc. MA-37, "POWER
STEERING FLUID AND
LINES : Checking Fluid
Level"
Automatic transmis-
sion fluid level
Check the level on the fluid level gauge after putting the selector lever in “P” with
the engine idling. MA-27, "A/T FLUID :
Checking the A/T Fluid
(ATF)"
Exhaust system
Make sure there are no loose supports, cracks or holes. If the sound of the ex-
haust seems unusual or there is a smell of exhaust fumes, immediately locate
the trouble and correct it. MA-26, "EXHAUST SYS-
TEM : Checking Exhaust
System"
Revision: April 20092010 QX56

PERIODIC MAINTENANCEMA-9
< ON-VEHICLE MAINTENANCE >
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PERIODIC MAINTENANCE
Introduction of Periodic MaintenanceINFOID:0000000005145934
Two different maintenance schedules are provi
ded, and should be used, depending upon the conditions in
which the vehicle is mainly operated. After 60,000 miles (96,000 km) or 48 months, continue the periodic
maintenance at the same mileage or ti me intervals, whichever comes first.
Maintenance for Off-road Driving (4WD only)INFOID:0000000005145935
Whenever you drive off-road through sand, mud, or wa ter; more frequent maintenance may be required for the
following items:
Brake pads and rotors
Brake lines and hoses
Rear final drive oil, transmission fluid, and transfer fluid
Steering linkage
Drive shafts
Engine air cleaner filter
In-cabin microfilters
Schedule 1INFOID:0000000005145936
EMISSION CONTROL SYSTEM MAINTENANCE
Abbreviations: R = Replace. I = Ins pect. Correct or replace if necessary. [ ]: At the mileage intervals only
Schedule 1Follow Periodic Maintenance Schedule 1 if the driving habits frequently includes
one or more of the following driving conditions:
• Repeated short trips of less than 5 miles (8 km).
• Repeated short trips of less than 10 miles (16 km) with outside temperatures re-
maining below freezing.
• Operating in hot weather in stop-and-go “rush hour” traffic.
• Extensive idling and/or low speed driving for long distances, such as police, taxi
or door-to-door delivery use.
• Driving in dusty conditions.
• Driving on rough, muddy, or salt spread roads.
• Towing a trailer or using a car-top carrier. Emission Control Sys-
tem Maintenance
MA-9
Chassis and Body
Maintenance
MA-9
Schedule 2Follow Periodic Maintenance Schedule 2 if none of the driving conditions shown
in Schedule 1 apply to the driving habits.
Emission Control Sys-
tem MaintenanceMA-11Chassis and Body
Maintenance
MA-11
MAINTENANCE OPERATION
MAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title
Perform at number of miles, kilo-
meters or months, whichever
comes first. Miles x 1,000
(km x 1,000) Months 3.75
(6)3 7.50
(12) 6 11 . 2 5
(18) 9 15
(24) 12 18.75
(30)15 22.5
(36) 18 26.25
(42)21 30
(48) 24
Drive belts NOTE (1) MA-15
Air cleaner filterNOTE (2) [R]MA-20
EVAP vapor lines I*MA-25
Fuel lines I*MA-19
Fuel filter NOTE (3) MA-19
Engine coolantNOTE (4) MA-15
Engine oilR R R R R R R R MA-22
Engine oil filter (Use genuine
NISSAN oil filter or equivalent.)RR RRR R R R
MA-22
Spark plugs (Iridium-tipped type)Replace every 105,000 miles (169,000 km).MA-24
Intake and exhaust valve clear-
ance*NOTE (5)
EM-18
Revision: April 20092010 QX56

MA-10
< ON-VEHICLE MAINTENANCE >
PERIODIC MAINTENANCE
(1) After 60,000 miles (96,000 km) or 48 months, inspect every 15,000 miles (24,000 km) or 12 months. Replace the drive belts if found
damaged or if the auto belt tensioner reading reaches the maximum limit.
(2) If operating mainly in dusty conditions, more frequent maintenance may be required.
(3) Maintenance-free item. For service procedures, go to the FL section.
(4) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
(5) Periodic maintenance is not required. However, if valve noise increases, inspect valve clearance.
* Maintenance items and intervals with “*” are recommended by NISSAN for reliable vehicle operation. The owner need not perform
such maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and intervals are
required.
CHASSIS AND BODY MAINTENANCE
Abbreviations: R = Replace. I = Inspec t. Correct or replace if necessary.
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title
Perform at number of miles, kilo-
meters or months, whichever
comes first. Miles x 1,000
(km x 1,000) Months 33.75
(54)27 37.5
(60) 30 41.25
(66)33 45
(72) 36 48.75
(78)39 52.5
(84) 42 56.25
(90)45 60
(96) 48
Drive belts NOTE (1) I*MA-15
Air cleaner filter NOTE (2) [R]MA-20
EVAP vapor lines I*MA-25
Fuel lines I*MA-19
Fuel filter NOTE (3) MA-19
Engine coolantNOTE (4) R*MA-17
Engine oil R R R R R R R R MA-22
Engine oil filter (Use genuine
NISSAN oil filter or equivalent.)R R RRRRRR
MA-22
Spark plugs (Iridium-tipped type)Replace every 105,000 miles (169,000 km).MA-24
Intake and exhaust valve clear-
ance*NOTE (5)
EM-18
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference
Section- Page or
- Content Title
Perform at number of miles, kilometers or
months, whichever comes first. Miles x
1,000
(km x
1,000)
Months 3.75
(6)3 7.5
(12) 6 11 . 2 5
(18) 9 15
(24) 12 18.75
(30)15 22.5
(36) 18 26.25
(42)21 30
(48) 24
Brake lines and cables IIMA-34
Brake pads and rotors II I IMA-35
Automatic transmission fluid, transfer fluid and
differential gear oil NOTE (1)
IIMA-29,
MA-30
,
MA-32
Steering gear and linkage, axle and suspension
parts II I I
MA-36,
MA-37
Tire Rotation NOTE (2) MA-34
Drive shaft boots and propeller shaft (4WD)II I IMA-31
Exhaust system II I IMA-26
In-cabin microfilter RRMA-26
Revision: April 20092010 QX56