2011 INFINITI QX56 check oil

OIL PUMPLU-15
< REMOVAL AND INSTALLATION >
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 Measure radial clearance using a suitable tool.
 Measure side clearance using suitable tools.
 Calculate the clearance between inner rotor and oil pump body as
follows.
1. Measure the outer diameter of protruded portion of inner rotor
(position 5) using suitable tool.
2. Measure the inner diameter of oil pump body to brazed portion (position 6) using suitable tool.
3. Calculate the clearance using the following formula.  (Clearance) = (Inner diameter of oil pump body) - (Outer diameter of inner rotor)
Regulator Valve Clearance
Check regulator valve to oil pump cover clearance using the following formula.Body to outer rotor
(position 1)
: Refer to
LU-17, "
OilPump".
Inner rotor to outer
rotor tip (position 2) : Refer to
LU-17, "
OilPump".
PBIC0139E
Body to inner rotor
(position 3) : Refer to
LU-17, "OilPump".
Body to outer rotor
(position 4) : Refer to
LU-17, "
OilPump".
PBIC0140E
PBIC0141E
PBIC0142E
Inner rotor to brazed portion of housing clearance : Refer to LU-17, "OilPump".
Revision: 2010 May2011 QX56

LU-16
< REMOVAL AND INSTALLATION >
OIL PUMP
 (Clearance) = D1 (Valve hole diameter) - D2 (Outer Diameter of
valve)
CAUTION:
 Coat regulator valve with engine oil.
 Check that it falls smoothly into the regulator valve hole by its
own weight.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level. Refer to LU-7, "Inspection"
2. Start the engine and check for engine oil leaks.
3. Stop the engine and wait 10 minutes.
4. Check the engine oil level and adjust the engine oil level as required. Refer to LU-7, "
Inspection".
Regulator valve
to oil pump cover
: Refer to
LU-17, "
RegulatorVa l v e".
PBIC0143E
Revision: 2010 May2011 QX56

MA-1
MAINTENANCE
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CONTENTS
MAINTENANCE
PREPARATION .............
...............................3
PREPARATION .............................................. .....3
Special Service Tool ........................................... ......3
Commercial Service Tool ..........................................3
PERIODIC MAINTENANCE ..........................4
GENERAL MAINTENANCE ........................... .....4
Explanation of General Maintenance .................. ......4
PERIODIC MAINTENANCE ................................6
Introduction of Periodic Maintenance .................. ......6
Schedule 1 ................................................................6
Schedule 2 ................................................................8
RECOMMENDED FLUIDS AND LUBRI-
CANTS ................................................................
10
Fluids and Lubricants .......................................... ....10
Engine Oil Recommendation ..................................10
Anti-Freeze Coolant Mixture Ratio ..........................11
ENGINE MAINTENANCE ...................................12
DRIVE BELTS ....................................................... ....12
DRIVE BELTS : Exploded View ..............................12
DRIVE BELTS : Checking .......................................12
DRIVE BELTS : Tension Adjustment .....................12
ENGINE COOLANT ............................................... ....12
ENGINE COOLANT : Inspection .............................12
ENGINE COOLANT : Draining ................................13
ENGINE COOLANT : Refilling ................................13
ENGINE COOLANT : Flushing ...............................15
RESERVOIR TANK CAP ..........................................15
RESERVOIR TANK CAP : Inspection ................. ....15
RADIATOR ............................................................ ....16
RADIATOR : Inspection ..........................................16
FUEL LINES .......................................................... ....16
FUEL LINES : Inspection ........................................17
AIR CLEANER FILTER ......................................... ....17
AIR CLEANER FILTER : Removal and Installation
....
17
ENGINE OIL ........................................................... ....17
ENGINE OIL : Draining ............................................17
ENGINE OIL : Refilling ............................................17
OIL FILTER ............................................................ ....18
OIL FILTER : Removal and Installation ...................18
SPARK PLUG ........................................................ ....18
SPARK PLUG : Removal and Installation ...............19
SPARK PLUG : Inspection ......................................19
EVAP VAPOR LINES ............................................ ....20
EVAP VAPOR LINES : Inspection ...........................20
CHASSIS MAINTENANCE ...............................21
EXHAUST SYSTEM . ..................................................21
EXHAUST SYSTEM : Inspec tion ............................21
A/T FLUID .............................................................. ....21
A/T FLUID : Inspection ............................................21
TRANSFER FLUID ................................................ ....21
TRANSFER FLUID : Inspection ..............................21
TRANSFER FLUID : Draining .................................21
TRANSFER FLUID : Refilling ..................................22
FRONT PROPELLER SHAFT: 2F P15 ................. ....22
FRONT PROPELLER SHAFT: 2F P15 : Inspec-
tion ...........................................................................
22
REAR PROPELLER SHAFT: 2F P26 .................... ....23
REAR PROPELLER SHAFT: 2F P26 : Inspection ....23
REAR PROPELLER SHAFT: 2S1410 ................... ....23
REAR PROPELLER SHAFT: 2S1410 : Inspection ....23
FRONT DIFFERENTIAL GEAR OIL: R180A ........ ....24
FRONT DIFFERENTIAL GEAR OIL: R180A : In-
spection ...................................................................
24
Revision: 2010 May2011 QX56

GENERAL MAINTENANCEMA-5
< PERIODIC MAINTENANCE >
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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).
Seats Check seat position controls such as seat adjusters, seatback recliner, etc. to
make sure they operate smoothly and that all latches lock securely in every po-
sition. Check that the head restrains 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 seatbacks. —
Seat belts Check 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-34
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. —
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-7
BR-15
Parking brake
Check that the lever or pedal has the proper travel and make sure that the ve-
hicle is held securely on a fairly steep hill when only the parking brake is ap-
plied. PB-3
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
selector lever in the P (Park) position without applying any 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. MA-12
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. MA-16
Brake fluid levels
Make sure that the brake fluid level is between the “MAX” and “MIN” lines on the
reservoir(s). MA-28
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 re-
quire frequent checks of the battery fluid level. PG-159
Engine drive belts
Make sure that no belt is frayed, worn, cracked or oily. MA-12
Engine oil levelCheck the level on the oil level gauge after parking the vehicle on a level spot
and turning off the engine. LU-7
Power steering fluid
level and linesCheck the level on the dipstick with the engine off. Check the lines for improper
attachment, leaks, cracks, etc.
MA-32
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-21
Underbody
The underbody is frequently exposed to corrosive substances such as those
used on icy roads or to control dust. It is very important to remove these sub-
stances, otherwise rust will form on the floor pan, frame, fuel lines and around
the exhaust system. At the end of winter, the underbody should be thoroughly
flushed with plain water, being careful to clean those areas where mud and dirt
can easily accumulate. —
Fluid leaks Check under the vehicle for fuel, oil, water or other fluid leaks after the vehicle
has been parked for a while. Water dripping from the air conditioner after use is
normal. If you should notice any leaks or gasoline fumes are evident, check for
the cause and correct it immediately. —
Revision: 2010 May2011 QX56

MA-12
< PERIODIC MAINTENANCE >
ENGINE MAINTENANCE
ENGINE MAINTENANCE
DRIVE BELTS
DRIVE BELTS : Exploded ViewINFOID:0000000006394835
DRIVE BELTS : CheckingINFOID:0000000006394836
WARNING:
Be sure to perform the these steps when engine is stopped.
 Check that the indicator (C) (notch on fixed side) of each auto-tensioner is within the possible use range (A).
NOTE:
 Check the each auto-tensioners indication when the engine is cold.
 When new drive belts is installed, the indicator (notch on fixed side) should be within the range (B) in the\
figure.
 Visually check all drive belts for wear, damage or cracks.
 If the indicator (notch on fixed side) is out of the possible use range or drive belts are damaged, replace drive
belts.
DRIVE BELTS : Tension AdjustmentINFOID:0000000006394837
Refer to EM-132, "Drive Belts".
ENGINE COOLANT
ENGINE COOLANT : InspectionINFOID:0000000006394844
LEVEL
1. Drive belt 2. Power steering oil pump pulley 3. Alternator pulley
4. Crankshaft pulley 5. A/C compressor 6. Idler pulley
7. Cooling fan pulley 8. Water pump pulley 9. Drive belt auto-tensioner
A. Possible use range B. Range when new drive belt is in-
stalledC. Indicator
D. View D
JPBIA3264ZZ
Revision: 2010 May2011 QX56

ENGINE MAINTENANCEMA-15
< PERIODIC MAINTENANCE >
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12. Check cooling system for leakage with engine running.
13. Warm up the engine, and check for sound of engine coolant flow while running engine from idle up to
3,000 rpm with heater temperature controller se t at several position between “COOL” and “WARM”.
 Sound may be noticeable at heater unit.
14. Repeat step 13 three times.
15. If sound is heard, bleed air from cooling system by repeating step 4, and steps from 6 to 14 until engine
coolant level no longer drops.
ENGINE COOLANT : FlushingINFOID:0000000006394847
1. Install reservoir tank if removed, and radiator drain plug. CAUTION:
Be sure to clean drain plug and install with new O-ring. Refer to CO-13, "
Exploded View".
If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-107, "
Disassem-
bly and Assembly".
2. Remove air relief plug (1) on heater hose.
3. Fill radiator and reservoir tank with water until water spills from the air relief holes, then close air relief
plugs with clamp. Fill radiator and rese rvoir tank with water and reinstall caps.
4. Run the engine and warm it up to normal operating temperature.
5. Rev the engine two or three times under no-load.
6. Stop the engine and wait until it cools down.
7. Drain water from the system. Refer to MA-13, "
ENGINE COOLANT : Draining".
8. Repeat steps 1 through 7 until clear water begins to drain from radiator.
RESERVOIR TANK CAP
RESERVOIR TANK CAP : InspectionINFOID:0000000006394848
 Check valve seat of reservoir tank cap.
- Check if valve seat (A) is swollen to the extent that the edge of the metal plunger (B) cannot be seen when watching it vertically from
the top.
- Check if valve seat has no soil and damage. : 1.96 N·m (0.2 kg-m, 17 in-lb)
2. Engine cover
: Vehicle front
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Revision: 2010 May2011 QX56

ENGINE MAINTENANCEMA-17
< PERIODIC MAINTENANCE >
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FUEL LINES : InspectionINFOID:0000000006394850
 Inspect fuel lines, fuel filler cap and fuel tank for improper attach-
ment, leakage, cracks, damage, loose connections, chafing or
deterioration.
 If necessary, repair or replace damaged parts.
AIR CLEANER FILTER
AIR CLEANER FILTER : Removal and InstallationINFOID:0000000006394838
REMOVAL
NOTE:
 The viscous paper type filter does not need cleaning between replacement intervals.
 Replace the air filter as necessary for periodic maintenance. Refer to MA-6, "
Introduction of Periodic Mainte-
nance".
1. Unhook clips, and lift air cleaner case (upper).
2. Remove air cleaner filter from air cleaner case.
INSTALLATION
Install is the reverse order of removal.
ENGINE OIL
ENGINE OIL : DrainingINFOID:0000000006394841
WARNING:
 Be careful not to burn yourself, as th e engine and engine oil may be hot.
 Prolonged and repeated contact with used engine oil may cau se skin cancer; try to avoid direct skin
contact with used oil. If skin contact is made, w ash thoroughly with soap or hand cleaner as soon as
possible.
1. Warm up the engine, and check for any oil leaks.
2. Stop the engine and wait for at least 10 minutes.
3. Remove drain plug and oil filler cap to drain the old oil.
ENGINE OIL : RefillingINFOID:0000000006394842
1. Install drain plug with new washer. CAUTION:
Be sure to clean drain plug and install with new washer.
2. Refill with new engine oil. Engine oil specificat ion and viscosity:
Refer to MA-10, "
Fluids and Lubricants".
CAUTION:
 The refill capacity depends on the engine oi l temperature and drain time. Use these specifica-
tions for reference only.
 Always use oil level gauge to determine the proper amount of engine oil in engine.
A : Engine
B : Fuel line
C : Fuel tank
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Tightening torque : Refer to EM-54, "Exploded View".
Engine oil capacity : Refer to LU-17, "
Periodical Maintenance Specification".
Revision: 2010 May2011 QX56

MA-18
< PERIODIC MAINTENANCE >
ENGINE MAINTENANCE
3. Warm up the engine and check area around drain plug and oil filter for engine oil leakage.
4. Stop the engine and wait for 10 minutes.
5. Check the engine oil level. Refer to LU-7, "
Inspection".
OIL FILTER
OIL FILTER : Removal and InstallationINFOID:0000000006394843
REMOVAL
1. Remove front under cover.
2. Drain engine oil. Refer to MA-17, "
ENGINE OIL : Draining".
3. Remove oil filter using oil filter wrench [SST: KV10115801 (J- 38956)].
WARNING:
Be careful not to burn yourself, as the engine and engine oil
may be hot.
CAUTION:
 The oil filter is equipped with a pressure relief valve.
 Use Genuine NISSAN oil filter or equivalent.
 When removing, prepare a sh op cloth to absorb any
engine oil leaks or spills.
 Do not allow engine oil to adhere to the drive belts.
 Completely wipe off any engi ne oil that adheres to the
engine and the vehicle.
INSTALLATION
1. Remove foreign materials adhering to the oil filter seal mating surface.
2. Apply clean engine oil to the oil f ilter seal circumference of the
new oil filter as shown.
3. Screw on the oil filter manually until it touches the installation
surface, then tighten it by 2/3 turn as shown. Or tighten to speci-
fication.
4. Refill engine with new engine oil. Refer to MA-17, "
ENGINE OIL : Refilling".
5. Inspect engine for oil leaks. Refer to LU-7, "
Inspection".
6. Install front under cover.
SPARK PLUG
WBIA0388E
SMA010
Oil filter : 17.7 N·m (1.8 kg-m, 13 ft-lb)
SMA229B
Revision: 2010 May2011 QX56