check engine INFINITI QX56 2008 Factory Service Manual

LU-10
< ON-VEHICLE MAINTENANCE >
ENGINE OIL
Unit: (US qt, Imp qt)
CAUTION:
• The refill capacity depends on the engine oil temperature and drain time. Use these specifica-
tions for reference only.
• Always use the oil level gauge to determine when the proper amount of engine oil is in the engine.
8. Warm up engine and check area around drain plug and oil filter for oil leakage.
9. Stop engine and wait for 10 minutes.
10. Check engine oil level. Refer to LU-8, "
Inspection".
Drain and refill With 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: March 2010 2008 QX56

OIL FILTERLU-11
< ON-VEHICLE MAINTENANCE >
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OIL FILTER
Removal and InstallationINFOID:0000000001538846
REMOVAL
1. Remove the engine front undercover using power tool.
2. Remove the oil filter using Tool.
CAUTION:
• The oil filter is provided with a relief valve.Use Genuine NISSAN oil filter or equivalent.
• Be careful not to get burned when the engine and engine
oil are hot.
• When removing, prepare a s hop cloth to absorb any
engine oil leakage or spillage.
• Do not allow engine oil to adhere to the drive belts.
• Completely wipe off any engine oil that adheres to the engine and the vehicle.
INSTALLATION
1. Remove foreign materials adhering to the oil filter installation surface.
2. Apply engine oil to the oil seal circumference of the new oil filter.
3. Screw the oil filter manually until it touches the installation sur-
face, then tighten it by 2/3 turn. Or tighten to specification.
4. Inspect the engine for oil leakage. Follow the "INSPECTION AFTER INSTALLATION" procedure.
5. Install the engine front undercover using power tool.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level. Refer to LU-8, "Inspection".
2. Start the engine and check for engine oil leakage.
3. Stop the engine and wait for 10 minutes.
4. Check the engine oil level and add engine oil as required. Tool number : KV10115801 (J-38956)
WBIA0388E
SMA010
Oil filter : 17.7 N·m (1.8 kg-m, 13 ft-lb)
SMA229B
Revision: March 2010
2008 QX56

LU-12
< ON-VEHICLE REPAIR >
OIL COOLER
ON-VEHICLE REPAIR
OIL COOLER
Removal and InstallationINFOID:0000000001538847
WARNING:
Be careful not to burn yourself, as the engine oil and engine coolant are hot.
REMOVAL
1. Remove engine front undercover using power tool.
2. Disconnect water hoses, pinching hoses near oil cooler to prevent engine coolant from spilling.
CAUTION:
Do not spill engine coolant on the drive belt.
3. Remove oil filter. Refer to LU-11, "
Removal and Installation".
CAUTION:
Do not spill engine oi l on the drive belts.
4. Remove connector bolt, and remove oil cooler.
INSPECTION AFTER REMOVAL
Oil Cooler
Check oil cooler for cracks. Check oil cooler for clogging by blowing compressed air through engine coolant
inlet. If necessary, replace oil cooler assembly.
Relief Valve
Inspect relief valve for movement, cracks and breaks by pushing the ball. If replacement is necessary, remove
the valve by prying it out using a suitable tool. Install a new valve in place by tapping it.
INSTALLATION
WBIA0790E
1. Oil pan 2. Water hose 3. Water pipe
4. Water hose 5. Connector bolt 6. Oil filter
7. Oil cooler 8. O-ring 9. Relief valve
10. Water hose 11. Connector pipe 12. Gasket
A. To thermostat housing B. Refer to LU-11
C. To cylinder block
Revision: March 2010 2008 QX56

OIL COOLERLU-13
< ON-VEHICLE REPAIR >
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Installation is in the reverse order of removal, paying attention to the following:
• Confirm that no foreign objects are adhering to the sealing sur-
faces of the oil cooler or oil pan.
• Tighten the connecting bolt after aligning the stopper on the oil pan side with protrusion of the oil cooler.
INSPECTION AFTER INSTALLATION
1. Check levels and add engine oil and engine coolant. Refer to LU-8, "Inspection" and CO-10, "Inspection".
2. Start the engine, and check for leaks of engine oil and engine coolant.
3. Stop the engine and wait for 10 minutes.
4. Check engine oil level and engine coolant level again.
KBIA2500E
Revision: March 2010 2008 QX56

LU-14
< ON-VEHICLE REPAIR >
OIL PUMP
OIL PUMP
Removal and InstallationINFOID:0000000001538848
REMOVAL
1. Remove front cover. Refer to EM-44, "Components".
2. Remove the oil pump drive spacer.
3. Remove the oil pump.
INSTALLATION
Installation is in the reverse order of removal, paying attention of the following:
• When inserting the oil pump drive spacer, align the crankshaft key and the flat face of the inner rotor.
• If they are not aligned, rotate the oil pump inner rotor by hand.
• Make sure that the each part is aligned and tap lightly until it
reaches the end.
INSPECTION AFTER INSTALLATION
• Start the engine, and check for leaks of engine oil.
• Stop engine and wait 10 minutes.
• Check level and add engine oil as required. Refer to LU-8
.
WBIA0415E
1. Oil pump body2. Outer rotor 3. Inner rotor
4. Oil pump cover 5. Oil pump drive spacer 6. Regulator valve
7. Regulator spring 8. Regulator plug
KBIA2512E
KBIA2490E
Revision: March 2010 2008 QX56

LU-16
< DISASSEMBLY AND ASSEMBLY >
OIL PUMP
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.
• (Clearance) = D
1 (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.
ASSEMBLY
Installation is in the reverse order of removal.
NOTE:
Install the inner rotor and outer rotor with the punched marks on the
oil pump cover side.
PBIC0142E
Inner rotor to brazed portion of housing
clearance
: 0.045 - 0.091 mm (0.0018 - 0.0036 in)
Regulator valve to oil pump cover
: 0.040 - 0.097 mm (0.0016 - 0.0038 in)
PBIC0143E
PBIC0144E
Revision: March 2010 2008 QX56

MA-1
MAINTENANCE
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CONTENTS
MAINTENANCE
PREPARATION ....
........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
PREPARATION ...................................................4
Special Service Tool ........................................... ......4
Commercial Service Tool ..........................................4
ON-VEHICLE MAINTENANCE .....................6
GENERAL MAINTE NANCE ........................... .....6
General Maintenance .......................................... ......6
PERIODIC MAINTENANCE ................................8
Introduction of Periodic Maintenance .................. ......8
Maintenance for Off-road Driving (4WD only) ...........8
Schedule 1 ................................................................8
Schedule 2 ..............................................................10
RECOMMENDED FLUIDS AND LUBRI-
CANTS ................................................................
12
Fluids and Lubricants .......................................... ....12
Engine Oil Recommendation ..................................12
Anti-Freeze Coolant Mixture Ratio ..........................13
ENGINE MAINTENANCE ...................................14
Checking Drive Belts ........................................... ....14
Changing Engine Coolant .................................... ....14
Checking Fuel Line ..................................................17
Changing Fuel Filter ................................................17
Changing Engine Air Cleaner Filter .........................17
Changing Engine Oil ................................................18
Changing Oil Filter ...................................................18
Changing Spark Plugs .............................................20
Checking EVAP Vapor Line .....................................21
CHASSIS AND BODY MAINTENANCE ...........22
Changing In-cabin Microfilter ............................... ....22
Checking Exhaust System .......................................23
Checking Automatic Transmission Fluid (ATF) .......23
Changing Automatic Transmission Fluid (ATF) .......25
Changing Transfer Fluid ..........................................25
Checking Transfer Fluid ..........................................26
Checking Propeller Shaft .........................................26
Checking Final Drive Oil ..........................................26
Changing Final Drive Oil ..........................................27
Adjustment ...............................................................27
Tire Rotation ............................................................29
Checking Brake Fluid Level and Leaks ...................29
CheckingBrake Line and Cables .............................30
Checking Disc Brake ...............................................30
Checking Steering Gear and Linkage ......................30
Checking Power Steering Fluid and Line ................31
Checking Axle and Suspension Parts .....................31
Lubricating Locks, Hinges and Hood Latches .........33
Checking Seat Belts, Buckles, Retractors, An-
chors and Adjusters ............................................. ....
33
Revision: March 2010 2008 QX56

MA-4
< PREPARATION >
PREPARATION
PREPARATION
Special Service ToolINFOID:0000000006054112
The actual shapes of the Kent-Moore tools may differ from those of the special service tools illustrated here.
Commercial Service ToolINFOID:0000000001606162
Tool number
(Kent-Moore No.)
Tool name Description
ST25051001
(J-25695-1)
Oil pressure gauge Measuring oil pressure
Maximum measuring range:
2,452 kPa (25 kg/cm
2, 356 psi)
ST25052000
(J-25695-2)
Hose Adapting oil pressure gauge to cylinder block
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
—
(J-24460-92)
Radiator pressure test adapter set Adapting radiator pressure tester to reservoir
filler neck.
S-NT050
S-NT559
NT375
WBIA0539E
LMA053
AWBIA0891ZZ
Revision: March 2010
2008 QX56

MA-6
< ON-VEHICLE MAINTENANCE >
GENERAL MAINTENANCE
ON-VEHICLE MAINTENANCE
GENERAL MAINTENANCE
General MaintenanceINFOID:0000000001606163
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 at least once a month and always prior to a
long distance trip. Adjust to the specified pressure if necessary. Check carefully
for damage, cuts or excessive wear. —
Wheel lug nuts When checking the tires, make sure no nuts are missing, and check for any loose
nuts. Tighten if necessary. WT-48, "
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. —
Tire rotation Tires should be rotated every 12,000 km (7,500 miles). WT-48, "
Rotation"
Transmitter compo-
nents in tire pressure
monitoring system
(TPMS)Replace grommet seat, valve core and cap of the transmitter on TPMS every tire
replacement by reaching wear limit of tire.
WT-49, "
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-46, "Adjustment",
FSU-7, "
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
hatch. 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-33, "
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-110, "HEADLAMP :
Aiming Adjustment"
Item
Reference page
Warning lamps and
buzzers/chimes Make sure that all warning lamps and buzzers/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. 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: March 2010
2008 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. SB-11, "Seat Belt Inspec-
tion", MA-33, "Checking
Seat Belts, Buckles, Re-
tractors, Anchors and
Adjusters"
Accelerator pedal
Check the pedal for smooth operation. 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. Keep the floor
mats away from the pedal. BR-15, "
Inspection and
Adjustment", BR-10, "In-
spection"
Parking brake
Check that the parking brake control has the proper travel and make sure that
the vehicle is held securely on a fairly steep hill when only the parking brake is
applied. PB-5, "On-Vehicle Ser-
vice"
Automatic transmis-
sion “Park” mecha-
nismOn a fairly steep hill check that the vehicle is held securely with the shift selector
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. —
Radiator and hoses Check 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
reservoirs MA-29
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-14
Engine oil levelCheck the level on the dipstick after parking the vehicle on a level spot and turn-
ing off the engine. —
Power steering fluid
level and lines Check the level on the reservoir with the engine off. Check the lines for improper
attachment, leaks, cracks, etc.
MA-31
Automatic transmis-
sion fluid levelCheck the level on the dipstick after putting the shift selector in “P” with the en-
gine idling.
MA-23
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-23
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: March 2010
2008 QX56