2006 INFINITI QX56 steering wheel

MA-1
MAINTENANCE
L MAINTENANCE
CONTENTS
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Revision: November 2009 2006 QX56
PRECAUTIONS .....................................................
..... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
PREPARATION ...................................................... ..... 4
Special Service Tools .......................................... ..... 4
Commercial Service Tool .................................... ..... 4
GENERAL MAINTENANCE .................................. ..... 5
General Maintenance .......................................... ..... 5
PERIODIC MAINTENANCE .................................. ..... 7
Introduction of Periodic Maintenance .................. ..... 7
Maintenance For Off-road Driving (4WD only) .... ..... 7
Schedule 1 .......................................................... ..... 7
EMISSION CONTROL SYSTEM MAINTE-
NANCE ............................................................. ..... 7
CHASSIS AND BODY MAINTENANCE .......... ..... 8
Schedule 2 .......................................................... ..... 9
EMISSION CONTROL SYSTEM MAINTE-
NANCE ............................................................. ..... 9
CHASSIS AND BODY MAINTENANCE .......... ... 10
RECOMMENDED FLUIDS AND LUBRICANTS ... ....11
Fluids and Lubricants .......................................... .... 11
SAE Viscosity Number ........................................ ... 12
GASOLINE ENGINE OIL ................................. ... 12
ANTI-FREEZE COOLANT MIXTURE RATIO .. ... 12
ENGINE MAINTENANCE ...................................... ... 13
Checking Drive Belts ........................................... ... 13
DRIVE BELT TENSION ................................... ... 13
Changing Engine Coolant ................................... ... 13
DRAINING ENGINE COOLANT ...................... ... 13
REFILLING ENGINE COOLANT ..................... ... 14
FLUSHING COOLING SYSTEM ...................... ... 15
Checking Fuel Lines ............................................ ... 16
Changing Fuel Filter ............................................ ... 16
Changing Engine Air Cleaner Filter ..................... ... 16
VISCOUS PAPER TYPE .................................. ... 16
Changing Engine Oil ........................................... ... 17
Changing Oil Filter .............................................. ... 17
REMOVAL ........................................................ ... 17
INSTALLATION ................................................ ... 17INSPECTION AFTER INSTALLATION .............
... 18
Changing Spark Plugs ......................................... ... 18
REMOVAL ........................................................ ... 19
INSPECTION AFTER REMOVAL .................... ... 19
INSTALLATION ................................................ ... 19
Checking EVAP Vapor Lines ............................... ... 20
CHASSIS AND BODY MAINTENANCE ................ ... 21
Changing In-cabin Microfilter ............................... ... 21
Checking Exhaust System ................................... ... 22
Checking Automatic Transmission Fluid (ATF) .... ... 22
Changing Automatic Transmission Fluid (ATF) ... ... 24
Changing Transfer Fluid ...................................... ... 24
DRAINING ........................................................ ... 24
FILLING ............................................................ ... 25
Checking Transfer Fluid ...................................... ... 25
FLUID LEAKAGE AND FLUID LEVEL ............. ... 25
Checking Propeller Shaft ..................................... ... 25
Checking Final Drive Oil ...................................... ... 25
Changing Final Drive Oil ...................................... ... 26
Balancing Wheels ................................................ ... 26
REMOVAL ........................................................ ... 26
WHEEL BALANCE ADJUSTMENT .................. ... 26
Tire Rotation ........................................................ ... 28
Checking Brake Fluid Level and Leaks ............... ... 28
Checking Brake Lines and Cables ...................... ... 28
Checking Disc Brake ........................................... ... 28
ROTOR ............................................................. ... 28
CALIPER .......................................................... ... 29
PAD .................................................................. ... 29
Checking Steering Gear and Linkage .................. ... 29
STEERING GEAR ............................................... 29
STEERING LINKAGE ......................................... 29
Checking Power Steering Fluid and Lines ........... ... 29
CHECKING FLUID LEVEL ............................... ... 29
CHECKING LINES ........................................... ... 30
Checking Axle and Suspension Parts ................. ... 30
FRONT AND REAR AXLE AND SUSPENSION
PARTS .............................................................. ... 30
DRIVE SHAFT .................................................. ... 30

GENERAL MAINTENANCEMA-5
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Revision: November 2009 2006 QX56
GENERAL MAINTENANCEPFP:00000
General MaintenanceELS001BI
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 their INFINITI dealers perform them.
OUTSIDE THE VEHICLE
The maintenance items listed here should be performed from 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-7, "
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-7, "
Rotation"
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
balancing may be needed. WT-6, "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
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 pri-
mary latch is released.
When driving in areas using road salt or other corrosive materials, check lubri-
cation frequently. MA-31, "
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. LT-29, "Aiming Adjust-
ment" for US, LT-46,
"Aiming Adjustment" for
Canada
Item Reference page
Warning lamps and
buzzers/chimes Make sure that all warning lamps and buzzers/chimes are operating properly.
DI-25, "
Electrical Com-
ponents Inspection"
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. PS-7, "
CHECKING
STEERING WHEEL
PLAY"
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
position. 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. —
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. SB-11, "
Seat Belt
Inspection", MA-32,
"Checking Seat Belts,
Buckles, Retractors,
Anchors and Adjusters"
Accelerator pedal
Check the pedal for smooth operation. Keep the floor mats away from the pedal. —

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPR-3
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Revision: November 2009 2006 QX56
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS001W4
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PR-4
(front)
PR-8 (rear)
PR-4 (front)
PR-8 (rear)
PR-4 (front)
PR-8 (rear)
FFD-6, "
NVH Troubleshooting Chart
"
RFD-7, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
"
RAX-4, "
NVH Troubleshooting Chart
"
FSU-4, "
NVH Troubleshooting Chart
"
RSU-5, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
PR-3, "
NVH Troubleshooting Chart
"
BR-5, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and suspected parts
Uneven rotation torque
Rotation imbalance
Excessive run out
Differential
Axle
Suspension
Tires
Road wheel
Drive shaft
Brakes
Steering
Symptom Noise
×××××××××××
Shake ×××××××
Vibration ××××××××

PS-1
POWER STEERING SYSTEM
G STEERING
CONTENTS
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SECTION
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PS
Revision: November 2009 2006 QX56
PRECAUTIONS .....................................................
..... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 2
Precautions for Steering System ......................... ..... 2
PREPARATION ...................................................... ..... 3
Special Service Tools (SST) ................................ ..... 3
Commercial Service Tools ................................... ..... 4
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ..... 5
NVH Troubleshooting Chart ................................ ..... 5
POWER STEERING FLUID ................................... ..... 6
Checking Fluid Level ........................................... ..... 6
Checking Fluid Leakage ...................................... ..... 6
Air Bleeding Hydraulic System ............................ ..... 6
STEERING WHEEL .................................................... 7 On-Vehicle Inspection and Service ..................... ..... 7
CHECKING CONDITION OF INSTALLATION . ..... 7
CHECKING STEERING WHEEL PLAY ........... ..... 7
CHECKING NEUTRAL POSITION ON STEER-
ING WHEEL ..................................................... ..... 7
CHECKING STEERING WHEEL TURNING
FORCE ............................................................. ..... 7
CHECKING FRONT WHEEL TURNING ANGLE ..... 8
Removal and Installation ..................................... ..... 8
REMOVAL ........................................................ ..... 8
INSTALLATION ................................................ ..... 8
TILT SYSTEM ............................................................. 9 Removal and Installation ..................................... ..... 9
TILT MOTOR AND TILT SENSOR ................... ..... 9
STEERING COLUMN ............................................ ... 10
Removal and Installation ..................................... ... 10
REMOVAL ........................................................ ... 10
INSPECTION AFTER REMOVAL .................... .... 11
INSTALLATION ................................................ .... 11INSPECTION AFTER INSTALLATION .............
... 12
Disassembly and Assembly ................................. ... 13
DISASSEMBLY ................................................ ... 13
ASSEMBLY ...................................................... ... 14
INSPECTION AFTER ASSEMBLY ................... ... 14
POWER STEERING GEAR AND LINKAGE ......... ... 15
Removal and Installation ..................................... ... 15
REMOVAL ........................................................ ... 15
INSTALLATION ................................................ ... 16
INSPECTION AFTER INSTALLATION ............. ... 17
Disassembly and Assembly ................................. ... 17
DISASSEMBLY ................................................ ... 17
INSPECTION AFTER DISASSEMBLY ............. ... 18
ASSEMBLY ...................................................... ... 19
POWER STEERING OIL PUMP ............................ ... 21
On-Vehicle Inspection and Service ...................... ... 21
CHECKING RELIEF OIL PRESSURE ............. ... 21
Removal and Installation ..................................... ... 21
REMOVAL ........................................................ ... 21
INSTALLATION ................................................ ... 21
Disassembly and Assembly ................................. ... 22
INSPECTION BEFORE DISASSEMBLY .......... ... 22
DISASSEMBLY ................................................ ... 22
INSPECTION AFTER DISASSEMBLY ............. ... 22
ASSEMBLY ...................................................... ... 22
HYDRAULIC LINE ................................................. ... 23
Removal and Installation ..................................... ... 23
SERVICE DATA AND SPECIFICATIONS (SDS) ... ... 25
Steering Wheel .................................................... ... 25
Steering Column .................................................. ... 25
Steering Outer Socket and Inner Socket ............. ... 26
Steering Gear ...................................................... ... 27
Oil Pump ................................................................. 27
Steering Fluid .......................................................... 27

PREPARATIONPS-3
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Revision: November 2009 2006 QX56
PREPARATIONPFP:00002
Special Service Tools (SST)EGS00121
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool nameDescription
ST3127 S000
(See J-25765-A)
Preload gauge
1. GG9103000
(J-25765-A)
Torque wrench
2. HT62940000
( — )
Socket adapter
3. HT62900000
( — )
Socket adapter Inspecting of pinion rotating torque and rota-
tional torque for ball joint
HT72520000
(J-25730-A)
Ball joint remover Removing steering outer socket
1. KV48105300-4 and 5295262U10
( — )
Connector A and O-ring
2. KV48105300-3 and 5295262U00
( — )
Eye-bolt and O-ring
3. KV48103500
(J-26357 and J-26357-10)
Pressure gauge and shut-off valve
4. KV48105300-1 and 5295262U00
( — )
Connector B and O-ring
5. KV48105300-2
( — )
Nut Measuring oil pump relief pressure
KV481J0010
(J-1859-A)
Steering wheel puller Removing steering wheel
KV481J0020
(J-42578)
Steering wheel puller legs Removing steering wheel
S-NT541
NT146
SGIA0427E
LHIA0043E
LHIA0044E

PS-4
PREPARATION
Revision: November 20092006 QX56
Commercial Service ToolsEGS00122
KV40107300
(— ) Crimping boot bands
—
(J-44372)
Spring gauge Measuring steering wheel turning force
Tool number
(Kent-Moore No.)
Tool name
Description
ZZA1229D
LST024
Tool name
Description
Power tool Removing nuts and bolts
PBIC0190E

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPS-5
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Revision: November 2009 2006 QX56
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEGS000U8
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PS-6PS-6PS-18PS-18PS-18PS-6PS-7PS-7
EM-13, "
Checking Drive Belts
"
PS-7PS-13PS-15PS-11PS-10PS-15

PR-3, "
NVH Troubleshooting Chart
"
FFD-6, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
"
FSU-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
"
BR-5, "
NVH Troubleshooting Chart
"
Possible cause and sus-
pected parts
Fluid level
Air in hydraulic system
Outer socket ball joint swinging force
Outer socket ball joint rotating torque
Outer socket ball joint end play
Steering fluid leakage
Steering wheel play
Steering gear rack sliding force
Drive belt looseness
Improper steering wheel
Improper installation or looseness of tilt lock lever
Mounting rubber deterioration
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
PROPELLER SHAFT
FRONT FINAL DRIVE
WHEEL HUB
SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
Symptom Noise
× × ××××× × × ××××××× ×
Shake ×××× ××××× ×
Vibration ××××× × ××× ×
Shimmy ××× × ×××× ×
Shudder × × ×××× ×

PS-6
POWER STEERING FLUID
Revision: November 20092006 QX56
POWER STEERING FLUIDPFP:KLF20
Checking Fluid LevelEGS000U9
Check power steering fluid level with engine off, referring to the scale
on reservoir tank.
Use HOT range for fluid temperatures of 50° – 80 °C (122 ° – 176° F).
Use COLD range for fluid temperatures of 0 ° – 30° C (32 ° – 86 °F).
CAUTION:

Do not overfill.

Do not reuse any used power steering fluid.

Recommended fluid is Genuine NISSAN PSF or equivalent.
Refer to MA-11, "
RECOMMENDED FLUIDS AND LUBRI-
CANTS" .
Checking Fluid LeakageEGS000UA
Check the hydraulic piping lines for improper attachment and for
leaks, cracks, damage, loose connections, chafing or deterioration.
1. Run engine until fluid temperature reaches 50 ° – 80 °C (122 ° –
176° F) in reservoir tank. Keep engine speed idle.
2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each “lock” position for five seconds to
check fluid leakage.
CAUTION:
Do not hold steering wheel in a locked position for more
than 10 seconds. (There is the possibility that oil pump may
be damaged.)
4. If fluid leakage at connections is noticed, then loosen flare nut and then retighten. Do not over tighten con- nector as this can damage O-ring, washer and connector.
5. If fluid leakage from oil pump is noticed, check oil pump. Refer to PS-21, "
POWER STEERING OIL
PUMP" .
6. Check steering gear boots for accumulation of fluid indicating a leak from the steering gear.
Air Bleeding Hydraulic SystemEGS000UB
Incomplete air bleeding causes the following. When this happens, bleed air again.

Air bubbles in reservoir tank.

Clicking noise in oil pump.

Excessive buzzing in oil pump.
NOTE:
When vehicle is stationary or while steering wheel is being turned slowly, some noise may be heard from
oil pump or gear. This noise is normal and does not affect any system.
1. Stop engine, and then turn steering wheel fully to right and left several times. CAUTION:
Do not allow steering fluid reservoir tank to go below the MIN level line. Check tank frequently and
add fluid as needed.
2. Run engine at idle speed. Turn steering wheel fully right and then fully left, hold for about three seconds. Then check for fluid leakage.
3. Repeat step 2 several times at about three second intervals. CAUTION:
Do not hold steering wheel in the locked position for more than 10 seconds. (There is the possibil-
ity that oil pump may be damaged.)
4. Check for air bubbles or cloudy fluid.
5. If air bubbles or cloudiness still exists, stop engine, perform steps 2 and 3 again until air bubbles or cloud- iness does not exist.
6. Stop engine, check fluid level.
LGIA0021E
SGIA0506E