check oil INFINITI QX56 2006 Factory Service Manual

CHASSIS AND BODY MAINTENANCEMA-25
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2. Remove the drain plug and gasket to drain the transfer fluid as
shown.
3. Install the new gasket on the drain plug and install the drain plug in the transfer. Tighten the drain plug to specification.
CAUTION:
Do not reuse the gasket.
FILLING
1. Remove the filler plug and gasket.
2. Fill with new specified fluid until the fluid level reaches the spec-ified limit near the filler plug mounting hole as shown.
CAUTION:
Carefully fill the transfer with fluid. Filling should take
approximately three minutes.
3. Leave the vehicle for three minutes and then check the fluid level again as shown.
4. Install the new gasket on the filler plug and install the filler plug in the transfer. Tighten the filler plug to specification.
CAUTION:
Do not reuse the gasket.
Checking Transfer FluidELS001H1
FLUID LEAKAGE AND FLUID LEVEL
1. Check for any fluid leaks from the transfer assembly or around it and correct as necessary.
2. Remove the filler plug to check the fluid level at the filler plugmounting hole as shown.
CAUTION:
Do not start the engine while checking the fluid level.
3. Install the new gasket on the filler plug and install the filler plug in the transfer. Tighten the filler plug to specification.
CAUTION:
Do not reuse the gasket.
Checking Propeller ShaftELS001C5
Check the front and rear propeller shafts for damage, dents, and cracks. Check the joints for looseness and
any damage. Repair or replace as necessary.
Checking Final Drive OilELS001H3
1. Remove the filler plug. Drain plug : Refer to
TF-146, "
COMPONENTS" .
SMA444B
Fluid capacity and grade : Refer to MA-11, "Fluids
and Lubricants" .
Filler plug : Refer to TF-146, "
COMPONENTS" .
SMA439B
Filler plug : Refer to TF-146, "COMPONENTS" .
SMA439B

MA-26
CHASSIS AND BODY MAINTENANCE
Revision: November 20092006 QX56
2. Check the oil level as shown. Add the specified oil as necessary.
NOTE:
Rear final drive shown, front final drive similar
3. Install the filler plug and tighten to specification.
Changing Final Drive OilELS001C7
1. Remove the filler plug.
2. Remove the drain plug and drain the final drive oil.
3. Apply sealant to the drain plug threads.

Use High Performance Thread Sealant or equivalent. Refer to GI-46, "Recommended Chemical Prod-
ucts and Sealants" .
4. Install the drain plug and tighten to specification.
5. Refill the final drive with new specified oil.
6. Check the oil level.
NOTE:
Rear final drive shown, front final drive similar
7. Install the filler plug and tighten to specification.
Balancing WheelsELS001H4
REMOVAL
1. Using releasing agent, remove double-faced adhesive tape from the wheel. CAUTION:

Be careful not to scratch the wheel during removal.

After removing double-faced adhesive tape, wipe clean traces of releasing agent from the
wheel.
WHEEL BALANCE ADJUSTMENT

If a tire balance machine has adhesion balance weight mode settings and drive-in weight mode setting,
select and adjust a drive-in weight mode suitable for wheels.
1. Set wheel on wheel balancer using the center hole as a guide. Start the tire balance machine.
2. When inner and outer imbalance values are shown on the wheel balancer indicator, multiply outer imbal- ance value by 1.6 to determine balance weight that should be used. Select the outer balance weight withOil grade and viscosity : Refer to
MA-11, "
Fluids and
Lubricants" .
LLIA0068E
Filler plug : Refer to FFD-14, "COMPONENTS" (FFD), RFD-15, "COMPONENTS" (RFD).
Drain plug : Refer to FFD-14, "
COMPONENTS" (FFD), RFD-15, "COMPONENTS"
(RFD).
Oil grade and capacity : Refer to MA-11, "
Fluids and Lubricants" .
LLIA0068E
Filler plug : Refer to FFD-14, "COMPONENTS" (FFD), RFD-15, "COMPONENTS" (RFD).

CHASSIS AND BODY MAINTENANCEMA-29
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CALIPER
Check the caliper for any leaks, repair as necessary.
PA D
Check the pads for wear or damage. Refer to BR-32, "Front Disc
Brake" , BR-33, "Rear Disc Brake" .
Checking Steering Gear and LinkageELS001CD
STEERING GEAR

Check the steering gear housing for looseness, damage and oil
leakage as shown.

Check the steering column connections for looseness.
STEERING LINKAGE

Check the ball joint, dust cover and other component parts for looseness, wear, damage, and grease leak-
age.
Checking Power Steering Fluid and LinesELS001CE
CHECKING FLUID LEVEL

Check the power steering fluid level with the engine off.

Check fluid level on reservoir. Use “HOT ” range at fluid tempera-
tures of 50 ° to 80 °C (122 ° to 176 °F). Use “COLD” range at fluid
temperatures of 0 ° to 30 °C (32 ° to 86 °F).
CAUTION:

Do not overfill.

Refer to MA-11, "Fluids and Lubricants" .
SMA922A
LMA051
SGIA0506E
LGIA0021E

MA-30
CHASSIS AND BODY MAINTENANCE
Revision: November 20092006 QX56
CHECKING LINES

Check lines for improper attachment, leaks, cracks, damage,
loose connections, chafing, and deterioration.
Checking Axle and Suspension PartsELS001CF
FRONT AND REAR AXLE AND SUSPENSION PARTS
Check front and rear axle and suspension parts for excessive play, cracks, wear or other damage.

Shake each wheel to check for excessive play.

Rotate each wheel to check for abnormal noise.

Check the axle and suspension nuts and bolts for looseness.

Check the strut and shock absorber for oil leakage or other damage.

Check the suspension ball joints for grease leakage and ball joint dust cover for cracks or other damage.
DRIVE SHAFT
Check the boots and drive shaft for cracks, wear, damage, and
grease leakage.
SGIA0506E
SMA525A
SFA901

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)PG-23
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All Signals, Main Signals, Selection From Menu
NOTE:

Perform monitoring of IPDM E/R data with the ignition switch ON. When the ignition switch is in ACC posi-
tion, display may not be correct.

(*1) This item is displayed, but does not function.
ACTIVE TEST
Operation Procedure
1. Touch “ACTIVE TEST” on “SELECT DIAG-MODE ” screen.
2. Touch item to be tested, and check operation.
3. Touch “START”.
4. Touch "STOP" while testing to stop the operation.
Item name CONSULT-II
screen display Display or unit Monitor item selection
Description
ALL
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
Motor fan request MOTOR FAN
REQ
1/2/3/4
X X X Signal status input from ECM
Compressor
request AC COMP REQ ON/OFF
X XX Signal status input from ECM
Parking, license,
and tail lamp
request TAIL & CLR REQ ON/OFF
X XX Signal status input from BCM
Headlamp low
beam request HL LO REQ ON/OFF
X XX Signal status input from BCM
Headlamp high
beam request HL HI REQ ON/OFF
X XX Signal status input from BCM
Front fog request FR FOG REQ ON/OFF X XX Signal status input from BCM
Front wiper
request FR WIP REQSTOP/1LOW/
LOW/HI
X X
X Signal status input from BCM
Wiper auto stop WIP AUTO
STOPACT P/STOP P X X
X Output status of IPDM E/R
Wiper protection WIP PROT OFF/Block X XX Control status of IPDM E/R
Starter request ST RLY REQ ON/OFF XX
Status of input signal
NOTE
Ignition relay
status IGN RLY ON/OFF
X XXIgnition relay status monitored
with IPDM E/R
Rear defogger
request RR DEF REQ ON/OFF
X XX Signal status input from BCM
Oil pressure
switch OIL P SW (*1) OPEN/CLOSE X
XSignal status input from IPDM
E/R
Hood switch HOOD SW OFF XSignal status input from IPDM
E/R
Theft warning
horn request THFT HRN REQ ON/OFF
XX Signal status input from BCM
Horn chirp HORN CHIRP ON/OFF XX Output status of IPDM E/R
Daytime running
lamp request DTRL REQ ON/OFF
XX Signal status input from BCM
Test nameCONSULT-II screen display Description
Rear defogger output REAR DEFOGGER With a certain ON-OFF operation, the rear defogger relay can be oper-
ated.
Front wiper (HI, LO) output FRONT WIPER With a certain operation (OFF, HI ON, LO ON), the front wiper relay
(Lo, Hi) can be operated.
Cooling fan output MOTOR FAN With a certain operation (1, 2, 3, 4), the cooling fan can be operated.

PS-1
POWER STEERING SYSTEM
G STEERING
CONTENTS
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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

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

STEERING WHEELPS-7
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STEERING WHEELPFP:48430
On-Vehicle Inspection and ServiceEGS000UC
CHECKING CONDITION OF INSTALLATION

Check installation condition of steering gear assembly, front suspension, axle and steering column.

Check if movement exists when steering wheel is moved up and down, to the left and right and to the axial
direction.

Check if the mounting nuts for steering gear assembly are loose.
Refer to PS-15, "
POWER STEERING GEAR AND LINKAGE" .
CHECKING STEERING WHEEL PLAY
1. Turn tires straight ahead, start engine, then turn steering wheel to the left and right lightly, and measure
steering wheel movement on the outer circumference when steering wheel is turned up to the point where
tires start moving.
CHECKING NEUTRAL POSITION ON STEERING WHEEL

Check neutral position on steering wheel after confirming that front wheel alignment is correct. Refer to
FSU-6, "
Front Wheel Alignment" .
1. Turn tires straight ahead, check if steering wheel is in the neutral position.
2. If it is not in the neutral position, remove steering wheel and reinstall it correctly.
3. If the neutral position cannot be attained by repositioning the steering wheel two teeth or less on steering stem, loosen tie-rod lock nuts of steering outer sockets, then adjust tie-rods by the same amount in the
opposite direction.
CHECKING STEERING WHEEL TURNING FORCE
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring power steering fluid up to operating temperature of 60 ° – 80° C (140 ° – 176° F).
4. Tires need to be inflated to specified pressure. Refer to WT-38, "
Tire" .
5. Check steering wheel turning force using Tool when steering wheel has been turned 360 ° from the neutral position.
6. If steering wheel turning force is out of specification, inspect the following:

Steering column. Refer to PS-11, "INSPECTION AFTER
REMOVAL" .

Power steering oil pump. Refer to PS-21, "CHECKING
RELIEF OIL PRESSURE" .
7. If steering column and power steering oil pump meet specifications, replace steering gear. Refer to PS-15,
"Removal and Installation" .
End play of the axial direction for steering wheel : 0 mm (0 in)
LGIA0024E
Steering wheel play on the outer circumference : 0
− 35 mm (0 − 1.38 in)
Tool number : J-44372
Steering wheel
turning force : 39 N (4 kg-f, 9 lb-f) or less
WGIA0035E

PS-16
POWER STEERING GEAR AND LINKAGE
Revision: November 20092006 QX56
8. Remove oil piping (high pressure side and low pressure side)
from steering gear assembly, then drain fluid from piping.
9. Remove lower joint mounting bolt of lower joint shaft.
10. Remove nuts of steering gear assembly using power tool, then remove bolts and steering gear assembly.
INSTALLATION
Installation is in the reverse order of removal.

After removing/installing or replacing steering components, check wheel alignment. Refer to FSU-6,
"Front Wheel Alignment" .

After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-62,
"Adjustment of Steering Angle Sensor Neutral Position" .

With steering wheel in straight ahead position, make sure slit of
lower joint fits with the projection on rear cover cap, while check-
ing that mark on steering gear assembly aligns with mark on
rear cover cap

After installation, bleed the air from the steering hydraulic system. Refer to PS-6, "Air Bleeding Hydraulic
System" .
LGIA0032E
LGIA0029E
LGIA0024E
SST491C

POWER STEERING GEAR AND LINKAGEPS-17
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INSPECTION AFTER INSTALLATION
Check if steering wheel turns smoothly when it is turned several times fully to the left and right lock positions.
Disassembly and AssemblyEGS00124
CAUTION:

Secure steering gear assembly with a vise, using copper plates or something similar to prevent it
from being damaged. Do not grip cylinder with a vise.

Before performing disassembly, clean steering gear assembly with kerosene. Be careful not to
bring any kerosene into contact with the discharge and return port connectors.
DISASSEMBLY
1. Remove cylinder tubes from gear housing assembly.
2. Loosen lock nuts of outer sockets, and remove outer sockets.
3. Remove boot clamps of the small diameter side and the large diameter side, then remove boot.
CAUTION:
When removing boots, be careful not to damage inner socket and gear housing assembly. If they
are damaged, change them to avoid oil leaks.
4. Remove inner sockets.
1. Boot clamp 2. Inner socket3. Boot
4. Boot clamp 5. Outer socket6. Cylinder tubes
7. Gear housing assembly 8. Connector
BGIA0008E