2009 INFINITI QX56 4WD

WHEEL HUBFAX-7
< REMOVAL AND INSTALLATION >
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REMOVAL AND INSTALLATION
WHEEL HUB
Removal and InstallationINFOID:0000000005889823
REMOVAL
1. Remove wheel and tire using power tool.
2. Remove engine under cover using power tool.
3. Without disassembling the hydraulic lines, remove caliper torque member bolts using power tool. Then reposition brake caliper aside with wire. Refer to BR-31, "Removal and Installation of Brake Caliper and
Rotor".
NOTE:
Do not press brake pedal while brake caliper is removed.
4. Put alignment mark on disc rotor and wheel hub and bearing assembly, then remove disc rotor.
5. Remove wheel sensor. Refer to BRC-114, "Removal and Installation"
.
 Inspect the wheel sensor O-ring, replac e the wheel sensor assembly if damaged.
 Clean the wheel sensor hole and mounting surface with a suitable brake cleaner and clean lint-free shop rag. Be careful that dirt and debr is do not enter the axle bearing area.
 Apply a coat of suitable grease to t he wheel sensor O-ring and mounting hole.
CAUTION:
Do not pull on th e wheel sensor harness.
6. On 4WD models, remove drive shaft from steering knuckle. Refer to FAX-9, "Removal and Installation"
.
7. Remove wheel hub and bearing assembly bolts using power tool.
1. Disc rotor 2. Wheel hub and bearing assembly 3. Wheel stud
4. Splash guard 5. Steering knuckle Front
AWDIA0423GB
WDIA0044E
Revision: December 20092009 QX56

FSU-6
< ON-VEHICLE MAINTENANCE >
ON-VEHICLE SERVICE
ON-VEHICLE MAINTENANCE
ON-VEHICLE SERVICE
Front Suspension PartsINFOID:0000000003772269
Check front suspension parts for excessive play, cracks, wear and
other damage.
• Shake each front wheel to check for excessive play.If looseness is noted, inspect wheel bearing end play, then check
ball joint end play. Refer to FA X - 6 , "
On-Vehicle Inspection and Ser-
vice" and FSU-10, "Inspection".
• Make sure that the cotter pin is inserted (4WD only).
• Retighten all nuts and bolts to the specified torque.
• Check shock absorber for oil leakage and other damage.
• Check suspension ball joint for grease leakage and ball joint dust cover for cracks and other damage.
Front Wheel AlignmentINFOID:0000000003772270
PRELIMINARY INSPECTION
WARNING:
Always adjust the alignment with the vehicle on a flat surface.
NOTE:
If alignment is out of specificat ion, inspect and replace any damaged or worn suspension parts before making
any adjustments.
1. Check and adjust the wheel alignment with the vehicle under unladen conditions. “Unladen conditions”
means that the fuel, coolant, and lubricant are full; and that the spare tire, jack, hand tools and mats are in
their designated positions.
2. Check the tires for incorrect air pressure and excessive wear.
3. Check the wheels for run out and damage. Refer to WT-40, "
Inspection" .
4. Check the wheel bearing axial end play. Refer to FA X - 6 , "
On-Vehicle Inspection and Service" .
5. Check the shock absorbers for leaks or damage.
6. Check each mounting point of the suspension components for any excessive looseness or damage.
7. Check each link, arm, and the rear suspension member for any damage.
8. Check the vehicle height. Refer to FSU-24, "
Wheelarch Height (Unladen*1)" .
• Verify the level using Consult-III memory register 1103 and set to 0 ± 10 mm (0 ± 0.39 in) as necessary.
GENERAL INFORMATION AND RECOMMENDATIONS
1. A Four-Wheel Thrust Alignment should be performed.
• This type of alignment is recommended for any NISSAN vehicle.
• The four-wheel “thrust” process helps ensure that the vehicle is properly aligned and the steering wheel
is centered.
• The alignment machine itself should be ca pable of accepting any NISSAN vehicle.
• The alignment machine should be checked to ensure that it is level. Suspension component
torques : Refer to FSU-13,
"Component" . SMA525A
SFA392B
Revision: December 20092009 QX56

COIL SPRING AND SHOCK ABSORBERFSU-21
< DISASSEMBLY AND ASSEMBLY >
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DISASSEMBLY AND ASSEMBLY
COIL SPRING AN D SHOCK ABSORBER
Disassembly and AssemblyINFOID:0000000003772280
DISASSEMBLY
1. Set the shock absorber in a vise, then loosen (without removing)
the piston rod lock nut as shown.
CAUTION:
Do not remove piston rod lock nut at this time.
2. Compress the spring using tool until the shock absorber mount- ing insulator can be turned by hand.
WARNING:
Make sure that the pawls of the two tools are firmly hooked
on the spring. The spring compressors must be tightened
alternately and evenly so as not to tilt the spring.
3. Remove the piston rod lock nut. • Discard the piston rod lock nut, use a new nut for assembly.
INSPECTION AFTER DISASSEMBLY
Shock Absorber Assembly
• Check for smooth operation through a full stroke, both compression and extension.
• Check for oil leakage on welded or gland packing portions.
• Check piston rod for cracks, deformation or other damage and replace if necessary.
Mounting Insulator and Rubber Parts
Check cemented rubber-to-metal portion for separation or cracks. Check rubber parts for deterioration and
replace if necessary.
Coil Spring
• Check for cracks, deformation or other damage and replace if necessary.
• Check the free spring height.
ASSEMBLY
SSU002
SSU003
Front spring free height
2WD : 325.5 ± 3 mm (12.8 ± 0.1 in)
4WD : 335.0 ± 3 mm (13.2 ± 0.1 in)
Revision: December 20092009 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)FSU-23
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000003772281
Spring Free HeightINFOID:0000000003772282
Wheel Alignment (Unladen*1)INFOID:0000000003772283
*1: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions. Suspension type
Independent double wishbone coil over shock
Shock absorber type Double-acting hydraulic
Stabilizer Standard equipment
2WD325.5 ± 3 mm (12.8 ± 0.1 in)
4WD 335.0 ± 3 mm (13.2 ± 0.1 in)
Drive type 2WD 4WD
Camber*6
Degree minute (decimal degree) Minimum
-0° 51 ′ (-0.85 °)- 0° 33 ′ (-0.55 °)
Nominal -0° 6 ′ (-0.10 °)0 ° 12 ′ (0.20 °)
Maximum 0° 39 ′ (0.65 °)0 ° 57 ′ (0.95 °)
Cross camber 0° 45 ′ (0.75 °) or less 0 ° 45′ (0.75 °) or less
Caster
Degree minute (decimal degree) Minimum
3° 15 ′ (3.25 °)2 ° 45 ′ (2.75 °)
Nominal 4° 0 ′ (4.00 °)3 ° 30 ′ (3.50 °)
Maximum 4° 45 ′ (4.75 °)4 ° 15 ′ (4.25 °)
Cross caster 0° 45 ′ (0.75 °) or less 0
° 45 ′ (0
.75°) or less
Kingpin inclination
Degree minute (decimal degree) 13
° 32 ′ (13.53 °)1 3° 13 ′ (13.22 °)
Total toe-in Distance (A
− B) Minimum
1.8 mm (0.07 in) 1.8 mm (0.07 in)
Nominal 2.8 mm (0.11 in) 2.8 mm (0.11 in)
Maximum 3.8 mm (0.15 in) 3.8 mm (0.15 in)
Angle (left side or right side)
Degree minute (decimal degree) Minimum
0° 3 ′ (0.05 °)0 ° 3 ′ (0.05 °)
Nominal 0° 5 ′ (0.08 °)0 ° 5 ′ (0.08 °)
Maximum 0° 7 ′ (0.12 °)0 ° 7 ′ (0.12 °)
Wheel turning angle
(full turn) Inside
Degree minute (decimal degree)
34
° 31 ′– 38 ° 31 ′*2
(34.52 °– 38.52° ) 34
° 44 ′– 38° 44′*4
(34.73 °– 38.73 °)
Ou t

side
Degree minute (decimal degree) 30
° 59 ′– 34 ° 59 ′*3
(30.98 °– 34.98° ) 30
° 29 ′– 34° 29′*5
(30.48 °– 34.48 °)
SFA234AC
Revision: December 20092009 QX56

FSU-24
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
*2: Target value 37° 31 ′ (37.52 °)
*3: Target value 33 ° 59 ′ (33.98 °)
*4: Target value 37 ° 44 ′ (37.73 °)
*5: Target value 33 ° 29 ′ (33.48 °)
*6 Some vehicles may not be equipped with straight (non-adjustable) lower link bolts and washers. In order to adjust camber and caster
on these vehicles, first replace the lower link bolts and washers with adjustable (cam) bolts and washers
Ball JointINFOID:0000000003772284
*1 Measure at cotter pin hole
*2 Measure at groove
Wheelarch Height (Unladen*1)INFOID:0000000003772285
Unit: mm (in)
*1: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions.
*2: Verify the vehicle height. If vehicle height is not within ± 10 mm (0.39 in) of the specification, perform the control unit initialization pro-
cedure. Refer to SCS-7, "
CONSULT-III Function".
Swinging force “A”
Upper ball joint
8.1 – 103.2 N (0.8 – 10.5 kg-f, 1.8 – 23.2 lb-f) *1
Lower ball joint 11.4 – 145.5 N (1.1 – 14.8 kg-f, 2.5 – 32.7 lb-f) *2
Turning torque “B” 0.5 - 6.4 N·m (0.05 - 0.65 kg-m, 4 - 57 in-lb)
Vertical end play “C” 0 mm (0 in)
SFA858AWEIA0076E
Suspension type
Air leveling*2
Applied model2WD4WD
Front wheelarch height (Hf) 920
(36.22) 937
(36.89)
Rear wheelarch height (Hr) 917
(36.10) 937
(36.89)
LEIA0085E
Revision: December 20092009 QX56

ABBREVIATIONSGI-13
< HOW TO USE THIS MANUAL >
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Abbreviation ListINFOID:0000000003771185
The following ABBREVIATIONS are used:
ABBREVIATION DESCRIPTION
A/C Air Conditioner
A/T Automatic Transaxle/Transmission
ATF Automatic Transmission Fluid
D
1Drive range 1[First Gear (1 GR)]
D
2Drive range 2 [Second Gear (2 GR)]
D
3Drive range 3 [Third Gear (3 GR)]
D
4Drive range 4 [Fourth Gear (4 GR)]
FR, RR Front, Rear LH, RH Left-Hand, Right-Hand M/T Manual Transaxle/Transmission
OD Overdrive
P/S Power Steering
SAE Society of Automotive Engineers, Inc.
SDS Service Data and Specifications
SST Special Service Tools
2WD 2-Wheel Drive
4WD 4-Wheel Drive
2
22nd range [Second Gear (2 GR)]
2
12nd range [First Gear (1 GR)]
1
21st range [Second Gear (2 GR)]
1
11st range [First Gear (1 GR)]
Revision: December 20092009 QX56

GI-20
< FEATURES OF NEW MODEL >
IDENTIFICATION INFORMATION
FEATURES OF NEW MODEL
IDENTIFICATION INFORMATION
Model VariationINFOID:0000000003771189
Prefix and suffix designations:
Drive Type Body Engine Transmission Destination GradeModel
2WD Wagon VK56DE RE5R05A (5A/T) U.S.A. QX56 JPKALVN-EUA
4WD Wagon VK56DE RE5R05A (5A/T) U.S.A.
QX56JPKWLVN-EUA
Canada JPKWLVN-ENA
Position Character Qualifier Definition
1 J Body type J: Wagon
2 PK Engine PK: VK56DE
3
4AA xle A: 2WD
W: 4WD
5LD riv e L : L H
6 V Grade V: QX56
7 N Transmission N: RE5R05A (5A/T)
8 I85 Model I85: 2009 QX56
9
10 11 E I n t a k e E : E G I
12 U Zone N: Canada
U: Federal
13 A Equipment A: Standard
14
XXXXX Option Codes Option Codes
15
16
17
18
Revision: December 20092009 QX56

IDENTIFICATION INFORMATIONGI-21
< FEATURES OF NEW MODEL >
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Identification NumberINFOID:0000000003771190
VEHICLE IDENTIFICATION NUMBER ARRANGEMENT
1. Emission control information label 2. F.M.V.S.S./C.M.V.S.S. certification label 3. Tire placard
4. Vehicle identification number plate 5. Air conditioning specfication label
AWAIA0026GB
Position Character Qualifier Definition
1 5N1 Manufacturer 5N1: USA produced multi-purpose vehicle
2
3
4 A Engine type A: VK56DE
5 A0 Vehicle line A0: Infiniti QX56
6
7 8 Body type 8: 4 door wagon
8C Gross vehicle
weight ratingC: 4WD, 4-wheel ABS, Class F
D: 2WD, 4-wheel ABS, Class F
9 * Check digit (0 to 9 or X) The code for the check digit is determined by a mathematical com-
putation.
10 9 Model year 2009
11 NManufacturing
plant
N: Canton Mississippi
12
XXXXXX Vehicle serial num-
ber Chassis number
13
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Revision: December 20092009 QX56