wheel alignment INFINITI QX56 2011 Factory Service Manual

QUICK REFERENCE CHART QX56
FRONT WHEEL ALIGNMENT
ELS0003X
*1: The minimum value and maximum value is the same as the nominal value.
Measure value under unladen*2 conditions.
*2: Fuel, engine coolant and lubricant are full. Spare tire, jack, hand tools and mats are in designated positions.
REAR WHEEL ALIGNMENTELS0003Y
Measure value under unladen* conditions.
*: Fuel, engine coolant and lubricant are full. Spare tire, jack, hand tools and mats are in designated positions. Item Standard
Measurement wheel Left side Right side
Camber
Degree minute (Decimal degree) Minimum
−0 °45 ′ ( −0.75 °) −0°55 ′ ( −0.91 °)
Nominal 0 ° 00 ′ (0.00 °) −0°10 ′ ( −0.17 °)
Maximum 0 ° 45 ′ (0.75 °)0 ° 35 ′ (0.58 °)
Left and right difference 0 ° 33 ′ (0.55 °) or less
Caster
Degree minute (Decimal degree) Minimum 2
° 20 ′ (2.34 °)2 ° 40 ′ (2.67 °)
Nominal 3 ° 05 ′ (3.08 °)3 ° 25 ′ (3.42 °)
Maximum 3 ° 50 ′ (3.83 °)4 ° 10 ′
(4.16 °)
Left and right difference 0 ° 45 ′ (0.75 °) or less
Kingpin inclination
Degree minute (Decimal degree) Minimum — —
Nominal
13° 20 ′ (13.33 °)
*113 ° 25 ′ (13.42 °)*1
Maximum — —
Toe-in Total toe-in
Distance
Minimum In 1.4 mm (0.055 in)
Nominal In 2.4 mm (0.094 in)
Maximum In 3.4 mm (0.134 in)
Toe angle (left wheel or right wheel)
Degree minute (Decimal degree) Minimum In 0
° 03 ′ (0.05 °)
Nominal In 0 ° 05 ′ (0.08 °)
Maximum In 0 ° 07 ′ (0.11 °)
Item Standard
Camber
Degree minute (Decimal degree) Minimum –1
° 00 ′ (–1.00 °)
Nominal –0 ° 30 ′ (–0.50 °)
Maximum 0 ° 00 ′ (0.00 °)
Left and right difference 0 ° 45 ′ (0.75 °) or less
To e - i n Total toe-in
Distance
Minimum 0 mm (0 in)
Nominal In 3.4 mm (0.134 in)
Maximum In 6.8 mm (0.268 in)
Toe angle (left wheel or right wheel)
Degree minute (Decimal degree) Minimum 0
° 00 ′ (0.00 °)
Nominal In 0 ° 07 ′ (0.12 °)
Maximum In 0 ° 14 ′ (0.23 °)
2011

BRC-64
< BASIC INSPECTION >[WITH VDC]
ADJUSTMENT OF STEERING ANGLE
SENSOR NEUTRAL POSITION
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
DescriptionINFOID:0000000006222588
Always adjust the neutral position of steering angle sensor before driving when the following operation is per-
formed.
× : Required —: Not required
Work ProcedureINFOID:0000000006222589
ADJUST THE NEUTRAL POSITION OF STEERING ANGLE SENSOR
CAUTION:
Always use CONSULT-III when adju sting the neutral position of steering angle sensor. (It cannot be
adjusted other than with CONSULT-III.)
1.CHECK THE VEHICLE STATUS
Stop vehicle with front wheels in the straight-ahead position.
Does the vehicle stay in the straight-ahead position?
YES >> GO TO 2.
NO >> Steer the steering wheel to the st raight-ahead position. Stop the vehicle.
2.ADJUST NEUTRAL POSITION OF STEERING ANGLE SENSOR
With CONSULT-III.
1. Turn the ignition switch ON.
CAUTION:
Never start engine.
2. Select “ABS”, “WORK SUPPORT” and “ST AN GLE SENSOR ADJUSTMENT” in this order.
3. Select “START”. CAUTION:
Never touch steering wheel while adjusting steering angle sensor.
4. After approx. 10 seconds, select “END”.
5. Turn ignition switch OFF and then turn it ON again. CAUTION:
Be sure to perform the operation above.
>> GO TO 3.
3.CHECK DATA MONITOR
With CONSULT-III.
1. The vehicle is either pointing straight ahead or t he vehicle needs to be moved. Stop when it is pointing
straight ahead.
Procedure Adjust the neutral position of steering angle sensor
Removing/ installing ABS actuator and electric unit (control unit) —
Replacing ABS actuator and electric unit (control unit) —
Removing/installing steering angle sensor ×
Replacing steering angle sensor ×
Removing/installing steering components ×
Replacing steering components ×
Removing/installing suspension components ×
Replacing suspension components ×
Removing/installing tire —
Replacing tire —
Tire rotation —
Adjusting wheel alignment. ×
Revision: 2010 May2011 QX56

BRC-66
< BASIC INSPECTION >[WITH VDC]
CALIBRATION OF DECEL G SENSOR
CALIBRATION OF DECEL G SENSOR
DescriptionINFOID:0000000006222590
CAUTION:
Always perform the decel G sensor cal
ibration before driving when the following operation is per-
formed.
NOTE:
Yaw rate/side/decel G sensor calibration is performed when performing the decel G sensor calibration.
× : Required —: Not required
Work ProcedureINFOID:0000000006222591
Decel G sensor calibration
CAUTION:
Always use CONSULT-III for the d ecel G sensor calibration. (It cannot be adjusted other than with
CONSULT-III.)
NOTE:
Yaw rate/side/decel G sensor calibration is performed when performing the decel G sensor calibration.
1.CHECK THE VEHICLE STATUS
1. Steer the steering wheel to the straight- ahead position. Stop the vehicle on level surface.
2. Stop the engine.
3. Turn the ignition switch OFF.
Is the vehicle stopped in the straight-ahead position on level surface?
YES >> GO TO 2.
NO >> Steer the steering wheel to the straight- ahead position. Stop the vehicle on level surface.
2.PERFORM DECEL G SENSOR CALIBRATION
CAUTION:
 Never allow passenger or load on the vehicle.
 Never apply vibration to the vehicle body when opening or closing door during calibration.
With CONSULT-III.
1. Turn the ignition switch ON.
CAUTION:
Never start engine.
2. Select “ABS”, “WORK SUPPORT”, “DECEL G-SENSOR CALIBRATION” in this order.
3. Select “START”.
4. After approx. 10 seconds, select “END”.
5. Turn ignition switch OFF and then turn it ON again. CAUTION:
Be sure to perform the operation above.
Procedure Decel G sensor calibration
Removing/ installing ABS actuator and electric unit (control unit) —
Replacing ABS actuator and electric unit (control unit) ×
Removing/installing steering components —
Replacing steering components —
Removing/installing suspension components —
Replacing suspension components —
Removing/installing tire —
Replacing tire —
Tire rotation —
Adjusting wheel alignment. —
Removing/installing yaw rate/side/decel G sensor ×
Replacing yaw rate/side/decel G sensor ×
Revision: 2010 May2011 QX56

EM-4
< PRECAUTION >
PRECAUTIONS
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Turn the push-button ignition switch to ACC position. (At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock wi ll remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.
5. When the repair work is completed, re-connect bot h battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button igniti on switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT-III.
Precaution for Drain Engine Coolant and Engine OilINFOID:0000000006289509
Drain engine coolant and engine oil when engine is cooled.
Precaution for Disconnecting Fuel PipingINFOID:0000000006289510
 Before starting work, check no fire or sp ark producing items are in the work area.
 Release fuel pressure before disconnecting and disassembly.
 After disconnecting pipes, plug openings to stop fuel leakage.
Precaution for Handling High Pressure Fuel SystemINFOID:0000000006289511
 High pressure fuel system components are betw een high pressure fuel pump and fuel injector.
 Always release fuel pressure and never start the engine when performing removal and installation.
 When removing or installing parts without releasing fuel pressure, fuel may be splashed and, if fuel contacts
skin or eyes, it may cause inflammation.
Precaution for Removal and DisassemblyINFOID:0000000006289512
 When instructed to use SST, use specified tools. Always be careful to work safely, avoid forceful or unin-
structed operations.
 Exercise maximum care to avoid damage to mating or sliding surfaces.
 Cover openings of engine system with tape or the equival ent, if necessary, to seal out foreign materials.
 Mark and arrange disassembly parts in an organi zed way for easy troubleshooting and assembly.
 When loosening nuts and bolts, as a basic rule, star t with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be used
where noted in the step.
Precaution for Inspection, Repair and ReplacementINFOID:0000000006289513
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precaution for Assembly and InstallationINFOID:0000000006289514
 Use torque wrench to tighten bolts or nuts to specification.
 When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is specified,
do exactly as specified.
 Replace with new gasket, packing, oil seal or O-ring.
 Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for
any restriction and blockage.
 Dowel pins are used for several parts alignment. When replacing and reassembling parts with dowel pins,
check that dowel pins are installed in the original position.
Revision: 2010 May2011 QX56

FRONT WHEEL HUB AND KNUCKLEFAX-9
< REMOVAL AND INSTALLATION > [2WD]
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8. Remove shock absorber mounting bolt from lower link. Refer to FSU-10, "Removal and Installation".
9. Separate upper link from steering knuckle, using the ball joint remover (commercial service tool), and
remove upper link.
CAUTION:
 Temporarily tighten the nut to prevent damage to threads and to prevent the ball joint remover
from suddenly coming off.
 Never damage ball joint boot.
10. Remove wheel hub and bearing assembly, and then remove splash guard.
11. Remove lower link from steering knuckle. CAUTION:
Never damage ball joint boot.
12. Remove steering knuckle.
13. Remove hub bolts (1) from wheel hub and bearing assembly, using the ball joint remover (A) (commercial service tool).
CAUTION:
 Remove hub bolt only when necessary.
 Never hammer the hub bolt to avoid impact to the wheel
hub and bearing assembly.
 Pull out the hub bolt in a di rection perpendicular to the
wheel hub and bearing assembly.
14. Perform inspection after removal. Refer to FAX-9, "
Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Place a suitable washer (A) as shown in the figure to install the hub
bolts (1) by using the tightening force of the nut (B).
CAUTION:
 Check that there is no cl earance between wheel hub and
bearing assembly, and hub bolt.
 Never reuse hub bolt.
 Perform the final tightening of each of parts under unladen condi-
tions, which were removed when removing wheel hub and bearing
assembly and steering knuckle.
 Never reuse cotter pin.
 Perform inspection after installation. Refer to FA X - 9 , "
Inspection".
InspectionINFOID:0000000006225420
INSPECTION AFTER REMOVAL
Check components for deformation, cracks, and other damage. Replace it if necessary.
Ball Joint Inspection
Check boots of lower link and steering outer socket ba ll joint for breakage, axial play, and torque. Refer to
FSU-15, "
Inspection" and ST-46, "Inspection".
INSPECTION AFTER INSTALLATION
1. Check wheel sensor harness for proper connection. Refer to BRC-134, "FRONT WHEEL SENSOR :
Exploded View".
2. Check the wheel alignment. Refer to FSU-7, "
Inspection".
3. Adjust neutral position of steering angle sensor. Refer to BRC-64, "
Work Procedure".
JPDIF0299ZZ
JPDIF0300ZZ
Revision: 2010 May2011 QX56

FAX-20
< REMOVAL AND INSTALLATION >[4WD]
FRONT WHEEL HUB AND KNUCKLE
 Never reuse cotter pin.
 Perform inspection after installation. Refer to
FAX-20, "
Inspection".
InspectionINFOID:0000000006225398
INSPECTION AFTER REMOVAL
Check components for deformation, cracks, and other damage. Replace it if necessary.
Ball Joint Inspection
Check boots of lower link and steering outer socket ball joint for breakage, axial play, and torque. Refer to
FSU-15, "
Inspection" and ST-46, "Inspection".
INSPECTION AFTER INSTALLATION
1. Check wheel sensor harness for proper connection. Refer to BRC-134, "FRONT WHEEL SENSOR :
Exploded View".
2. Check the wheel alignment. Refer to FSU-7, "
Inspection".
3. Adjust neutral position of steering angle sensor. Refer to BRC-64, "
Work Procedure".
Revision: 2010 May2011 QX56

FAX-28
< REMOVAL AND INSTALLATION >[4WD]
FRONT DRIVE SHAFT
Inspection
INFOID:0000000006225406
INSPECTION AFTER REMOVAL
 Move joint up/down, left/right, and in the axial directi ons. Check for motion that is not smooth and for signifi-
cant looseness.
 Check boot for cracks, damage, and leakage of grease.
 Disassemble drive shaft and exchange malfunctioning part if there is a non-standard condition.
INSPECTION AFTER DISASSEMBLY
Shaft
Check shaft for runout, cracks, or ot her damage. Replace it if necessary.
Joint Sub-Assembly (Wheel Side)
Check the following items, replace the parts if necessary.
 Joint sub-assembly for rough rotation and excessive axial looseness.
 The inside of the joint sub-assembly for entry of foreign material.
 Joint sub-assembly for compression scars, cra cks, and fractures inside of joint sub-assembly.
Replace joint sub-assembly if there are any non-standard conditions of components.
Housing (Final Drive side)
Replace housing if there is scratching or wear of housing roller contact surface.
INSPECTION AFTER INSTALLATION
1. Check wheel sensor harness for proper connection. Refer to BRC-134, "FRONT WHEEL SENSOR :
Exploded View".
2. Check the wheel alignment. Refer to FSU-7, "
Inspection".
3. Adjust neutral position of steering angle sensor. Refer to BRC-64, "
Work Procedure".
4. Adjust levelizer adjustment of height sensor. Refer to EXL-61, "
LEVELIZER ADJUSTMENT : Special
Repair Requirement".
SDIA1163J
Revision: 2010 May2011 QX56

FUEL TANKFL-9
< REMOVAL AND INSTALLATION >
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3. Remove LH rear wheel and tire.
4. Disconnect fuel filler hose, vent hose and EVAP hose at fuel tank side.
5. Remove fuel tank protector.
6. Remove the fuel tank mounting band bolts while supporting the
fuel tank with a suitable lift jack.
CAUTION:
Support the position that fu el tank mounting bands never
engage.
7. Supporting with hands, descend suitable jack carefully, and remove fuel tank. CAUTION:
 Check that all connection po ints have been disconnected.
 Confirm there is no interference with vehicle.
InspectionINFOID:0000000006289689
INSPECTION AFTER INSTALLATION
Use the following procedure to check for fuel leakage.
1. Turn ignition switch “ON” (with engine stopped), and check connections for leakage by applying fuel pres-
sure to fuel piping.
2. Start engine and rev it up and check there are no f uel leakage at the fuel system tube and hose connec-
tions.
 After removing/installing rear suspension assembly, check to adjust wheel alignment. Refer to RSU-6,
"Inspection".
LBIA0413E
Revision: 2010 May2011 QX56

FSU-1
SUSPENSION
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SECTION FSU
A
B
FSU
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O PCONTENTS
FRONT SUSPENSION
PRECAUTION ................ ...............................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
Precaution for Procedure without Cowl Top Cover ......3
Precautions for Suspension ......................................3
PREPARATION ............................................4
PREPARATION .............................................. .....4
Special Service Tools .......................................... ......4
Commercial Service Tools ........................................4
SYMPTOM DIAGNOSIS ...............................5
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ........................ .....
5
NVH Troubleshooting Chart ................................ ......5
PERIODIC MAINTENANCE ..........................6
FRONT SUSPENSION ASSEMBLY .............. .....6
Inspection ............................................................ ......6
WHEEL ALIGNMENT ..........................................7
Inspection ............................................................ ......7
Adjustment ................................................................7
REMOVAL AND INSTALLATION ................9
FRONT COIL SPRING AND SHOCK AB-
SORBER ............................................................
9
Exploded View ..................................................... .....9
Removal and Installation .........................................10
Disassembly and Assembly .....................................11
Inspection and Adjustment ......................................12
Disposal ...................................................................13
LOWER LINK ....................................................14
Exploded View .........................................................14
Removal and Installation .........................................14
Inspection ................................................................15
UPPER LINK ......................... ............................17
Exploded View ..................................................... ....17
Removal and Installation .........................................17
Inspection ................................................................18
FRONT STABILIZER ........................................20
Exploded View .........................................................20
Removal and Installation .........................................20
Inspection ................................................................20
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .............................................
21
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
21
Wheel Alignment ................................................. ....21
Ball Joint ..................................................................21
Wheel Height ...........................................................21
Revision: 2010 May2011 QX56

PRECAUTIONSFSU-3
< PRECAUTION >
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5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button ignition switch is turned to LOCK position.)
6. Perform self-diagnosis check of a ll control units using CONSULT-III.
Precaution for Procedure without Cowl Top CoverINFOID:0000000006271994
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precautions for SuspensionINFOID:0000000006225635
 When installing rubber bushings, the final tightening mu st be carried out under unladen conditions with tires
on ground. Spilled oil might shorten the life of rubb er bushings. Be sure to wipe off any spilled oil.
- Unladen conditions mean that fuel, engine coolant and l ubricant are full. Spare tire, jack, hand tools and
mats are in designated positions.
 After servicing suspension parts, be sure to check wheel alignment.
 Self-lock nuts are not reusable. Always use new ones w hen installing. Since new self-lock nuts are pre-oiled,
tighten as they are.
PIIB3706J
Revision: 2010 May2011 QX56