wheel torque INFINITI FX35 2005 Workshop Manual

SHOCK ABSORBER RSU-9
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Revision: 2005 July 2005 FX
SHOCK ABSORBERPFP:56210
Removal and InstallationAES000MN
REMOVAL
1. Remove tire with power tool.
2. Set jack under rear lower link.
3. Remove fixing bolt in lower side of shock absorber assembly with power tool.
4. Remove fixing nuts in upper side of shock absorber assembly with power tool and remove shock absorber assembly from
vehicle.
INSPECTION AFTER REMOVAL

Check shock absorber assembly for deformation, cracks, or damage, and replace if necessary.

Check piston rod for damage, uneven wear, or distortion, and replace if necessary.

Check welded and sealed areas for oil leakage, and replace if necessary.
INSTALLATION

Refer to RSU-7, "Components" for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

Perform final tightening of shock absorber assembly lower side (rubber bushing) under unladen condi-
tions with tires on level ground. Check wheel alignment. Refer to RSU-5, "
Wheel Alignment Inspection" .

After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-6, "Adjust-
ment of Steering Angle Sensor Neutral Position" .
Disassembly and AssemblyAES000MO
DISASSEMBLY
CAUTION:
Make sure piston rod on shock absorber is not damaged when removing components from shock
absorber.
1. Remove mounting seal from mounting seal bracket.
2. Wrap a shop cloth around lower side of shock absorber and fix it in a vise.
CAUTION:
Do not set the cylindrical part of shock absorber in vise.
3. Fix piston rod with hexagon wrench, and remove piston rod lock nut.
4. Remove mounting seal bracket, bushing, distance tube, bound bumper cover and bound bumper from shock absorber.
FA-0274D
SEIA0366E

RSU-12
SUSPENSION ARM
Revision: 2005 July 2005 FX
INSTALLATION

Refer to RSU-7, "Components" for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

Perform final tightening of rear suspension member installation position (rubber bushing) under unladen
conditions with tires on level ground. Check wheel alignment. Refer to RSU-5, "
Wheel Alignment Inspec-
tion" .

After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-6, "Adjust-
ment of Steering Angle Sensor Neutral Position" .

RADIUS ROD RSU-13
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Revision: 2005 July 2005 FX
RADIUS RODPFP:55110
Removal and InstallationAES000MQ
REMOVAL
1. Remove tire with power tool.
2. Set jack under rear lower link.
3. Remove fixing bolt and nut in axle side of radius rod.
4. Remove fixing bolt in rear suspension member side of radius rod with power tool, then remove radius rod from vehicle.
INSPECTION AFTER REMOVAL
Check radius rod and bushing for any deformation, cracks, or damage. Replace if necessary.
INSTALLATION

Refer to RSU-7, "Components" for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

Perform final tightening of rear suspension member and axle installation position (rubber bushing) under
unladen conditions with tires on level ground. Check wheel alignment. Refer to RSU-5, "
Wheel Alignment
Inspection" .

After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-6, "Adjust-
ment of Steering Angle Sensor Neutral Position" .

RSU-14
FRONT LOWER LINK
Revision: 2005 July 2005 FX
FRONT LOWER LINKPFP:55110
Removal and InstallationAES000MR
REMOVAL
1. Remove tire with power tool.
2. Set jack under rear lower link.
3. Remove front lower link protector.
4. Remove shock absorber assembly from vehicle. Refer to RSU-9, "
Removal and Installation" .
5. Remove fixing nut and bolt between front lower link and axle with power tool.
6. Remove fixing nut and bolt between front lower link and rear suspension member with power tool.
7. Remove front lower link from vehicle.
INSPECTION AFTER REMOVAL
Check front lower link and bushing for any deformation, crack, or damage. Replace if necessary.
INSTALLATION

Refer to RSU-7, "Components" for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

Perform final tightening of rear suspension member and axle installation position (rubber bushing) under
unladen conditions with tires on level ground. Check wheel alignment. Refer to RSU-5, "
Wheel Alignment
Inspection" .

After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-6, "Adjust-
ment of Steering Angle Sensor Neutral Position" .

REAR LOWER LINK & COIL SPRING RSU-15
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Revision: 2005 July 2005 FX
REAR LOWER LINK & COIL SPRINGPFP:551B0
Removal and InstallationAES000MS
REMOVAL
1. Remove tire with power tool.
2. Set jack under rear lower link.
3. Loosen fixing bolt and nut of rear lower link in side of suspension member, and then remove fixing bolt and nut in side of axle with power tool.
4. Slowly lower jack, then remove upper seat, coil spring and rubber sheet from rear lower link.
5. Remove fixing bolt and nut in side of rear suspension member to remove rear lower link with power tool.
INSPECTION AFTER REMOVAL
Check rear lower link, bushing and coil spring for deformation, cracks, and damage. Replace rear lower link
and coil spring if necessary.
INSTALLATION

Refer to RSU-7, "Components" for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

Check that upper seat is attached as shown in the figure.
NOTE:
Insert bracket into upper seat with setting three tabs of upper
seat to the projecting part of bracket beforehand as shown in the
figure.

Match up rubber seat indentions and rear lower link grooves and
attach.
NOTE:
Make sure spring is not upside down. The top and bottom are
indicated by paint color.

Perform final tightening of rear suspension member and axle
installation position (rubber bushing) under unladen conditions
with tires on level ground. Check wheel alignment. Refer to
RSU-5, "
Wheel Alignment Inspection" .

After adjusting wheel alignment, adjust neutral position of steer-
ing angle sensor. Refer to BRC-6, "
Adjustment of Steering Angle
Sensor Neutral Position" .
SEIA0333E

REAR SUSPENSION MEMBER RSU-17
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Revision: 2005 July 2005 FX
REAR SUSPENSION MEMBERPFP:55501
Removal and InstallationAES000MU
REMOVAL
1. Remove tire with power tool.
2. Remove brake caliper with power tool. Hang it in a place where it will not interfere with work. Refer to BR-
26, "REAR DISC BRAKE" .
NOTE:
Avoid depressing brake pedal while brake caliper is removed.
3. Remove wheel sensor from rear final drive, then remove wheel sensor harness from rear suspension member. Refer to BRC-57, "
WHEEL SENSORS" .
4. Remove height sensor harness from rear suspension member (if equipped).
5. Remove center muffler and main muffler. Refer to EX-3, "
EXHAUST SYSTEM" .
6. Remove stabilizer bar. Refer to RSU-16, "
Removal and Installation" .
7. Remove rear drive shaft. Refer to RAX-9, "
REAR DRIVE SHAFT" .
8. Remove rear final drive. Refer to RFD-14, "
Removal and Installation" .
9. Separate attachments between parking brake cable and vehicle and rear suspension member. Refer to PB-3, "
PARKING BRAKE CONTROL" .
10. Remove rear lower link and coil spring. Refer to RSU-15, "
Removal and Installation" .
11. Remove fixing bolt in lower side of shock absorber with power tool.
12. Set jack under rear suspension member.
13. Remove fixing bolts and nuts of tunnel stay and member stay with power tool, then remove those parts from vehicle.
14. Remove fixing bolts and nuts of rear pin stay with power tool and then remove rear pin stay from vehicle.
15. Slowly lowering jack, then remove rear suspension member, suspension arm, radius rod, front lower link and axle from vehicle as a unit.
16. Remove fixing bolts and nuts with power tool, then remove suspension arm, front lower link, and radius rod from rear suspension member.
INSPECTION AFTER REMOVAL
Check rear suspension member for deformation, cracks, and other damage and replace if necessary.
INSTALLATION

Refer to RSU-7, "Components" , for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

Perform final tightening of installation position of links (rubber bushing) under unladen conditions with tires
on level ground. Check wheel alignment. Refer to RSU-5, "
Wheel Alignment Inspection" .

After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-6, "Adjust-
ment of Steering Angle Sensor Neutral Position" .

RSU-18
SERVICE DATA
Revision: 2005 July 2005 FX
SERVICE DATAPFP:00030
Wheel AlignmentAES000MV
Ball JointAES000MW
Wheelarch Height (Unladen*)AES000MX
*: Fuel, engine coolant and engine oil full. Spare tire, jack, hand tools and mats are in designated positions. Camber
Degree minute (Decimal degree) Minimum – 1
° 18 ′ (– 1.30 °)
Nominal – 0 ° 48 ′ (– 0.80 °)
Maximum – 0 ° 18 ′ (– 0.30 °)
Total toe-in Distance (A – B)
Minimum 2.4 mm (0.094 in)
Nominal 4.7 mm (0.185 in)
Maximum 7.0 mm (0.276 in)
Angle (left plus right)
Degree minute (Degree) Minimum 0
°05 ′ (0.08 °)
Nominal 0 °10 ′ (0.17 °)
Maximum 0 °15 ′ (0.25 °)
Axial end play 0 mm (0 in)
Swing torque 0.5 − 3.4 N·m (0.06 − 0.34 kg-m, 5 − 30 in-lb)
Measurement on spring balance (cotter pinhole position) 9.7 − 66.0 N (0.99 − 6.7 kg, 2.18 − 14.8 lb)
Rotating torque 0.5 − 3.4 N·m (0.06 − 0.34 kg-m, 5 − 30 in-lb)
Destination USA Canada
Engine VQ35DE VK45DE VQ35DE VK45DE
Axle 2WD AWD AWD
Tire size 265/60R18 265/50R20 265/60R18 265/50R20 265/60R18 265/50R20
Front (Hf) 835 mm
(32.87 in) 834 mm
(32.83 in) 834 mm
(32.83 in) 833 mm
(32.80 in) 832 mm
(32.76 in) 834 mm
(32.83 in) 833 mm
(32.80 in) 832 mm
(32.76 in)
Rear (Hr) 822 mm
(32.36 in) 821 mm
(32.32 in) 829 mm
(32.64 in) 827 mm
(32.56 in) 825 mm
(32.48 in) 827 mm
(32.56 in) 826 mm
(32.52 in) 823 mm
(32.40 in)
SFA818A

TF-10
AWD SYSTEM
Revision: 2005 July 2005 FX
AWD SYSTEMPFP:41650
Power Transfer DiagramADS000RV
System DescriptionADS000RW
DESCRIPTION

Electronic control allows optimal distribution of torque to front/rear wheels to match road conditions.

Makes possible stable driving, with no wheel spin, on snowy roads or other slippery surfaces.

On roads which do not require AWD, it contributes to improved fuel economy by driving in conditions close
to rear-wheel drive.

Sensor inputs determine the vehicle's turning condition, and in response tight cornering/braking are con-
trolled by distributing optimum torque to front wheels.
NOTE:

When driving, if there is a large difference between front and rear wheel speed which continues for a long
time, fluid temperature of drive system parts becomes too high and AWD warning lamp flashes rapidly.
(When AWD warning lamp flashes, vehicle changes to rear-wheel drive conditions.) Also, optional distri-
bution of torque sometimes becomes rigid before lamp flashes rapidly, but it is not malfunction.

If AWD warning lamp is flashing rapidly, stop vehicle and allow it to idle for some time. Flashing will stop
and AWD system will be restored.

When driving, AWD warning lamp may flash slowly if there is a significant difference in diameter of the
tires. At this time, vehicle performance is not fully available and cautious driving is required. (Continues
until engine is turned OFF.)

If the warning lamp flashes slowly during driving but remains OFF after engine is restarted, the system is
normal. If it again flashes slowly after driving for some time, vehicle must be inspected.

When the difference of revolution speed between the front and rear wheel mode the shift occasionally
changes to direct 4-wheel driving conditions automatically. This is not malfunction.
SDIA1611E

AWD SYSTEM TF-11
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Revision: 2005 July 2005 FX
ELECTRIC CONTROLLED COUPLING
Operation Principle
1. AWD control unit supplies command current to electric controlled coupling (AWD solenoid).
2. Control clutch is engaged by electromagnet and torque is detected in control clutch.
3. The cam operates in response to control clutch torque and applies pressure to main clutch.
4. Main clutch transmits torque to front wheels according to pressing power.

Transmission torque to front wheels is determined according
to command current.
AWD CONTROL UNIT

Controls distribution of drive power between rear-wheel drive
(0:100) and AWD (50:50) conditions according to signals from
sensors.

Self-diagnosis can be done with CONSULT-II.
SDIA2270E
SDIA1844E
SDIA2273E

TF-12
AWD SYSTEM
Revision: 2005 July 2005 FX
AWD WARNING LAMP
Turns ON when there is a malfunction in AWD system. It indicates that fail-safe mode is engaged and vehicle
change to rear-wheel drive or shifting driving force-AWD (Front-wheels still have some driving torque).
Also turns ON when ignition switch is turned ON, for purpose of lamp check. Turns OFF approximately for 1
seconds after the engine starts if system is normal.
AWD Warning Lamp Indication
System DiagramADS000RX
Condition AWD warning lamp
Lamp check Turns ON when ignition switch is turned ON. Turns OFF
approx. 1 second after engine start.
AWD system malfunction ON
Protection function is activated due to heavy load to electric con-
trolled coupling. (AWD system is not malfunctioning and AWD system
changes to 2WD mode.) Rapid flashing: 2 times/second
(Flashing in approx. 1 minute and then turning OFF.)
Large difference in diameter of front/rear tires Slow flashing: 1 time/2 seconds
(Continuing to flash until turning ignition switch OFF)
Other than above (system normal) OFF
SDIA2160E