INFINITI FX35 2006 Service Manual

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING FSU-5
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Revision: 2006 December 2006 FX35/FX45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNES000FN
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
× : Applicable Reference page
FSU-8FSU-12
—
—
—
FSU-8FSU-6FSU-16
NVH in PR section
NVH in RFD section
NVH in FAX and FSU section
NVH in WT section
NVH in WT section
NVH in FAX section NVH in BR section NVH in PS section
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Strut deformation, damage or deflection
Bushing or mounting deterioration
Parts interference
Spring fatigue
Suspension looseness
Incorrect wheel alignment
Stabilizer bar fatigue
PROPELLER SHAFT (For AWD models)
DIFFERENTIAL (For AWD models)
FRONT AXLE AND FRONT SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT (For AWD models)
BRAKES
STEERING
Symptom FRONT SUSPENSION Noise
××××× × ××× ×××××
Shake ×××× × × × ×××××
Vibration ××××× × ×× × ×
Shimmy ×××× × ××× ××
Judder ××× ××× ××
Poor quality ride or han-
dling ××××× ×× ×××

FSU-6
FRONT SUSPENSION ASSEMBLY
Revision: 2006 December 2006 FX35/FX45
FRONT SUSPENSION ASSEMBLYPFP:54010
On-Vehicle Inspection and ServiceNES000I3
Make sure the mounting conditions (looseness, back lash) of each component and component conditions
(wear, damage) are normal.
INSPECTION LOWER BALL JOINT END PLAY
1. Set front wheels in a straight-ahead position. Do not depress brake pedal.
2. Place an iron bar or similar tool between transverse link and steering knuckle.
3. Measure axial end play by prying it up and down.
CAUTION:
Be careful not to damage ball joint boot.
STRUT INSPECTION

Check strut for oil leakage, damage and replace if there are. Refer to FSU-11, "COIL SPRING AND
STRUT" .
Wheel Alignment InspectionNES000I4
DESCRIPTION

Measure wheel alignment under unladen conditions.
NOTE:
Unladen conditions mean that fuel, engine coolant, and lubricant are full. Spare tire, jack, hand tools and
mats are designated positions.
PRELIMINARY CHECK

Check tires for improper air pressure and wear.

Check road wheels for runout.

Check wheel bearing axial end play.

Check ball joint axial end play of compression rod, upper link, and steering knuckle

Check shock absorber operation.

Check each mounting part of axle and suspension for looseness and deformation.

Check each link, rod and member for cracks, deformation and other damage.

Check vehicle posture.
GENERAL INFORMATION AND RECOMMENDATIONS

A four-wheel thrust alignment should be performed.
–This type of alignment is recommended for any NISSAN/INFINITI vehicle.
–The four-wheel “thrust” process helps ensure that the vehicle is properly aligned and the steering wheel is
centered.
–The alignment rack itself should be capable of accepting any NISSAN/INFINITI vehicle.
–The rack should be checked to ensure that it is level.

Make sure the machine is properly calibrated.
–Your alignment equipment should be regularly calibrated in order to give correct information.
–Check with the manufacturer of your specific equipment for their recommended Service/Calibration
Schedule. Axial end play : 0 mm (0 in)

FRONT SUSPENSION ASSEMBLY FSU-7
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Revision: 2006 December 2006 FX35/FX45
THE ALIGNMENT PROCESS
IMPORTANT:
Use only the alignment specifications listed in this Service Manual.

When displaying the alignment settings, many alignment machines use “indicators”: (Green/red, plus or
minus, Go/No Go). Do NOT use these indicators.
–The alignment specifications programmed into your machine that operate these indicators may not be cor-
rect.
–This may result in an ERROR.

Some newer alignment machines are equipped with an optional “Rolling Compensation” method to “com-
pensate” the sensors (alignment targets or head units). DO NOT use this “Rolling Compensation”
method.
–Use the “Jacking Compensation Method”. After installing the alignment targets or head units, raise the
vehicle and rotate the wheels 1/2 turn both ways.
–See Instructions in the alignment machine you're using for more information on this.
INSPECTION OF CAMBER, CASTER AND KINGPIN INCLINATION ANGLES

Camber, caster, kingpin inclination angles cannot be adjusted.

Before inspection, mount front wheels onto turning radius gauge. Mount rear wheels onto a stand that has
same height so vehicle will remain horizontal.
Using a CCK Gauge
Install CCK gauge attachment [SST: KV991040S0 ( – )] as following procedure in wheel, then measure
wheel alignment.
1. Remove wheel nuts (3), and install a guide bolts to hub bolts.
2. Screw adapter into plate body until it contacts plate tightly.
3. Screw center plate into plate.
4. Insert plate on guide bolts. Put spring in, and then evenly screw both guide bolt nuts. When fastening guide nuts, do not com-
pletely compress springs.
5. Place the dent of alignment gauge onto the projection of center plate and tightly contact them to measure.
CAUTION:

If camber, caster, or kingpin inclination angle is outside
the standard, check front suspension parts for wear and
damage, and replace suspect parts if necessary.

King pin inclination angle is reference value, no inspection is required. (Due to the type of sus-
pension, the kingpin inclination angle cannot be measured correctly using a normal alignment
tester.)
SEIA0240E
Standard value
Camber, caster, kingpin inclination angles: Refer to FSU-18, "
SERVICE DATA AND SPECIFI-
CATIONS (SDS)" .
SEIA0241E

FSU-8
FRONT SUSPENSION ASSEMBLY
Revision: 2006 December 2006 FX35/FX45
Removal and InstallationNES000FQ
COMPONENTS
PEIA0101E

FRONT SUSPENSION ASSEMBLY FSU-9
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Revision: 2006 December 2006 FX35/FX45
REMOVAL
1. Set an engine slinger to engine, then suspend engine.
2. Remove tire from vehicle with power tool.
3. Remove brake caliper with power tool. Hang it in a place where it will not interfere with work. Refer to BR-
19, "FRONT DISC BRAKE" .
4. Remove brake hose lock plate. Then remove brake hose from strut assembly.
5. Remove disc rotor.
6. Remove wheel sensor harness from strut assembly. CAUTION:
Do not pull on wheel sensor harness.
7. Remove undercover with power tool.
8. Remove front cross bar.
9. Remove steering hydraulic piping bracket from front suspension member. Refer to PS-39, "
HYDRAULIC LINE" .
10. Remove cotter pin at steering outer socket, then loosen mount- ing nut.
11. Use a ball joint remover (SST) to remove steering outer socket from steering knuckle. Be careful not to damage ball joint boot.
CAUTION:
Tighten temporarily mounting nut to prevent damage to
threads and to prevent ball joint remover (SST) from com-
ing off.
12. Remove mounting bolts of steering gear with power tool, then hang steering gear on vehicle. Refer to PS-17, "
POWER
STEERING GEAR AND LINKAGE" .
13. Remove front final drive side of drive shaft with power tool. (For AWD models) Refer to FAX-12, "
Removal and Installation (Left
Side)" , FA X - 1 3 , "Removal and Installation (Right Side)" .
14. Set jack under front suspension member.
15. Remove fixing bolts and nuts between strut assembly and steering knuckle with power tool.
1. Strut upper plate 2. Strut spacer 3. Mounting insulator
4. Mounting insulator bracket 5. Mounting bearing 6. Spring upper seat
7. Spring upper rubber seat 8. Coil spring 9. Spring lower rubber seat
10. Bound bumper 11. Strut 12. Steering knuckle
13. Front suspension member 14. Transverse link 15. Stabilizer bar
16. Stabilizer bushing 17. Stabilizer clamp 18. Stabilizer connecting rod
19. Front cross bar 20. Cotter pin
Refer to GI-11, "
Components" , for the symbols in the figure.
SEIA0328E
SEIA0329E
SDIA1434E

FSU-10
FRONT SUSPENSION ASSEMBLY
Revision: 2006 December 2006 FX35/FX45
16. Remove stabilizer connecting rod upper nut with power tool, separate stabilizer connecting rod and strut assembly.
17. Remove mounting nuts between engine mounting insulator and front suspension member.
18. Remove mounting bolts which are at the back of transverse link (mounting part with body) with power tool, separate transverse
link.
19. Remove mounting nuts between front suspension member and body with power tool.
20. Move jack down slowly to remove front suspension member, transverse link, stabilizer bar, drive shaft (For AWD models) and
steering knuckle from vehicle as a unit.
21. Remove transverse link from steering knuckle. Refer to FSU-14,
"TRANSVERSE LINK" .
INSTALLATION

Refer to FSU-8, "Removal and Installation" for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

After removing/installing or replacing suspension components and steering components, check wheel
alignment. Refer to FSU-6, "
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" .

Check the following item after service.
–Installation condition of wheel sensor harness.
SEIA0330E
SEIA0331E

COIL SPRING AND STRUT FSU-11
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Revision: 2006 December 2006 FX35/FX45
COIL SPRING AND STRUTPFP:55302
Removal and InstallationNES000FS
REMOVAL
1. Remove tires from vehicle with power tool.
2. Remove brake hose lock plate. Then remove brake hose from strut assembly.
3. Remove wheel sensor harness from strut assembly. CAUTION:
Do not pull wheel sensor harness.
4. Remove stabilizer connecting rod upper nut with power tool, separate stabilizer connecting rod and strut assembly.
5. Remove fixing bolts and nuts between strut assembly and steer- ing knuckle with power tool.
6. Remove mounting nuts on mounting insulator bracket with power tool, then remove strut upper plate, strut spacer and strut
from vehicle.
INSTALLATION

Refer to FSU-8, "Removal and Installation" for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

After removing/installing or replacing suspension components, check wheel alignment. Refer to FSU-6,
"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" .

Check the following item after service.
–Installation condition of wheel sensor harness.
SEIA0328E
SEIA0329E
SEIA0330E

FSU-12
COIL SPRING AND STRUT
Revision: 2006 December 2006 FX35/FX45

Attach strut upper plate as shown in the figure.
Disassembly and AssemblyNES000FT
DISASSEMBLY
NOTE:
Make sure piston rod on strut is not damaged when removing components from strut assembly.
1. Install strut attachment (SST) to strut and fix it in a vise. CAUTION:
When installing strut attachment (SST) to strut, wrap a shop
cloth around strut to protect it from damage.
2. Using a spring compressor (commercial service tool), compress coil spring between spring upper seat and spring lower seat (on
strut) until coil spring is free.
CAUTION:
Be sure spring compressor (commercial service tool) is
securely attached to coil spring. Compress coil spring.
3. After making sure coil spring is free between spring upper seat and spring lower seat of strut, then remove piston rod lock nut.
4. Remove mounting insulator, mounting insulator bracket, mount- ing bearing, spring upper seat, spring upper rubber seat, bound
bumper. Then remove coil spring and spring lower rubber seat
from strut.
5. Gradually release spring compressor (commercial service tool), and remove coil spring. CAUTION:
Loosen spring compressor while making sure coil spring attachment position does not move.
6. Remove strut attachment (SST) from strut.
INSPECTION AFTER DISASSEMBLY
Strut Inspection

Check strut for deformation, cracks, 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.
Mounting Insulator and Rubber Parts Inspection
Check mounting insulator for cracks and rubber parts for wear. Replace them if necessary.
Coil Spring Inspection
Check coil spring for cracks, wear or damage, and replace if necessary.
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COIL SPRING AND STRUT FSU-13
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Revision: 2006 December 2006 FX35/FX45
ASSEMBLY
NOTE:
Make sure piston rod on strut is not damaged when attaching components to strut.
1. Install strut attachment (SST) to strut and fix it in a vise.
CAUTION:
When installing strut attachment (SST) to strut, wrap a shop
cloth around strut to protect it from damage.
2. Compress coil spring using a spring compressor (commercial service tool), and install it onto strut. CAUTION:

Face tube side of coil spring downward. Align lower end
to spring rubber seat as shown in the figure.

Be sure spring compressor (commercial service tool) is
securely attached to coil spring. Compress coil spring.
3. Apply soapy water to bound bumper and insert into mounting insulator.
CAUTION:
Do not use machine oil.
4. Install mounting insulator bracket, mounting bearing, bound bumper, spring upper seat, spring upper rubber seat and spring
lower rubber seat.

Installation position of spring upper seat is as shown in the fig-
ure.
5. Fix mounting insulator, then tighten piston rod lock nut with specified torque.
CAUTION:
Be careful not to deform mounting insulator bracket.
6. Gradually release spring compressor (commercial service tool), and remove coil spring.
CAUTION:
Loosen spring compressor while making sure coil spring
attachment position does not move.
7. Remove strut attachment (SST) from strut.
SEIA0296E
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SEIA0298E

FSU-14
TRANSVERSE LINK
Revision: 2006 December 2006 FX35/FX45
TRANSVERSE LINKPFP:54500
Removal and InstallationNES000FU
REMOVAL
1. Remove tire from vehicle with power tool.
2. Remove undercover with power tool.
3. Remove front cross bar.
4. Remove cotter pin at transverse link, then loosen mounting nut.
5. Use a ball joint remover (SST) to remove transverse link from steering knuckle. Be careful not to damage ball joint boot.
CAUTION:
Tighten temporarily mounting nut to prevent damage to
threads and to prevent ball joint remover (SST) from com-
ing off.
6. Remove mounting bolts which are at the back of transverse link (mounting part with body) with power tool, separate transverse
link.
7. Remove mounting bolts which are at the front of transverse link (mounting part with front suspension member) with power tool,
separate transverse link.
8. Remove transverse link from vehicle.
INSPECTION AFTER REMOVAL
Visual Inspection

Check transverse link and bushing for deformation, cracks, or damage. If any non-standard condition is
found, replace it.

Check boot of ball joint for cracks, or other damage, and also for grease leakage. If any non-standard con-
dition is found, replace it.
Ball Joint Inspection
Manually move ball stud to confirm it moves smoothly with no binding.
SDIA1435E
SEIA0331E