2007 INFINITI M35 fsu

FSU-6
[2WD]
FRONT SUSPENSION ASSEMBLY
Revision: 2007 April2007 M35/M45
FRONT SUSPENSION ASSEMBLYPFP:54010
On-Vehicle Inspection NES000IA
Make sure the mounting conditions (looseness, back lash) of each component and component conditions
(wear, damage) are normal.
INSPECTION OF UPPER LINK 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. Do not damage the installation position by applying
excessive force.
SHOCK ABSORBER INSPECTION
Check for oil leakage, damage and breakage of installation positions.
Wheel Alignment InspectionNES000IB
DESCRIPTION
Measure wheel alignment under unladen conditions.
NOTE:
“Unladen conditions” means that fuel, engine coolant, and lubricant are full. Spare tire, jack, hand tools and
mats are in designated positions.
PRELIMINARY CHECK

Check tires for improper air pressure and wear.

Check road wheels for runout. Refer to WT-6, "ROAD WHEEL" .

Check wheel bearing axial end play. Refer to FAX-5, "WHEEL BEARING INSPECTION" .

Check transverse link ball joint axial end play. Refer to FSU-14, "INSPECTION AFTER REMOVAL" .

Check shock absorber operation.

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

Check each of suspension member, shock absorber, upper link and transverse link for cracks, deforma-
tion and other damage.

Check vehicle height (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
[2WD]
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FSU
Revision: 2007 April2007 M35/M45
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 the CCK gauge attachment [SST: KV991040S0 ( – )] with the following procedure on wheel, then
measure wheel alignment.
1. Remove three wheel nuts, and install the guide bolts to hub bolt.
2. Screw the adapter into the plate until it contacts the plate tightly.
3. Screw the center plate into the plate.
4. Insert the plate assembly on the guide bolt. Put the spring in,
and then evenly screw the three guide bolt nuts. When fastening
the guide nuts, do not completely compress the spring.
5. Place the dent of alignment gauge onto the projection of the
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. Replace suspect parts if a malfunction is
detected.

Kingpin inclination angle is reference value, no inspec-
tion is required.
SEIA0240E
Camber, caster, kingpin inclination angles:
Refer to FSU-19, "
SERVICE DATA AND SPECIFICA-
TIONS (SDS)" .
SEIA0241E

FSU-8
[2WD]
FRONT SUSPENSION ASSEMBLY
Revision: 2007 April2007 M35/M45
ComponentsNES000IC
SEIA0664E

FRONT SUSPENSION ASSEMBLY
FSU-9
[2WD]
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FSU
Revision: 2007 April2007 M35/M45
.
Removal and Installation NES000ID
REMOVAL
1. For VK45DE engine models, disconnect related electric wires and hoses from engine assembly to remove
front suspension member with engine assembly. Refer to EM-247, "
ENGINE ASSEMBLY" .
2. Remove cowl top panel and hood. Refer to EI-18, "
COWL TOP" , EI-17, "HOOD" .
3. For VQ35DE engine models, install engine slinger, and then hoist engine. Refer to EM-114, "
Removal and
Installation (2WD Models)" .
4. Remove tires from vehicle with a power tool.
5. Remove wheel sensor from steering knuckle. Refer to BRC-54, "
WHEEL SENSOR" .
CAUTION:
Do not pull on wheel sensor harness.
6. Remove brake hose bracket. Refer to BR-11, "
BRAKE TUBE AND HOSE" .
7. Remove undercover with a power tool.
8. Remove cotter pin (1), and then loosen the nut.
9. Remove steering outer socket (2) from steering knuckle (3) so
as not to damage ball joint boot (4) using the ball joint remover
(suitable tool).
CAUTION:
Temporarily tighten the nut to prevent damage to threads
and to prevent the ball joint remover (suitable tool) from
suddenly coming off.
10. Remove the mounting nut on the upper side of stabilizer con-
necting rod with a power tool, and then remove stabilizer con-
necting rod from transverse link.
11. Separate steering gear assembly and lower joint. Refer to PS-13, "
STEERING COLUMN" .
12. Remove rack stay. Refer to FSU-8, "
Components" .
13. Remove steering hydraulic piping bracket from front suspension member. Refer to PS-39, "
HYDRAULIC
LINE" .
14. Remove the mounting nut and bolt on the lower side of shock absorber with a power tool, and then
remove shock absorber from transverse link.
15. Remove cotter pin of transverse link and steering knuckle, and then loosen nut.
16. Set jack under front suspension member.
17. Remove transverse link from steering knuckle so as not to damage ball joint boot using the ball joint
remover (suitable tool)
CAUTION:
Temporarily tighten the nut to prevent damage to threads and to prevent ball joint remover (suit-
able tool) from suddenly coming off.
18. Remove the mounting nuts of engine mounting insulator. Refer to EM-114, "
ENGINE ASSEMBLY" .
19. Remove the mounting bolts of member bracket, and then remove member bracket from front suspension
member with a power tool. Refer to FSU-8, "
Components" .
20. Remove the mounting nut and bolts of member stay, and then remove member stay from front suspension
member and vehicle with a power tool.
21. Remove the mounting nut of front suspension member with a power tool. Refer to FSU-8, "
Components" .
1. Shock absorber mounting bracket 2. Bound bumper 3. Rubber seat
4. Coil spring 5. Shock absorber 6. Upper link
7. Steering knuckle 8. Transverse link 9. Washer
10. Steering stopper bracket 11. Stabilizer connecting rod 12. Stabilizer bar
13. Stabilizer bushing 14. Stabilizer clamp 15. Front suspension member
16. Rack stay 17. Member stay 18. Member bracket
19. Clamp 20. Cotter pin 21. Stopper rubber
Refer to GI-11, "
Components" , for the symbols in the figure.
SGIA1183E

FSU-10
[2WD]
FRONT SUSPENSION ASSEMBLY
Revision: 2007 April2007 M35/M45
22. For VQ35DE engine models, gradually lower a jack to remove front suspension assembly from vehicle.
For VK45DE engine models, gradually lower a jack to remove front suspension assembly with engine
assembly from vehicle.
INSTALLATION

Installation is the reverse order of removal. For tightening torque, refer to FSU-8, "Components" .

Perform final tightening of each of parts (rubber bushing), under unladen conditions, which were removed
when removing front suspension assembly. Check wheel alignment. Refer to FSU-6, "
Wheel Alignment
Inspection" .

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

Check wheel sensor harness for proper connection. Refer to BRC-54, "WHEEL SENSOR" .

COIL SPRING AND SHOCK ABSORBER
FSU-11
[2WD]
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FSU
Revision: 2007 April2007 M35/M45
COIL SPRING AND SHOCK ABSORBERPFP:55302
Removal and InstallationNES000IE
REMOVAL
1. Remove tires from vehicle with a power tool.
2. Remove harness of wheel sensor from shock absorber. Refer to BRC-54, "
WHEEL SENSOR" .
CAUTION:
Do not pull on wheel sensor harness.
3. Remove brake hose bracket. Refer to BR-11, "
BRAKE TUBE AND HOSE" .
4. Remove the mounting nut on the upper side of stabilizer connecting rod with a power tool, and then
remove stabilizer connecting rod from transverse link.
5. Remove mounting nut and bolt on the lower side of shock absorber with a power tool, and then remove
shock absorber from transverse link.
6. Remove cotter pin of transverse link and steering knuckle, and then loosen nut.
7. Remove transverse link from steering knuckle so as not to damage ball joint boot using the ball joint
remover (suitable tool).
CAUTION:
Temporarily tighten the nut to prevent damage to threads and to prevent ball joint remover (suit-
able tool) from suddenly coming off.
8. Remove the mounting nuts of shock absorber mounting bracket, then remove shock absorber from vehi-
cle.
INSTALLATION

Installation is the reverse order of removal. For tightening torque, refer to FSU-8, "Components" .

Perform final tightening of bolt and nut at the shock absorber lower side (rubber bushing), under unladen
conditions with tires on level ground. Check wheel alignment. Refer to FSU-6, "
Wheel Alignment Inspec-
tion" .

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

Check wheel sensor harness for proper connection. Refer to BRC-54, "WHEEL SENSOR" .
Disassembly and AssemblyNES000IF
DISASSEMBLY
CAUTION:
Do not damage shock absorber piston rod when removing components from shock absorber.
1. Install strut attachment [SST] to shock absorber and secure it in
a vise.
CAUTION:
When installing the strut attachment to shock absorber,
wrap a shop cloth around strut to protect it from damage.
SEIA0296E

FSU-12
[2WD]
COIL SPRING AND SHOCK ABSORBER
Revision: 2007 April2007 M35/M45
2. Using a spring compressor (commercial service tool), compress
coil spring between rubber seat and spring lower seat (on shock
absorber) until coil spring with a spring compressor is free.
CAUTION:
Be sure a spring compressor is securely attached coil
spring. Compress coil spring
3. Make sure coil spring with a spring compressor between rubber
seat and spring lower seat (shock absorber) is free and then
remove piston rod lock nut while securing the piston rod tip so
that piston rod does not turn.
4. Remove shock absorber mounting bracket, rubber seat, bound
bumper from shock absorber.
5. Remove coil spring with a spring compressor, and then gradually release a spring compressor.
CAUTION:
Loosen while making sure coil spring attachment position does not move.
6. Remove the strut attachment from shock absorber.
INSPECTION AFTER DISASSEMBLY
Shock Absorber Inspection
Check the following:

Shock absorber for deformation, cracks or damage, and replace it if a malfunction is detected.

Piston rod for damage, uneven wear or distortion, and replace it if a malfunction is detected.

For oil leakage, and replace it if a malfunction is detected.
Shock Absorber Mounting Bracket and Rubber Parts Inspection
Check shock absorber mounting bracket for cracks and rubber parts for wear. Replace it if a malfunction is
detected.
Coil Spring Inspection
Check coil spring for cracks, wear or damage, and replace it if a malfunction is detected.
ASSEMBLY
CAUTION:
Do not damage shock absorber piston rod when installing components to shock absorber.
1. Install strut attachment [SST] to shock absorber and secure it in
a vise.
CAUTION:
When installing the strut attachment to shock absorber,
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 shock absorber.
SEIA0297E
SEIA0296E
SEIA0297E

COIL SPRING AND SHOCK ABSORBER
FSU-13
[2WD]
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FSU
Revision: 2007 April2007 M35/M45
CAUTION:

Install coil spring as shown in the figure with large diame-
ter side [100 mm (3.94 in)] up and small diameter side [90
mm (3.54 in)] down. (Distinction marks are 4.75 and 5.75
turn from the lower side end.)

Be sure a spring compressor is securely attached to coil
spring. Compress coil spring.
3. Apply soapy water to bound bumper. Insert bound bumper into
shock absorber mounting bracket, and then install it to shock
absorber together with rubber seat.
CAUTION:
Do not use machine oil.

Install shock absorber mounting bracket as shown in the fig-
ure.
CAUTION:

Coil spring is securely seated in spring mounting groove
of rubber seat.

The bottom part of spring should be at the position of A
point of spring seat.
4. Secure piston rod tip so that piston rod does not turn, then
tighten piston rod lock nut with specified torque.
5. Gradually release a spring compressor, and remove coil spring.
CAUTION:
Loosen while making sure coil spring attachment position
does not move.
6. Remove the strut attachment from shock absorber.
SEIA0661E
SEIA0662E