INFINITI FX35 2004 Service Manual

FSU-6
FRONT SUSPENSION ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
FRONT SUSPENSION ASSEMBLYPFP:54010
On-Vehicle Inspection and ServiceAES000N3
Make sure the mounting conditions (looseness, back lash) of each component and component statues (wear,
damage) are normal.
INSPECTION OF TRANSVERSE LINK BALL JOINT END PLAY
1. Set front wheels in a straight-ahead position. Do not depress brake pedal.
2. Measure axial end play by installing and moving up/down between transverse link and steering knuckle
with an iron pry bar or something similar.
CAUTION:
Be careful not to damage ball joint boot.
STRUT INSPECTION
Check strut for oil leakage, damage and replace if necessary. Refer to FSU-11, "COIL SPRING AND STRUT" .
Wheel Alignment InspectionAES000N4
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
1. Check tires for improper air pressure and wear.
2. Check road wheels for runout.
3. Check wheel bearing axial end play.
4. Check transverse link ball joint axial end play.
5. Check strut operation.
6. Check each mounting part of axle and suspension for looseness and deformation.
7. Check each link, rod and member for cracks, deformation and other damage.
8. Check vehicle posture.
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 bolt to hub bolt.
2. Screw adapter into plate body until it contacts body tightly.
3. Screw center plate into plate.
4. Insert plate on guide bolt. Put spring in, and then evenly screw
both guide bolt nut. When fastening guide bolt nut, do not com-
pletely compress spring.Axial end play : 0 mm (0 in)
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FRONT SUSPENSION ASSEMBLY
FSU-7
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FSU
Revision: 2004 November 2004 FX35/FX45
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 inspec-
tion is required.
Toe-In Inspection
Measure toe-in using the following procedure.
WARNING:

Always perform the following procedure on a flat surface.

Make sure that no person is in front of vehicle before push-
ing it.
1. Bounce front of vehicle up and down to stabilize the posture.
2. Push vehicle straight ahead about 5 m (16 ft).
3. Put a mark on base line of the tread (rear side) of both tires at
the same height of hub center. These are measuring points.
4. Measure distance “A” (rear side).
5. Push vehicle slowly ahead to rotate wheels 180 degrees (1/2
turn).
If wheels have rotated more than 180 degrees (1/2 turn), try the
above procedure again from the beginning. Never push vehicle
backward.
6. Measure distance “B” (front side).Camber, caster, kingpin inclination angles:
Refer to FSU-18, "
SERVICE DATA"FSU-18, "SER-
VICE DATA" .
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Total toe-in : Refer to FSU-18, "SERVICE DATA" .
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FSU-8
FRONT SUSPENSION ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
ComponentsAES000N5
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FRONT SUSPENSION ASSEMBLY
FSU-9
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Revision: 2004 November 2004 FX35/FX45
Removal and InstallationAES000N6
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-
20, "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-41, "
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-19, "
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
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FSU-10
FRONT SUSPENSION ASSEMBLY
Revision: 2004 November 2004 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, "Components" 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.
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COIL SPRING AND STRUT
FSU-11
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Revision: 2004 November 2004 FX35/FX45
COIL SPRING AND STRUTPFP:55302
Removal and InstallationAES000N7
REMOVAL
1. Remove tire 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, "Components" 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.
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FSU-12
COIL SPRING AND STRUT
Revision: 2004 November 2004 FX35/FX45

Attach strut upper plate as shown in the figure.
Disassembly and AssemblyAES000N8
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: 2004 November 2004 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.
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FSU-14
TRANSVERSE LINK
Revision: 2004 November 2004 FX35/FX45
TRANSVERSE LINKPFP:54500
Removal and InstallationAES000N9
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.
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TRANSVERSE LINK
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Revision: 2004 November 2004 FX35/FX45
Swing Torque Inspection
NOTE:
Before measurement, move ball joint at least ten times by hand to check for smooth movement.

Hook spring scale at ball stud. Confirm spring scale measure-
ment value is within the specifications when ball stud begins
moving.

If it is outside the specified range, replace transverse link
assembly.
Rotating Torque Inspection

Attach mounting nut to ball stud. Check that rotating torque is
within the specifications with a preload gauge (SST).

If it is outside the specified range, replace transverse link
assembly.
Axial End Play Inspection

Move tip of ball joint in axial direction to check for looseness.

If it is outside the specified range, replace transverse link assembly.
INSTALLATION

Refer to FSU-8, "Components" 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" . Swing torque:
Less than 0.5 − 4.9 N·m (0.06 − 0.49 kg-m, 5 − 43 in-lb)
Measure value of spring scale:
Less than 0.5 − 4.9 N·m (0.06 − 0.49 kg-m, 5 − 43 in-lb)
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Rotating Torque:
Less than 0.5 − 4.9 N·m (0.06 − 0.49 kg-m, 5 − 43 in-lb)
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Axial end play : 0.1 mm (0.004 in)