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FRONT SUSPENSION ASSEMBLYFSU-5
< SERVICE INFORMATION >
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FRONT SUSPENSION ASSEMBLY
On-Vehicle Inspection and ServiceINFOID:0000000001327537
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 bet ween 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-10.
Wheel Alignment InspectionINFOID:0000000001327538
DESCRIPTION
Measure wheel alignment under unladen conditions.
NOTE:
Unladen conditions mean that fuel, engine coolant, and l ubricant 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 recomm ended for any NISSAN/INFINITI vehicle.
- The four-wheel “thrust” process helps ensure that t he 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 ca librated in order to give correct information.
- Check with the manufacturer of your specific equi pment for their recommended Service/Calibration Sched-
ule.
THE ALIGNMENT PROCESS
IMPORTANT:
Use only the alignment specificati ons 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. Axial end play : 0 mm (0 in)
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FSU-6
< SERVICE INFORMATION >
FRONT SUSPENSION ASSEMBLY
- Use the “Jacking Compensation Method”. After installing the alignment targets or head units, raise the vehi-
cle 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.
Removal and InstallationINFOID:0000000001327539
COMPONENTS
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FRONT SUSPENSION ASSEMBLYFSU-7
< SERVICE INFORMATION >
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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
PEIA0101E
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FSU-8
< SERVICE INFORMATION >
FRONT SUSPENSION ASSEMBLY
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-
18.
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-37
.
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 jo int 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
.
13. Remove front final drive side of drive shaft with power tool. (For AWD models) Refer to FAX-15, "
Removal and Installation (Left
Side)", FAX-16, "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.
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.
19. Front cross bar 20. Cotter pin
Refer to GI-8, "
Component", for the symbols in the figure.
SEIA0328E
SEIA0329E
PEIA0109E
SEIA0330E
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FRONT SUSPENSION ASSEMBLYFSU-9
< SERVICE INFORMATION >
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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-13
.
INSTALLATION
Refer to "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 suspensi on components and steering components, check wheel align-
ment. Refer to FSU-5, "
Wheel Alignment Inspection".
After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-8, "
Adjust-
ment of Steering Angle Sensor Neutral Position".
Check the following item after service.
- Installation condition of wheel sensor harness.
SEIA0331E
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FSU-10
< SERVICE INFORMATION >
COIL SPRING AND STRUT
COIL SPRING AND STRUT
Removal and InstallationINFOID:0000000001327540
REMOVAL
1. Remove tires from vehicle with power tool.
2. Remove brake hose lock plate. Then remove brake hose fromstrut 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-6, "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-5,
"Wheel Alignment Inspection".
After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-8, "
Adjust-
ment of Steering Angle Sensor Neutral Position".
Check the following item after service.
- Installation condition of wheel sensor harness.
SEIA0328E
SEIA0329E
SEIA0330E
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COIL SPRING AND STRUTFSU-11
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Attach strut upper plate as shown in the figure.
Disassembly and AssemblyINFOID:0000000001327541
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 sp ring. 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 whil e 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.
ASSEMBLY
NOTE:
SEIA0334E
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FSU-12
< SERVICE INFORMATION >
COIL SPRING AND STRUT
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 (c ommercial service tool), and install it onto strut.
CAUTION:
Face tube side of coil spri ng 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 sp ring. 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 whil e making sure coil spring
attachment position does not move.
7. Remove strut attachment (SST) from strut.
SEIA0296E
SFA149
SEIA0247E
SEIA0298E
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