Infiniti Q45. Manual - part 585

FRONT SUSPENSION ASSEMBLY

FSU-7

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Components

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1.

Cap (Without active damper             
suspension) 

2.

Actuator assembly (With active 
damper suspension)

3.

Nut (With active damper suspen-
sion)

4.

Actuator plate (With active damper 
suspension)

5.

Tower bar bracket

6.

Spacer

7.

Strut mounting insulator bracket

8.

Strut mounting insulator assembly

9.

Spring upper seat

10. Upper rubber seat

11. Bound bumper

12. Coil spring

13. Strut assembly

14. Tower bar

15. Front cross bar

16. Member stay

17. Suspension arm

18. Washer

19. Dynamic damper

20. Front suspension member

21. Rebound stopper

22. Stabilizer connecting rod

23. Stabilizer clamp

24. Stabilizer bushing

25. Stabilizer bar 

Refer to 

GI-9, "Components"

 , for the symbols in the figure.

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FSU-8

COIL SPRING AND STRUT

COIL SPRING AND STRUT

PFP:55302

Removal and Installation

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REMOVAL

1.

Remove tires from vehicle 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-

23, "FRONT DISC BRAKE"

 .

NOTE:
Avoid depressing brake pedal while brake caliper is removed.

3.

Remove mounting nuts of brake hose from strut assembly.

4.

Remove harness of wheel sensor from strut assembly. Refer to

BRC-63, "WHEEL SENSORS"

 .

CAUTION:

Do not pull on wheel sensor harness.

5.

Remove stabilizer connecting rod upper nut, separate strut
assembly and stabilizer connecting rod.

6.

Remove steering outer socket and cotter pin at steering knuckle,
then loosen mounting nut.

7.

Use a ball joint remover (suitable tool) 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 the ball joint remover (suitable tool)
from coming off.

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COIL SPRING AND STRUT

FSU-9

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FSU

8.

Remove cotter pin of suspension arm ball joint, then loosen
mounting nut.

9.

Use a ball joint remover (suitable tool) to remove strut assembly
from suspension arm. Be careful not to damage ball joint boot.

CAUTION:

Tighten temporarily mounting nut to prevent damage to
threads and to prevent the ball joint remover (suitable tool)
from coming off.

10. Turn actuator assembly to the left, and remove it from actuator

plate.(without active damper suspension)

11. Remove cap from assembly (without active damper suspension)

12. Remove mounting bolts of tower bar, and then remove tower bar from vehicle

13. Remove mounting nuts of strut mounting insulator assembly, and then remove strut assembly from vehi-

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INSTALLATION

●

Refer to 

FSU-7, "Components"

  for tightening torque. Install in the reverse order of the 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-6, "Adjust-

ment of Steering Angle Sensor Neutral Position"

 .

●

Make sure actuator plate fits tightly into actuator assembly.

●

Make sure actuator assembly is installed as shown in the fig-
ure.(without active damper suspension)

CAUTION:

If actuator assembly is subjected to damage drop, do not
use it.

●

Attach strut mounting insulator bracket as shown in the figure.

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FSU-10

COIL SPRING AND STRUT

Disassembly and Assembly

NES00069

DISASSEMBLY

CAUTION:

Do not damage piston rod on strut assembly when removing components from strut assembly.

1.

Fix strut mounting insulator assembly and remove actuator plate fixing nut, then remove actuator plate
from strut assembly. (with active damper suspension)

CAUTION:

Be careful not to deform actuator plate and strut mounting insulator.

2.

Install the strut attachment (SST) to strut assembly and secure it
in a vice.

CAUTION:

Wrap a shop cloth around strut assembly to protect it from
damage, when installing the strut attachment (SST) to strut
assembly.

3.

Compress coil spring using a spring compressor (commercial
service tool) until coil spring is free.

CAUTION:

Be sure spring compressor (commercial service tool) is
securely attached to coil spring before coil spring is com-
pressed. Compress coil spring.

4.

After making sure coil spring with a spring compressor is free
between upper rubber seat and lower rubber seat of strut
assembly. Remove piston rod lock nut.

5.

Remove strut mounting bracket, strut mounting insulator assem-
bly, spring upper seat, upper rubber seat, coil spring with spring
compressor and bound bumper from strut assembly.

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 lower rubber seat from strut assembly.

8.

Remove the strut attachment (SST) from strut assembly.

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