Infiniti Car 1998-05

Strut (MacPherson Strut) Assembly

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Wheels
     

  4.  


WARNING
Be sure to disconnect the Anti-lock Brake System (ABS) wheel sensor from the assembly. Failure to do so may result in damage to the sensor wire and the sensor becoming inoperative.



Brake calipers and suspend them with a piece of wire. Do not let them hang by the hose.
 

  1. Using a transmission jack, raise the torsion beam slightly

    Strut lower mounting bolt
     

  2.  
  3. Open the trunk, remove the trim and remove the two nuts attaching the strut to the vehicle.

    Strut
     

  4.  


CAUTION
Do not remove the center locknut from the strut assembly until the strut is safely compressed.

  1. Place the strut assembly in a vise with the special holding tool HT71780000 or in a spring compressor.
  2.  
  3. Loosen the piston rod locknut.
  4.  


CAUTION
Do not remove the piston rod locknut, the spring is under tension and can cause serious personal injury.

  1. Compress the spring with the spring compressor then remove the piston rod locknut.
  2.  


    Click image to see an enlarged view

    Fig. Be sure the spring is compressed before removing the piston locknut-G20 models



NOTE
Before removing the strut from the coil spring, note the positioning of the strut in relationship to the coil spring for reassembly.

  1. Remove or disconnect the following:

    Bushing, strut mounting bracket, and the upper spring seat rubber
     
    Strut, leaving the coil spring compressed
     
    Bushing, bound bumper cover and the bound bumper
     

  2.  

To install:

  1. Install or connect the following:

    Bound bumper, bound bumper cover and the bushing
     
    Strut into the coil spring, make sure the strut and spring are properly positioned
     
    Upper spring seat rubber, strut mounting bracket, and the bushing. Make sure that the mounting bracket is properly positioned.
     



    Click image to see an enlarged view

    Fig. Align the spring seats as shown-G20 models



    Click image to see an enlarged view

    Fig. Make sure the springs are installed as shown-G20 models



    Piston rod locknut then remove the spring compressor. Torque the locknut to 13-17 ft. lbs. (18-24 Nm).
     
    Strut with new attaching nuts. Torque the nuts to 14-16 ft. lbs. (19-22 Nm).
     
    Strut on the rear torsion beam. Torque the bolt to 80-94 ft. lbs. (108-127 Nm).
     

  2.  
  3. Remove the support from the rear torsion beam.
  4.  
  5. Install the rear wheels and lower the vehicle.
  6.  
  7. Check the vehicle's alignment and adjust as necessary.
  8.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Rear wheels
     

  4.  
  5. Support the rear torsion beam assembly with a jack.
  6.  


CAUTION
Do not remove the center locknut from the strut assembly until the strut is safely compressed.



2 nuts attaching the strut to the vehicle located inside the trunk
 
Bolt attaching the strut to the rear torsion beam assembly and remove the strut
 

  1. Place the strut assembly in a vise with the special holding tool HT71780000 or in a spring compressor.

    Piston rod locknut
     

  2.  


CAUTION
Do not remove the piston rod locknut, the spring is under tension and can cause serious personal injury.

  1. Compress the spring with the spring compressor, then remove the piston rod locknut.
  2.  


NOTE
Before removing the strut from the coil spring, note the positioning of the strut in relationship to the coil spring for reassembly.

  1. Remove or disconnect the following:

    Bushing, strut mounting bracket, and the upper spring seat rubber
     
    Strut, leaving the coil spring compressed
     
    Bushing, bound bumper cover, and the bound bumper
     

  2.  

To install:

  1. Install or connect the following:

    Bound bumper, bound bumper cover, and the bushing
     
    Strut into the coil spring, be sure the strut and spring are properly positioned
     
    Upper spring seat rubber, strut mounting bracket, and the bushing. Be sure that the mounting bracket is properly positioned.
     
    Piston rod locknut, then remove the spring compressor. Torque the locknut to 13-17 ft. lbs. (18-24 Nm)
     
    Strut with new attaching nuts. Torque the nuts to 12-16 ft. lbs. (16-22 Nm).
     
    Strut on the rear torsion beam. Torque the bolt to 80-94 ft. lbs. (108-127Nm).
     
    Support from the rear torsion beam
     
    Rear wheels and lower the vehicle
     

  2.  
  3. Check the vehicle's alignment and adjust as necessary.
  4.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:
    WARNING
    Be sure to disconnect the ABS wheel sensor from the assembly. Failure to do so may result in damage to the sensor wire and the sensor becoming inoperative.



    Wheels
     



    Brake calipers and suspend them with a piece of wire. Do not let them hang by the hose
     

  4.  
  5. Using a transmission jack, raise the torsion beam slightly

    Strut lower mounting bolt
     

  6.  
  7. Open the trunk, remove the trim and remove the two nuts attaching the strut to the vehicle.
    CAUTION
    Do not remove the center locknut from the strut assembly until the strut is safely compressed.



    Strut
     

  8.  
  9. Place the strut assembly in a vise with the special holding tool HT71780000 or in a spring compressor.
  10.  
  11. Loosen the piston rod locknut.
    CAUTION
    Do not remove the piston rod locknut, the spring is under tension and can cause serious personal injury.

  12.  
  13. Compress the spring with the spring compressor then remove the piston rod locknut.
    NOTE
    Before removing the strut from the coil spring, note the positioning of the strut in relationship to the coil spring for reassembly.



    Click image to see an enlarged view

    Fig. Be sure the spring is compressed before removing the piston locknut-G20 models

  14.  
  15. Remove or disconnect the following:

    Bushing, strut mounting bracket, and the upper spring seat rubber
     
    Strut, leaving the coil spring compressed
     
    Bushing, bound bumper cover and the bound bumper
     

  16.  

To install:

  1. Install or connect the following:

    Bound bumper, bound bumper cover and the bushing
     
    Strut into the coil spring, make sure the strut and spring are properly positioned
     
    Upper spring seat rubber, strut mounting bracket, and the bushing. Make sure that the mounting bracket is properly positioned

    Click image to see an enlarged view

    Fig. Align the spring seats as shown-G20 models



    Click image to see an enlarged view

    Fig. Make sure the springs are installed as shown-G20 models

     



    Piston rod locknut then remove the spring compressor. Torque the locknut to 13-17 ft. lbs. (18-24 Nm)
     
    Strut with new attaching nuts. Torque the nuts to 14-16 ft. lbs. (19-22 Nm)
     
    Strut on the rear torsion beam. Torque the bolt to 80-94 ft. lbs. (108-127 Nm)
     

  2.  
  3. Remove the support from the rear torsion beam.
  4.  
  5. Install the rear wheels and lower the vehicle.
  6.  
  7. Check the vehicle's alignment and adjust as necessary.
  8.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:

    Rear wheels
     

  4.  
  5. Support the rear torsion beam assembly with a jack.
    CAUTION
    Do not remove the center locknut from the strut assembly until the strut is safely compressed.



    2 nuts attaching the strut to the vehicle located inside the trunk
     
    Bolt attaching the strut to the rear torsion beam assembly and remove the strut
     

  6.  
  7. Place the strut assembly in a vise with the special holding tool HT71780000 or in a spring compressor.
    CAUTION
    Do not remove the piston rod locknut, the spring is under tension and can cause serious personal injury.



    Piston rod locknut
     

  8.  
  9. Compress the spring with the spring compressor, then remove the piston rod locknut.
    NOTE
    Before removing the strut from the coil spring, note the positioning of the strut in relationship to the coil spring for reassembly.

  10.  
  11. Remove or disconnect the following:

    Bushing, strut mounting bracket, and the upper spring seat rubber
     
    Strut, leaving the coil spring compressed
     
    Bushing, bound bumper cover, and the bound bumper
     

  12.  

To install:

  1. Install or connect the following:

    Bound bumper, bound bumper cover, and the bushing
     
    Strut into the coil spring, be sure the strut and spring are properly positioned
     
    Upper spring seat rubber, strut mounting bracket, and the bushing. Be sure that the mounting bracket is properly positioned
     
    Piston rod locknut, then remove the spring compressor. Torque the locknut to 13-17 ft. lbs. (18-24 Nm)
     
    Strut with new attaching nuts. Torque the nuts to 12-16 ft. lbs. (16-22 Nm)
     
    Strut on the rear torsion beam. Torque the bolt to 80-94 ft. lbs. (108-127Nm)
     
    Support from the rear torsion beam
     
    Rear wheels and lower the vehicle
     

  2.  
  3. Check the vehicle's alignment and adjust as necessary.
  4.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:
    WARNING
    Be sure to disconnect the ABS wheel sensor from the assembly. Failure to do so may result in damage to the sensor wire and the sensor becoming inoperative.



    Wheels
     



    Brake calipers and suspend them with a piece of wire. Do not let them hang by the hose
     

  4.  
  5. Using a transmission jack, raise the torsion beam slightly

    Strut lower mounting bolt
     

  6.  
  7. Open the trunk, remove the trim and remove the two nuts attaching the strut to the vehicle.
    CAUTION
    Do not remove the center locknut from the strut assembly until the strut is safely compressed.



    Strut
     

  8.  
  9. Place the strut assembly in a vise with the special holding tool HT71780000 or in a spring compressor.
  10.  
  11. Loosen the piston rod locknut.
    CAUTION
    Do not remove the piston rod locknut, the spring is under tension and can cause serious personal injury.

  12.  
  13. Compress the spring with the spring compressor then remove the piston rod locknut.
    NOTE
    Before removing the strut from the coil spring, note the positioning of the strut in relationship to the coil spring for reassembly.



    Click image to see an enlarged view

    Fig. Be sure the spring is compressed before removing the piston locknut-1998-2001 G20



    Click image to see an enlarged view

    Fig. Upper spring seat location and alignment-G20

  14.  
  15. Remove or disconnect the following:

    Bushing, strut mounting bracket, and the upper spring seat rubber
     
    Strut, leaving the coil spring compressed
     
    Bushing, bound bumper cover and the bound bumper
     

  16.  

To install:

  1. Install or connect the following:

    Bound bumper, bound bumper cover and the bushing
     
    Strut into the coil spring, make sure the strut and spring are properly positioned
     
    Upper spring seat rubber, strut mounting bracket, and the bushing. Make sure that the mounting bracket is properly positioned

    Click image to see an enlarged view

    Fig. Align the spring seats as shown-1998-2001 G20



    Click image to see an enlarged view

    Fig. Make sure the springs are installed as shown-1998-2001 G20

     



    Piston rod locknut then remove the spring compressor. Torque the locknut to 13-17 ft. lbs. (18-24 Nm)
     
    Strut with new attaching nuts. Torque the nuts to 14-16 ft. lbs. (19-22 Nm)
     
    Strut on the rear torsion beam. Torque the bolt to 80-94 ft. lbs. (108-127 Nm)
     

  2.  
  3. Remove the support from the rear torsion beam.
  4.  
  5. Install the rear wheels and lower the vehicle.
  6.  
  7. Check the vehicle's alignment and adjust as necessary.
  8.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Rear wheels
     

  4.  
  5. Support the rear torsion beam assembly with a jack.
    CAUTION
    Do not remove the center locknut from the strut assembly until the strut is safely compressed.



    2 nuts attaching the strut to the vehicle located inside the trunk
     
    Bolt attaching the strut to the rear torsion beam assembly and remove the strut
     

  6.  
  7. Place the strut assembly in a vise with the special holding tool HT71780000 or in a spring compressor.
    CAUTION
    Do not remove the piston rod locknut, the spring is under tension and can cause serious personal injury.



    Piston rod locknut
     

  8.  
  9. Compress the spring with the spring compressor, then remove the piston rod locknut.
    NOTE
    Before removing the strut from the coil spring, note the positioning of the strut in relationship to the coil spring for reassembly.

  10.  
  11. Remove or disconnect the following:

    Bushing, strut mounting bracket, and the upper spring seat rubber
     
    Strut, leaving the coil spring compressed
     
    Bushing, bound bumper cover, and the bound bumper
     

  12.  

To install:

Click image to see an enlarged view

Fig. Rear strut assembly alignment-I30

  1. Install or connect the following:

    Bound bumper, bound bumper cover, and the bushing
     
    Strut into the coil spring, be sure the strut and spring are properly positioned
     
    Upper spring seat rubber, strut mounting bracket, and the bushing. Be sure that the mounting bracket is properly positioned
     
    Piston rod locknut, then remove the spring compressor. Torque the locknut to 13-17 ft. lbs. (18-24 Nm)
     
    Strut with new attaching nuts. Torque the nuts to 12-16 ft. lbs. (16-22 Nm)
     
    Strut on the rear torsion beam. Torque the bolt to 80-94 ft. lbs. (108-127Nm)
     
    Support from the rear torsion beam
     
    Rear wheels and lower the vehicle
     

  2.  
  3. Check the vehicle's alignment and adjust as necessary.
  4.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:
    WARNING
    Be sure to disconnect the Anti-lock Brake System (ABS) wheel sensor from the assembly. Failure to do so may result in damage to the sensor wire and the sensor becoming inoperative.



    Wheels
     



    Brake calipers and suspend them with a piece of wire. Do not let them hang by the hose.
     

  4.  
  5. Using a transmission jack, raise the torsion beam slightly

    Strut lower mounting bolt
     

  6.  
  7. Open the trunk, remove the trim and remove the two nuts attaching the strut to the vehicle.
    CAUTION
    Do not remove the center locknut from the strut assembly until the strut is safely compressed.



    Strut
     

  8.  
  9. Place the strut assembly in a vise with the special holding tool HT71780000 or in a spring compressor.
  10.  
  11. Loosen the piston rod locknut.
    CAUTION
    Do not remove the piston rod locknut, the spring is under tension and can cause serious personal injury.

  12.  
  13. Compress the spring with the spring compressor then remove the piston rod locknut.
    NOTE
    Before removing the strut from the coil spring, note the positioning of the strut in relationship to the coil spring for reassembly.

  14.  
  15. Remove or disconnect the following:

    Bushing, strut mounting bracket, and the upper spring seat rubber
     
    Strut, leaving the coil spring compressed
     
    Bushing, bound bumper cover and the bound bumper
     

  16.  

To install:

  1. Install or connect the following:

    Bound bumper, bound bumper cover and the bushing
     
    Strut into the coil spring, make sure the strut and spring are properly positioned
     
    Upper spring seat rubber, strut mounting bracket, and the bushing. Make sure that the mounting bracket is properly positioned.
     
    Piston rod locknut then remove the spring compressor. Torque the locknut to 13-17 ft. lbs. (18-24 Nm).
     
    Strut with new attaching nuts. Torque the nuts to 14-16 ft. lbs. (19-22 Nm).
     
    Strut on the rear torsion beam. Torque the bolt to 80-94 ft. lbs. (108-127 Nm).
     

  2.  
  3. Remove the support from the rear torsion beam.
  4.  
  5. Install the rear wheels and lower the vehicle.
  6.  
  7. Check the vehicle's alignment and adjust as necessary.
  8.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Rear wheels
     

  4.  
  5. Support the rear torsion beam assembly with a jack.
    CAUTION
    Do not remove the center locknut from the strut assembly until the strut is safely compressed.



    2 nuts attaching the strut to the vehicle located inside the trunk
     
    Bolt attaching the strut to the rear torsion beam assembly and remove the strut
     

  6.  
  7. Place the strut assembly in a vise with the special holding tool HT71780000 or in a spring compressor.
    CAUTION
    Do not remove the piston rod locknut, the spring is under tension and can cause serious personal injury.



    Piston rod locknut
     

  8.  
  9. Compress the spring with the spring compressor, then remove the piston rod locknut.
    NOTE
    Before removing the strut from the coil spring, note the positioning of the strut in relationship to the coil spring for reassembly.

  10.  
  11. Remove or disconnect the following:

    Bushing, strut mounting bracket, and the upper spring seat rubber
     
    Strut, leaving the coil spring compressed
     
    Bushing, bound bumper cover, and the bound bumper
     

  12.  

To install:

  1. Install or connect the following:

    Bound bumper, bound bumper cover, and the bushing
     
    Strut into the coil spring, be sure the strut and spring are properly positioned

    Click image to see an enlarged view

    Fig. Spring alignment-I35

     
    Upper spring seat rubber, strut mounting bracket, and the bushing. Be sure that the mounting bracket is properly positioned.
     
    Piston rod locknut, then remove the spring compressor. Torque the locknut to 13-17 ft. lbs. (18-24 Nm)
     
    Strut with new attaching nuts. Torque the nuts to 12-16 ft. lbs. (16-22 Nm).
     
    Strut on the rear torsion beam. Torque the bolt to 80-94 ft. lbs. (108-127Nm).
     
    Support from the rear torsion beam
     
    Rear wheels and lower the vehicle
     

  2.  
  3. Check the vehicle's alignment and adjust as necessary.
  4.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Place a transmission jack under the rear axle to remove the fitting bolt and nut in the lower side of the shock absorber.
  4.  
  5. Remove or disconnect the following:

    Rear seat cushion, seat back and rear package shelf finish panel
     
    Fitting nut from the upper side of the shock absorber
     
    Shock absorber from the vehicle
     

  6.  
  7. Installation is the reverse of the removal procedure. Refer to the exploded view for tightening values.
  8.  

  1. Remove tire with power tool.
  2.  
  3. Set jack under rear lower link to remove fixing bolt and nut in lower side of shock absorber with power tool.
  4.  
  5. Remove jack from rear lower link.
  6.  
  7. Remove rear seat cushion, rear seat back and rear parcel shelf finisher.
  8.  
  9. Remove cap and then remove shock absorber mounting bracket fixing nuts of shock absorber upper side and remove shock absorber from vehicle.
  10.  
  11. Check shock absorber for deformation, cracks, damage, and replace if necessary.
  12.  
  13. Check piston rod for damage, uneven wear, distortion, and replace if necessary.
  14.  
  15. Check welded and sealed areas for oil leakage, and replace if necessary.
  16.  

To Install:

  1. Installation is the reverse of removal.
  2.  
  3. Refer to the exploded view for tightening torque. Tighten in the reverse order of removal.
    WARNING
    Refer to component parts location and do not reuse non-reusable parts.

  4.  
  5. Perform final tightening of shock absorber lower side (rubber bushing) under unladen condition with tires on level ground. Check wheel alignment.
  6.  

  1. Remove tire.
  2.  
  3. Set jack under rear lower link to remove fixing bolt in the lower side of shock absorber.
  4.  
  5. Remove jack from rear lower link.
  6.  
  7. Remove rear seat cushion, rear seat back and rear parcel shelf finisher.
  8.  
  9. Remove cap and actuator assembly.
  10.  
  11. Remove fixing nut in the upper side of shock absorber.
  12.  
  13. Check the following: Shock absorber for deformation, cracks, damage, and replace if there are. Piston rod for damage, uneven wear, or distortion, and replace if there are. Welded and sealed areas for oil leakage, and replace if there are.
  14.  

To install:

  1. Installation is the reverse of removal.
    NOTE
    Refer to the exploded view for tightening torque. Install in the reverse order of the removal. Do not reuse non-reusable parts.

  2.  
  3. Perform the final tightening of shock absorber assembly lower side (rubber bushing) under unladen conditions with tires on level ground. Check wheel alignment.
  4.  
  5. After adjusting wheel alignment, adjust neutral of steering angle sensor.
  6.  
  7. Be sure to install actuator assembly correctly as shown in the figures.
    WARNING
    If a strong shock has been given to actuator assembly or if it has been dropped, replace it with a new one.

  8.  



Click image to see an enlarged view

Fig. Component view of the rear suspension-2002 G20



Click image to see an enlarged view

Fig. Component view of the rear suspension-I35



Click image to see an enlarged view

Fig. Component view of the rear suspension-G35



Click image to see an enlarged view

Fig. Component view of the rear suspension-2003-2004 M45



Click image to see an enlarged view

Fig. Component view of the rear suspension-M35



Click image to see an enlarged view

Fig. " Exploded view of the rear suspension-2002-2004 Q45



Click image to see an enlarged view

Fig. " Exploded view of the rear suspension-2005 Q45

Standard Suspension

CAUTION
Do not remove piston rod locknut with the shock absorber on vehicle.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the upper strut mounting nuts.
  4.  
  5. Raise and safely support the vehicle and remove the lower mounting bolt. Remove coil spring/strut absorber assembly.
  6.  
  7. Place the assembly into a suitable holding fixture and matchmark the spring, strut and upper seat. Loosen but do not remove the piston rod locknut.
  8.  
  9. Install a spring compressor and compress the spring until the upper spring seat can be turned by hand.
  10.  
  11. Remove the locknut, spring seat components, spring, bushings and bumper.
  12.  

To install:

  1. Fit the bumper, spring, upper seat and other components onto the strut with the matchmarks aligned. The top of the spring is flat.
  2.  
  3. Install the locknut and torque it to 13-17 ft. lbs. (18-24 Nm) and remove the spring compressor.
  4.  
  5. Install strut assembly. Torque the upper shock mounting nuts to 12-14 ft. lbs. (16-19 Nm) and the lower bolt to 57-72 ft. lbs. (77-98 Nm).
  6.  


CAUTION
Do not remove piston rod locknut with the shock absorber on vehicle.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove the upper strut mounting nuts.
  4.  
  5. Raise and safely support the vehicle and remove the lower mounting bolt. Remove coil spring/strut absorber assembly.
  6.  
  7. Place the assembly into a suitable holding fixture and matchmark the spring, strut and upper seat. Loosen but do not remove the piston rod locknut.
  8.  
  9. Install a spring compressor and compress the spring until the upper spring seat can be turned by hand.
  10.  
  11. Remove the locknut, spring seat components, spring, bushings and bumper.
  12.  

To install:

  1. Fit the bumper, spring, upper seat and other components onto the strut with the matchmarks aligned. The top of the spring is flat.
  2.  
  3. Install the locknut and torque it to 13-17 ft. lbs. (18-24 Nm) and remove the spring compressor.
  4.  
  5. Install strut assembly. Torque the upper shock mounting nuts to 12-14 ft. lbs. (16-19 Nm) and the lower bolt to 57-72 ft. lbs. (77-98 Nm).
  6.  


CAUTION
Do not remove piston rod locknut with the shock absorber on vehicle.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the upper strut mounting nuts.
  4.  
  5. Raise and safely support the vehicle and remove the lower mounting bolt. Remove coil spring/strut absorber assembly.
  6.  
  7. Place the assembly into a suitable holding fixture and matchmark the spring, strut and upper seat. Loosen but do not remove the piston rod locknut.
  8.  
  9. Install a spring compressor and compress the spring until the upper spring seat can be turned by hand.
  10.  
  11. Remove the locknut, spring seat components, spring, bushings and bumper.
  12.  

To install:

  1. Fit the bumper, spring, upper seat and other components onto the strut with the matchmarks aligned. The top of the spring is flat.
  2.  
  3. Install the locknut and torque it to 13-17 ft. lbs. (18-24 Nm) and remove the spring compressor.
  4.  
  5. Install strut assembly. Torque the upper shock mounting nuts to 12-14 ft. lbs. (16-19 Nm) and the lower bolt to 57-72 ft. lbs. (77-98 Nm).
  6.  


CAUTION
Do not remove piston rod locknut with the shock absorber on vehicle.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the upper strut mounting nuts.
  4.  
  5. Raise and safely support the vehicle and remove the lower mounting bolt. Remove coil spring/strut absorber assembly.
  6.  
  7. Place the assembly into a suitable holding fixture and matchmark the spring, strut and upper seat. Loosen but do not remove the piston rod locknut.
  8.  
  9. Install a spring compressor and compress the spring until the upper spring seat can be turned by hand.
  10.  
  11. Remove the locknut, spring seat components, spring, bushings and bumper.
  12.  

To install:

  1. Fit the bumper, spring, upper seat and other components onto the strut with the matchmarks aligned. The top of the spring is flat.
  2.  
  3. Install the locknut and torque it to 13-17 ft. lbs. (18-24 Nm) and remove the spring compressor.
  4.  
  5. Install strut assembly. Torque the upper shock mounting nuts to 12-14 ft. lbs. (16-19 Nm) and the lower bolt to 57-72 ft. lbs. (77-98 Nm).
  6.  

With Full Active Suspension

NOTE
The Nissan Consult or scan tool that can issue commands to the control unit is required for bleeding the hydraulics in the Full Active Suspension system.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Relieve the hydraulic pressure as follows:
    1. Raise and safely support the vehicle with all 4 wheels off the ground and wait at least 3 minutes for the system to stabilize.
    2.  
    3. Remove both front inner fenders and the rear pressure control unit cover.
    4.  
    5. Loosen the locknut and slowly open the bypass valve on each pressure control unit. Do not open the bleeder valves.
    6.  
    7. Open the bypass valves all the way, and leave them open, until the job is finished.
    8.  

  4.  
  5. Remove or disconnect the following:

    Upper mount insulator nuts
     
    Hydraulic lines. Cap the lines to keep the system clean
     
    Lower actuator mounting bolt and remove the actuator/spring assembly
     

  6.  
  7. Secure the actuator/spring assembly in a suitable holding fixture. Scribe alignment marks on the spring, upper mount insulator and actuator unit.
  8.  
  9. Compress the spring with the proper tool. Remove the piston rod locknut lift off the mount insulator, hose joint adapter, spring, and any other components necessary.
  10.  

To install:



Click image to see an enlarged view

Fig. Rear actuator removal with Active Suspension-Q45 models

  1. Fit the bumper and dust cover onto the actuator.
  2.  
  3. Fit the spring into the lower seat with the matchmarks aligned. Install the upper seat, mounting insulator and other components with the marks aligned.
  4.  
  5. Install the locknut and torque to 43-54 ft. lbs. (59-74 Nm).
  6.  
  7. Fit the assembly onto the vehicle. Torque the upper mounting nuts to 12-24 ft. lbs. (16-19 Nm) and the lower mounting bolt to 58-72 ft. lbs. (78-98 Nm).
  8.  
  9. Bleed the system as follows:
    1. With all 4 wheels off the ground, run the engine for about 2 minutes.
    2.  
    3. Connect the scan tool and enter "WORK SUPPORT" mode. Select "4. AIR BLEEDING".
    4.  
    5. Check the fluid level in the reservoir and make it slightly overfilled.
    6.  
    7. Touch "START" on the scan tool. The display will show a regular rise and fall in system pressure that may last for several minutes. When the pressure stabilizes, stop the engine.
    8.  
    9. Connect a clear tube to the air bleeder at the actuator and place the other end in a container. Do not allow fluid to contact the body or the paint will be damaged.
    10.  
    11. Open the bleeder and watch the fluid move through the tube. If there are still air bubbles in the fluid when the flow stops, close the bleeder and check the fluid level. Pressurize the system again and repeat the bleeding process.
    12.  

  10.  


NOTE
The Nissan Consult or scan tool that can issue commands to the control unit is required for bleeding the hydraulics in the Full Active Suspension system.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Relieve the hydraulic pressure as follows:
    1. Raise and safely support the vehicle with all 4 wheels off the ground and wait at least 3 minutes for the system to stabilize.
    2.  
    3. Remove both front inner fenders and the rear pressure control unit cover.
    4.  
    5. Loosen the locknut and slowly open the bypass valve on each pressure control unit. Do not open the bleeder valves.
    6.  
    7. Open the bypass valves all the way, and leave them open, until the job is finished.
    8.  

  4.  
  5. Remove or disconnect the following:

    Upper mount insulator nuts
     
    Hydraulic lines. Cap the lines to keep the system clean
     
    Lower actuator mounting bolt and remove the actuator/spring assembly
     

  6.  
  7. Secure the actuator/spring assembly in a suitable holding fixture. Scribe alignment marks on the spring, upper mount insulator and actuator unit.
  8.  
  9. Compress the spring with the proper tool. Remove the piston rod locknut lift off the mount insulator, hose joint adapter, spring, and any other components necessary.
  10.  

To install:

Click image to see an enlarged view

Fig. Rear actuator removal with Active Suspension-Q45 models

  1. Fit the bumper and dust cover onto the actuator.
  2.  
  3. Fit the spring into the lower seat with the matchmarks aligned. Install the upper seat, mounting insulator and other components with the marks aligned.
  4.  
  5. Install the locknut and torque to 43-54 ft. lbs. (59-74 Nm).
  6.  
  7. Fit the assembly onto the vehicle. Torque the upper mounting nuts to 12-24 ft. lbs. (16-19 Nm) and the lower mounting bolt to 58-72 ft. lbs. (78-98 Nm).
  8.  
  9. Bleed the system as follows:
    1. With all 4 wheels off the ground, run the engine for about 2 minutes.
    2.  
    3. Connect the scan tool and enter "WORK SUPPORT" mode. Select "4. AIR BLEEDING".
    4.  
    5. Check the fluid level in the reservoir and make it slightly overfilled.
    6.  
    7. Touch "START" on the scan tool. The display will show a regular rise and fall in system pressure that may last for several minutes. When the pressure stabilizes, stop the engine.
    8.  
    9. Connect a clear tube to the air bleeder at the actuator and place the other end in a container. Do not allow fluid to contact the body or the paint will be damaged.
    10.  
    11. Open the bleeder and watch the fluid move through the tube. If there are still air bubbles in the fluid when the flow stops, close the bleeder and check the fluid level. Pressurize the system again and repeat the bleeding process.
    12.  

  10.  


NOTE
The Nissan Consult or scan tool that can issue commands to the control unit is required for bleeding the hydraulics in the Full Active Suspension system.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Relieve the hydraulic pressure as follows:
    1. Raise and safely support the vehicle with all 4 wheels off the ground and wait at least 3 minutes for the system to stabilize.
    2.  
    3. Remove both front inner fenders and the rear pressure control unit cover.
    4.  
    5. Loosen the locknut and slowly open the bypass valve on each pressure control unit. Do not open the bleeder valves.
    6.  
    7. Open the bypass valves all the way, and leave them open, until the job is finished.
    8.  

  4.  
  5. Remove or disconnect the following:

    Upper mount insulator nuts
     
    Hydraulic lines. Cap the lines to keep the system clean
     
    Lower actuator mounting bolt and remove the actuator/spring assembly
     

  6.  
  7. Secure the actuator/spring assembly in a suitable holding fixture. Scribe alignment marks on the spring, upper mount insulator and actuator unit.
  8.  
  9. Compress the spring with the proper tool. Remove the piston rod locknut lift off the mount insulator, hose joint adapter, spring, and any other components necessary.
  10.  

To install:

Click image to see an enlarged view

Fig. Rear actuator removal with Active Suspension-1998-2001 Q45

  1. Fit the bumper and dust cover onto the actuator.
  2.  
  3. Fit the spring into the lower seat with the matchmarks aligned. Install the upper seat, mounting insulator and other components with the marks aligned.
  4.  
  5. Install the locknut and torque to 43-54 ft. lbs. (59-74 Nm).
  6.  
  7. Fit the assembly onto the vehicle. Torque the upper mounting nuts to 12-24 ft. lbs. (16-19 Nm) and the lower mounting bolt to 58-72 ft. lbs. (78-98 Nm).
  8.  
  9. Bleed the system as follows:
    1. With all 4 wheels off the ground, run the engine for about 2 minutes.
    2.  
    3. Connect the scan tool and enter "WORK SUPPORT" mode. Select "4. AIR BLEEDING".
    4.  
    5. Check the fluid level in the reservoir and make it slightly overfilled.
    6.  
    7. Touch "START" on the scan tool. The display will show a regular rise and fall in system pressure that may last for several minutes. When the pressure stabilizes, stop the engine.
    8.  
    9. Connect a clear tube to the air bleeder at the actuator and place the other end in a container. Do not allow fluid to contact the body or the paint will be damaged.
    10.  
    11. Open the bleeder and watch the fluid move through the tube. If there are still air bubbles in the fluid when the flow stops, close the bleeder and check the fluid level. Pressurize the system again and repeat the bleeding process.
    12.  

  10.  


NOTE
The Nissan Consult or scan tool that can issue commands to the control unit is required for bleeding the hydraulics in the Full Active Suspension system.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Relieve the hydraulic pressure as follows:
    1. Raise and safely support the vehicle with all 4 wheels off the ground and wait at least 3 minutes for the system to stabilize.
    2.  
    3. Remove both front inner fenders and the rear pressure control unit cover.
    4.  
    5. Loosen the locknut and slowly open the bypass valve on each pressure control unit. Do not open the bleeder valves.
    6.  
    7. Open the bypass valves all the way, and leave them open, until the job is finished.
    8.  

  4.  
  5. Remove or disconnect the following:

    Upper mount insulator nuts
     
    Hydraulic lines. Cap the lines to keep the system clean
     
    Lower actuator mounting bolt and remove the actuator/spring assembly
     

  6.  
  7. Secure the actuator/spring assembly in a suitable holding fixture. Scribe alignment marks on the spring, upper mount insulator and actuator unit.
  8.  
  9. Compress the spring with the proper tool. Remove the piston rod locknut lift off the mount insulator, hose joint adapter, spring, and any other components necessary.
  10.  

To install:

  1. Fit the bumper and dust cover onto the actuator.
  2.  
  3. Fit the spring into the lower seat with the matchmarks aligned. Install the upper seat, mounting insulator and other components with the marks aligned.
  4.  
  5. Install the locknut and torque to 43-54 ft. lbs. (59-74 Nm).
  6.  
  7. Fit the assembly onto the vehicle. Torque the upper mounting nuts to 12-24 ft. lbs. (16-19 Nm) and the lower mounting bolt to 58-72 ft. lbs. (78-98 Nm).

    Click image to see an enlarged view

    Fig. Rear actuator assembly positioning-Q45

  8.  
  9. Bleed the system as follows:
    1. With all 4 wheels off the ground, run the engine for about 2 minutes.
    2.  
    3. Connect the scan tool and enter "WORK SUPPORT" mode. Select "4. AIR BLEEDING".
    4.  
    5. Check the fluid level in the reservoir and make it slightly overfilled.
    6.  
    7. Touch "START" on the scan tool. The display will show a regular rise and fall in system pressure that may last for several minutes. When the pressure stabilizes, stop the engine.
    8.  
    9. Connect a clear tube to the air bleeder at the actuator and place the other end in a container. Do not allow fluid to contact the body or the paint will be damaged.
    10.  
    11. Open the bleeder and watch the fluid move through the tube. If there are still air bubbles in the fluid when the flow stops, close the bleeder and check the fluid level. Pressurize the system again and repeat the bleeding process.
    12.  

  10.  

 
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