Inspection and Adjustment

ON-VEHICLE SERVICE 

• Check the suspension parts for excessive play, cracks, wear or damage. Shake each front wheel to check for excessive play.
• Retighten all nuts and bolts to the specified torque.
• Make sure that each cotter pin is installed.
• Check the wheelarch height. Refer to Wheelarch Height .

COMPONENT PART 

Check the front suspension for the following:

• Check each component for looseness or play.
• Inspect each component for abnormal wear or damage.

Ball Joint Axial End Play 

1. Set front wheels in a straight-ahead position.
2. Check ball joint boot for cracks or other damage. If there are cracks or other damage replace transverse link.
3. Move axle side of transverse link up and down by hand. Check there is no end play.

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   CAUTION:

   • Do not depress brake pedal when measuring.
   • Do not perform with tires on level ground.
   • Be careful not to damage ball joint boot. Do not apply excessive force.

Oil Leakage Inspection 

• If oil (A) does not extend beyond the spring seat (B) or upper half (C) of strut/shock absorber (1), this is slight oil seepage and the strut/shock absorber should not be replaced.

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• If oil (A) does extend beyond the spring seat (B) or upper half (C) of strut/shock absorber (1) as shown in the illustration, perform the following.

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  - Use a finger to touch the oil that has extended beyond the spring seat or upper half of strut/shock absorber.- If the oil layer is thick and contains large pieces of dust and debris, replace the strut/shock absorber.- If the oil is thin and does not contain large pieces of dust and debris, do not replace the strut/shock absorber.

  NOTE: If strut/shock absorber leakage is diagnosed in one strut/shock absorber, do not automatically replace both sides. Replace only the leaking strut/shock absorber. 

WHEEL ALIGNMENT 

Description 

Measure wheel alignment under unladen conditions.

General Information and Recommendations 

• A four-wheel thrust alignment should be performed.
  • This type of alignment is recommended for any 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 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.

Preliminary Check 

Check the following:

1. Tires for improper air pressure and wear.
2. Road wheels for runout. Refer to Inspection .
3. Wheel bearing axial end play.
4. Transverse link ball joint axial end play.
5. Shock absorber operation.
6. Each mounting part of axle and suspension for looseness and deformation.
7. Each of suspension member, shock absorber, upper link and transverse link for cracks, deformation and other damage.
8. Vehicle height (posture).

Alignment Process 

IMPORTANT:  Use only the alignment specifications listed in this Service Information.

• When displaying the alignment settings, many alignment machines use "indicators" Do not use these indicators.  : (Green/red, plus or minus, Go/No Go).
  • The alignment specifications programmed into your machine that operate these indicators may not be correct.
  • This may result in an ERROR.

• Most camera-type alignment machines are equipped with both "Rolling Compensation" method and optional "Jacking Compensation" method to "compensate" the alignment targets or head units. "Rolling Compensation" is the preferred method.
  • If using the "Rolling Compensation" method, after installing the alignment targets or head units, push or pull on the rear wheel to move the vehicle. Do not push or pull the vehicle body.
  • If using the "Jacking Compensation" method, after installing the alignment targets or head units, raise the vehicle and rotate the wheels 1/2 turn both ways.
    NOTE: Do not use the "Rolling Compensation" method if you are using sensor-type alignment equipment.
  • Follow all instructions for the alignment machine you're using for more information.

CAMBER, CASTER AND KINGPIN INCLINATION ANGLES INSPECTION 

Before inspection, set the front wheels onto a turning radius gauge. Set the rear wheels onto a pad that has the same height so the vehicle will remain horizontal.

TOTAL TOE-IN INSPECTION 

Measure the total toe-in using the following procedure.

1. Bounce the front of vehicle up and down to stabilize the vehicle height (posture).
2. Push on the rear wheel to move the 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.

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4. Measure the distance (A) from the rear side.

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5. Push on the rear wheel to move the vehicle slowly ahead and to rotate the wheels 180 degrees (1/2 turn).
   CAUTION:

   If the wheels have rotated more than 180 degrees (1/2 turn), try the above procedure again from the beginning. Do not push vehicle backward.

6. Measure the distance (B) from the front side.
7. Use the formula below to calculate total toe-in.

   Total toe-in formula	: A - B
   Total toe-in specification	: Refer to Wheel Alignment (Unladen*1) .

TOE-IN ADJUSTMENT (Without Direct Adaptive Steering System) 

1. Loosen the inner socket locknut (A).

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   CAUTION:

   To prevent damage, hold outer socket (1) across flats using suitable tool while loosening inner socket lock nut.

2. Adjust the toe using the inner socket.
   CAUTION:

   Always evenly adjust toe using LH and RH inner sockets alternately and adjust the total toe-in to the standard.

   Total toe-in

   : Refer to Wheel Alignment (Unladen*1) .

3. Tighten the inner socket locknut. Refer to Exploded View .
   CAUTION:

   • To prevent damage, hold outer socket across flats using suitable tool while tightening inner socket lock nut.
   • Inspect to make sure no boot deformation has occurred during toe-in adjustment. Adjust boot as necessary.
4. After toe-in adjustment, adjust neutral position of steering angle sensor. Refer to Description .

TOE-IN ADJUSTMENT (With Direct Adaptive Steering System) 

ALIGNMENT TESTER. Refer to Inspection and Adjustment . EXCEPT ALIGNMENT TESTER. Refer to Inspection and Adjustment .