Xterra 4WD V6-4.0L (VQ40DE) (2009)
Alignment: Service and Repair
ON-VEHICLE SERVICE
Front Wheel Alignment
PRELIMINARY INSPECTION
WARNING:
Always adjust the alignment with the vehicle on a flat surface.
NOTE:
If alignment is out of specification, inspect and replace any damaged or worn rear suspension parts before making any adjustments.
1. Check and adjust the wheel alignment with the vehicle under unladen conditions. "Unladen conditions" means that the fuel, coolant, and lubricant
are full; and that the spare tire, jack, hand tools and mats are in their designated positions.
2. Check the tires for incorrect air pressure and excessive wear.
3. Check the wheels for run out and damage. Refer to See: Wheels and Tires/Testing and Inspection/Wheel.
4. Check the wheel bearing axial end play. Refer to See: Wheels and Tires/Wheel Hub/Testing and Inspection.
5. Check the shock absorbers for leaks or damage.
6. Check each mounting point of the suspension components for any excessive looseness or damage.
7. Check each link, arm, and the suspension member for any damage.
8. Check the vehicle height. Refer to See: Specifications/Ride Height (Unladen).
GENERAL INFORMATION AND RECOMMENDATIONS
1. A Four-Wheel Thrust Alignment should be performed.
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This type of alignment is recommended for any NISSAN vehicle.
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The four-wheel "thrust" process helps ensure that the vehicle is properly aligned and the steering wheel is centered.
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The alignment machine itself should be capable of accepting any NISSAN vehicle.
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The alignment machine should be checked to ensure that it is level.
2. Make sure the alignment machine is properly calibrated.
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Your alignment machine should be regularly calibrated in order to give correct information.
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Check with the manufacturer of your specific alignment machine for their recommended Service/Calibration Schedule.
THE ALIGNMENT PROCESS
IMPORTANT: Use only the alignment specifications listed. Refer to See: Specifications/Wheel Alignment (Unladen).
1. When displaying the alignment settings, many alignment machines use "indicators": (Green/red, plus or minus, Go/No Go). Do NOT use
these indicators.
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The alignment specifications programmed into your alignment machine that operate these indicators may not be correct.
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This may result in an ERROR.
2. Some newer alignment machines are equipped with an optional "Rolling Compensation" method to "compensate" the sensors (alignment
targets or head units). Do NOT use this "Rolling Compensation" method.
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Use the "Jacking Compensation" method. After installing the alignment targets or head units, raise the vehicle and rotate the wheels 1/2
turn both ways.
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See Instructions in the alignment machine you are using for more information.
CAMBER AND CASTER
1. Measure camber and caster of both the right and left wheels with a suitable alignment gauge and adjust as necessary to specification.
Camber : Refer to See: Specifications/Wheel Alignment (Unladen).
NOTE:
Some vehicles may be equipped with straight (non-adjustable) lower link bolts and washers. In order to adjust camber and caster on these vehicles,
first replace the lower link bolts and washers with adjustable (cam) bolts and washers.