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Nissan GT-R. Manual - part 129

PRECAUTIONS

FSU-5

< PRECAUTION >

FSU

• Clean mounting surface to prevent any foreign matter, steel powder or others from being mixed in. Always

apply the specified adhesive when installing.

• Corrosion by stray current corrosion may occur when installing with any other bolts than the specified bolt.

Always use the specified bolt that is surface treated.

• When loosening the specified bolt that is tightened, the treated surface may peel. Never reuse the specified

bolt that is tightened once.

TIGHTENING TORQUE CONTROL

Material made of aluminum die-casting parts is soft in term of hardness. Tightening torque must be controlled
exactly as specified. Always use a torque wrench to install any part to the specified tightening torque.

WARNING:

Never use a power tool to remove or tighten bolts for aluminum die-casting part to prevent damage to
aluminum die-casting parts.

General Precautions

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CAUTION:

After finishing servicing, check that all the tools and waste are stored in a customary place.

FSU-6

< PERIODIC MAINTENANCE >

FRONT SUSPENSION ASSEMBLY

PERIODIC MAINTENANCE

FRONT SUSPENSION ASSEMBLY

Inspection

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MOUNTING INSPECTION

Check the mounting conditions (looseness, backlash) of each component and component conditions (wear,
damage) are normal.

Ball Joint Axial End Play

Set front wheels in a straight-ahead position.

Move axle side of transverse link and upper link in the axial
direction by hand. Check there is no end play.

CAUTION:

• Never depress brake pedal when measuring.
• Never perform with tires on level ground.
• Be careful not to damage ball joint boot. Never damage

the installation position by applying excessive force.

SHOCK ABSORBER

Check for oil leakage and damage. Replace it if necessary.

Axial end play

: 0 mm (0 in)

JSEIA0444ZZ

WHEEL ALIGNMENT

FSU-7

< PERIODIC MAINTENANCE >

FSU

WHEEL ALIGNMENT

Inspection

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DESCRIPTION

CAUTION:

• Kingpin inclination angles cannot be adjusted.
• If kingpin inclination angle is outside the standard, check front suspension parts for wear and dam-

age. Replace suspect parts if a malfunction is detected.

• Kingpin inclination angle is reference value, no inspection is required.
• Measure wheel alignment under unladen conditions.
NOTE:
“Unladen conditions” means that fuel, engine coolant, and lubricant are full. Jack, hand tools and mats are in
designated positions.

PRELIMINARY CHECK

Check the following:
• Tires for improper pressure and wear.
• Wheel bearing axial end play. Refer to

FAX-5, "Inspection"

• Transverse link or upper link ball joint axial end play.
• Shock absorber operation.
• Each mounting part of axle and suspension for looseness and deformation.
• Each of front suspension member, shock absorber, upper link and transverse link for cracks, deformation

and other damage.

• Vehicle height (posture).

GENERAL INFORMATION AND RECOMMENDATIONS

• A four-wheel thrust alignment should be performed.
- This type of alignment is recommended for any NISSAN/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 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 calibrated in order to give correct information.
- Check with the manufacturer of your specific equipment for their recommended Service/Calibration Sched-

ule.

ALIGNMENT PROCESS

IMPORTANT:
Use only the alignment specifications 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.
• See instructions in the alignment machine.

Adjustment

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CAUTION:

• This work is recommended to be performed by GT-R certified NISSAN dealer.
• Adjust wheel alignment with the vehicle in customer's regular use condition (e.g. normal stock

items), with the fuel in full-tank condition, and with no one in the vehicle.

• To adjust wheel alignment, set tire pressure at 250 kPa (2.5 kg/cm

, 36 psi). After adjusting wheel

alignment, adjust tire pressure to the specified value. Refer to

WT-13, "Tire"

TOE-IN

Loosen the steering outer socket, and then adjust the length using steering inner socket.

FSU-8

< PERIODIC MAINTENANCE >

WHEEL ALIGNMENT

CAUTION:

• Always evenly adjust both toe-in alternately and adjust the difference between the left and right to

the standard.

• Always fix the steering inner socket when tightening the steering outer socket.
• Always adjust to toe-in. The toe changes, depending on an attitude change or a permanent set of

bush. Accordingly, the state of the front wheels change to toe-out and the rear wheels, toe-in. If the
wheels change to toe-out, tire partial wear is accelerated and local heating may be accelerated in the
inner side of tires.

• Always adjust toe-in to 1.5 mm (0.059 in) or less because too much toe-in may promote local heat

generation.

• Engaging in performance driving on a racetrack and ultra-high-speed driving, be sure to adjust toe-

in to 1.5 mm (0.059 in) or less. If used beyond this range, it is not covered by the warranty.

CAMBER

Loosen the mounting nut of transverse link (1) and front suspension
member, and then adjust using adjust bolt (2).

CAUTION:

Always hold the adjust bolt firmly when tightening nut.

CASTER

Remove the upper link mounting bolts (body side), and then adjust
them using the thickness (increasing and decreasing) of shims (A).

CAUTION:

Toe-in