Nissan GT-R. Instruction — part 129
PRECAUTIONS
FSU-5
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• 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
1.
Set front wheels in a straight-ahead position.
2.
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)
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WHEEL ALIGNMENT
FSU-7
< PERIODIC MAINTENANCE >
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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
.
• 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 Instruction.
• 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
2
, 36 psi). After adjusting wheel
alignment, adjust tire pressure to the specified value. Refer to
.
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
: Refer to
PACK-SPECIFIC SUSPENSION : Wheel
Alignment"
(Except track pack-specific
SPECIFIC SUSPENSION : Wheel Align-
ment"
(Track pack-specific suspension).
Camber
SPECIFIC SUSPENSION : Wheel Align-
ment"
(Except track pack-specific suspen-
sion),
(Track
pack-specific suspension).
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Caster
: Refer to
PACK-SPECIFIC SUSPENSION : Wheel
Alignment"
(Except track pack-specific
suspension),
SPECIFIC SUSPENSION : Wheel Align-
ment"
(Track pack-specific suspension).
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