2009 INFINITI QX56 maintenance

CHASSIS AND BODY MAINTENANCEMA-27
< ON-VEHICLE MAINTENANCE >
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Changing Front Final Drive OilINFOID:0000000004215542
DRAINING
1. Stop the engine.
2. Remove the drain plug from the front final drive assembly to drain the differential gear oil.
3. Install the drain plug with sealant applied on the thr
eads to the front final drive assembly. Tighten to the
specified torque. Refer to DLN-217, "
Disassembly and Assembly".
• Use High Performance Thread Sealant or equivalent. Refer to GI-15, "
Recommended Chemical Prod-
ucts and Sealants".
FILLING
1. Remove the filler plug from the front final drive assembly.
2. Fill the front final drive assembly with new differential gear oil
until the level reaches the specified level near the filler plug hole.
3. Install the filler plug with sealant applied on the threads to the front final drive assembly. Tighten to the specified torque. Refer
to DLN-217, "
Disassembly and Assembly".
• Use High Performance Thread Sealant or equivalent. Refer to
GI-15, "
Recommended Chemical Products and Sealants".
Checking Rear Final Drive OilINFOID:0000000004215543
OIL LEAKAGE AND OIL LEVEL
1. Make sure that differential gear oil is not leaking from the rear final drive assembly or around it.
2. Check the differential gear oil level from the filler plug hole as shown.
CAUTION:
Do not start engine while checki ng differential gear oil level.
3. Install the filler plug with a new gasket on it to the rear final drive assembly. Tighten to the specified torque. Refer to DLN-253,
"Disassembly and Assembly".
CAUTION:
Do not reuse gasket.
Changing Rear Final Drive OilINFOID:0000000004215544
DRAINING
1. Stop the engine.
2. Remove the drain plug and gasket from the rear final drive assembly to drain the differential gear oil.
3. Install the drain plug with a new gasket to the rear final drive assembly. Tighten to the specified torque. Refer to DLN-253,
"Disassembly and Assembly".
CAUTION:
Do not reuse gasket.
FILLING
Differential gear oil
grade and capacity : Refer to
MA-12, "Fluids
and Lubricants".
LDIA0176E
LLIA0068E
LLIA0068E
Revision: December 20092009 QX56

MA-28
< ON-VEHICLE MAINTENANCE >
CHASSIS AND BODY MAINTENANCE
1. Remove the filler plug and gasket from the rear final driveassembly.
2. Fill the rear final drive assembly with new differential gear oil until the level reaches the specified level near the filler plug hole.
3. Install the filler plug with a new gasket on it to the rear final drive assembly. Tighten to the specified torque. Refer to DLN-253,
"Disassembly and Assembly".
CAUTION:
Do not reuse gasket.
Balancing WheelsINFOID:0000000004215547
BALANCING WHEELS (ADHESIVE WEIGHT TYPE)
Preparation Before Adjustment
Remove inner and outer balance weights from the road wheel using releasing agent, remove double-faced
adhesive tape from the road wheel.
CAUTION:
• Be careful not scratch the road wheel during removal.
• After removing double-faced adhesive tape, wipe clean traces of releasing agent from the road
wheel.
Wheel Balance Adjustment
CAUTION:
• Use center hole cone-type clamping machines due to clad wheels.
• If a balancer machine has an adhesive weight mode se tting, select the adhesive weight mode setting and
skip Step 2. below. If a balancer machine only has the clip-on (rim flange) weight mode setting, follow Step 2.
to calculate the correct size adhesive weight.
1. Set road wheel on balancer machine using the center hole as a guide. Start the balancer machine.
2. For tire balance machines that only have a clip-on (rim flange) weight mode setting, follow this step to cal- culate the correct size adhesive weight to use. When inner and outer imbalance values are shown on the
balancer machine indicator, multiply outer imbalance value by 5/3 (1.67) to determine balance weight that
should be used. Select the outer balance weight with a value closest to the calculated value above and
install in to the designated outer position of, or at the designated angle in relation to the road wheel.
a. Indicated imbalance value × 5/3 (1.67) = balance weight to be
installed
Calculation example:
23 g (0.81 oz) × 5/3 (1.67) = 38.33 g (1.35 oz) ⇒ 40 g (1.41 oz)
balance weight (closer to calculated balance weight value)
NOTE:
Note that balance weight value must be closer to the calculated
balance weight value.
Example:
37.4 ⇒ 35 g (1.23 oz)
37.5 ⇒ 40 g (1.41 oz)
Differential gear oil
grade and capacity
: Refer to MA-12, "
Fluids and
Lubricants".
LLIA0068E
SMA054D
Revision: December 20092009 QX56

CHASSIS AND BODY MAINTENANCEMA-29
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3. Install balance weight in the position shown.
CAUTION:
• Do not install the inner bala nce weight before installing
the outer balance weight.
• Before installing the balance weight, be sure to clean the mating surface of the road wheel.
• When installing balance weight (1) to road wheel, set it into the grooved area (A) on the inner wall of the road wheel as shown
so that the balance weight cent er (B) is aligned with the bal-
ancer machine indication position (angle) (C).
CAUTION:
• Always use genuine NISSAN adhesive balance weights.
• Balance weights are non-re usable; always replace with
new ones.
• Do not install more than th ree sheets of balance weight.
4. If calculated balance weight value exceeds 50 g (1.76 oz), install two balance weight sheets in line with each other as shown.
CAUTION:
Do not install one balance weight sheet on top another.
5. Start balancer machine again.
6. Install balance weight on inner side of road wheel in the bal- ancer machine indication position (angle).
CAUTION:
Do not install more than two balance weights.
7. Start balancer machine. Make sure that inner and outer residual imbalance values are 5 g (0.17 oz) each or below.
8. If either residual imbalance value exceeds 5 g (0.17 oz), repeat installation procedures.
RotationINFOID:0000000004215548
TIRE ROTATION
• Follow the maintenance schedule for tire rotation service intervals.
Refer to MA-6, "
General Maintenance".
• When installing the wheel, tighten wheel nuts to the specified
torque.
CAUTION:
• Do not include the spare tire when rotating the tires.
• When installing wheels, tighte n them diagonally by dividing
the work two to three times in order to prevent the wheels
from developing any distortion.
• Be careful not to tighten wh eel nut at torque exceeding the
criteria for preventing strain of disc rotor.
• Use NISSAN genuine wheel nuts for aluminum wheels.
JPEIC0040ZZ
Wheel balance Dynamic (At flange) Static (At flange)
Maximum allowable un-
balance Refer to WT-45, "
Road Wheel".
PEIA0033E
SMA829C
Revision: December 20092009 QX56

MA-30
< ON-VEHICLE MAINTENANCE >
CHASSIS AND BODY MAINTENANCE
Checking Brake Fluid Level and Leaks
INFOID:0000000003777006
• Check the brake fluid level in the reservoir tank. It should be between the “MAX” and “MIN” lines on the reservoir tank.
• If the fluid level is extremely low, check the brake system.
• If the brake warning lamp comes on when the fluid is at the correct level, check the brake fluid level switch and the parking brake
switch.
• Visually check around reservoir tank for fluid leaks.
Checking Brake Line and CablesINFOID:0000000003777007
1. Check the brake lines and hoses for cracks, deterioration, and other damage. Replace any damaged parts.
CAUTION:
If brake fluid leaks are visible around the brake line joints,
retighten the joint, or replace damaged parts as necessary.
2. Check for brake fluid leaks by fully depressing brake pedal while engine is running.
Checking Disc BrakeINFOID:0000000003777008
ROTOR
Check the rotor condition for wear or damage. Refer to BR-7, "DISC
ROTOR : Inspection" , BR-9, "DISC ROTOR : Inspection" .
CALIPER
Check the caliper for any l eaks, repair as necessary.
Wheel nut tightening
torque
: 133 N·m (14 kg-m, 98 ft-lb)
LFIA0225E
SBR389C
SMA260A
SMA922A
Revision: December 20092009 QX56

CHASSIS AND BODY MAINTENANCEMA-31
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PA D
Check the pads for wear or damage. Refer to
BR-7, "BRAKE PAD :
Inspection" , BR-9, "BRAKE PAD : Inspection" .
Checking Steering Ge ar and LinkageINFOID:0000000003777009
STEERING GEAR
• Check the steering gear housing for looseness, damage and oil
leakage as shown.
• Check the steering column connections for looseness.
STEERING LINKAGE
• Check the ball joint, dust cover and other component parts for looseness, wear, damage, and grease leak-
age.
Checking Power Steering Fluid and LineINFOID:0000000003777010
CHECKING FLUID LEVEL
• Check the power steering fluid level with the engine off.
• Check fluid level on reservoir. Use “HOT” range at fluid tempera- tures of 50 ° to 80° C (122° to 176° F). Use “COLD” range at fluid
temperatures of 0 ° to 30° C (32° to 86° F).
CAUTION:
• Do not overfill.
• Refer to MA-12, "
Fluids and Lubricants" .
CHECKING LINES
• Check lines for improper attachment, leaks, cracks, damage, loose
connections, chafing, and deterioration.
LMA051
SGIA0506E
LGIA0021E
SGIA0506E
Revision: December 20092009 QX56

MA-32
< ON-VEHICLE MAINTENANCE >
CHASSIS AND BODY MAINTENANCE
Checking Axle and Suspension Parts
INFOID:0000000003777011
FRONT AND REAR AXLE AND SUSPENSION PARTS
Check front and rear axle and suspension parts for excessive play, cracks, wear or other damage.
• Shake each wheel to check for excessive play.
• Rotate each wheel to check for abnormal noise.
• Check the axle and suspension nuts and bolts for looseness.
• Check the strut and shock absorber for oil leakage or other damage.
• Check the suspension ball joints for grease leakage and ball joint dust cover for cracks or other damage.
DRIVE SHAFT
Check the boots and drive shaft for cracks, wear, damage, and
grease leakage.
SMA525A
SFA901
Revision: December 20092009 QX56

CHASSIS AND BODY MAINTENANCEMA-33
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Lubricating Locks, Hin
ges and Hood LatchesINFOID:0000000003777012
Lubricate the locks, hinges, and latches at the locations as shown. Refer to MA-12, "Fluids and Lubricants" .
Checking Seat Belts, Buckles, Re tractors, Anchors and AdjustersINFOID:0000000003777013
Check the seat belt buckles, webbing, retractors, anc hors and adjusters. Replace any seat belt assembly as
necessary. Refer to SB-11, "
Seat Belt Inspection".
• Check the seat belt anchors for loose mounting bolts, damage, or excessive wear.
• Check the seat belt webbing for any damage, cuts, fraying, or excessive wear.
• Check the retractor for smooth operation.
• Check the function of the buckles by inserting the seat belt tongue and checking for proper engagement of
the buckle and press the button on the buckle to c heck for proper release of the seat belt tongue.
WLIA0024E
Revision: December 20092009 QX56

MA-34
< ON-VEHICLE MAINTENANCE >
CHASSIS AND BODY MAINTENANCE
WARNING:
• After any collision, inspect all seat belt assemblies, including retractors and other attached compo-nents, such as the guide rail set. NISSAN recommends replacing all seat belt assemblies in use dur-
ing a collision, unless they are not damaged an d are inspected to confirm they are operating
properly after a minor collision.
Also inspect all seat belt assemblies that are not in use during a collision, and replace any compo-
nents if damaged or not operating properly. The seat belt pre-tensioner should be replaced even if
the seat belts are not in use during a frontal collision where the driver and passenger air bags have
been deployed.
• If any component of the seat belt assembly is suspected of being damaged or not operating prop-
erly, do not repair the component. Replace the components as an assembly.
• If the seat belt webbing is cut, frayed, or damaged then replace the seat belt assembly.
• Never lubricate the seat belt buckle or tongue.
• When replacing any seat belt assembly al ways use a Genuine NISSAN seat belt assembly.
Revision: December 20092009 QX56