check oil INFINITI QX56 2007 Factory Service Manual

FFD-2
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Servicing Front Final DriveINFOID:0000000003532584
• Before starting diagnosis of the vehicle, understand the symptoms well. Perform correct and systematic
operations.
• Check for the correct installation status prior to removal or disassembly. When matching marks are required,
be certain they do not interfere with the function of the parts they are applied to.
• Overhaul should be done in a clean work area, a dust proof area is recommended.
• Before disassembly, completely remove sand and mud from the exterior of the unit, preventing them from
entering into the unit during disassembly or assembly.
• Always use shop paper for cleaning the inside of components.
• Avoid using cotton gloves or a shop cloth to prevent the entering of lint.
• Check appearance of the disassembled parts for damage, deformation, and abnormal wear. Replace them
with new ones if necessary.
• Gaskets, seals and O-rings should be replaced any time the unit is disassembled.
• Clean and flush the parts sufficiently and blow them dry.
• Be careful not to damage sliding surfaces and mating surfaces.
• When applying sealant, remove the old sealant from the mating surface; then remove any moisture, oil, and
foreign materials from the application and mating surfaces.
• In principle, tighten nuts or bolts gradually in several steps working diagonally from inside to outside. If a
tightening sequence is specified, observe it.
• During assembly, observe the specified tightening torque.
• Add new differential gear oil, petroleum jelly, or multi-purpose grease, as specified.

DIFFERENTIAL GEAR OIL
FFD-7
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DIFFERENTIAL GEAR OIL
Changing Differential Gear OilINFOID:0000000003532588
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 threads to the front final drive assembly. Tighten to the
specified torque. Refer to FFD-13, "
Disassembly and Assembly".
• Use High Performance Thread Sealant or equivalent. Refer to GI-45, "
Recommended Chemical Product
and Sealant".
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 FFD-13, "
Disassembly and Assembly".
• Use High Performance Thread Sealant or equivalent. Refer to
GI-45, "
Recommended Chemical Product and Sealant".
Checking Differential Gear OilINFOID:0000000003532589
DIFFERENTIAL GEAR OIL LEAKAGE AND LEVEL
1. Make sure that differential gear oil is not leaking from the front 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 checking differential gear oil level.
3. Install the filler plug with sealant applied on the threads to the
front final drive assembly. Tighten to the specified torque. Refer
to FFD-13, "
Disassembly and Assembly".
• Use High Performance Thread Sealant or equivalent. Refer to
GI-45, "
Recommended Chemical Product and Sealant". Differential gear oil
grade and capacity: Refer to MA-10, "
Fluids
and Lubricants".
LDIA0176E
LDIA0176E

FRONT OIL SEAL
FFD-9
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INSTALLATION
1. Apply multi-purpose grease to the lips of the new front oil seal.
Then drive the new front oil seal in evenly to the gear carrier
using Tool.
CAUTION:
• Do not reuse front oil seal.
• Do not incline the new front oil seal when installing.
• Apply multi-purpose grease to the lips of the new front oil
seal.
2. Install the companion flange to the drive pinion while aligning the matching marks.
3. Apply anti-corrosive oil to the threads of the drive pinion and the
seating surface of the new drive pinion lock nut. Then adjust the
drive pinion lock nut tightening torque using Tool A, and check
the total preload torque using Tool B.
• The total preload torque should be within the total preload
torque specification. When not replacing the collapsible
spacer, it should also be equal to the measurement taken dur-
ing removal plus an additional 0.56 N·m (0.06 Kg-m, 5 in-lb).
• If the total preload torque is low, tighten the drive pinion lock
nut in 6.8 N·m (0.69 Kg-m, 5ft-lb) increments until the total pre-
load torque is met.
CAUTION:
• Do not reuse drive pinion lock nut.
• Apply anti-corrosive oil to the threads of the drive pinion
and the seating surface of the new drive pinion lock nut.
• Adjust the drive pinion lock nut tightening torque to the
lower limit first. Do not exceed the drive pinion lock nut
specified torque. Refer to FFD-13, "
Disassembly and Assembly".
• Do not loosen drive pinion lock nut to adjust the total preload torque. If the drive pinion lock nut
torque or the total preload torque exceeds the specifications, replace the collapsible spacer and
tighten it again to adjust. Refer to FFD-13, "
Disassembly and Assembly".
• After adjustment, rotate drive pinion back and forth 2 to 3 times to check for unusual noise, rota-
tion malfunction, and other malfunctions.
4. Installation of the remaining components is in the reverse order of removal.
CAUTION:
Check the differential gear oil level after installation. Refer to FFD-7
. Tool number : KV38100500 (J-25273)
BDIA0003E
Tool number A: KV38108300 ( — )
B: ST3127S000 (J-25765-A)
Total preload torque: Refer to FFD-13, "
Disassem-
bly and Assembly".
WDIA0381E

FFD-10
< SERVICE INFORMATION >
SIDE OIL SEAL
SIDE OIL SEAL
Removal and InstallationINFOID:0000000003532591
REMOVAL
1. Remove the front final drive assembly. Refer to FFD-12, "Removal and Installation".
2. Remove the differential side shaft and differential side flange
using suitable tool.
3. Place a small hole in the side oil seal case using suitable tool.
4. Remove the side oil seal using Tool as shown.
INSTALLATION
1. Apply multi-purpose grease to the lips of the new side oil seal. Then drive the new side oil seal in evenly to
the gear carrier using suitable tool.
CAUTION:
• Do not reuse side oil seal.
• Do not incline the new side oil seal when installing.
• Apply multi-purpose grease to the lips of the new side oil seal.
2. Installation of the remaining components is in the reverse order of removal.
CAUTION:
Check the differential gear oil level after installation. Refer to FFD-7
.
BDIA0006E
LDIA0129E
Tool number : SP8P
LDIA0130E

FRONT FINAL DRIVE ASSEMBLY
FFD-17
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1. Fit a dial indicator to the drive gear face to measure the back-
lash.
• If the backlash is outside of the specification, adjust each side
bearing adjuster.
CAUTION:
Do not change the side bearing adjusters by different
amounts as it will change the side bearing preload torque.
Companion Flange Runout
1. Rotate companion flange and check for runout on the compan-
ion flange face (inner side of the bolt holes) and companion
flange inner side (socket diameter) using suitable tool.
2. If the runout is outside the runout limit, follow the procedure
below to adjust.
a. Rotate the companion flange on the drive pinion by 90°, 180°
and 270° while checking for the position where the runout is minimum.
b. If the runout is still outside of the runout limit after the companion flange has been rotated on the drive pin-
ion, possible cause could be an assembly malfunction of drive pinion and drive pinion bearing or a mal-
functioning drive pinion bearing.
c. If the runout is still outside of the runout limit after repair of the assembly of drive pinion and drive pinion
bearing or drive pinion bearing, replace the companion flange.
DISASSEMBLY
Differential Assembly
1. Drain the differential gear oil if necessary.Backlash: 0.12 - 0.20 mm (0.0050 - 0.0079 in)
SPD513
If the backlash is greater than specification:
Loosen side bearing adjuster A and tighten side bear-
ing adjuster B by the same amount.
If the backlash is less than specification:
Loosen side bearing adjuster B and tighten side bear-
ing adjuster A by the same amount.
SDIA2262E
Runout limit
Companion flange face: 0.10 mm (0.0039 in)
Companion flange inner side: 0.13 mm (0.0051 in)
SDIA2078E

FRONT FINAL DRIVE ASSEMBLY
FFD-27
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10. Apply anti-corrosive oil to the threads of the drive pinion and the
seating surface of the new drive pinion lock nut. Then adjust the
drive pinion lock nut tightening torque using Tool A, and check
the drive pinion bearing preload torque using Tool B.
CAUTION:
• Do not reuse drive pinion lock nut.
• Apply anti-corrosive oil to the threads of the drive pinion
and the seating surface of the new drive pinion lock nut.
• Adjust the drive pinion lock nut tightening torque to the
lower limit first. Do not exceed the drive pinion lock nut
specified torque.
• If the drive pinion bearing preload torque exceeds the
specified value, replace collapsible spacer and tighten it
again to adjust. Do not loosen drive pinion lock nut to
adjust the drive pinion bearing preload torque.
• After adjustment, rotate drive pinion back and forth 2 to 3
times to check for unusual noise, rotation malfunction,
and other malfunctions.
11. Check companion flange runout.
12. Install the differential case assembly.
Differential Assembly
1. Install side gear thrust washers with the same thickness as the
ones installed prior to disassembly, or reinstall the old ones on
the side gears.
2. Install the side gears and side gear thrust washers into the dif-
ferential case.
3. Install the pinion mate thrust washers to the two pinion mate
gears. Then install the pinion mate gears with the pinion mate
thrust washers by aligning them in diagonally opposite positions
and rotating them into the differential case.Tool number A: KV38108300 (J-44195)
B: ST3127S000 (J-25765-A)
Drive pinion bearing preload torque:
2.3 - 3.4 N·m (24 - 34 kg-cm, 21 - 30 in-lb)
WDIA0382E
SDIA0193J
SDIA2025E

FRONT FINAL DRIVE ASSEMBLY
FFD-29
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10. Install side bearing adjusters into gear carrier.
11. Apply differential gear oil to the side bearings, and install the dif-
ferential case assembly with the side bearing outer races into
the gear carrier.
CAUTION:
Do not reuse side bearing outer race when replacing side
bearing inner race (replace as a set).
12. Install the side bearing caps with the matching marks aligned.
NOTE:
Do not tighten at this step. This allows further tightening of side
bearing adjusters.
13. Tighten each side bearing adjuster alternately turning drive gear.
14. Check and adjust tooth contact, backlash, drive gear runout and total preload torque.
Recheck above items.
• After adjusting tooth contact and backlash secure side bearing
adjuster with screws and tighten side bearing cap bolt to the
specified torque.
15. Apply multi-purpose grease to the lips of the new side oil seal. Then drive the new side oil seal in evenly to
the gear carrier using suitable tool.
CAUTION:
• Do not reuse side oil seal.
• Do not incline the new side oil seal when installing.
• Apply multi-purpose grease to the lips of the new side oil seal.
SPD527
PDIA0700E
SDIA2265E
SDIA2263E

FSU-2
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
PrecautionINFOID:0000000003532631
• When installing the rubber bushings, the final tightening must be done under unladen condition and with the
tires on level ground. Oil will shorten the life of the rubber bushings, so wipe off any spilled oil immediately.
• Unladen condition means the fuel tank, engine coolant and lubricants are at the full specification. The spare
tire, jack, hand tools, and mats are in their designated positions.
• After installing suspension components, check the wheel alignment.
• Lock nuts are not reusable. Always use new lock nuts for installation. New lock nuts are pre-oiled, do not
apply any additional lubrication.

FSU-6
< SERVICE INFORMATION >
ON-VEHICLE SERVICE
ON-VEHICLE SERVICE
Front Suspension PartsINFOID:0000000003532636
Check front suspension parts for excessive play, cracks, wear and
other damage.
• Shake each front wheel to check for excessive play.
If looseness is noted, inspect wheel bearing end play, then check
ball joint end play. Refer to FA X - 5 , "
On-Vehicle Inspection and Ser-
vice" and FSU-15, "Inspection".
• Make sure that the cotter pin is inserted (4WD only).
• Retighten all nuts and bolts to the specified torque.
• Check shock absorber for oil leakage and other damage.
• Check suspension ball joint for grease leakage and ball joint dust
cover for cracks and other damage.
Front Wheel AlignmentINFOID:0000000003532637
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 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 WT-5, "
Inspection".
4. Check the wheel bearing axial end play. Refer to FA X - 5 , "
On-Vehicle Inspection and Service".
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 rear suspension member for any damage.
8. Check the vehicle height. Refer to FSU-20, "
Wheelarch Height (Unladen*1)".
• Verify the level using Consult-II memory register 1103 and set to 0 ± 10 mm (0 ± 0.39 in) as necessary.
GENERAL INFORMATION AND RECOMMENDATIONS
1. A Four-Wheel Thrust Alignment should be performed.
• This type of alignment is recommended for any NISSAN vehicle.
• The four-wheel “thrust” process helps ensure that the vehicle is properly aligned and the steering wheel
is centered.
• The alignment machine itself should be capable of accepting any NISSAN vehicle.
• The alignment machine should be checked to ensure that it is level.
2. Make sure the alignment machine is properly calibrated.
• Your alignment machine should be regularly calibrated in order to give correct information.Suspension component torques : Refer to FSU-5,
"Component" . SMA525A
SFA392B

COIL SPRING AND SHOCK ABSORBER
FSU-11
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INSPECTION AFTER DISASSEMBLY
Shock Absorber Assembly
• Check for smooth operation through a full stroke, both compression and extension.
• Check for oil leakage on welded or gland packing portions.
• Check piston rod for cracks, deformation or other damage and replace if necessary.
Mounting Insulator and Rubber Parts
Check cemented rubber-to-metal portion for separation or cracks. Check rubber parts for deterioration and
replace if necessary.
Coil Spring
• Check for cracks, deformation or other damage and replace if necessary.
• Check the free spring height.
ASSEMBLY
1. When installing coil spring on shock absorber, the lower end and
upper end must be positioned as shown.
• Shock absorber mounting insulator (1)
• Lower end (2)
• Upper end (3)
•⇐: Flat tail
2. Install upper spring insulator (3) with studs located in line with
lower shock mount and in lower seat step. The lower seat step
(2) in the shock absorber assembly (1) faces outside of vehicle.
•⇐: Front
3. Tighten the piston rod lock nut to specification. Refer to FSU-5,
"Component" .
• Use a new piston rod lock nut for assembly.Front spring free height
2WD : 325.5 ± 3 mm (12.8 ± 0.1 in)
4WD : 335.0 ± 3 mm (13.2 ± 0.1 in)
WEIA0154E
WEIA0155E