check oil INFINITI QX56 2010 Factory Workshop Manual

DLN-210
< ON-VEHICLE REPAIR >[FRONT FINAL DRIVE: M205]
SIDE OIL SEAL
ON-VEHICLE REPAIR
SIDE OIL SEAL
Removal and InstallationINFOID:0000000005148918
REMOVAL
1. Remove the front final drive assembly. Refer to
DLN-215, "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 DLN-209
.
BDIA0006E
LDIA0129E
Tool number : SP8P
LDIA0130E
Revision: April 20092010 QX56

DLN-212
< ON-VEHICLE REPAIR >[FRONT FINAL DRIVE: M205]
FRONT OIL SEAL
8. Remove the front oil seal using Tool as shown.
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 oilseal.
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 suitable 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 DLN-217, "
Disassembly and
Assembly".
• Do not loosen drive pinion lock nu t to adjust the total preload torque. If the drive pinion lock nut
torque or the total preload torque exceeds the sp ecifications, replace the collapsible spacer and
tighten it again to adjust. Refer to DLN-217, "
Disassembly and Assembly".
• After adjustment, rotate drive pinion back and fo rth 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:Tool number : SP8P
LDIA0130E
Tool number : KV38100500 (J-25273)
: KV38102200 ( — )
BDIA0003E
Tool number B: ST3127S000 (J-25765-A)
Total preload torque: Refer to DLN-234, "
General
Specification".
WDIA0381E
Revision: April 20092010 QX56

FRONT OIL SEALDLN-213
< ON-VEHICLE REPAIR > [FRONT FINAL DRIVE: M205]
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Check the differential gear oil level after installation. Refer to DLN-209, "Checking Front Differen-
tial Gear Oil".
Revision: April 20092010 QX56

DLN-214
< ON-VEHICLE REPAIR >[FRONT FINAL DRIVE: M205]
CARRIER COVER
CARRIER COVER
Removal and InstallationINFOID:0000000005148920
REMOVAL
1. Remove the front final drive assembly. Refer to
DLN-215, "Removal and Installation".
2. Remove the carrier cover bolts and separate the carrier cover from the gear carrier using Tool.
CAUTION:
• Do not damage the mating surface.
• Do not insert flat-bladed screwdr iver, this will damage the
mating surface.
INSTALLATION
1. Apply 3 mm (0.12 in) bead of sealant to the mating surface of the carrier cover as shown.
• Use Genuine Silicone RTV or equivalent. Refer to GI-15,
"Recommended Chemical Products and Sealants".
CAUTION:
Remove any old sealant adheri ng to the mating surfaces.
Also remove any moisture, oil, or foreign material adhering
to the application and mating surfaces.
2. Install the carrier cover to the gear carrier. Tighten the bolts to the specified torque. Refer to DLN-217, "
Disassembly and
Assembly".
3. Install the front final drive assembly. Refer to DLN-215,
"Removal and Installation".
CAUTION:
Fill the front final drive assembly with r ecommended differential gear oil. Refer to DLN-209,
"Checking Front Differential Gear Oil".
Tool number : KV10111100 (J-37228)
PDIA0699E
SDIA3204E
Revision: April 20092010 QX56

DLN-216
< REMOVAL AND INSTALLATION >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
7. Remove the front final drive assembly bolts, then remove the
front final drive assembly.
CAUTION:
Support the front final drive assembly while removing using
a suitable jack.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Make sure there are no pinched or restricted areas on the breather hose caused by folding or bend-ing when installing it.
• Fill the front final drive assembly with differen tial gear oil after installation. Refer to DLN-209,
"Checking Front Differential Gear Oil".
BDIA0008E
Revision: April 20092010 QX56

DLN-218
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
ASSEMBLY INSPECTION AND ADJUSTMENT
• Drain the differential gear oil before inspection and adjustment. Refer to
DLN-209, "Changing Front Differen-
tial Gear Oil".
• Remove and install the carrier cover as neces sary for inspection and adjustment. Refer to DLN-214,
"Removal and Installation".
Total Preload Torque
1. Install the differential side shaft and differential side flange if necessary.
CAUTION:
The differential side shaft and differential side flan ge must be installed in order to measure total
preload torque.
2. Rotate the drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.
3. Rotate the drive pinion at least 20 times to check for smooth operation of the bearings.
4. Measure total preload torque using Tool.
NOTE:
Total preload torque = Drive pinion bearing preload torque +
Side bearing preload torque
• If the measured value is out of the specification, check and adjust each part. Adjust the drive pinion
bearing preload torque first, then adjust the side bearing preload torque.
Drive Gear Runout
1. Fit a dial indicator to the drive gear back face.
2. Rotate the drive gear to measure runout.
• If the runout is outside of the limit , check the condition of the drive
gear assembly. Foreign material may be caught between the drive
gear and differential case, or the differential case or drive gear may
be deformed.
CAUTION:
Replace drive gear and drive pinion as a set.
Tooth Contact
28. Plate 29. Differential case30. Drive gear
31. Side bearing cap 32. Filler plug33. Carrier cover
34. Bushing 35. Bearing36 Screw
37 Dowel pin
Tool number : ST3127S000 (J-25765-A)
Total preload torque : Refer to DLN-234, "
Inspection and Adjust-
ment"
PDIA0697E
If the total preload torque is greater than specification
On drive pinion bearings: R eplace the collapsible spacer.
On side bearings: Loosen the side bearing adjuster by the same amount on each side.
If the total preload torque is less than specification On drive pinion bearings: Tighten the drive pinion lock nut.
On side bearings: Tighten the side bearing adjuster by the same amount on each side.
Runout limit: 0.08 mm (0.0031 in) or less
SPD886
Revision: April 20092010 QX56

DLN-220
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
Backlash
1. Fit a dial indicator to the drive gear face to measure the back-
lash.
• If the backlash is outside of t he 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 af ter 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 : Refer to
DLN-234, "
Inspection and Ad-
justment"
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 : Refer to DLN-234, "
Inspec-
tion and Adjustment"
Companion flange inner
side: Refer to
DLN-234, "Inspec-
tion and Adjustment"
SDIA2078E
Revision: April 20092010 QX56

DLN-230
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
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 suitable 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 pinionand 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 DLN-217, "
Disassembly and
Assembly".
• If the drive pinion bearin g preload torque exceeds the
specified value, replace collap sible 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 fo rth 2 to 3 times to check for unusual noise, rota-
tion 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 B: ST3127S000 (J-25765-A)
Drive pinion bearing preload torque
: Refer to DLN-234, "
Inspection and Adjust-
ment"
WDIA0382E
SDIA0193J
SDIA2025E
Revision: April 20092010 QX56

DLN-232
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
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 ou ter 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. Refer to DLN-217, "
Disassembly and Assem-
bly".
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
Revision: April 20092010 QX56

PRECAUTIONSDLN-237
< PRECAUTION > [REAR FINAL DRIVE: R230]
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5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of al l control units using CONSULT-III.
Precaution for Servicing Rear Final DriveINFOID:0000000005148925
• 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 fr om 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 jell y, or multi-purpose grease, as specified.
Revision: April 20092010 QX56