2009 INFINITI QX56 200

DLN-244
< ON-VEHICLE MAINTENANCE >[REAR FINAL DRIVE: R230]
DIFFERENTIAL GEAR OIL
ON-VEHICLE MAINTENANCE
DIFFERENTIAL GEAR OIL
Changing Differential Gear OilINFOID:0000000004193554
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
1. Remove the filler plug and gasket from the rear final drive assembly.
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.
Checking Differential Gear OilINFOID:0000000004193555
OIL LEAKAGE AND OIL LEVEL
1. Make sure that differential gear oil is not leaki ng 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.
LLIA0068E
Differential gear oil
grade and capacity : Refer to
MA-12, "Fluids and
Lubricants".
LLIA0068E
LLIA0068E
Revision: December 20092009 QX56

FRONT OIL SEALDLN-245
< ON-VEHICLE REPAIR > [REAR FINAL DRIVE: R230]
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ON-VEHICLE REPAIR
FRONT OIL SEAL
Removal and InstallationINFOID:0000000005877760
REMOVAL
1. Remove the drive shafts from the rear final drive assembly. Refer to RAX-9, "Removal and Installation".
2. Remove the side flanges and side oil seals. Refer to DLN-247, "Removal and Installation"
.
3. Remove the rear propeller shaft. Refer to DLN-196, "Removal and Installation"
.
4. Measure the total preload torque. Refer to DLN-253, "Disassembly and Assembly"
.
NOTE:
Record the total preload torque measurement.
5. Remove the drive pinion lock nut using suitable tool.
6. Put matching marks on the companion flange and drive pinion using paint. CAUTION:
Use paint to make the matching marks. Do not da mage the companion flange or drive pinion.
7. Remove the companion flange using suitable tool.
8. Remove the front oil seal using Tool.
INSTALLATION
SDIA1142E
SDIA1054E
Tool number : KV381054S0 (J-34286)
SDIA0485E
Revision: December 20092009 QX56

DLN-246
< ON-VEHICLE REPAIR >[REAR FINAL DRIVE: R230]
FRONT OIL SEAL
1. Apply multi-purpose grease to the lips of the new front oil seal.
Then drive the new front oil seal in evenly until it becomes flush
with the gear carrier using Tool.
CAUTION:
 Do not reuse front oil seal.
 Do not incline the new fron t 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 suitable tool (A),
and check the total preload torque using Tool (B).
 The total preload torque should be within the total preloadtorque 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 th e 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-253, "Disassembly and
Assembly".
 Do not loosen drive pinion lock nu t to adjust the total preload torque. If the total preload torque
exceeds the specifications, replace the collapsible sp acer and tighten it again to adjust. Refer to
DLN-253, "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:
Check the differential gear oil level after installation. Refer to DLN-244, "Checking Differential Gear
Oil".
Tool number : ST15310000 ( — )
PDIA0565E
Tool number B: ST3127S000 (J-25765-A)
Total preload torque: Refer to
DLN-253, "Disassem-
bly and Assembly".
WDIA0380E
Revision: December 20092009 QX56

SIDE OIL SEALDLN-247
< ON-VEHICLE REPAIR > [REAR FINAL DRIVE: R230]
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SIDE OIL SEAL
Removal and InstallationINFOID:0000000004193557
REMOVAL
1. Remove the drive shaft from the rear final drive assembly. Refer to RAX-9, "Removal and Installation".
2. Remove the side flange using Tools.
3. Remove the side oil seal using suitable tool. CAUTION:
Do not to damage gear carrier.
INSTALLATION
1. Apply multi-purpose grease to the lips of the new side oil seal.
Then drive the new side oil seal in evenly until it becomes flush
with the gear carrier using Tool.
CAUTION:
 Do not reuse side oil seal.
 Do not incline the new side oil seal when installing.
 Apply multi-purpose grease to th e lips of the new side oil
seal.
2. Install the side flange using Tool.
a. Install the Tool to the side oil seal as shown.
b. Insert the side flange until the serrated part of the side flange has engaged the serrated part of the side gear and remove the
Tool.
c. Drive in the side flange using suitable tool. NOTE:
Installation is completed when the driving sound of the side
flange turns into a sound which seems to affect the whole rear
final drive assembly.
3. Installation of the remaining components is in the reverse order of removal. CAUTION:Tool numbers A: KV40104100 ( — )
B: ST36230000 (J-25840-A)
WDIA0115E
LDIA0109E
Tool number : KV38100200 (J-26233)
LDIA0111E
Tool number : KV38107900 (J-39352)
SDIA0822E
Revision: December 20092009 QX56

DLN-248
< ON-VEHICLE REPAIR >[REAR FINAL DRIVE: R230]
SIDE OIL SEAL
Check the differential gear oil level
after installation. Refer to DLN-244, "Checking Differential Gear
Oil".
Revision: December 20092009 QX56

CARRIER COVERDLN-249
< ON-VEHICLE REPAIR > [REAR FINAL DRIVE: R230]
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CARRIER COVER
Removal and InstallationINFOID:0000000004193558
REMOVAL
1. Remove the rear final drive assembly. Refer to DLN-250, "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 screw driver, this will damage the
mating surface.
INSTALLATION
1. Apply a 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-249, "Removal and Installa-
tion".
3. Install the rear final drive assembly. Refer to DLN-250, "Removal
and Installation".
CAUTION:
Fill the rear final drive assembly with reco mmended differential gear oil. Refer to DLN-244,
"Checking Differential Gear Oil".
Tool number : KV10111100 (J-37228)
WDIA0123E
WDIA0282E
Revision: December 20092009 QX56

DLN-250
< REMOVAL AND INSTALLATION >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
REMOVAL AND INSTALLATION
REAR FINAL DRIVE
Removal and InstallationINFOID:0000000005877761
REMOVAL
1. Remove the spare tire.
2. Drain the differential gear oil. Refer to
DLN-244, "Changing Differential Gear Oil"
.
3. Remove the rear stabilizer bar. Refer to RSU-23, "Removal and Installation"
.
4. Remove the rear propeller shaft. Refer to DLN-196, "Removal and Installation"
.
5. Remove the rear drive shafts from the rear final drive assembly and support them using suitable wire. Refer to RAX-9, "Removal
and Installation".
6. Disconnect the breather hose from the rear final drive assembly.
1. Rear final drive assembly 2. Upper stopper 3. Washer
4. Lower stopper Vehicle front
WDIA0383E
LDIA0164E
Revision: December 20092009 QX56

REAR FINAL DRIVEDLN-251
< REMOVAL AND INSTALLATION > [REAR FINAL DRIVE: R230]
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7. Place a suitable jack under the rear final drive assembly. CAUTION:
Do not place the jack on the carrier cover.
8. Remove the nuts and bolts and remove the rear final drive assembly.
CAUTION:
Secure rear final drive assembl y to the jack while removing
it.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
 When installing the breather hose make sure the pa inted marking on the metal end of breather hose
is to the front of the vehicle and there are no pinched or restricted areas on the breather hose
caused by folding or bend ing when installing it.
 When installing the breather hose insert the plastic end of the breather hose into the hole in the sus-
pension member.
WDIA0117E
Revision: December 20092009 QX56