2009 INFINITI QX56 100

PREPARATIONDLN-239
< PREPARATION > [REAR FINAL DRIVE: R230]
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KV38107900
(J-39352)
Protector Installing side flange
KV40104100
(—)
Attachment Removing side flange
ST15310000
(—)
Oil seal drift Installing front oil seal
a: 96 mm (3.78 in) dia.
b: 84 mm (3.31 in) dia.
ST30022000
(—)
Drift Installing drive pinion bearing
a: 110 mm (4.33 in) dia.
b: 46 mm (1.81 in) dia.
ST30031000
(J-22912-01)
Puller Removing drive pinion rear bearing inner race
ST30621000
(—)
Drift Installing drive pinion front and rear bearing
races
a: 79 mm (3.11 in) dia.
b: 59 mm (2.32 in) dia.
Tool number
(Kent-Moore No.)
Tool name
Description
S-NT129
ZZA0804D
ZZA0908D
ZZA0920D
ZZA0700D
NT073
Revision: December 20092009 QX56

DLN-240
< PREPARATION >[REAR FINAL DRIVE: R230]
PREPARATION
Commercial Service Tool
INFOID:0000000004193551
ST3127S000
(J-25765-A)
Preload gauge
1: GG91030000 (J-25765)
Torque wrench
2: HT62940000 (—)
Socket adapter (1/2 ″)
3: HT62900000 (—)
Socket adapter (3/8 ″) Measuring drive pinion bearing preload torque
and total preload torque
ST3306S001
(—)
Differential side bearing puller set
1: ST33051001 (J-22888-20)
Puller
2: ST33061000
(J-8107-2)
Base Removing and installing side bearing inner
race
a: 28.5 mm (1.122 in) dia.
b: 38 mm (1.50 in) dia.
ST33081000
(—)
Adapter Install differential carrier side bearings
a: 43 mm (1.69 in) dia.
b: 33.5 mm (1.319 in) dia.
ST35325000
(—)
Drift bar Installing drive pinion front and rear bearing
races
ST36230000
(J-25840-A)
Sliding hammer Removing side flange
—
(J-8129)
Spring gauge Measuring turning torque
Tool number
(Kent-Moore No.)
Tool name
Description
NT124
NT072
NT431
ZZA1140D
ZZA0803D
NT127
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

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

REAR FINAL DRIVEDLN-257
< DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
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1. Rotate companion flange and check for runout on the outer face of the companion flange using suitable tool.
2. If the runout is outside of 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 pinion, possible c ause could be an assembly malfunction of drive pin-
ion and drive pinion bearing or a malfunctioning drive pinion bearing.
c. If the runout is still outside of t he runout limit after repair of the assembly of drive pinion and drive pinion
bearing or drive pinion bearing, replace the companion flange.
DISASSEMBLY
Side Flange
1. Drain the differential gear oil if necessary.
2. Remove the side flange using Tools.
3. Remove the side oil seal using suitable tool.
CAUTION:
Do not to damage gear carrier.
Differential Assembly
1. Remove the side flanges.
2. Remove the carrier cover bolts.
3. Remove the carrier cover bolts and separate the carrier coverfrom 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. Runout limit : Refer to
DLN-270, "Inspection and
Adjustment"
WDIA0231E
Tool numbers A: KV40104100 ( — )
B: ST36230000 (J-25840-A)
WDIA0115E
LDIA0109E
Tool number : KV10111100 (J-37228)
WDIA0123E
Revision: December 20092009 QX56

DLN-258
< DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
4. Mount the carrier on the Tool using two 45 mm (1.77 in) spacers.
5. For proper reinstallation, paint matching marks on one side of
the side bearing cap and gear carrier.
CAUTION:
 For matching marks, use paint. Do not damage side bear-ing cap or gear carrier.
 Side bearing caps are line-board during manufacture. The matching marks are used to re install them in their original
positions.
6. Remove the side bearing caps.
7. Lift the differential case assembly out using Tool.
CAUTION:Tool number : KV38100800 (J-25604-01)
SPD888
SDIA1795E
S-PD343
Tool number : HT72400000 ( — )
S-PD344
Revision: December 20092009 QX56

REAR FINAL DRIVEDLN-259
< DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
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 Keep side bearing outer races together with inner race. Do not mix them up.
 Keep side bearing adjusting washers together with side
bearings.
8. Remove the side bearing inner races using Tools. CAUTION:
 Engage Tool jaws in bearing groove to prevent damage.
 Place copper plates between the side bearing and drivegear and the vise to prevent damage.
 Do not remove side bearing inner race unless it is being
replaced.
9. For proper reinstallation, paint matching marks on the differential case and drive gear.
CAUTION:
Use paint for matching marks. Do not damage differential
case or drive gear.
10. Remove the drive gear bolts.
11. Tap the drive gear off the differential case using suitable tool. CAUTION:
Tap evenly all around to keep drive gear from bending.
12. Remove the lock pin of the pinion mate shaft from the drive gear side using suitable tool.
SPD919
Tool number A: ST3306S001 ( — )
B: ST33061000 (J-8107-2)
SPD920
PDIA0496E
WDIA0132E
Revision: December 20092009 QX56