2006 INFINITI QX56 lock

FRONT OIL SEALRFD-9
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RFD
Revision: November 2009 2006 QX56
FRONT OIL SEALPFP:38189
Removal and InstallationEDS0044Q
REMOVAL
1. Remove the drive shafts from the rear final drive assembly. Refer to RAX-7, "Removal and Installation" .
2. Remove the side flanges and side oil seals. Refer to RFD-11, "
Removal and Installation" .
3. Remove the rear propeller shaft. Refer to PR-8, "
Removal and Installation" .
4. Measure the total preload torque. Refer to RFD-16, "
Total Preload Torque" .
NOTE:
Record the total preload torque measurement.
5. Remove the drive pinion lock nut using Tool.
6. Put matching marks on the companion flange and drive pinion using paint.
CAUTION:
Use paint to make the matching marks. Do not damage the
companion flange or drive pinion.
7. Remove the companion flange using suitable tool.
8. Remove the front oil seal using Tool.
INSTALLATION
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 front oil seal when installing.

Apply multi-purpose grease to the lips of the new front oil
seal.Tool number : KV40104000 ( — )
SDIA1142E
SDIA1054E
Tool number : KV381054S0 (J-34286)
SDIA0485E
Tool number : ST15310000 ( — )
PDIA0565E

RFD-10
FRONT OIL SEAL
Revision: November 20092006 QX56
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
preload 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 RFD-15, "
COMPONENTS" .

Do not loosen drive pinion lock nut to adjust the total preload torque. If the total preload torque
exceeds the specifications, replace the collapsible spacer and tighten it again to adjust. Refer to
RFD-15, "
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 RFD-8, "
Checking Differential Gear
Oil" .
Tool number A: KV40104000 ( — )
B: ST3127S000 (J-25765-A)
Total preload torque: Refer to RFD-16, "
To ta l P r e l o a d
To r q u e" .
WDIA0380E

RFD-16
REAR FINAL DRIVE ASSEMBLY
Revision: November 20092006 QX56
ASSEMBLY INSPECTION AND ADJUSTMENT

Drain the differential gear oil before inspection and adjustment. Refer to RFD-8, "DIFFERENTIAL GEAR
OIL" .

Remove and install the carrier cover as necessary for inspection and adjustment. Refer to RFD-12, "CAR-
RIER COVER" .
Total Preload Torque
1. Remove the side flanges if necessary. Refer to RFD-19, "Side Flange" .
CAUTION:
The side flanges shaft must removed 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 the 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.
CAUTION:
Select a side bearing adjusting washer for right and left individually.
1. Drive pinion lock nut 2. Companion flange 3. Front oil seal
4. Drive pinion front bearing 5. Collapsible spacer 6. Drive pinion rear bearing
7. Drive pinion height adjusting washer 8. Drive pinion 9. Gear carrier
10. Drive gear 11. Pinion mate shaft 12. Lock pin
13. Pinion mate gear 14. Pinion mate thrust washer 15. Side gear
16. Side gear thrust washer 17. Differential case 18. Side bearing
19. Side bearing adjusting washer 20. Bearing cap 21. Carrier cover
22. Filler plug 23. Drain plug 24. Side oil seal
Tool number : ST3127S000 (J-25765-A)
Total preload torque:
2.05 - 4.11 N·m (0.21 - 0.42 kg-m, 19 - 36 in-lb)
SPD884
If the total preload torque is greater than specificationOn drive pinion bearings: Replace the collapsible spacer.
On side bearings: Use thinner side bearing adjusting washers by the same amount on each side. Refer to RFD-33, "
Side Bearing Adjusting
Washer" .
If the total preload torque is less than specification On drive pinion bearings: Tighten the drive pinion lock nut.
On side bearings: Use thicker side bearing adjusting washers by the same amount on each side. Refer to RFD-33, "
Side Bearing Adjust-
ing Washer" .

REAR FINAL DRIVE ASSEMBLYRFD-21
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Revision: November 2009 2006 QX56
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 drive
gear 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.
13. Remove the pinion mate shaft. Tool number A: ST3306S001 ( — )
B: ST33061000 (J-8107-2)
SPD920
PDIA0496E
WDIA0132E
SDIA0031J

RFD-22
REAR FINAL DRIVE ASSEMBLY
Revision: November 20092006 QX56
14. Turn the pinion mate gear, then remove the pinion mate gear,
pinion mate thrust washer, side gear and side gear thrust
washer from the differential case.
Drive Pinion Assembly
1. Remove the differential assembly. Refer to RFD-19, "Differential Assembly" .
2. Remove the drive pinion lock nut using Tool.
3. Put matching marks on the companion flange and drive pinion using paint.
CAUTION:
Use paint to make the matching marks. Do not damage the
companion flange or drive pinion.
4. Remove the companion flange using suitable tool.
5. Press the drive pinion assembly (with rear inner bearing race and collapsible spacer) out of the gear carrier.
CAUTION:
Do not drop drive pinion assembly.
6. Remove the front oil seal. CAUTION:
Do not damage gear carrier.
7. Remove the drive pinion front bearing inner race.
SDIA0032J
Tool number : KV40104000 ( — )
SDIA1144E
SDIA1132E
SPD892

REAR FINAL DRIVE ASSEMBLYRFD-27
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Revision: November 2009 2006 QX56
7. Press the drive pinion front bearing inner race to the drive pinion
as far as drive pinion lock nut can be tightened using suitable
spacer.
8. 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 front oil seal when installing.

Apply multi-purpose grease to the lips of the new front oil
seal.
9. Install the companion flange to the drive pinion while aligning the matching marks.
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. Refer to RFD-15, "
COMPONENTS" .

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. Refer to RFD-18, "
Companion Flange Runout" .
12. Install the differential case assembly. Refer to RFD-28, "
Differential Assembly" .
SPD896
Tool number : ST15310000 ( — )
PDIA0563E
Tool number A: KV40104000 ( — )
B: ST3127S000 (J-25765-A)
Drive pinion bearing preload torque: 1.77 - 2.64 N·m (0.18 - 0.26 kg-m, 16 - 23 in-lb)
WDIA0379E

RFD-28
REAR FINAL DRIVE ASSEMBLY
Revision: November 20092006 QX56
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.
CAUTION:
Make sure that the circular clip is installed to side gears.
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.
4. Align the lock pin hole on the differential case with the lock pin hole on the pinion mate shaft, and install the pinion mate shaft.
5. Measure the side gear end play. If necessary, select the appro- priate side gear thrust washers. Refer to RFD-32, "
SIDE GEAR
CLEARANCE" .
6. Drive a new lock pin into the pinion mate shaft until it is flush with the differential case using suitable tool.
CAUTION:
Do not reuse lock pin.
SDIA0193J
SDIA2025E
SDIA0195J
WDIA0131E

REAR FINAL DRIVE ASSEMBLYRFD-29
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Revision: November 2009 2006 QX56
7. Align the matching mark of the differential case with the mark of
the drive gear, then place the drive gear onto the differential
case.
8. Apply thread locking sealant into the threaded holes of the drive gear and install the bolts.

Use Genuine Medium Strength Thread Locking Sealant or
equivalent. Refer to GI-46, "
Recommended Chemical Prod-
ucts and Sealants" .
CAUTION:
Make sure the drive gear back and threaded holes are
clean.
9. Tighten the drive gear bolts to the specified torque. Refer to RFD-15, "
COMPONENTS" . After tightening the drive gear bolts
to the specified torque, tighten an additional 34 ° using Tool.
CAUTION:

Always use Tool. Avoid tightening based on visual check
alone.

Tighten drive gear bolts in a crisscross pattern.
10. Press the side bearing inner races into the differential case using Tools.
CAUTION:
Do not reuse side bearing inner race.
11. Install the differential case assembly with the side bearing outer races into the gear carrier.
12. Measure the side bearing preload torque. If necessary, select the appropriate side bearing adjusting washers. Refer to RFD-
24, "Side Bearing Preload Torque" .
SDIA2593E
SDIA2594E
Tool number : KV10112100-A (BT-8653-A)
SDIA0247J
Tool number A: KV38100200 (J-26233)
B: ST33081000 ( — )
SPD353
SPD919