2009 INFINITI QX56 torque

DLN-214
< ON-VEHICLE REPAIR >[FRONT FINAL DRIVE: M205]
CARRIER COVER
CARRIER COVER
Removal and InstallationINFOID:0000000004193544
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 Differential Gear Oil".
Tool number : KV10111100 (J-37228)
PDIA0699E
SDIA3204E
Revision: December 20092009 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 Differential
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 case 30. Drive gear
31. Side bearing cap 32. Filler plug 33. Carrier cover
34. Bushing 35. Bearing 36 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 bearin g 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 bear ing adjuster by the same amount on each
side.
Runout limit: 0.08 mm (0.0031 in) or less
SPD886
Revision: December 20092009 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: December 20092009 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 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-217, "Disassembly and
Assembly".
 If the drive pinion bearing preload torque exceeds the specified value, replace collap sible spacer and tighten it
again to adjust. Do not lo osen 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: December 20092009 QX56

FRONT FINAL DRIVEDLN-231
< DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: M205]
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4. Install the pinion mate shaft and align the lock pin hole on the pinion mate shaft with the lock pin hole on the differential case.
5. Measure the side gear end play. If necessary, select the appro- priate side gear thrust washers. Refer to DLN-234, "Inspection
and Adjustment".
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.
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. Install and tighten the new drive gear bolts to the specified torque. Refer to DLN-217, "Disassembly and Assembly"
.
CAUTION:
 Make sure the drive gear back and threaded holes are
clean.
 Do not reuse drive gear bolts.
 Tighten new drive gear bolts in a crisscross pattern.
9. Press the new side bearing inner races to the differential case using Tools.
CAUTION:
Do not reuse side bearing inner races.
SDIA0195J
SPD030
SDIA2593E
SDIA2239E
Tool number A: KV38100300 (J-25523)
B: ST33081000 ( — )
SPD353
Revision: December 20092009 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: December 20092009 QX56

FRONT FINAL DRIVEDLN-233
< DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: M205]
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16. Install the extension tube with a new O-ring. CAUTION:
 Do not reuse O-ring.
 If the extension tube is be ing replaced, install a new axle
shaft bearing.
17. 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.
18. Install the carrier cover to the gear carrier. Tighten the bolts to the specified torque. Refer to DLN-214, "Removal and Installa-
tion".
19. Install side shaft and side flange.
SDIA3205E
SDIA3204E
Revision: December 20092009 QX56

DLN-234
< SERVICE DATA AND SPECIFICATIONS (SDS) [FRONT FINAL DRIVE: M205]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000004193547
Inspection and AdjustmentINFOID:0000000004193548
DRIVE GEAR RUNOUT
Unit: mm (in)
SIDE GEAR CLEARANCE
Unit: mm (in)
PRELOAD TORQUE
Unit: N·m (kg-m, in-lb)
BACKLASH
Unit: mm (in)
COMPANION FLANGE RUNOUT
Unit: mm (in)
SELECTIVE PARTS
Drive Pinion Height Adjusting Washer
Applied model4WD
VK56DE
A/T
Final drive model M205
Gear ratio 3.357
Number of teeth (Drive gear/Drive pinion) 47/14
Differential gear oil capacity (Approx.) 1.6 (3 3/8 US pt, 2 7/8 Imp pt)
Number of pinion gears 2
Drive pinion adjustment spacer type Collapsible
Item Limit
Drive gear back face 0.08 (0.0031) or less
Item Standard
Side gear back clearance (Clearance between side gear and dif-
ferential case for adjusting side gear backlash) 0.20 (0.0079) or less
(Each gear should rotate smoothly without excessive resistance during differential motion.)
Item Standard
Drive pinion bearing preload torque 2.3 - 3.4 (0.24 - 0.34, 21 - 30)
Total preload torque
(Total preload torque = drive pinion bearing preload torque + side
bearing preload torque). 2.98 - 4.76 (0.31 - 0.48, 27 - 42)
Item Standard
Drive gear to drive pinion backlash 0.12 - 0.20 (0.0050 - 0.0078)
Item Limit
Companion flange face 0.10 (0.0039) or less
Companion flange inner side 0.13 (0.0051) or less
Revision: December 20092009 QX56