2008 INFINITI QX56 height

DLN-224
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
2. Using feeler gauges, measure the clearance between the side
gear back and differential case at three different points, while
rotating the side gear. Average the three readings to calculate
the clearance. (Measure the clearance of the other side as well.)
• If the side gear back clearance is outside of the specification,use a thicker or thinner side gear thrust washer to adjust.
Refer to DLN-231, "
Inspection and Adjustment".
CAUTION:
• Insert feeler gauges with the same thickness on both sides to prevent side gear from tilting.
• Each gear should rotate smoothly without excessive resistance during differential motion.
• Select a side gear thrust wash er for right and left individu-
ally.
NOTE:
Side gear back clearance is clearance between side gear and differential case for adjusting side gear
backlash.
Drive Pinion Height
• Drive gear and drive pinion are supplied in matched sets only. Matching numbers on both drive pinion and drive gear are etched
for verification. If a new gear set is being used, verify the numbers
of each drive pinion and drive gear before proceeding with assem-
bly.
• The mounting distance from the centerline of the drive gear to the back face of the drive pinion for the M205
final drive assembly is 103.5 mm (4.0748 inches).
On the button end of each drive pinion, there is etched a plus (+) number, a minus (-) number, or a zero (0),
which indicates the best running position for each partic ular gear set. This dimension is controlled by a
selective drive pinion height adjusting washer between the drive pinion rear bearing inner race and drive pin-
ion.
For example: If a drive pinion is etched m+8 (+3), it would require 0.08 mm (0.003 inch) less drive pinion
height adjusting washer than a drive pinion etched “0”. This means decreasing drive pinion height adjusting
washer thickness; increases the mounting distance of the drive pinion to 103.6 mm (4.0778 inches). If a
drive pinion is etched m-8 (-3), it would require addi ng 0.08mm (0.003 inch) more to the drive pinion height
adjusting washer than would be required if the drive pinion were etched “0”. By adding 0.08 mm (0.003 inch),
the mounting distance of the drive pinion was decreased to 103.4 mm (4.0718 inches) which is just what a
m-8 (-3) etching indicated.
• To change the drive pinion height, use different drive pi nion height adjusting washers which come in different
thickness.
• Use the following tables as a guide for selecting the correct drive pinion height adjusting washer thickness to add or subtract from the old drive pinion height adjusting washer. Side gear back clearance: 0.20 mm (0.0079 in) or less
If the side gear back clearance is greater than
specification:
Use a thicker side gear thrust washer.
If the side gear back clearance is less than spec-
ification: Use a thinner side gear thrust washer.
PDIA0576E
SDIA2241E
Revision: March 2010 2008 QX56

FRONT FINAL DRIVEDLN-225
< DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: M205]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
ASSEMBLY
Drive Pinion Assembly
1. Install drive pinion rear bearing outer race using Tools.
2. Install drive pinion front bearing outer race using Tools.
3. Select drive pinion height adjusting washer. Refer to DLN-231, "
Inspection and Adjustment"".
OLD DRIVE
PINION
MARKING NEW DRIVE PINION MARKING mm (in)
-10 (-4) -8 (-3) -5 (-2) -3 (-1) 0 (0) + 3 (+1) +5 (+2) +8 (+3) +10 (+4)
+10 (+4) +0.20
(+0.008) +0.18
(+0.007) +0.15
(+0.006) +0.13
(+0.005) +0.10
(+0.004) +0.08
(+0.003) +0.05
(+0.002) +0.02
(+0.001) 0
(0)
+8 (+3) +0.18
(+0.007) +0.15
(+0.006) +0.13
(+0.005) +0.10
(+0.004) +0.08
(+0.003) +0.05
(+0.002) +0.02
(+0.001) 0
(0) -0.02
(-0.001)
+5 (+2) +0.15
(+0.006) +0.13
(+0.005) +0.10
(+0.004) +0.08
(+0.003) +0.05
(+0.002) +0.02
(+0.001) 0
(0) -0.02
(-0.001) -0.05
(-0.002)
+3 (+1) +0.13
(+0.005) +0.10
(+0.004) +0.08
(+0.003) +0.05
(+0.002) +0.02
(+0.001) 0
(0) -0.02
(-0.001) -0.05
(-0.002) -0.08
(-0.003)
0 (0) +0.10
(+0.004) +0.08
(+0.003) +0.05
(+0.002) +0.02
(+0.001) 0
(0) -0.02
(-0.001) -0.05
(-0.002) -0.08
(-0.003) -0.10
(-0.004)
-3 (-1) +0
.08
(+0. 00

3)+0.05
(+0.002) +0.02
(+0.001) 0
(0) -0.02
(-0.001) -0.05
(-0.002) -0.08
(-0.003) -0.10
(-0.004) -0.13
(-0.005)
-5 (-2) +0.05
(+0.002) +0.02
(+0.001) 0
(0) -0.02
(-0.001) -0.05
(-0.002) -0.08
(-0.003) -0.10
(-0.004) -0.13
(-0.005) -0.15
(-0.006)
-8 (-3) +0.02
(+0.001) 0
(0) -0.02
(-0.001) -0.05
(-0.002) -0.08
(-0.003) -0.10
(-0.004) -0.13
(-0.005) -0.15
(-0.006) -0.18
(-0.007)
-10 (-4) 0
(0) -0.02
(-0.001) -0.05
(-0.002) -0.08
(-0.003) -0.10
(-0.004) -0.13
(-0.005) -0.15
(-0.006) -0.18
(-0.007) -0.20
(-0.008)
Tool number A: ST30901000 ( — )
B: KV40105230 ( — )
SDIA2251E
Tool number A: ST35271000 ( — )B: KV40104810 ( — )
SDIA2252E
Revision: March 2010 2008 QX56

DLN-226
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
4. Install the selected drive pinion height adjusting washer to the
drive pinion. Press the drive pinion rear bearing inner race to it
using Tool.
CAUTION:
Do not reuse drive pinion rear bearing inner race.
5. Install the collapsible spacer to the drive pinion. CAUTION:
Do not reuse collapsible spacer.
6. Apply differential gear oil to the drive pinion rear bearing, and install the drive pinion assembly to the gear carrier.
7. Apply differential gear oil to the drive pinion front bearing, and install the drive pinion front bearing inner race to the drive pinion
assembly.
CAUTION:
Do not reuse drive pinion front bearing inner race.
8. Apply multi-purpose grease to the lips of the new front oil seal. Then drive the new front oil seal in evenly using Tools.
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.
9. Install the companion flange to the drive pinion while aligning the matching marks. Tap the companion flange until fully seated
using suitable tool.Tool number : C-4040
SDIA2253E
PDIA0708E
Tool number A: ST35271000 ( — )
B: KV40104810 ( — )
PDIA0717E
SDIA2266E
Revision: March 2010 2008 QX56

DLN-232
< SERVICE DATA AND SPECIFICATIONS (SDS) [FRONT FINAL DRIVE: M205]
SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
COMPANION FLANGE RUNOUT
Unit: mm (in)
SELECTIVE PARTS
Drive Pinion Height Adjusting Washer
Unit: mm (in)
*Always check with the Parts Department for the latest parts information.
Side Gear Thrust Washer
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.Item
Standard
Drive gear to drive pinion backlash 0.12 - 0.20 (0.0050 - 0.0078)
ItemLimit
Companion flange face 0.10 (0.0039) or less
Companion flange inner side 0.13 (0.0051) or less
ThicknessPackage part number*
1.22 (0.048)
1.24 (0.049)
1.27 (0.050)
1.30 (0.051)
1.32 (0.052) 38154 8S111
1.35 (0.053)
1.37 (0.054)
1.40 (0.055)
1.42 (0.056)
1.45 (0.057) 38154 8S112
1.47 (0.058)
1.50 (0.059)
1.52 (0.060)
1.55 (0.061)
1.57 (0.062) 38154 8S113
1.60 (0.063)
1.63 (0.064)
1.65 (0.065)
1.68 (0.066)
1.70 (0.067) 38154 8S114
1.73 (0.068)
1.75 (0.069)
1.78 (0.070)
1.80 (0.071)
1.83 (0.072) 38154 8S115
Thickness
Package part number*
0.76 (0.030)
0.79 (0.031)
0.81 (0.032)
0.84 (0.033)
0.87 (0.034) 38424 8S111
0.89 (0.035)
0.91 (0.036)
0.94 (0.037)
0.97 (0.038)
0.99 (0.039) 38424 8S112
Revision: March 2010
2008 QX56

DLN-238
< PREPARATION >[REAR FINAL DRIVE: R230]
PREPARATION
ST30613000
(J-25742-3)
Drift Installing drive pinion front bearing outer race
a: 72 mm (2.83 in) dia.
b: 48 mm (1.89 in) dia.
KV38100300
(J-25523)
Drift Installing side bearing inner race
a: 54 mm (2.13 in) dia.
b: 46 mm (1.81 in) dia.
c: 32 mm (1.26 in) dia.
ST30901000
(J-26010-01)
Drift Installing drive pinion rear bearing inner race
a: 79 mm (3.11 in) dia.
b: 45 mm (1.77 in) dia.
c: 35.2 mm (1.386 in) dia.
HT72400000
(—)
Slide hammer Removing differential case assembly
—
(J-8129)
Spring gauge Measuring turning torque
—
(J-34309)
Differential shim selector tool Adjusting drive pinion bearing preload and
drive pinion height
Tool number
(Kent-Moore No.)
Tool name
Description
ZZA1000D
ZZA1046D
ZZA0978D
S-NT125
NT127
NT134
Revision: March 2010
2008 QX56

PREPARATIONDLN-239
< PREPARATION > [REAR FINAL DRIVE: R230]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
Commercial Service ToolINFOID:0000000001604454
—
(J-25269-4)
Side bearing disc (2 Req'd) Selecting drive pinion height adjusting washer
KV10112100
(BT-8653-A)
Angle wrench Tightening bolts for drive gear
Tool number
(Kent-Moore No.)
Tool name
Description
NT136
NT014
Tool name
Description
Spacer Installing drive pinion front bearing inner race
a: 60 mm (2.36 in) dia.
b: 36 mm (1.42 in) dia.
c: 30 mm (1.18 in)
Power tool Loosening nuts and bolts
ZZA1133D
PBIC0190E
Revision: March 2010 2008 QX56

DLN-252
< DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
ASSEMBLY INSPECTION AND ADJUSTMENT
• Drain the differential gear oil before inspection and adjustment. Refer to
DLN-242, "Changing Differential
Gear Oil".
• Remove and install the carrier cover as neces sary for inspection and adjustment. Refer to DLN-247,
"Removal and Installation".
Total Preload Torque
1. Remove the side flanges if necessary. Refer to "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 wash er for right and left individually.
Drive Gear Runout
1. Drive pinion lock nut 2. Companion flange3. Front oil seal
4. Drive pinion front bearing 5. Collapsible spacer6. Drive pinion rear bearing
7. Drive pinion height adjusting washer 8. Drive pinion 9. Gear carrier
10. Drive gear 11. Pinion mate shaft12. Lock pin
13. Pinion mate gear 14. Pinion mate thrust washer 15. Side gear
16. Side gear thrust washer 17. Differential case18. Side bearing
19. Side bearing adjusting washer 20. Bearing cap 21. Carrier cover
22. Filler plug 23. Drain plug24. 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 b earing adjusting washers by the same
amount on each side. Refer to DLN-268, "
Inspection and Adjust-
ment".
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 b earing adjusting washers by the same
amount on each side. Refer to DLN-268, "
Inspection and Ad-
justment".
Revision: March 2010 2008 QX56

REAR FINAL DRIVEDLN-253
< DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
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
1. Apply red lead to the drive gear. NOTE:
Apply red lead to both faces of thr ee to four gears, at four loca-
tions evenly spaced on the drive gear.
2. Rotate the drive gear back and forth several times. Then check for correct drive pinion to drive gear tooth contact as shown.
CAUTION:
Check tooth contact on drive side and reverse side.
3. If the tooth contact is improperly adjusted, follow the procedure below to adjust the pinion height (dimension X).Runout limit : 0.05 mm (0.0020 in) or less
SPD886
SPD357
SDIA0570E
SDIA0517E
Revision: March 2010
2008 QX56