2008 INFINITI QX56 ECU

TRANSFER ASSEMBLYDLN-155
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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d. Place the control valve with the lower body facing up. Remove the two bolts, and then remove the lower body and separator
plate from the upper body.
CAUTION:
Do not drop relief balls. Detach lower body carefully.
e. Make sure the reverse balls, relief balls, relief springs, accumu- lator pistons and valve springs are securely installed as shown,
and remove them.
f. Remove the retainer plates.
g. Remove each retainer plate (1), plug (2), control valve (3) and spring (4) from the upper body (5).
37. Remove the transfer motor bolts and motor from the center case. Then remove the O-ring from the transfer motor.
WDIA0200E
SDIA2126E
SDIA2127E
WDIA0284E
SDIA2133E
Revision: March 2010 2008 QX56

TRANSFER ASSEMBLYDLN-163
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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f. With the lower body down, tighten the two bolts shown.
g. Apply ATF to the new O-rings, and install them to each solenoid valve, switch and terminal body.
CAUTION:
Do not reuse O-rings.
h. Install the following to the control valve assembly: • Clutch pressure solenoid valve
• Clutch pressure switch
• 2-4WD shift solenoid valve
• Line pressure switch
• Transfer fluid temperature sensor
10. Apply ATF to the new lip seals, and install them to the center case.
CAUTION:
• Do not reuse lip seals.
• There are 2 kinds of lip seals (lip seal of large inner diam-eter: 5 pieces, lip seal of small inner diameter: 2 pieces).
Confirm their position for installation.
11. Install the control valve assembly to the center case, and tighten to the specified torque. Refer to DLN-140, "
Disassembly and
Assembly".
CAUTION:
• Do not reuse any part that has been dropped or damaged.
• Make sure valve is assembled in the proper direction.
• Do not use a magnet becau se residual magnetism stays
during assembly.
12. Install the connector assembly into the center case, and secure with a snap ring.
13. Apply ATF to the new O-rings, and install them on the oil strainer.
CAUTION:
Do not reuse O-rings.
14. Install the oil strainer to the control valve assembly.
WDIA0198E
SDIA2123E
SDIA2121E
SDIA2122E
SDIA2782E
Revision: March 2010 2008 QX56

TRANSFER ASSEMBLYDLN-167
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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30. Install the new snap ring to the main shaft. CAUTION:
Do not reuse snap ring.
31. Install the mainshaft rear bearing to the center case using Tool.
32. Install the mainshaft assembly using a press. • Press the mainshaft into the center case using Tools.
33. Install the C-rings to the mainshaft.
34. Set the washer holder on the mainshaft, and secure it with a new snap ring.
CAUTION:
Do not reuse snap ring.
SDIA2195E
Tool number : ST15310000 (J-25640-B)
SDIA2196E
Tool number A: ST30911000 ( — )
B: ST33052000 ( — )
SDIA2197E
SDIA2201E
SDIA2104E
Revision: March 2010 2008 QX56

TRANSFER ASSEMBLYDLN-171
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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5. Install the sun gear assembly to the planetary carrier assembly.
6. Install the new snap ring to the planetary carrier assembly. CAUTION:
Do not reuse snap ring.
7. Set the input bearing into the front case and install using suitable tool.
8. Install the new snap ring into the front case. CAUTION:
Do not reuse snap ring.
9. Install the internal gear with its groove facing the snap ring into the front case. Then secure it with the new snap ring.
CAUTION:
Do not reuse snap ring.
SDIA2180E
SDIA2794E
Tool number : ST30720000 ( — )
SDIA2172E
SDIA2171E
WDIA0100E
Revision: March 2010 2008 QX56

DLN-172
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
10. Install the new front oil seal until it is seated flush with the end
face of the front case using Tool.
CAUTION:
• Do not reuse oil seal.
• Apply petroleum jelly to oil seal lip before installing.
11. Install the planetary carrier assembly and sun gear assembly to the front case using Tool.
12. Install the new snap ring to the sun gear. CAUTION:
Do not reuse snap ring.
13. Apply petroleum jelly to the circumference of the new oil seal, and install it to the front case using Tools.
CAUTION:
• Do not reuse oil seal.
• Apply petroleum jelly to oil seal.
14. Install the fork guide, shift fork spring, 2-4 fork, and L-H fork to the shift rod, and secure them with new retaining pins.
CAUTION:
Do not reuse retaining pins.Tool number : KV38100500 ( — )
SDIA3383E
Tool number : ST33200000 (J-26082)
SDIA2791E
SDIA2144E
Tool number A: ST30720000 (J-25405)
B: ST33200000 (J-26082)
Dimension : 4.0 - 4.6 mm (0.157 - 0.181 mm)
SDIA3191E
SDIA2142E
Revision: March 2010 2008 QX56

FRONT FINAL DRIVEDLN-229
< DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: M205]
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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. Refer to DLN-231,
"Inspection and Adjustment".
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-214, "
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: March 2010 2008 QX56

DLN-236
< PREPARATION >[REAR FINAL DRIVE: R230]
PREPARATION
KV381054S0
(J-34286)
Puller Removing front oil seal
ST30720000
(J-25405)
Drift • Installing front oil seal
• Installing drive pinion rear bearing outer
race
a: 77 mm (3.03 in) dia.
b: 55.5 mm (2.185 in) dia.
ST36230000
(J-25840-A)
Sliding hammer Removing side flange
KV40104100
(—)
Attachment Removing side flange
KV38100200
(J-26233)
Drift Installing side oil seal
a: 65 mm (2.56 in) dia.
b: 49 mm (1.93 in) dia.
KV38107900
(J-39352)
Protector Installing side flange
KV38100800
(J-25604-01)
Attachment Securing unit assembly
a: 541 mm (21.30 in)
b: 200 mm (7.87 in)
Tool number
(Kent-Moore No.)
Tool name
Description
ZZA0601D
ZZA0811D
ZZA0803D
ZZA0804D
ZZA1143D
S-NT129
SDIA0267E
Revision: March 2010
2008 QX56

REAR FINAL DRIVEDLN-249
< 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 assembly 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: March 2010 2008 QX56