service INFINITI QX56 2010 Factory Service Manual

DLN-5
CEF
G H
I
J
K L
M A
B
DLN
N
O P
Removal and Installation
.......................................
245
SIDE OIL SEAL .............................................. ..247
Removal and Installation .......................................247
CARRIER COVER .......................................... ..249
Removal and Installation .......................................249
REMOVAL AND INSTALLA TION .............250
REAR FINAL DRIVE ...................................... ..250
Removal and Installation .......................................250
DISASSEMBLY AND AS SEMBLY ............253
REAR FINAL DRIVE .......................................253
Disassembly and Assembly ................................. ..253
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... .
270
SERVICE DATA AND SPECIFICATIONS
(SDS) ...............................................................
270
General Specification .......................................... ..270
Inspection and Adjustment ....................................270
Revision: April 20092010 QX56

DLN-120
< PRECAUTION >[ATX14B]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint Syst
em (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005327513
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005327515
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: April 20092010 QX56

DLN-122
< PRECAUTION >[ATX14B]
PRECAUTIONS
•
Before replacing transfer cont rol unit, perform transfer con-
trol unit input/output signal inspection and make sure transfer
control unit functions properly. Refer to DLN-81, "
Reference
Va lu e".
Service NoticeINFOID:0000000005148881
• After overhaul refill the transfer with new transfer fluid.
• Check the fluid level or replace the fluid only with the vehicle parked on level ground.
• During removal or installation, keep inside of transfer clear of dust or dirt.
• Disassembly should be done in a clean work area.
• Before proceeding with disassembly, thoroughly clean the transfer. It is important to prevent the internal parts from becoming contaminated by dirt or other foreign matter.
• Check for the correct installation status prior to removal or disassembly. If matchmarks are required, be cer-
tain they do not interfere with the function of the parts when applied.
• All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or reassembly.
• Check appearance of the disassembled parts for dam age, deformation, and unusual wear. Replace them
with new ones if necessary.
• Gaskets, seals and O-rings should be replaced any time the transfer is disassembled.
• In principle, tighten bolts or nuts gradually in several steps working diagonally from inside to outside. If tight-
ening sequence is specified, use it.
• Observe the specified torque when assembling.
• Clean and flush the parts sufficiently and blow-dry them.
• Be careful not to damage sliding surfaces and mating surfaces.
• Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere
with the operation of the transfer.
MEF040DB
Revision: April 20092010 QX56

PREPARATIONDLN-123
< PREPARATION > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
PREPARATION
PREPARATION
Special Service ToolINFOID:0000000005148882
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name Description
KV381054S0
(J-34286)
Puller • Removing front oil seal
• Removing rear oil seal
• Removing metal bushing
KV38100500
(—)
Drift • Installing front oil seal
a: 80 mm (3.15 in) dia.
b: 60 mm (2.36 in) dia.
ST30720000
(J-25405)
Drift • Installing rear oil seal
• Installing mainshaft front bearing and oil
seal
a: 77 mm (3.03 in) dia.
b: 55.5 mm (2.185 in) dia.
KV40105310
(—)
Drift • Installing dust cover
a: 89 mm (3.50 in) dia.
b: 80.7 mm (3.17 in) dia.
ST22360002
(J-25679-01)
Drift • Installing side oil seal
a: 23 mm (0.91 in) dia.
b: 32 mm (1.26 in) dia.
ST35300000
(—)
Drift • Removing sun gear assembly and planetary
carrier assembly
• Removing carrier bearing
• Installing metal bushing
a: 59 mm (2.32 in) dia.
b: 45 mm (1.77 in) dia.
ZZA0601D
ZZA0811D
ZZA0811D
ZZA1003D
ZZA1091D
NT073
Revision: April 20092010 QX56

PREPARATIONDLN-125
< PREPARATION > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
Commercial Service ToolINFOID:0000000005148883
KV31103300
(—)
Drift • Removing press flange snap ring
• Installing press flange snap ring
• Installing carrier bearing
a: 76.3 mm (3.004 in) dia.
b: 130 mm (5.12 in)
KV38100300
(J-25523)
Drift • Removing mainshaft rear bearing
a: 54 mm (2.13 in) dia.
b: 46 mm (1.81 in) dia.
c: 32 mm (1.26 in) dia.
ST15310000
(J-25640-B)
Drift • Installing mainshaft rear bearing
a: 96 mm (3.78 in) dia.
b: 84 mm (3.31 in) dia.
KV40100621
(J-25273)
Drift • Installing front drive shaft front bearing
• Installing front drive shaft rear bearing
a: 76 mm (2.99 in) dia.
b: 69 mm (2.72 in) dia.
ST30032000
(J-26010-01)
Base • Installing front drive shaft front bearing
• Installing front drive shaft rear bearing
a: 38 mm (1.50 in) dia.
b: 80 mm (3.15 in) dia.
ST33220000
(—)
Drift • Installing needle bearing
a: 37 mm (1.46 in) dia.
b: 31 mm (1.22 in) dia.
c: 22 mm (0.87 in) dia.
Tool number
(Kent-Moore No.)
Tool name
Description
NT668
ZZA1046D
ZZA0908D
NT086
NT660
ZZA1046D
Revision: April 20092010 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)DLN-179
< SERVICE DATA AND SPECIFICATIONS (SDS) [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000005148896
Inspection and AdjustmentINFOID:0000000005148897
CLEARANCE BETWEEN INNER GEAR AND OUTER GEAR
Unit: mm (in)
CLUTCH
Unit: mm (in)
PINION GEAR END PLAY
Unit: mm (in)
CLEARANCE BETWEEN SHIFT FORK AND SLEEVE
Unit: mm (in)
SELECTIVE PARTS
Sub-oil Pump
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information. Applied model
4WD
VK56DE A/T
Transfer model AT X 1 4 B
Fluid capacity (Approx.) (US qt, lmp qt) 3.0 (3-1/8, 2-5/8)
Gear ratio High
1.000
Low 2.625
Number of teeth Planetary
gear
Sun gear
57
Internal gear 91
Front drive sprocket 38
Front drive shaft 38
ItemSpecification
Sub-oil pump 0.015 - 0.035 (0.0006 - 0.0014)
Main oil pump 0.015 - 0.035 (0.0006 - 0.0014)
ItemLimit value
Drive plate 1.4 (0.055)
ItemStandard
Pinion gear end play 0.1 - 0.7 (0.004 - 0.028)
ItemStandard
Shift fork and sleeve Less than 0.36 (0.0142)
Gear thicknessPart number*
Inner gear Outer gear
9.27 - 9.28 (0.3650 - 0.3654) 31346 0W46231347 0W462
9.28 - 9.29 (0.3654 - 0.3657) 31346 0W46131347 0W461
9.29 - 9.30 (0.3657 - 0.3661) 31346 0W46031347 0W460
Revision: April 20092010 QX56

DLN-180
< SERVICE DATA AND SPECIFICATIONS (SDS) [ATX14B]
SERVICE DATA AND SPECIFICATIONS (SDS)
Main Oil Pump
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Control Valve
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Control Valve Spring
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Return Spring
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.Gear thickness
Part number*
Inner gear Outer gear
8.27 - 8.28 (0.3256 - 0.3260) 31346 7S11231347 7S112
8.28 - 8.29 (0.3260 - 0.3264) 31346 7S11131347 7S111
8.29 - 8.30 (0.3264 - 0.3268) 31346 7S11031347 7S110
Mounting position
(Part name) Part number*
Outer dia.Overall length
L1
(2-4 shift valve) 31772 21X00
8.0 (0.315)38.5 (1.516)
L2
(Clutch valve) 31772 80X11
10.0 (0.394)40.0 (1.575)
L4
(Pilot valve) 31772 80X11
10.0 (0.394)40.0 (1.575)
L5
(Regulator valve) 31741 0W410
12.0 (0.472)68.0 (2.677)
Mounting position
(Part name) Part number* Free length Outer dia. Overall length
L1
(2-4 shift valve spring) 31742 2W500 31.85 (1.2539) 7.0 (0.276) 0.6 (0.024)
L2
(Clutch valve spring) 31742 2W505 40.6 (1.598) 8.9 (0.350) 0.7 (0.028)
L4
(Pilot valve spring) 31742 0W410 28.1 (1.106) 9.0 (0.354) 1.2 (0.047)
L5
(Regulator valve spring) 31742 2W515 39.7 (1.563) 11.0 (0.433) 1.3 (0.051)
Stamped mark
Part number*Free length
1 31521 7S11142.7 (1.168)
2 31521 7S11243.1 (1.697)
3 31521 7S11343.6 (1.717)
4 31521 7S11444.0 (1.731)
Revision: April 20092010 QX56

PRECAUTIONSDLN-181
< PRECAUTION > [PROPELLER SHAFT: 2F1310]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005335152
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000005335151
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS , an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
Revision: April 20092010 QX56

PREPARATIONDLN-183
< PREPARATION > [PROPELLER SHAFT: 2F1310]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
PREPARATION
PREPARATION
Commercial Service ToolINFOID:0000000005148898
Tool name Description
Power tool Loosening bolts and nuts
PBIC0190E
Revision: April 20092010 QX56

DLN-184
< SYMPTOM DIAGNOSIS >[PROPELLER SHAFT: 2F1310]
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000005148899
Use the chart below to help you find the cause of the sy mptom. If necessary, repair or replace these parts.
×: ApplicableReference page
DLN-185, "
On-Vehicle Service
"
DLN-185, "
On-Vehicle Service
"
DLN-185, "
On-Vehicle Service
"
DLN-208, "
NVH Troubleshooting Chart
"
RAX-5, "
NVH Troubleshooting Chart
"
RSU-5, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
RAX-10, "
Removal and Installation
"
BR-6, "
NVH Troubleshooting Chart
"
ST-12, "
NVH Troubleshooting Chart
"
Possible cause and suspected parts
Uneven rotation torque
Rotation imbalance
Excessive run out
Differential
Axle
Suspension
Tires
Road wheel
Drive shaft
Brakes
Steering
Symptom Noise
×××××××××××
Shake ×××××××
Vibration ××××××××
Revision: April 20092010 QX56