2008 INFINITI QX56 service

DLN-192
< SYMPTOM DIAGNOSIS >[PROPELLER SHAFT: 2S1410]
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000001604433
Use the chart below to help you find the cause of the sy mptom. If necessary, repair or replace these parts.
×: ApplicableReference page
DLN-193, "
On-Vehicle Service
"
DLN-193, "
On-Vehicle Service
"
DLN-193, "
On-Vehicle Service
"
DLN-240, "
NVH Troubleshooting Chart
"
RAX-5, "
NVH Troubleshooting Chart
"
RSU-5, "
NVH Troubleshooting Chart
"
WT-41, "
NVH Troubleshooting Chart
"
WT-41, "
NVH Troubleshooting Chart
"
RAX-5, "
NVH Troubleshooting Chart
"
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: March 2010 2008 QX56

PROPELLER SHAFTDLN-193
< ON-VEHICLE REPAIR > [PROPELLER SHAFT: 2S1410]
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ON-VEHICLE REPAIR
PROPELLER SHAFT
On-Vehicle ServiceINFOID:0000000001604434
APPEARANCE AND NOISE INSPECTION
• Check the propeller shaft tube surface for dents or crac ks. If damaged, replace the propeller shaft assembly.
• Check the bearings for noise and damage. Repair or replace the bearings as necessary.
PROPELLER SHAFT VIBRATION
If a vibration is present at high speed, inspect the propeller shaft runout first.
1. Measure the runout of the propeller shaft tube at several points by rotating the final drive companion
flange with your hands.
2. If the runout exceeds specif ications, disconnect the propeller
shaft at the final drive companion flange; then rotate the com-
panion flange 90 °, 180 ° and 270 ° and reconnect the propeller
shaft.
3. Check the runout again. If the r unout still exceeds specifications,
replace the propeller shaft assembly.
4. After installation, check for vibration by driving vehicle. Limit
Propeller shaft run out : Refer to
DLN-199, "
Gen-
eral Specification"
SDIA1781E
Revision: March 2010 2008 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)DLN-199
< SERVICE DATA AND SPECIFICATIONS (SDS) [PROPELLER SHAFT: 2S1410]
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000004894346
2WD models Unit: mm (in)
Propeller Shaft Runout
Unit: mm (in)
Propeller Shaft Joint Flex Effort
Unit: N·m (kg-m, in-lb)
Journal Axial Play
Unit: mm (in)
4WD models
Propeller Shaft Runout
Unit: mm (in)
Propeller Shaft Joint Flex Effort
Applied model 2WD
VK56DE
A/T
Propeller shaft model 2S1410
Number of joints 2
Coupling method with rear final drive Flange type
Coupling method with transmission Sleeve type
Shaft length (Spider to spider) 1637.1 (64.45)
Shaft outer diameter 127.6 (5.02)
ItemLimit
Propeller shaft runout 1.02 (0.0402) or less
ItemLimit
Propeller shaft joint flex effort 2.26 N·m (0.23 kg-m, 20 in-lb) or less
ItemLimit
Journal axial play 0.02 (0.0008) or less
Applied model 4WD
VK56DE
A/T
Propeller shaft model 2S1410
Number of joints 2
Coupling method with rear final drive Flange type
Coupling method with transfer Sleeve type
Shaft length (Spider to spider) 1156.8 (45.54)
Shaft outer diameter 102.46 (4.03)
ItemLimit
Propeller shaft runout 1.02 (0.0402) or less
Revision: March 2010 2008 QX56

DLN-200
< SERVICE DATA AND SPECIFICATIONS (SDS) [PROPELLER SHAFT: 2S1410]
SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: N·m (kg-m, in-lb)
Journal Axial Play
Unit: mm (in)
Snap RingINFOID:0000000001604438
Unit: mm (in)
*Always check with the Parts Department for the latest parts information.Item
Limit
Propeller shaft joint flex effort 2.26 (0.23, 20) or less
ItemLimit
Journal axial play 0.02 (0.0008) or less
ThicknessColorPart Number*
1.99 (0.0783) White37146-C9400
2.02 (0.0795) Yellow37147-C9400
2.05 (0.0807) Red37148-C9400
2.08 (0.0819) Green37149-C9400
2.11 (0.0831) Blue37150-C9400
2.14 (0.0843) Light brown 37151-C9400
2.17 (0.0854) Black37152-C9400
2.20 (0.0866) No paint37153-C9400
Revision: March 2010 2008 QX56

PRECAUTIONSDLN-201
< PRECAUTION > [FRONT FINAL DRIVE: M205]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004857592
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:0000000004857591
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: March 2010 2008 QX56

PREPARATIONDLN-203
< PREPARATION > [FRONT FINAL DRIVE: M205]
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PREPARATION
PREPARATION
Special Service ToolINFOID:0000000001604440
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
K V 1 0 1111 0 0
(J-37228)
Seal cutter Removing carrier cover
ST35271000
(—)
Drift Installing drive pinion front bearing outer
race.
a: 72 mm (2.83 in) dia.
b: 36 mm (1.42 in) dia.
KV38100500
(J-25273)
Drift Installing front oil seal.
a: 80 mm (3.15 in) dia.
b: 60 mm (2.36 in) dia.
ST30021000
(—)
Puller • Removing side bearing inner race.
• Removing drive pinion rear bearing inner
race.
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
(—)
Drift Installing drive pinion rear bearing outer race.
a: 79 mm (3.11 in) dia.
b: 45 mm (1.77 in) dia.
c: 35.2 mm (1.39 in) dia.
S-NT046
ZZA0702D
ZZA0811D
ZZA0700D
ZZA1046D
SDIA0217J
Revision: March 2010
2008 QX56

PREPARATIONDLN-205
< PREPARATION > [FRONT FINAL DRIVE: M205]
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Commercial Service ToolINFOID:0000000001604441
KV40105230
(—)
Drift Installing drive pinion rear bearing outer race.
a: 92 mm (3.62 in) dia.
—
(C-4171)
Handle • Removing drive pinion front bearing outer
race
• Removing drive pinion rear bearing outer race
—
(D-103)
Remover Removing drive pinion front bearing outer
race
—
(C-4307)
Remover Removing drive pinion rear bearing outer
race
Tool number
(Kent-Moore No.)
Tool name
Description
ZZA0898D
LDIA0134E
LDIA0135E
LDIA0135E
(Kent-Moore No.)
Tool name
Description
(SP8P)
Slide hammer • Removing front oil seal
• Removing side oil seal
Power tool Loosening bolts and nuts
LDIA0133E
PBIC0190E
Revision: March 2010 2008 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)DLN-231
< SERVICE DATA AND SPECIFICATIONS (SDS) [FRONT FINAL DRIVE: M205]
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000001604450
* Option
Inspection and AdjustmentINFOID:0000000001604451
DRIVE GEAR RUNOUT
Unit: mm (in)
SIDE GEAR CLEARANCE
Unit: mm (in)
PRELOAD TORQUE
(Gear ratio :2.937 type)
Unit: N·m (kg-m, in-lb)
PRELOAD TORQUE
(Gear ratio :3.357 type)
Unit: N·m (kg-m, in-lb)
BACKLASH
Applied model 4WD
VK56DE A/T
SE LE, SE*
Final drive model M205
Gear ratio 2.9373.357
Number of teeth (Drive gear/Drive pinion) 47/1647/14
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
ItemLimit
Drive gear back face 0.08 (0.0031) or less
ItemStandard
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). 3.09 - 4.87 (0.32 - 0.49, 28 - 43)
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)
Revision: March 2010
2008 QX56