Abs INFINITI QX56 2009 Factory Service Manual

DRIVE SHAFTFAX-9
< REMOVAL AND INSTALLATION >
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DRIVE SHAFT
Removal and InstallationINFOID:0000000003772250
REMOVAL
1. Remove wheel and tire using power tool.
2. Remove engine under cover using power tool.
3. Remove wheel sensor harness from mount on knuckle. CAUTION:
Do not pull on wheel sensor harness.
4. Without disassembling the hydraulic lines, remove brake caliper using power tool. Reposition it aside with wire. Refer to BR-31, "Removal and Installation of Brake Caliper and Rotor"
.
NOTE:
Avoid depressing brake pedal while brake caliper is removed.
5. Remove coil spring and shock absorber assembly using power tool. Refer to FSU-14, "Removal and
Installation" .
6. Separate upper link ball joint stud from steering knuckle using Tool.
 Support lower link with jack.
7. Remove cotter pin, then remove drive shaft nut.
8. Remove drive shaft bolts from front final drive.
9. Remove drive shaft from wheel hub and bearing assembly. CAUTION:
 When removing drive shaft, do not apply an excessiveangle to drive shaft joint. Also be careful not to exces-
sively extend slide joint.
INSPECTION AFTER REMOVAL
 Move joint up, down, left, right, and in axial directi on. Check for any rough movement or significant loose-
ness.
 Check boot for cracks or other damage, and for grease leakage.
 If damaged, disassemble drive shaft to verify damage, and repair or replace as necessary.
1. Cotter pin 2. Drive shaft nut 3. Drive shaft
WDIA0329E
Tool number : ST29020001 (J-24319-01)
LEIA0095E
RAA0030D
Revision: December 20092009 QX56

FL-8
< REMOVAL AND INSTALLATION >
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
9. Remove the inspection hole cover by turning the retainers 90 °
degrees clockwise.
• Remove the O-ring.
10. Disconnect the fuel level sensor, fuel filter, and fuel pump assembly electrical connector, the EVAP hose, and the fuel feed
hose.
Disconnect the quick connector as follows:
• Hold the sides of the connector, push in tabs and pull out the
tube.
• If the connector and the tube are stuck together, push and pull several times until they start to move. Then disconnect them
by pulling.
CAUTION:
LBIA0382E
LBIA0383E
SFE562A
Revision: December 20092009 QX56

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLYFL-9
< REMOVAL AND INSTALLATION >
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• The quick connector can be
disconnected when the tabs
are completely depressed. Do not twist the quick connec-
tor more than necessary.
• Do not use any tools to di sconnect the quick connector.
• Keep the resin tube away from heat. Be especially careful
when welding near the tube.
• Prevent any acid liquids such as battery electrolyte, from getting on the resin tube.
• Do not bend or twist the resin tube during connection.
• Do not remove the remaining retainer on the hard tube (or
the equivalent) except when the resin tube or the retainer
is replaced.
• When the resin tube or hard tube, or the equivalent, is
replaced, also replace the retainer with a new one (white
colored retainer).
• To keep the quick connector clean and to avoid damage
and contamination from foreign materials, cover the quick
connector with plastic bags or suitable material as shown.
11. Remove the lock ring using Tool.
12. Remove the fuel level sensor, fuel filter, and fuel pump assem- bly. Remove and discard the fuel level sensor, fuel filter, and fuel
pump assembly O-ring.
CAUTION:
• Do not bend the float arm during removal.
• Avoid impacts such as droppi ng when handling the com-
ponents.
INSTALLATION
Installation is in the reverse order of removal.
• For installation, use a new fuel level sensor, fuel filter, and fuel pump assembly O-ring.
• Connect the quick connector as follows:
- Check the connection for any damage or foreign materials.
- Align the connector with the pipe, t hen insert the connector straight into the pipe until a click is heard.
PBIC1268E
PBIC0163E
Tool number : — (J-46536)
LBIA0389E
Revision: December 20092009 QX56

FL-10
< REMOVAL AND INSTALLATION >
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
- After connecting the quick connector, make sure that the connec-
tion is secure by checking as follows:
- Pull the tube and the connector to make sure they are securely
connected.
- Visually inspect the connector to make sure the two retainer tabs are securely connected.
INSPECTION AFTER INSTALLATION
1. Turn the ignition switch ON but do not start engi ne, then check the fuel pipes and hose connections for
leaks while applying fuel pressure to the system.
2. Start the engine and rev it above idle speed, then check t hat there are no fuel leaks at any of the fuel pipe
and hose connections.
PBIC1653E
Revision: December 20092009 QX56

FUEL TANKFL-13
< REMOVAL AND INSTALLATION >
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13. Remove the inspection hole cover by turning the retainers 90
°
degrees clockwise.
• Remove the O-ring.
14. Disconnect the fuel level sensor, fuel filter, and fuel pump assembly electrical connector, the EVAP hose, and the fuel feed
hose.
Disconnect the quick connector as follows:
• Hold the sides of the connector, push in tabs and pull out the
tube.
• If the connector and the tube are stuck together, push and pull several times until they start to move. Then disconnect them
by pulling.
CAUTION:
LBIA0382E
LBIA0383E
SFE562A
Revision: December 20092009 QX56

FL-14
< REMOVAL AND INSTALLATION >
FUEL TANK
• The quick connector can be disconnected when the tabsare completely depressed. Do not twist the quick connec-
tor more than necessary.
• Do not use any tools to di sconnect the quick connector.
• Keep the resin tube away from heat. Be especially careful
when welding near the tube.
• Prevent any acid liquids such as battery electrolyte, from getting on the resin tube.
• Do not bend or twist the resin tube during connection.
• Do not remove the remaining retainer on the hard tube (or
the equivalent) except when the resin tube or the retainer
is replaced.
• When the resin tube or hard tube, or the equivalent, is
replaced, also replace the retainer with a new one (white
colored retainer).
• To keep the quick connector clean and to avoid damage
and contamination from foreign materials, cover the quick
connector with plastic bags or suit able material as shown.
15. Remove the four bolts and remove the fuel tank shield.
16. Remove the propeller shaft. Refer to DLN-196, "
Removal and Installation".
17. Disconnect fuel filler hose, and vent hose at the fuel tank side.
18. Remove the fuel tank strap bolts while supporting the fuel tank with a suitable lift jack.
19. Disconnect the EVAP hose from the molded clip in the top of the fuel tank while lowering the fuel tank.
20. Lower the fuel tank using a suitable lift jack and remove it.
PBIC1268E
PBIC0163E
LBIA0387E
Revision: December 20092009 QX56

FUEL TANKFL-15
< REMOVAL AND INSTALLATION >
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21. If necessary, remove the lock ring using Tool.
22. If necessary, remove the fuel level sensor, fuel filter, and fuel
pump assembly. Discard the fuel level sensor, fuel filter, and fuel
pump assembly O-ring.
CAUTION:
• Do not bend the float arm during removal.
• Avoid impacts such as droppi ng when handling the com-
ponents.
INSTALLATION
Installation is in the reverse order of removal.
• For installation, use a new fuel level sensor, fuel filter, and fuel pump assembly O-ring.
• Connect the quick connector as follows:
- Check the connection for any damage or foreign materials.
- Align the connector with the pipe, t hen insert the connector straight into the pipe until a click is heard.
- After connecting the quick connector, make sure that the connec-
tion is secure by checking as follows:
- Pull the tube and the connector to make sure they are securely connected.
- Visually inspect the connector to make sure the two retainer tabs are securely connected.
INSPECTION AFTER INSTALLATION
1. Turn the ignition switch ON but do not start en gine, then check the fuel pipe and hose connections for
leaks while applying fuel pressure.
2. Start the engine and rev it above idle, then check that there are no fuel leaks at any of the fuel pipe and
hose connections. Tool number : — (J-46536)
LBIA0389E
PBIC1653E
Revision: December 20092009 QX56

FL-16
< DISASSEMBLY AND ASSEMBLY >
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
DISASSEMBLY AND ASSEMBLY
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
Disassembly and AssemblyINFOID:0000000003771775
Fuel Level Sender Unit
Disassembly
1. Disconnect the harness connectors and the wire connector.
2. Remove the fuel sensor from the pump assembly.
3. Depress the tabs and remove the floater arm assembly.
Assembly
Assembly is in the reverse order of disassembly.
AWBIA0680ZZ
1. Harness connector 2. Sending unit module 3. Fuel sensor
4. Floater arm assembly
Revision: December 20092009 QX56

FSU-1
SUSPENSION
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SECTION FSU
A
B
FSU
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O PCONTENTS
FRONT SUSPENSION
PRECAUTION ....... ........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
Precaution .................................................................3
PREPARATION ............................................4
PREPARATION .............................................. .....4
Special Service Tool ........................................... ......4
Commercial Service Tool ..........................................4
SYMPTOM DIAGNOSIS ...............................5
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ........................ .....
5
NVH Troubleshooting Chart ................................ ......5
ON-VEHICLE MAINTENANCE .....................6
ON-VEHICLE SERVICE ................................. .....6
Front Suspension Parts ....................................... ......6
Front Wheel Alignment ..............................................6
UPPER BALL JOINT AND LOWER BALL
JOINT .................................................................
10
Inspection ............................................................ ....10
KNUCKLE ...................................................... ....12
On-Vehicle Inspection and Service ..................... ....12
ON-VEHICLE REPAIR .................................13
FRONT SUSPENSION ASSEMBLY .............. ....13
Component .......................................................... ....13
REMOVAL AND INSTALLATION ...............14
COIL SPRING AND SHOCK ABSORBER .......14
Removal and Installation ..................................... ....14
Disposal ...................................................................14
STABILIZER BAR .............................................15
Removal and Installation .........................................15
UPPER LINK .....................................................16
Removal and Installation ..................................... ....16
LOWER LINK ....................................................17
Removal and Installation .........................................17
UPPER BALL JOINT AND LOWER BALL
JOINT ................................................................
18
Removal and Installation .........................................18
KNUCKLE .........................................................19
Removal and Installation ..................................... ....19
DISASSEMBLY AND ASSEMBLY ..............21
COIL SPRING AND SHOCK ABSORBER .......21
Disassembly and Assembly ................................. ....21
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... ...
23
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
23
General Specification .......................................... ....23
Spring Free Height ..................................................23
Wheel Alignment (Unladen*1) ..................................23
Ball Joint .............................................................. ....24
Wheelarch Height (Unladen*1) ................................24
Revision: December 20092009 QX56

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGFSU-5
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHN ESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000003772268
Use the chart below to help you find the cause of the symptom. Repair or replace parts as necessary.
x: ApplicableReference page
FSU-13FSU-14FSU-13FSU-13FSU-24FSU-6FSU-6FSU-6
DLN-184, "
NVH Troubleshooting Chart
"
DLN-208, "
NVH Troubleshooting Chart
"
FAX-5, "
NVH Troubleshooting Chart
"
FAX-5, "
NVH Troubleshooting Chart
"
WT-36, "
NVH Troubleshooting Chart
"
WT-36, "
NVH Troubleshooting Chart
"
BR-6, "
NVH Troubleshooting Chart
"
ST-12, "
NVH Troubleshooting Chart
"
Possible Cause and
SUSPECTED PARTS
Improper installation, looseness
Shock absorber deformation,
damage or deflection
Bushing or mounting deterioration
Parts interference
Spring fatigue
Suspension looseness
Incorrect wheel alignment
Stabilizer bar fatigue
PROPELLER SHAFT
FRONT FINAL DRIVE
DRIVE SHAFT
WHEEL HUB
TIRES
ROAD WHEEL
BRAKES
STEERING
Symptom
Noise
× × ×××× × × ×× × × ××
Shake × × ×× × × ×× × × ××
Vibration × × ××× × ×× × ×
Shimmy × × ×× × × × × ××
Shudder ××× ×××××
Poor quality ride or handling × × ××× ×× × × ×
Revision: December 20092009 QX56