ABS INFINITI QX56 2007 Factory Service Manual

REAR BUMPER
EI-15
< SERVICE INFORMATION >
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REMOVAL
1. Disconnect the negative battery cable.
2. Remove quarter panel trim covers LH and RH.
3. Disconnect sonar sensor harness connector under rear fascia assembly.
4. Release retainer clips on both sides of rear fascia assembly with a 1/4 turn and top S clips and remove
fascia assembly.
5. Remove energy absorber.
6. Remove reinforcement assembly.
7. Remove nuts and remove retainer assembly.
• Remove S clips from retainer assembly.
8. Disconnect sonar sensors from sonar sensor retainers.
9. Remove sonar sensors and harness from rear fascia assembly.
• Disconnect sonar sensors from harness.
• Remove sonar sensor retainers from rear fascia assembly.
10. Remove bolts on each side of tow hitch and remove tow hitch.
11. Remove drafter duct from under LH quarter panel.
INSTALLATION
Installation is in the reverse order of removal.
10. Rear fascia assembly 11. Sonar sensor retainer 12. Tow hitch
13. Sonar sensor harness 14. Quarter panel trim cover RH

EM-68
< SERVICE INFORMATION >
CYLINDER HEAD
7. Remove the valve oil seal using Tool.
8. Replace the valve seat if necessary. Refer to EM-69, "
Inspection After Disassembly".
9. Replace the valve guide if necessary. Refer to EM-69, "
Inspection After Disassembly".
10. Remove the spark plug tube, as necessary.
• Remove the spark plug tube out of the cylinder head using suitable tool.
CAUTION:
• Do not damage the cylinder head.
• Do not remove the spark plug tube unless absolutely necessary. Once removed, the spark plug
tube will be deformed and cannot be reused.
ASSEMBLY
1. Install the valve guide if necessary. Refer to EM-69, "Inspection After Disassembly".
2. Install the valve seat if necessary. Refer to EM-69, "
Inspection After Disassembly".
3. Install the valve oil seal using Tool.
• Apply new engine oil on the new valve oil seal joint and seal
lip.
• Install the valve oil seal to the specified height "H".
4. Install the valves in their original position.
5. Install the valve spring seats.
6. Install the valve springs.
• Install the narrow pitch end (paint mark side) to the cylinder
head side.
7. Install the valve spring retainers.Tool number : KV10107902 (J-38959)
WBIA0478E
Tool number : KV10115600 (J-38958)
Height "H" (without valve spring installed)
Intake and exhaust : 14.3 - 14.9 mm (0.563 - 0.587 in)
WBIA0490E
SEM085D

DRIVE SHAFT
FAX-7
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DRIVE SHAFT
Removal and InstallationINFOID:0000000003532616
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-19, "
Removal and Installation of Brake Caliper and Disc 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-10, "
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 mounting bolts from front final drive.
9. Remove drive shaft from wheel hub and bearing assembly.
CAUTION:
• When removing drive shaft, do not apply an excessive
angle 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 direction. 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
LDIA0159E
Tool number : ST29020001 (J-24319-01)
LEIA0095E
RAA0030D

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
FL-7
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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:
• 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 disconnect 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.
SFE562A
PBIC1268E
PBIC0163E

FL-8
< SERVICE INFORMATION >
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
12. Remove the lock ring using Tool.
13. 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 dropping 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, then 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 engine, 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 that there are no fuel leaks at any of the fuel pipe
and hose connections.Tool number : — (J-46536)
LBIA0389E
PBIC1653E

FL-12
< SERVICE INFORMATION >
FUEL TANK
15. 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:
• 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 disconnect 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).
LBIA0383E
SFE562A
PBIC1268E

FUEL TANK
FL-13
< SERVICE INFORMATION >
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• 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.
16. Remove the four bolts and remove the fuel tank shield.
17. Remove the propeller shaft. Refer to PR-8
.
18. Disconnect fuel filler hose, and vent hose at the fuel tank side.
19. Remove the fuel tank strap bolts while supporting the fuel tank
with a suitable lift jack.
20. Disconnect the EVAP hose from the molded clip in the top of the fuel tank while lowering the fuel tank.
21. Lower the fuel tank using a suitable lift jack and remove it.
22. If necessary, remove the lock ring using Tool.
23. 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 dropping 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, then 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.
PBIC0163E
LBIA0387E
Tool number : — (J-46536)
LBIA0389E
PBIC1653E

FSU-1
SUSPENSION
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SECTION FSU
A
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FSU
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PCONTENTS
FRONT SUSPENSION
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution .................................................................2
PREPARATION ...................................................3
Special Service Tool .................................................3
Commercial Service Tool ..........................................3
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING .............................
4
NVH Troubleshooting Chart ......................................4
FRONT SUSPENSION ASSEMBLY ...................5
Component ................................................................5
ON-VEHICLE SERVICE ......................................6
Front Suspension Parts .............................................6
Front Wheel Alignment ..............................................6
COIL SPRING AND SHOCK ABSORBER ........10
Removal and Installation .........................................10
Disassembly and Assembly ....................................10
STABILIZER BAR ..............................................12
Removal and Installation .........................................12
UPPER LINK .....................................................13
Removal and Installation .........................................13
LOWER LINK ....................................................14
Removal and Installation .........................................14
UPPER BALL JOINT AND LOWER BALL
JOINT ................................................................
15
Removal and Installation .........................................15
Inspection ................................................................15
KNUCKLE .........................................................17
On-Vehicle Inspection and Service .........................17
Removal and Installation .........................................17
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
19
General Specification ..............................................19
Spring Free Height ..................................................19
Wheel Alignment (Unladen*1) *6 .............................19
Ball Joint ..................................................................20
Wheelarch Height (Unladen*1) ................................20

FSU-4
< SERVICE INFORMATION >
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000003532634
Use the chart below to help you find the cause of the symptom. Repair or replace parts as necessary.
x: ApplicableReference page
FSU-5FSU-10FSU-5FSU-5FSU-20FSU-6FSU-6FSU-6
PR-3, "
NVH Troubleshooting Chart
"
FFD-6, "
NVH Troubleshooting Chart
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FAX-4, "
NVH Troubleshooting Chart
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FAX-4, "
NVH Troubleshooting Chart
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WT-4, "
NVH Troubleshooting Chart
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WT-4, "
NVH Troubleshooting Chart
"
BR-4, "
NVH Troubleshooting Chart
"
PS-5, "
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
SymptomNoise× × ×××× × × ×× × × ××
Shake× × ×× × × ×× × × ××
Vibration× × ××× × ×× × ×
Shimmy× × ×× × × × × ××
Shudder××× ×××××
Poor quality ride or handling××××× ×× ×××

FRONT SUSPENSION ASSEMBLY
FSU-5
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FRONT SUSPENSION ASSEMBLY
ComponentINFOID:0000000003532635
1. Dust cover 2. Shock absorber 3. Upper link
4. Steering knuckle 5. Cotter pin 6. Bolt
7. Jounce bumper 8. Washer 9. Lower link
10. Stabilizer bar 11. Stabilizer bar bushing 12. Stabilizer bar mounting bracket
13. Connecting rod 14. Coil spring 15. Upper seat
16. Upper spring seat 17. Shock absorber bushing 18. Shock absorber mounting insulator
19. Spacer 20. Washer⇐Front
WEIA0156E