2011 INFINITI QX56 service

FAX-12
< PRECAUTION >[4WD]
PRECAUTIONS
5. When the repair work is completed, re-connect bot
h battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button igniti on switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT-III.
Precautions for Drive ShaftINFOID:0000000006225390
 Observe the following precautions when disassembling and assembling drive shaft.
- Never disassemble joint sub-assembly because it is non-overhaul parts.
- Perform work in a location which is as dust-free as possible.
- Clean the parts, before disassembling and assembling.
- Prevent the entry of foreign objects dur ing disassembly of the service location.
- Reassemble disassembled parts carefully in the correct order. If work is interrupted, a clean cover must be placed over parts.
- Use paper waste. Fabric shop cloths must not be used because of the danger of lint adhering to parts.
- Clean disassembled parts (except for rubber parts) with kerosene which shall be removed by blowing with
air or wiping with paper waste.
Revision: 2010 May2011 QX56

PREPARATIONFAX-13
< PREPARATION > [4WD]
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PREPARATION
PREPARATION
Special Service ToolsINFOID:0000000006225391
The actual shapes of Kent-Moore t ools may differ from those of special service tools illustrated here.
Commercial Service ToolsINFOID:0000000006225392
Tool number
(Kent-Moore No.)
Tool name Description
KV40107300
( − )
Boot band crimping tool Installing boot band
KV40107500
( − )
Drive shaft attachment Removing drive shaft
KV38106300
( − )
Protector
a: 35 mm (1.38 in) dia. Installing drive shaft
ZZA1229D
ZZA1230D
PDIA1183J
Tool name
Description
Power tool Loosening bolts and nuts
Ball joint remover  Removing ball joint for steering knuckle  Removing hub bolt
PBIC0190E
NT146
Revision: 2010 May2011 QX56

FRONT WHEEL HUB AND KNUCKLEFAX-19
< REMOVAL AND INSTALLATION > [4WD]
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7. Set suitable jack under lower link.
8. Remove shock absorber mounting bolt from lower link. Refer to FSU-10, "
Removal and Installation".
9. Separate upper link from steering knuckle, using the ball joint remover (commercial service tool), and
remove upper link.
CAUTION:
 Temporarily tighten the nut to prevent damage to threads and to prevent the ball joint remover
from suddenly coming off.
 Never damage ball joint boot.
10. Remove cotter pin, and then loosen wheel hub lock nut.
11. Put matching mark on drive shaft and wheel hub and bearing assembly. CAUTION:
Use paint or similar substance for matc hing marks. Never scratch the surface.
12. Patch wheel hub lock nut with a piece of wood. Hammer the wood to disengage wheel hub and bearing assembly from drive shaft.
CAUTION:
 Never place drive shaft joint at an extreme angle. Also be careful not to overextend slide joint.
 Never allow drive shaft to hang down without support for or joint sub-assembly, shaft and the
other parts.
NOTE:
Use suitable puller, if wheel hub and bearing assembly and drive shaft cannot be separated even after
performing the above procedure.
13. Remove wheel hub lock nut.
14. Remove wheel hub and bearing assembly, and then remove splash guard.
15. Remove lower link from steering knuckle. CAUTION:
Never damage ball joint boot.
16. Remove steering knuckle.
17. Remove hub bolts (1) from wheel hub and bearing assembly, using the ball joint remover (A) (commercial service tool).
CAUTION:
 Remove hub bolt only when necessary.
 Never hammer the hub bolt to avoid impact to the wheel
hub and bearing assembly.
 Pull out the hub bolt in a di rection perpendicular to the
wheel hub and bearing assembly.
18. Perform inspection after removal. Refer to FAX-20, "
Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Place a suitable washer (A) as shown in the figure to install the hub
bolts (1) by using the tightening force of the nut (B).
CAUTION:
 Check that there is no cl earance between wheel hub and
bearing assembly, and hub bolt.
 Never reuse hub bolt.
 Use the following torque range for tightening the wheel hub lock nut.
CAUTION:
 Since the drive shaft is assembled by press-fitting , use the tightening torque range for the wheel
hub lock nut.
 Be sure to use torque wrench to tighten th e wheel hub lock nut. Never use a power tool.
 Perform the final tightening of each of parts under unladen conditions, which were removed when removing
wheel hub and bearing assembly and steering knuckle.
JPDIF0299ZZ
: 118 – 123 N·m (12.1 – 12.5 kg-m, 87 – 90 ft-lb)
JPDIF0300ZZ
Revision: 2010 May2011 QX56

FAX-22
< REMOVAL AND INSTALLATION >[4WD]
FRONT DRIVE SHAFT
FRONT DRIVE SHAFT
Exploded ViewINFOID:0000000006225402
Removal and InstallationINFOID:0000000006225403
REMOVAL
1. Remove tires.
2. Remove brake hose bracket. Refer to
BR-23, "
FRONT : Removal and Installation".
3. Remove caliper assembly mounting bolts. Hang caliper assembly in a place where it will not interfere with work. Refer to BR-37, "
BRAKE CALIPER ASSEMBLY : Removal and Installation".
CAUTION:
Never depress brake pedal while brake caliper is removed.
4. Remove disc rotor. Refer to FAX-18, "
Removal and Installation".
5. Remove wheel sensor harness. Refer to BRC-134, "
FRONT WHEEL SENSOR : Removal and Installa-
tion".
CAUTION:
Never pull on wheel sensor harness.
6. Remove height sensor from upper link (right side). Refer to EXL-136, "
Removal and Installation".
7. Remove steering outer socket. Refer to ST-42, "
Removal and Installation".
8. Set suitable jack under lower link.
9. Remove shock absorber mounting bolt from lower link. Refer to FSU-10, "
Removal and Installation".
10. Separate upper link from steering knuckle, using t he ball joint remover (commercial service tool), and
remove upper link.
CAUTION:
 Temporarily tighten the nut to prevent damage to threads and to prevent the ball joint remover
from suddenly coming off.
1. Circular clip 2. Dust shield 3. Housing
4. Snap ring 5. Ball cage/steel ball/inner race assem-
bly6. Stopper ring
7. Boot band 8. Boot 9. Shaft
10. Circular clip 11. Joint sub-assembly : Wheel side
: NISSAN genuine grease or an equivalent.
Refer to GI-4, "
Components" for symbols not described on the above.
JPDIF0279ZZ
Revision: 2010 May2011 QX56

FRONT DRIVE SHAFTFAX-23
< REMOVAL AND INSTALLATION > [4WD]
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 Never damage ball joint boot.
11. Remove cotter pin, and then loosen wheel hub lock nut.
12. Patch wheel hub lock nut with a piece of wood. Hammer the wood to disengage wheel hub and bearing assembly from drive shaft.
CAUTION:
 Never place drive shaft joint at an extreme angle. Also be careful not to overextend slide joint.
 Never allow drive shaft to hang down without support for or joint sub-assembly, shaft and the
other parts.
NOTE:
Use suitable puller, if wheel hub and bearing assembly and drive shaft cannot be separated even after
performing the above procedure.
13. Remove wheel hub lock nut.
14. Remove fender protector. Refer to EXT-23, "
FENDER PROTECTOR : Removal and Installation".
15. Remove drive shaft from front final drive using the drive shaft attachment [SST: KV40107500 ( −)] (A) and a sliding ham-
mer (commercial service tool) (B) while inserting tip of the drive
shaft attachment between housing and front final drive.
CAUTION:
 Never place drive shaft joint at an extreme angle when
removing drive shaft. Also be careful not to overextend
slide joint.
 Confirm that the circular clip is attached to the drive shaft.
16. Perform inspection after removal. Refer to FAX-28, "
Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Always replace final drive side oil seal with new one when installing drive shaft. Refer to DLN-160,
"Removal and Installation"
 Place the protector [SST: KV38106300 (−)] (A) onto final drive
to prevent damage to the oil seal while inserting drive shaft. Slide
drive shaft sliding joint and tap with a hammer to install securely.
CAUTION:
Check that circular clip is completely engaged.
 Use the following torque range for tightening the wheel hub lock nut.
CAUTION:
 Since the drive shaft is assembled by press-fitting, use the tightening torque range for the wheel hub lock nut.
 Be sure to use torque wrench to tighten th e wheel hub lock nut. Never use a power tool.
 Perform the final tightening of each of parts under unladen conditions, which were removed when removing
wheel hub and bearing assembly and steering knuckle.
 Never reuse cotter pin.
 Perform inspection after installation. Refer to FAX-28, "
Inspection".
WHEEL SIDE
WHEEL SIDE : Disassembly and AssemblyINFOID:0000000006225404
DISASSEMBLY
1. Fix shaft with a vise.
CAUTION:
Protect shaft when fixing with a vi se using aluminum or copper plates.
2. Remove dust shield from joint sub-assembly.
3. Remove boot bands and then remove boot from joint sub-assembly.
JPDIF0004ZZ
: 118 – 123 N·m (12.1 – 12.5 kg-m, 87 – 90 ft-lb)
JPDIF0023ZZ
Revision: 2010 May2011 QX56

FAX-24
< REMOVAL AND INSTALLATION >[4WD]
FRONT DRIVE SHAFT
4. Screw the drive shaft puller (commercial service tool) (A) 30 mm
(1.18 in) or more into the thread of joint sub-assembly, and pull
joint sub-assembly from shaft.
CAUTION:
 If joint sub-assembly cannot be removed after five ormore unsuccessful attempts, replace shaft and joint sub
assembly as a set.
 Align drive shaft puller an d drive shaft and remove them
by pulling directory.
5. Remove circular clip from shaft.
6. Remove boot from shaft.
7. Perform inspection after disassembly. Refer to FAX-28, "
Inspec-
tion".
ASSEMBLY
1. While rotating ball cage, clean old grease on joint sub-assembly with paper waste.
2. Fill serration slot joint sub-assembly (1) with NISSAN genuine
grease or equivalent until the serration slot and ball groove
become full to the brim.
CAUTION:
After applying grease, use a sh op cloth to wipe off old
grease that has oozed out.
3. Install boot and boot bands to shaft. CAUTION:
 Wrap serration on shaft with tape (A) to protect the boot
from damage.
 Never reuse boot and boot band.
4. Remove the tape wrapped around the serration on shaft.
5. Position circular clip on groove at the shaft edge. CAUTION:
Never reuse circular clip.
NOTE:
Drive joint inserter is recommended when installing circular clip.
6. Align both center axles of the shaft edge and joint sub-assembly. Then assemble shaft with joint sub-assembly holding circular clip.
7. Install joint sub-assembly to shaft using plastic hammer. CAUTION:
Confirm that joint sub-assembly is correctly engaged while
rotating drive shaft.
8. Apply the specified amount of grease into the boot inside from large diameter side of boot.
JPDIG0151ZZ
JPDIF0008ZZ
Grease amount : Refer to FAX-29, "Drive Shaft".
JPDIF0009ZZ
RAC0049D
Revision: 2010 May2011 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)
FAX-29
< SERVICE DATA AND SPECIFICATIONS (SDS) [4WD]
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Wheel Hub and Bearing AssemblyINFOID:0000000006225407
Drive ShaftINFOID:0000000006225408
Item Standard
Axial end play 0.05 mm (0.002 in) or less
ItemStandard
Wheel side Final drive side
Grease quantity 205 – 225 g (7.23 – 7.94 oz) 130 – 150 g (4.59 – 5.29 oz)
Boots installed length 157.8 mm (6.21 in) 196.4 mm (7.73 in)
Revision: 2010 May2011 QX56

FL-1
ENGINE
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CONTENTS
FUEL SYSTEM
PRECAUTION ................ ...............................2
PRECAUTIONS .............................................. .....2
General Precautions ........................................... ......2
PREPARATION ............................................3
PREPARATION .............................................. .....3
Special Service Tool ........................................... ......3
Commercial Service Tools ........................................3
PERIODIC MAINTENANCE ..........................4
FUEL SYSTEM ............................................... .....4
Inspection ............................................................ ......4
Quick Connector .......................................................4
REMOVAL AND INSTALLATION ................5
FUEL LEVEL SENSOR UNIT, FUEL FILTER
AND FUEL PUMP ASSEMBLY ..................... .....
5
Exploded View .................................................... ......5
Removal and Installation ..................................... .....5
Inspection .................................................................7
FUEL TANK ..................................... ..................8
Exploded View ..................................................... .....8
Removal and Installation ..........................................8
Inspection .................................................................9
EVAP CANISTER ..............................................10
Exploded View .........................................................10
Hydraulic Layout ......................................................10
Removal and Installation .........................................12
Disassembly and Assembly .....................................12
Inspection ................................................................12
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .............................................
13
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
13
Fuel Tank ............................................................. ....13
Revision: 2010 May2011 QX56