Coil INFINITI QX56 2011 Factory Owner's Guide

EM-84
< REMOVAL AND INSTALLATION >
CAMSHAFT
 Move control shaft (A) to the small stopper and large stopper tocheck that the control shaft functions smoothly.
CAUTION:
Turn VVEL ladder assembly upside down to prevent the drive
shaft from dropping off.
RINK CHECK FOR BACK-LASH (BONDING) Check that the link and the shaft of drive shaft and control shaft are
not fixed.
 Check this by moving drive shaft and control shaft in the axial and
rotation directions.
 If there is an unusualness related to the above three items, replace VVEL ladder assembly & cylinder head
assembly.
NOTE:
VVEL ladder assembly cannot be replaced as a singl e part, because it is machined together with cylinder
head assembly.
INSPECTION AFTER ASSEMBLY
Inspection of Camshaft Sprocket (INT) Oil Groove
CAUTION:
 Perform this inspection only when DTC P0011, P 0021 are detected in self-diagnostic results of CON-
SULT-III and it is directed according to inspection procedure of EC section. Refer to EC-177, "
DTC
Logic".
 Check when engine is cold to prevent burns from the splashing engine oil.
1. Check engine oil level. Refer to LU-7, "
Inspection".
2. Perform the following procedure to prevent the engine from being unintentionally started while checking.
a. Release the fuel pressure. Refer to EC-153, "
Work Procedure".
b. Disconnect ignition coil and injector harness connectors.
3. Remove valve timing control solenoid valve. Refer to EM-61, "
Exploded View".
4. Crank engine, and then check that engine oil comes out from valve timing control solenoid valve hole (A). End crank after
checking.
WARNING:
Be careful not to touch rotati ng parts (drive belt, idler pul-
ley, and crankshaft pulley, etc.).
CAUTION:
 Prevent splashing by using a shop cloth to prevent the worker from injury from en gine oil and to prevent engine
oil contamination.
 Prevent splashing by using a shop cloth to prevent engine oil from being splashed to engine and
vehicle. Especially, be careful not to apply engine oil to rubber parts of drive belt, engine mount-
ing insulator, etc. Wipe engine oil out immediately if it is splashed.
: Engine front
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1 : Valve timing control cover (bank 2)
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Revision: 2010 May2011 QX56

ENGINE STAND SETTINGEM-103
< UNIT DISASSEMBLY AND ASSEMBLY >
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UNIT DISASSEMBLY AND ASSEMBLY
ENGINE STAND SETTING
SettingINFOID:0000000006289579
NOTE:
Explained here is how to disassemble with engine stand s
upporting transmission surface. When using a differ-
ent type of engine stand, note the difference in the steps, etc.
1. Remove the engine assembly from the vehicle. Refer to EM-98, "
Exploded View".
2. Remove crankshaft pulley. Refer to EM-96, "
FRONT OIL SEAL : Removal and Installation".
NOTE:
The drive plate is fixed with a ring gear stopper [SST: KV10119200 (J-49277)]. Loosen the crankshaft pul-
ley mounting bolts before installing the engine stand.
3. Remove the parts that may restrict installation of engine to a widely used engine stand.  Fix crankshaft with a ring gear stopper [SST: KV10119200 (J-49277)]. Loosen drive plate mounting bolt
with power tool.
 Check for deformation or damage of drive plate. Refer to EM-115, "
Inspection".
NOTE:
The procedure is described assuming that you us e a widely used engine stand holding the surface, to
which transmission is installed.
4. Remove pilot converter using the pilot bushing puller (commercial service tool), if necessary.
5. Lift the engine with hoist to inst all it onto the widely used engine stand.
CAUTION:
Use an engine stand that has a load capacity [240 kg (529 lb) or more] large enough for supporting
the engine weight.
 If the load capacity of the stand is not adequate, remove the following parts beforehand to reduce the potential risk of overturning the stand.
- Remove intake manifold. Refer to EM-30, "
Exploded View".
- Remove fuel injector and fuel tube assembly. Refer to EM-48, "
Exploded View".
- Remove ignition coil. Refer to EM-29, "
Exploded View".
- Remove rocker cover. Refer to EM-33, "
Exploded View".
- Remove exhaust manifold. Refer to EM-40, "
Exploded View".
- Other removable brackets. NOTE:
The figure shows an example of widely used engine stand (A)
that can hold mating surface of transmission with drive plate
removed.
CAUTION:
Before removing the hang ing chains, check the engine
stand is stable and there is no risk of overturning.
6. Drain engine oil. Refer to LU-8, "
Draining".
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Revision: 2010 May2011 QX56

ENGINE UNITEM-105
< UNIT DISASSEMBLY AND ASSEMBLY >
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ENGINE UNIT
DisassemblyINFOID:0000000006289580
1. Remove intake manifold. Refer to
EM-30, "Exploded View".
2. Remove exhaust manifold. Refer to EM-40, "
Exploded View".
3. Remove oil pan (lower). Refer to EM-54, "
Exploded View".
4. Remove ignition coil and spark plug. Refer to EM-23, "
Exploded View".
5. Remove rocker cover. Refer to EM-33, "
Exploded View".
6. Remove timing chain. Refer to EM-61, "
Exploded View".
7. Remove exhaust camshaft and VVEL ladder assembly. Refer to EM-74, "
Exploded View".
8. Remove cylinder head. Refer to EM-86, "
Exploded View".
AssemblyINFOID:0000000006289581
Assemble in the reverse order of disassembly.
Revision: 2010 May2011 QX56

COMPONENT PARTSEXL-9
< SYSTEM DESCRIPTION > [XENON TYPE]
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FRONT COMBINATION LAMP : HID control unitINFOID:0000000006213890
Headlamp (LO) circuit is connected to HID control unit integrated in the headlamp. Headlamp (LO) circuit turns
xenon headlamp ON.
For the details of HID control unit and the xenon headlamp, refer to EXL-8, "
FRONT COMBINATION LAMP :
Xenon Headlamp".
FRONT COMBINATION LAMP : High Beam SolenoidINFOID:0000000006213891
The high beam solenoid drives the mobile valve shade. And the mobile valve shade switches the high beam
and low beam of headlamp.
 When the headlamp high relay is turned ON, magnetic force is applied to the high beam solenoid (1) by a current. The mobile
valve shade (2) is switched to the high beam position.
 When the headlamp high relay is turned OFF, the current stops.
The mobile valve shade returns to the low beam position automati-
cally.
FRONT COMBINATION LAMP : Aiming MotorINFOID:0000000006213892
The headlamp levelizer adjusts the headlamp light axis upward and downward with the aiming motor inte-
grated in the front combination lamp.
FRONT COMBINATION LAMP : Swivel ActuatorINFOID:0000000006213893
SWIVEL ACTUATOR
The swivel actuator is installed in the headlamp unit. T he swivel actuator consists of the swivel motor and the
swivel position sensor.
SWIVEL MOTOR
 The swivel motor is the two-phase step motor.
 The swivel motor drives headlamp by exciting the two dr ive coils according to the drive signal from AFS con-
trol unit.
 The rotation direction of the swivel motor is changeable by changing the exciting pattern.
SWIVEL POSITION SENSOR
The swivel position sensor detects the headlamp swivel angle to transmit t he swivel position sensor signal to
AFS control unit.
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Revision: 2010 May2011 QX56

FSU-1
SUSPENSION
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SECTION FSU
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B
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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 for Procedure without Cowl Top Cover ......3
Precautions for Suspension ......................................3
PREPARATION ............................................4
PREPARATION .............................................. .....4
Special Service Tools .......................................... ......4
Commercial Service Tools ........................................4
SYMPTOM DIAGNOSIS ...............................5
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ........................ .....
5
NVH Troubleshooting Chart ................................ ......5
PERIODIC MAINTENANCE ..........................6
FRONT SUSPENSION ASSEMBLY .............. .....6
Inspection ............................................................ ......6
WHEEL ALIGNMENT ..........................................7
Inspection ............................................................ ......7
Adjustment ................................................................7
REMOVAL AND INSTALLATION ................9
FRONT COIL SPRING AND SHOCK AB-
SORBER ............................................................
9
Exploded View ..................................................... .....9
Removal and Installation .........................................10
Disassembly and Assembly .....................................11
Inspection and Adjustment ......................................12
Disposal ...................................................................13
LOWER LINK ....................................................14
Exploded View .........................................................14
Removal and Installation .........................................14
Inspection ................................................................15
UPPER LINK ......................... ............................17
Exploded View ..................................................... ....17
Removal and Installation .........................................17
Inspection ................................................................18
FRONT STABILIZER ........................................20
Exploded View .........................................................20
Removal and Installation .........................................20
Inspection ................................................................20
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .............................................
21
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
21
Wheel Alignment ................................................. ....21
Ball Joint ..................................................................21
Wheel Height ...........................................................21
Revision: 2010 May2011 QX56

FSU-4
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service ToolsINFOID:0000000006225636
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolsINFOID:0000000006225637
Tool number
(Kent-Moore No.)
Tool name Description
ST35652000
( − )
Shock absorber attachment Disassembling and assembling shock
absorber
ST3127S000
(J-25765-A)
Preload gauge Measuring rotating torque of ball joint
ZZA0807D
ZZA0806D
Tool name
Description
Power tool Loosening bolts and nuts
Spring compressor Removing and installing coil spring
PBIC0190E
S-NT717
Revision: 2010 May2011 QX56

FRONT COIL SPRING AND SHOCK ABSORBERFSU-9
< REMOVAL AND INSTALLATION >
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REMOVAL AND INSTALLATION
FRONT COIL SPRING AND SHOCK ABSORBER
Exploded ViewINFOID:0000000006225642
WITHOUT HBMC
WITH HBMC
1. Piston rod lock nut 2. Washer 3. Bushing
4. Shock absorber mounting bracket 5. Tube 6. Rubber seat
7. Bound bumper cover 8. Dust cover 9. Coil spring
10. Shock absorber 11. Lower link
Refer to GI-4, "
Components" for symbols in the figure.
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Revision: 2010 May2011 QX56

FSU-10
< REMOVAL AND INSTALLATION >
FRONT COIL SPRING AND SHOCK ABSORBER
CAUTION:
The shock absorber assembly cannot be disassembled.
Removal and InstallationINFOID:0000000006225643
REMOVAL
1. Reduce system pressure. (With HBMC) Refer to SCS-18, "Work Procedure".
CAUTION:
Inadvertent piping removal causes fluid to splatter.
2. Remove tires with power tool. Refer to WT-64, "
Removal and Installation".
3. Remove brake hose bracket from steering knuckle. Refer to BR-23, "
FRONT : Removal and Installation".
4. 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.
5. Remove disc rotor. Refer to FA X - 8 , "
Removal and Installation" (2WD), FAX-18, "Removal and Installation"
(4WD).
6. Remove wheel sensor and harness connector. Refer to BRC-134, "
FRONT WHEEL SENSOR : Removal
and Installation".
CAUTION:
Never pull on wheel sensor harness.
7. Remove steering outer socket fr om steering knuckle. Refer to ST-42, "
Removal and Installation".
8. Remove height sensor from upper link (right side). Refer to EXL-136, "
Removal and Installation".
9. Set suitable jack under lower link.
10. Remove stabilizer connecting rod from lower link. (Without HBMC) Refer to FSU-20, "
Removal and Instal-
lation".
11. Separate upper link from steering knuckle. Refer to FSU-17, "
Removal and Installation".
1. Shock absorber assembly 2. Lower link
Refer to GI-4, "
Components" for symbols in the figure.
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Revision: 2010 May2011 QX56

FRONT COIL SPRING AND SHOCK ABSORBERFSU-11
< REMOVAL AND INSTALLATION >
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12. Separate drive shaft from steering knuckle. (4WD) Refer to FAX-22, "Removal and Installation".
13. Remove front tube assembly A and front tube asse mbly B from shock absorber. (With HBMC) Refer to
SCS-32, "
FRONT TUBE ASSEMBLY : Removal and Installation".
14. Remove shock absorber.
15. Perform inspection after removal. (With HBMC) Refer to FSU-12, "
Inspection and Adjustment".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Never tap on the ball joint cap of the stabilizer connecting rod with a hammer or a similar item when inserting
the stabilizer connecting rod into the lower link. (Without HBMC)
 Perform final tightening of bolts and nuts at the shock absorber lower side (rubber bushing), under unladen
conditions with tires on level ground.
 Perform inspection after installation. Refer to FSU-12, "
Inspection and Adjustment".
 Perform adjustment after installation. (With HBMC) Refer to FSU-12, "
Inspection and Adjustment".
 After replacing the shock absorber, always follow the disposal procedure to discard the shock absorber.
Refer to FSU-13, "
Disposal".
Disassembly and AssemblyINFOID:0000000006273960
CAUTION:
The shock absorber assembly can not be disassembled. (With HBMC)
DISASSEMBLY (WITHOUT HBMC)
CAUTION:
Never damage shock absorber piston rod wh en removing components from shock absorber.
1. Install shock absorber attachment [SST: ST35652000 ( −)]
(A) to shock absorber and secure it in a vise.
CAUTION:
When installing the shock ab sorber attachment to shock
absorber, wrap a shop cloth around shock absorber to pro-
tect it from damage.
2. Using a spring compressor (commercial service tool) (A), com- press coil spring between rubber seat and shock absorber until
coil spring with a spring compressor is free.
CAUTION:
Be sure a spring compresso r is securely attached coil
spring. Compress coil spring
3. Check coil spring with a spring compressor between rubber seat and shock absorber is free. And then remove piston rod lock nut
while securing the piston rod tip so that piston rod does not turn.
4. Remove washer, bushings, shock absorber mounting bracket, tube, rubber seat, bound bumper cover, dust cover from shock
absorber.
5. After removing coil spring with a spring compressor, then gradually release a spring compressor. CAUTION:
Loosen while making sure coil spri ng attachment position does not move.
6. Remove the shock absorber at tachment from shock absorber.
7. Perform inspection after disassembly. Refer to FSU-12, "
Inspection and Adjustment".
ASSEMBLY (WITHOUT HBMC)
1. Install shock absorber attachment [SST: ST35652000 ( −)] to shock absorber and secure it in a vise.
CAUTION:
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Revision: 2010 May2011 QX56

FSU-12
< REMOVAL AND INSTALLATION >
FRONT COIL SPRING AND SHOCK ABSORBER
When installing the shock absorber attachment to shock absorber, wrap a shop cloth around
shock absorber to protect it from damage.
2. Compress coil spring using a spring compressor (commercial service tool), and install it onto shock absorber.
CAUTION:
 Be sure a spring compressor is securely attach ed to coil spring. Compress coil spring.
 Set coil spring so that its paint marks face downward.
3. Apply soapy water to dust cover. CAUTION:
Never use machine oil.
4. Install dust cover, bound bumper cover, rubber seat , bushings, tube, shock absorber mounting bracket,
and washer to shock absorber.
 Install the shock absorber mounting bracket (1) as shown in the figure.
 Check that the lower end of the coil spring (B) is positioned at the spring lower seat of the shock absorber.
5. Secure piston rod tip so that piston rod does not turn, then tighten piston rod lock nut to the specified torque.
6. Gradually release a spring compressor, and remove coil spring. CAUTION:
Loosen while making sure co il spring attachment position
does not move.
7. Remove the shock absorber attachment from shock absorber.
Inspection and AdjustmentINFOID:0000000006225644
INSPECTION AFTER REMOVAL (WITH HBMC)
Shock Absorber assembly
Check shock absorber assembly for oil leakage or other malfunctions. Replace it if necessary.
INSPECTION AFTER DISASSEMBLY (WITHOUT HBMC)
Shock Absorber
Check the following items, and replace the part if necessary.
 Shock absorber for deformation, cracks or damage.
 Piston rod for damage, uneven wear or distortion.
 Oil leakage.
Shock Absorber Mounting Bracket and Rubber Parts Inspection
Check shock absorber mounting bracket for cracks and rubber parts for wear. Replace it if necessary.
Coil Spring
Check coil spring for cracks, wear or damage. Replace it if necessary.
INSPECTION AFTER INSTALLATION
1. Check wheel sensor harness for proper connection. Refer to BRC-134, "FRONT WHEEL SENSOR :
Exploded View".
2. Check wheel alignment. Refer to FSU-7, "
Inspection".
Angle (a) : 90
°
A : Shock absorber mounting bracket bolt
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Revision: 2010 May2011 QX56