radiator INFINITI QX56 2011 Factory Owner's Manual

WATER PUMPCO-19
< REMOVAL AND INSTALLATION >
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11. Remove water pump. Refer to
CO-18, "Exploded View".
 Engine coolant will leak from cylinder block, so have a receptacle ready under vehicle.
CAUTION:
 Handle the water pump vane so that it does not contact any other parts.
 Never disassemble water pump.
INSTALLATION
Install in the reverse order of removal.
InspectionINFOID:0000000006289671
INSPECTION AFTER REMOVAL
 Visually check that there is no significant dirt or rusting on water pump body and vane (A).
 Check there is no slack in vane shaft, and that it turns smoothly when rotated by hand.
 If anything is found, replace water pump.
INSPECTION AFTER INSTALLATION
 Check that the reservoir tank cap is tightened.
 Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the
radiator cap tester (commercial service tool). Refer to CO-8, "
Inspection".
 Start and warm up the engine. Visually check that there is no leakage of engine coolant.
JPBIA2315ZZ
Revision: 2010 May2011 QX56

CO-20
< REMOVAL AND INSTALLATION >
WATER INLET AND THERMOSTAT ASSEMBLY
WATER INLET AND THERMOSTAT ASSEMBLY
Exploded ViewINFOID:0000000006289672
Removal and InstallationINFOID:0000000006289673
REMOVAL
1. Remove engine cover. Refer to EM-25, "Exploded View".
1. Water inlet 2. Clamp 3. Water suction hose
4. Water suction pipe 5. Hose connector 6. Clamp
7. Water hose 8. Gasket 9. Water pipe
10. Heater pipe 11. O-ring 12. Water connector
13. Pakkin 14. O-ring 15. Thermostat housing
16. Clamp 17. Water hose 18. Pakkin
19. Clamp 20. Water hose 21. Thermostat
22. Water hose 23. Pakkin 24. Clamp
A. To electric throttle control actuator B. To o il cooler C. To electric throttle control actuator
D. To radiator E. To reservoir tank F. To radiator
G To heater H. To heater
Refer to GI-4, "
Components" for symbols in the figure.
JPBIA3283GB
Revision: 2010 May2011 QX56

WATER INLET AND THERMOSTAT ASSEMBLYCO-21
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2. Remove front under cover with power tool. Refer to
EXT-25, "Exploded View".
3. Drain engine coolant from drain plugs on radiator and cylinder block. Refer to CO-8, "
Draining" and EM-
103, "Setting".
CAUTION:
 Perform this step when engine is cold.
 Never spill engine coolant on drive belts.
4. Disconnect radiator hose (upper and lower). Refer to CO-13, "
Exploded View".
5. Remove intake manifold. Refer to EM-30, "
Exploded View".
6. Remove fuel feed tube. Refer to EM-43, "
Exploded View".
7. Remove water hose, water connector, heater pipes and heater hoses.
8. Remove thermostat housing.
9. Remove water inlet and thermostat.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Be careful not to spill engine coolant over en gine room. Use rag to absorb engine coolant.
Thermostat
 Install thermostat with the whole circumference of each flange part
(A) fit securely inside rubber ring (1).
 Install thermostat with jiggle valve (A) facing upwards. The position deviation may be within the range of 20 degrees (b).
Water Connector and Heater Pipe
 First apply a neutral detergent to O-rings, then quickly in sert the insertion parts of the water connector and
heater pipe into the installation holes.
InspectionINFOID:0000000006289674
INSPECTION AFTER REMOVAL
 Check that valve in thermostat is co mpletely closing at normal temperature.
PBIC3315J
JPBIA2314ZZ
Revision: 2010 May2011 QX56

CO-22
< REMOVAL AND INSTALLATION >
WATER INLET AND THERMOSTAT ASSEMBLY
 Place a thread (A) so that it is caught in the valve of the thermostat.Immerse fully in a container filled with water. Heat while stirring.
 The valve opening temperature is the temperature at which the
valve opens and falls from the thread.
 After checking the maximum valve lift, lower the water temperature and check the valve closing temperature.
 If the malfunctioning condition, when valve seating at ordinary room temperature, or measured values are out of the standard,
replace thermostat.
INSPECTION AFTER INSTALLATION
 Check that the reservoir tank cap is tightened.
 Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the
radiator cap tester (commercial service tool). Refer to CO-8, "
Inspection".
 Start and warm up the engine. Visually chec k that there is no leakage of engine coolant.
Thermostat (Standard) : Refer to
CO-23, "
Thermostat".
JPBIA2313ZZ
Revision: 2010 May2011 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)
CO-23
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Periodical Maintenance SpecificationINFOID:0000000006289675
ENGINE COOLANT CAPACITY (APPROXIMATELY)
Unit: (US qt, Imp qt)
RadiatorINFOID:0000000006289676
Unit: kPa (kg/cm2, psi)
ThermostatINFOID:0000000006289677
Engine coolant capacity [With reservoir tank (“MAX” level)] 14.9 (15-6/8, 13-1/8)
Reservoir tank engine coolant capacity (At “MAX” level) 1.0 (1, 7/8)
Reservoir tank cap relief pressure
Standard 108.2 - 127.8 ( 1.1 - 1.3, 15.7 - 18.5)
Limit 98 (1.0, 14)
Leakage testing pressure 186 (1.9, 27)
ThermostatStandard
Valve opening temperature 82 °C (180 °F)
Maximum valve lift 10.0 mm/95 °C (0.394 in/203 °F)
Valve closing temperature 77 °C (171 °F)
Revision: 2010 May2011 QX56

DLK-6
HAZARD WARNING LAMP : Diagnosis Proce-
dure .......................................................................
204
AUTOMATIC BACK DOOR FUNCTIONS DO
NOT CANCEL ................................................. .
206
Diagnosis Procedure ........................................... ..206
AUTOMATIC BACK DOOR ANTI-PINCH
FUNCTION DOES NOT OPERATE .................
207
Diagnosis Procedure ........................................... ..207
INTEGRATED HOMELINK TRANSMITTER
DOES NOT OPERATE ....................................
208
Diagnosis Procedure ........................................... ..208
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES .............................................................
209
Work Flow ............................................................ ..209
Inspection Procedure .............................................211
Diagnostic Worksheet ............................................213
REMOVAL AND INSTALLATION ..............215
HOOD .............................................................. .215
Exploded View ..................................................... ..215
HOOD ASSEMBLY ................................................ ..215
HOOD ASSEMBLY : Removal and Installation .....215
HOOD ASSEMBLY : Adjustme nt ........................ ..216
HOOD HINGE ......................................................... ..218
HOOD HINGE : Removal and Installation .............218
HOOD STAY .......................................................... ..218
HOOD STAY : Removal and Installation ...............218
HOOD STAY : Disposal .........................................218
RADIATOR CORE SUPPORT .........................220
Exploded View ..................................................... ..220
Removal and Installation .......................................220
FRONT FENDER .............................................222
Exploded View ..................................................... ..222
FRONT FENDER .................................................... ..222
FRONT FENDER : Removal and Installation ........222
FRONT FENDER DRIP COVER ............................ ..223
FRONT FENDER DRIP COVER : Removal and
Installation .............................................................
223
FRONT FENDER DUCT ......................................... ..223
FRONT FENDER DUCT : Removal and Installa-
tion .........................................................................
223
FRONT DOOR .................................................224
Exploded View ..................................................... ..224
DOOR ASSEMBLY ................................................ ..224
DOOR ASSEMBLY : Removal and Installation .....224
DOOR ASSEMBLY : Adjustme nt ........................ ..225
DOOR STRIKER .................................................... ..226
DOOR STRIKER : Removal and Installation ........226
DOOR HINGE ......................................................... .226
DOOR HINGE : Removal and Installation ............226
DOOR CHECK LINK .............................................. .226
DOOR CHECK LINK : Removal and Installation ..226
REAR DOOR ....................................................228
Exploded View ..................................................... .228
DOOR ASSEMBLY .................................................228
DOOR ASSEMBLY : Removal and Installation ....228
DOOR ASSEMBLY : Adjustme nt ..........................229
DOOR STRIKER .................................................... .230
DOOR STRIKER : Removal and Installation ........230
DOOR HINGE ......................................................... .230
DOOR HINGE : Removal and Installation ............230
DOOR CHECK LINK .............................................. .230
DOOR CHECK LINK : Removal and Installation ..230
BACK DOOR .................................................. ..232
Exploded View ..................................................... .232
BACK DOOR ASSEMBLY ......................................232
BACK DOOR ASSEMBLY : Removal and Installa-
tion ....................................................................... .
232
BACK DOOR ASSEMBLY : Adjustment ...............234
BACK DOOR STRIKER ......................................... .235
BACK DOOR STRIKER : Removal and Installa-
tion ........................................................................
235
BACK DOOR HINGE ............................................. .236
BACK DOOR HINGE : Removal and Installation ..236
BACK DOOR STAY ............................................... .236
BACK DOOR STAY : Removal and Installation ....236
BACK DOOR STAY : Disposal ............................ .237
BACK DOOR WEATHER-STRIP ........................... .237
BACK DOOR WEATHER-STRIP : Removal and
Installation .............................................................
237
HOOD LOCK ....................................................238
Exploded View ..................................................... .238
Removal and Installation .......................................238
Inspection ..............................................................239
FRONT DOOR LOCK .......................................240
Exploded View ..................................................... .240
DOOR LOCK .......................................................... .240
DOOR LOCK : Removal and Installation ..............240
INSIDE HANDLE .................................................... .241
INSIDE HANDLE : Removal and Installation ........241
OUTSIDE HANDLE ................................................ .241
OUTSIDE HANDLE : Removal and Installation ....241
REAR DOOR LOCK .........................................243
Revision: 2010 May2011 QX56

DLK-212
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area c an often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it is important to note t he position the seat is in and the load placed on the seat
when the noise is present. These conditions should be duplicated when verifying and isolating the cause of
the noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. Rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of thes e incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the \
vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.
Revision: 2010 May2011 QX56

HOOD
DLK-215
< REMOVAL AND INSTALLATION >
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REMOVAL AND INSTALLATION
HOOD
Exploded ViewINFOID:0000000006226062
HOOD ASSEMBLY
HOOD ASSEMBLY : Removal and InstallationINFOID:0000000006226063
CAUTION:
 Operate with two workers, because of its heavy weight.
 Use protective tape or shop cloth to protect from damage during removal and installation.
REMOVAL
1. Support hood assembly with the proper material to prevent it from falling.
WARNING:
Bodily injury may occur if no proper material is holding hood open when removing hood stay.
1. Hood assembly 2. Hood front seal 3. Radiator core seal
4. Hood insulator 5. Hood side bumper 6. Clip
7. Hood stay 8. Stud ball 9. Hood bumper rubber
10. Hood hinge
: Clip
Refer to GI-4, "
Components" for symbols in the figure.
JMKIA5477GB
Revision: 2010 May2011 QX56

DLK-220
< REMOVAL AND INSTALLATION >
RADIATOR CORE SUPPORT
RADIATOR CORE SUPPORT
Exploded ViewINFOID:0000000006226068
Removal and InstallationINFOID:0000000006226069
RADIATOR CORE SUPPORT UPPER
Removal
CAUTION:
When removing radiator core support upper, be careful not to damage the painted surface.
1. Remove bumper molding, bumper molding stay LH and RH. Refer to EXT-13, "
Removal and Installation".
2. Remove fixing clips, and then radiator upper seal.
3. Remove horn (LOW and HIGH). Refer to HRN-6, "
Removal and Installation".
4. Remove exhaust gas / outside oder sensor. Refer to HAC-151, "
Removal and Installation".
5. Disconnect refrigerant pressu re sensor harness connector.
1. Radiator upper seal 2. Radiator core support upper 3. Air guide seal LH
4. Air guide seal RH 5. Radiator side seal RH 6. Radiator lower seal RH
7. Radiator lower seal LH 8. Radiator side seal LH 9. Radiator core support main
Refer to for symbols in the figure.GI-4, "
Components"
JMKIA5479GB
Revision: 2010 May2011 QX56

RADIATOR CORE SUPPORTDLK-221
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6. Disconnect all harness clips.
7. Remove hood lock assembly. Refer to DLK-238, "
Removal and Installation".
8. Remove fixing clips of air guide seal.
9. Remove mounting bolts, and then remove power steering oil cooler. Refer to ST-54, "
Exploded View".
CAUTION:
Put a wooden block (A) under the oil cooler (1) to prevent
the oil cooler from falling.
10. Remove radiator mounting bolts. Refer to CO-13, "
Removal and Installation".
11. Remove mounting bolts, and then radiator core support upper.
Installation
Note the following items, and then install in the reverse order of removal.
CAUTION:
 If aluminum plate remains to the body side when removing radiator core support upper, be sure to
pinch aluminum plate between radiator core support upper and hoodledge upper when installing
radiator core support upper, for preventing electric corrosion.
 When installing radiator core support upper, be careful not to damage the painted surface.
RADIATOR CORE SUPPORT LOWER
Removal
1. Remove front bumper fascia, bumper retainer and Bumper retainer bracket CTR. Refer to EXT-13,
"Removal and Installation".
2. Remove fixing clips, and then air guide seal and radiator side seal.
3. Remove ambient sensor. Refer to HAC-147, "
Removal and Installation".
4. Remove crash zone sensor. Refer to SR-22, "
Removal and Installation".
5. Remove all harness clips.
6. Remove mounting bolts, and then remove radiator core support main.
Installation
Install in the reverse order of removal.
JMKIA5480ZZ
Revision: 2010 May2011 QX56