2005 INFINITI QX4 lock

EI-34
DOOR FINISHER
Revision: October 20052005 QX56
3. Remove cap from pull handle escutcheon and remove screw.
4. Remove pull handle escutcheon.

Remove screws behind pull handle escutcheon.
5. Remove armrest.

Remove screws behind armrest.
6. Remove step lamp.

Disconnect harness connector.
7. Remove door finisher and disconnect lock cable and handle cable from inside door handle assembly.
Refer to BL-134, "
REAR DOOR LOCK" .
8. Remove door lock knob.
9. Remove rear door tweeter. Refer to AV-46, "
Removal and Installation of Rear Door Tweeter" .
Installation is in the reverse order of removal.

LUGGAGE FLOOR TRIM
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REMOVAL
1. Remove 2nd and 3rd row seat belts. Refer to SB-3, "SEAT BELTS" .
2. Remove third row seat belt buckles.
3. Remove third row seat assembly. Refer to SE-104, "
Third Row" .
4. Remove back door weatherstrip. Refer to EI-42, "
BACK DOOR TRIM" .
5. Remove rear luggage room lamp. Refer to EI-38, "
HEADLINING" .

Disconnect harness from lamp.
6. Remove rear upper finisher. Refer to EI-38, "
HEADLINING" .
7. Remove rear door kicking plates. Refer to EI-35, "
BODY SIDE TRIM" .
8. Remove rear lower finisher.
9. Disconnect door open/close link. Refer to BL-135, "
BACK DOOR LOCK" .
10. Remove cargo net hooks.
11. Remove luggage side lower finishers LH/RH.

Disconnect power point, RH side.
12. Remove coat hooks.
13. Remove luggage side upper finishers LH/RH.

Disconnect harness to door open/close switch, LH side.
14. Remove tie down hooks LH/RH.
15. Remove floor side finishers LH/RH.
16. Remove luggage floor board.
17. Remove storage box.
18. Remove front luggage floor bracket.
19. Remove rear luggage box bracket.
INSTALLATION
Installation is in the reverse order of removal.
1. Rear lower finisher cap 2. Rear lower finisher 3. Cap upper seat belt finisher RH
4. Luggage side finisher RH 5. Metal clip 6. Plastic clip
7. Luggage side finisher lower RH 8. Luggage floor board 9. Latch luggage floor board
10. Leak check cap 11. Cup holder 12. Tie down hook
13. Floor side finisher RH 14. Power point assembly 15. Cargo net hook
16. Rear luggage box bracket 17. Front luggage floor bracket 18. Storage box
19. Floor side finisher LH 20. Luggage side finisher upper LH 21. Luggage side finisher lower LH
22. Lid luggage side lower 23. Coat hook 24. Cap lower seat belt finisher
25. Back door open/close switch 26. Cap luggage side upper 27. Cap upper seat belt finisher LH

EI-42
BACK DOOR TRIM
Revision: October 20052005 QX56
BACK DOOR TRIMPFP:90900
Removal and InstallationEIS004WV
1. Disconnect door open/close link. Refer to BL-135, "BACK DOOR LOCK" .
2. Open back door glass.
3. Remove inside weatherstrip around back door glass.
4. Remove assist handle.
5. Release clips and remove back door lower finisher.
6. Release clips and remove back door upper finisher.
7. Release clips and remove back door side finishers LH and RH.
Installation is in the reverse order of removal.
1. Back door upper finisher 2. Back door glass weatherstrip 3. Back door side finisher RH
4. Back door lower finisher 5. Back door bumper 6. Back door pull handle
7. Back door mask 8. Back door side finisher LH
WIIA0224E

EM-2Revision: October 20052005 QX56 CAMSHAFT ............................................................... 43
Removal and Installation ........................................ 43
REMOVAL ........................................................... 43
INSPECTION AFTER REMOVAL ........................ 46
INSTALLATION .................................................... 48
Valve Clearance ...................................................... 51
INSPECTION ....................................................... 51
ADJUSTMENT .................................................... 53
OIL SEAL .................................................................. 55
Removal and Installation of Valve Oil Seal ............. 55
REMOVAL ........................................................... 55
INSTALLATION .................................................... 55
Removal and Installation of Front Oil Seal ............. 56
REMOVAL ........................................................... 56
INSTALLATION .................................................... 56
Removal and Installation of Rear Oil Seal .............. 56
REMOVAL ........................................................... 56
INSTALLATION .................................................... 57
CYLINDER HEAD ..................................................... 58
On-Vehicle Service ................................................. 58
CHECKING COMPRESSION PRESSURE ......... 58
Removal and Installation ........................................ 59
REMOVAL ........................................................... 59
INSPECTION AFTER REMOVAL ........................ 60
INSTALLATION .................................................... 60
Disassembly and Assembly .................................... 61
DISASSEMBLY ................................................... 61
ASSEMBLY ......................................................... 62
Inspection After Disassembly ................................. 63
CYLINDER HEAD DISTORTION ........................ 63
VALVE DIMENSIONS .......................................... 64
VALVE GUIDE CLEARANCE .............................. 65
VALVE GUIDE REPLACEMENT ......................... 65
VALVE SEAT CONTACT ..................................... 67
VALVE SEAT REPLACEMENT ........................... 67
VALVE SPRING SQUARENESS ......................... 68
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD ............................... 68
ENGINE ASSEMBLY ................................................ 69
Removal and Installation ........................................ 69
REMOVAL ........................................................... 69
INSTALLATION .................................................... 72
INSPECTION AFTER INSTALLATION ................ 72
CYLINDER BLOCK ................................................... 73
Disassembly and Assembly .................................... 73
DISASSEMBLY ................................................... 74ASSEMBLY ..........................................................77
How to Select Piston and Bearing ..........................82
DESCRIPTION ....................................................82
HOW TO SELECT PISTON .................................83
HOW TO SELECT CONNECTING ROD BEAR-
ING .......................................................................84
HOW TO SELECT MAIN BEARING ....................85
Inspection After Disassembly ..................................89
CRANKSHAFT END PLAY ..................................89
CONNECTING ROD SIDE CLEARANCE ...........89
PISTON AND PISTON PIN CLEARANCE ...........89
PISTON RING SIDE CLEARANCE .....................90
PISTON RING END GAP ....................................90
CONNECTING ROD BEND AND TORSION .......91
CONNECTING ROD BEARING (BIG END) ........91
CONNECTING ROD BUSHING OIL CLEAR-
ANCE (SMALL END) ...........................................91
CYLINDER BLOCK DISTORTION ......................92
MAIN BEARING HOUSING INSIDE DIAMETER ...93
PISTON TO CYLINDER BORE CLEARANCE ....93
CRANKSHAFT JOURNAL DIAMETER ...............94
CRANKSHAFT PIN DIAMETER ..........................95
OUT-OF-ROUND AND TAPER OF CRANK-
SHAFT .................................................................95
CRANKSHAFT RUNOUT ....................................95
CONNECTING ROD BEARING OIL CLEAR-
ANCE ...................................................................95
MAIN BEARING OIL CLEARANCE .....................96
CRUSH HEIGHT OF MAIN BEARING ................97
CRUSH HEIGHT OF CONNECTING ROD
BEARING .............................................................97
MAIN BEARING CAP BOLT DIAMETER .............97
CONNECTING ROD BOLT DIAMETER ..............98
SERVICE DATA AND SPECIFICATIONS (SDS) ......99
Standard and Limit ..................................................99
GENERAL SPECIFICATIONS .............................99
DRIVE BELTS ......................................................99
EXHAUST MANIFOLD ........................................99
CAMSHAFT AND CAMSHAFT BEARING ......... 100
CYLINDER HEAD .............................................. 102
CYLINDER BLOCK ............................................ 104
PISTON, PISTON RING AND PISTON PIN ...... 105
CONNECTING ROD .......................................... 105
CRANKSHAFT ................................................... 106
MAIN BEARING ................................................. 107

PRECAUTIONS
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PRECAUTIONSPFP:00001
Precautions for Drain Engine CoolantEBS00LLK
Drain engine coolant when engine is cooled.
Precautions for Disconnecting Fuel PipingEBS00LLL

Before starting work, make sure no fire or spark producing items are in the work area.

Release fuel pressure before disconnecting and disassembly.

After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyEBS00LLM

When instructed to use special service tools, use the specified tools. Always be careful to work safely,
avoid forceful or uninstructed operations.

Exercise maximum care to avoid damage to mating or sliding surfaces.

Cover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials.

Mark and arrange disassembly parts in an organized way for easy troubleshooting and assembly.

When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be
used where noted in the step.
Precautions for Inspection, Repair and ReplacementEBS00LLN
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precautions for Assembly and InstallationEBS00LLO

Use torque wrench to tighten bolts or nuts to specification.

When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is speci-
fied, do exactly as specified.

Replace with new gasket, packing, oil seal or O-ring.

Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for
any restriction and blockage.

Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.

Release air within route when refilling after draining engine coolant.

Before starting engine, apply fuel pressure to fuel lines with turning ignition switch ON (with engine
stopped). Then make sure that there are no leaks at fuel line connections.

After repairing, start engine and increase engine speed to check engine coolant, fuel, oil, and exhaust
systems for leakage.
Parts Requiring Angular TighteningEBS00LLP

For final tightening of the following engine parts use Tool:
–Cylinder head bolts
–Main bearing cap bolts
–Connecting rod cap bolts
–Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angle
tightening)

Do not use a torque value for final tightening.

The torque value for these parts are for a preliminary step.

Ensure thread and seat surfaces are clean and lightly coated with engine oil. Tool number : KV10112100 (BT-8653-A)

EM-10Revision: October 2005
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
2005 QX56
Use the Chart Below to Help You Find the Cause of the Symptom.EBS00LLU
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not relatedLocation of
noiseType of
noiseOperating condition of engine
Source of
noiseCheck itemRefer-
ence page Before
warm-
upAfter
warm-
upWhen
start-
ingWhen
idlingWhen
racingWhile
driv-
ing
To p o f
engine
Rocker
cover
Cylinder
headTicking or
clickingC A — A B — Tappet noise Valve clearanceEM-51
Rattle C A — A B CCamshaft
bearing noiseCamshaft journal clear-
ance
Camshaft runoutEM-46EM-46
Crankshaft
pulley
Cylinder
block (Side
of engine)
Oil panSlap or
knock—A—B B—Piston pin
noisePiston and piston pin
clearance
Connecting rod bush-
ing clearanceEM-90
EM-92
Slap or
rapA——BBAPiston slap
noisePiston-to-bore clear-
ance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsionEM-94EM-90
EM-90
EM-91
Knock ABCBBBConnecting
rod bearing
noiseConnecting rod bush-
ing oil clearance (Small
end)
Connecting rod bear-
ing clearance (Big end)EM-92EM-91
Knock A B — A B CMain bearing
noiseMain bearing oil clear-
ance
Crankshaft runoutEM-96EM-95
Front of
engine
Chain case
cover
Front coverTa p p i n g
or tickingAA—BBBTiming chain
and chain
tensioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operationEM-38
EM-35
Front of
engineSqueak-
ing or
fizzingAB—B—CDrive belts
(Sticking or
slipping)Drive belts deflection
EM-12
CreakingABABABDrive belts
(Slipping)Idler pulley bearing
operation
Squall
CreakingAB—BABWater pum p
noiseWater pump operationCO-17,
"INSPEC-
TION
AFTER
REMOVA
L"

DRIVE BELTS
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INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Make sure belt is securely installed around all pulleys.

Rotate the crankshaft pulley several turns clockwise to equalize belt tension between pulleys.

Make sure belt tension is within the allowable working range, using indicator notch on the auto tensioner.
Refer to EM-12, "
Checking Drive Belts" .
Drive Belt Auto Tensioner and Idler PulleyEBS00LLZ
REMOVAL
1. Remove the air duct and resonator assembly. Refer to EM-14 .
2. Remove the drive belt. Refer to EM-12, "
Checking Drive Belts" .
3. Remove the auto tensioner and idler pulley using power tool.
INSTALLATION
Installation is in the reverse order of removal.
WBIA0607E
1. Auto tensioner 2. Idler pulley

OIL PAN AND OIL STRAINER
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Revision: October 20052005 QX56
b. Remove the oil pan (lower) using Tool.
CAUTION:
Do not damage mating surface.
3. Remove the oil strainer from the oil pan (upper).
4. Remove the oil pan (upper) using the following steps.
a. Remove the oil pan (upper) bolts in reverse order shown.
b. Remove the oil pan (upper) from the cylinder block by prying it at
the points shown, using suitable tool.
CAUTION:
Do not damage mating surface.
5. Remove the O-rings from the oil pump and front cover.
NOTE:
Do not reuse O-rings.
INSPECTION AFTER REMOVAL
Clean the oil strainer.Tool number : KV10111100 (J-37228)
WBIA0566E
KBIA2467E
KBIA2468E
KBIA2469E