2008 INFINITI QX56 coolant

EM-86
< DISASSEMBLY AND ASSEMBLY >
ENGINE UNIT
ASSEMBLY
1. Fully air-blow the coolant and oil passages in the cylinder block, cylinder bore, and crankcase to removeany foreign material.
CAUTION:
Use goggles to protect your eyes.
2. Install each plug to the cylinder block (only screw-type plugs are shown).
• Apply liquid gasket. Use Genuine Thread Sealant or equivalent. Refer to GI-15,
"Recommended Chemical Products and Sealants".
• Replace copper washers with new ones.
• Tighten each plug as specified below.
3. Install main bearings and thrust bearings.
a. Remove any dust, dirt, and oil on the bearing mating surfaces of the cylinder block and main bearing caps.
b. Install thrust bearings to both sides of the No. 3 journal housing on the cylinder block and main bearing caps
• Install thrust bearings with the oil groove facing the crankshaft
arm (outside).
• Install thrust bearings with a protrusion in the center on the
main bearing caps.
c. Install main bearings paying attention to the direction. • Install the one with oil holes onto the cylinder block and theone without oil holes onto the main bearing cap.
• Before installing bearings, apply engine oil to bearing surface
(inside). Do not apply oil to the back surface, but thoroughly
clean it.
• When installing, align the bearing stopper to the notch.
• Ensure the oil holes on the cylinder block and those on the
corresponding bearing are aligned.
4. Install pilot converter to the crankshaft using suitable tool.
5. Install crankshaft to the cylinder block. • While turning crankshaft by hand, make sure it turns smoothly.
Part Washer Tightening torque
A Yes 53.9 N·m (5.5 kg-m, 40 ft-lb)
B No 19.6 N·m (2.0 kg-m, 15 ft-lb)
C Yes 62.7 N·m (6.4 kg-m, 46 ft-lb)
D Yes 62.7 N·m (6.4 kg-m, 46 ft-lb)
WBIA0419E
PBIC0093E
PBIC0094E
EMP0569D
Revision: March 2010 2008 QX56

EM-94
< DISASSEMBLY AND ASSEMBLY >
ENGINE UNIT
• Measure diameter of piston pin using suitable tool.
Connecting Rod Bushing Oil Clearance (Small End)
(Connecting rod small end oil clearance) = (Inside diameter of con-
necting rod small end) – (Piston pin diameter)
• If measured value exceeds the standard, replace the connectingrod assembly and/or piston and piston pin assembly.
• If replacing the piston and piston pin assembly, use the Table for
Selective Fitting for Piston to select the piston corresponding to the
applicable bore grade of the cylinder block to be used. Refer to
EM-101, "
How to Select Piston and Bearing".
Factory installed parts grading:
• Only grade 0 is available.
Unit: mm (in)
CYLINDER BLOCK DISTORTION
• Remove any oil, scale, gasket, sealant and carbon deposits from the cylinder block surface.
CAUTION:
Do not allow any debris to en ter the oil or coolant passages.
• Measure block upper face for distortion in six directions as shown.
• If measurement exceeds the limit, replace cylinder block.
MAIN BEARING HOUSING INSIDE DIAMETER
Standard : 21.989 - 21.995 mm (0.8657 - 0.8659 in)
PBIC0117E
Standard : 0.005 - 0.017 mm (0.0002 - 0.0007 in)
KBIA2536E
Grade 0
Connecting rod bushing inside diameter 22.000 - 22.006
(0.8661 - 0.8664)
Piston pin diameter 21.989 - 21.995
(0.8657 - 0.8659)
Piston pin hole diameter 21.993 - 21.999
(0.8659 - 0.8661)
KBIA2496E
Standard : 0.03 mm (0.0012 in)
Limit : 0.1 mm (0.004 in)
SEM123C
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PRECAUTIONSEX-3
< PRECAUTION >
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5. When the repair work is completed, return the ignition switch to the
″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of al l control units using CONSULT-III.
Precaution for Liquid GasketINFOID:0000000001538868
REMOVAL OF LIQUID GASKET SEALING
• After removing the bolts and nuts, separate the mating surface and
remove the old liquid gasket sealing using Tool.
CAUTION:
Do not damage the mating surfaces.
• Tap the seal cutter to insert it (1).
• In areas where the Tool is difficult to use, lightly tap to slide it (2).
LIQUID GASKET APPLICATION PROCEDURE
1. Remove the old liquid gasket adhering to the gasket application surface and the mating surface using suitable tool.
• Remove the liquid gasket completely from the groove of the
liquid gasket application surface, bolts, and bolt holes.
2. Thoroughly clean the mating surfaces and remove adhering moisture, grease and foreign material.
3. Attach the liquid gasket tube to the Tool. Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-15, "
Recommended Chemical Products and Sealants".
4. Apply the liquid gasket without breaks to the specified location with the specified dimensions.
• If there is a groove for the liquid gasket application, apply theliquid gasket to the groove.
• As for the bolt holes, normally apply the liquid gasket inside
the holes. If specified in the procedure, it should also be
applied outside the holes.
• Within five minutes of liquid gasket application, install the mat-
ing component.
• If the liquid gasket protrudes, wipe it off immediately.
• Do not retighten after the installation.
• Wait 30 minutes or more after installation before refilling the engine with engine oil and engine coolant.
CAUTION:
If there are specific instructions in this manual, observe them.
Tool number : KV10111100 (J-37228)
WBIA0566E
PBIC0003E
Tool number : WS39930000 ( — )
WBIA0567E
SEM159F
Revision: March 2010
2008 QX56

EXL-110
< ON-VEHICLE REPAIR >
ADJUSTMENT AND INSPECTION
ON-VEHICLE REPAIR
ADJUSTMENT AND INSPECTION
HEADLAMP
HEADLAMP : Aiming AdjustmentINFOID:0000000001547282
NOTE:
• For details, refer to the regulations in your area.
• If vehicle front body has been repaired and /or the headlamp assembly has been replaced, check headlamp
aiming.
HEADLAMP AIMING
NOTE:
• Before performing aiming adjustment, check the following:
- Ensure all tires are inflated to correct pressure.
- Place vehicle and screen on level surface.
- Ensure there is no load in vehicle other than the driver (or equivalent weight placed in driver's position).
Coolant and engine oil filled to correct level, and fuel tank full.
- Confirm spare tire, jack and tools are properly stowed.
- Aim each headlamp individually and ensure other headlamp beam pattern is blocked from screen.
- Use adjusting screw to perform aiming adjustment
WKIA1859E
Revision: March 2010 2008 QX56

EXL-112
< ON-VEHICLE REPAIR >
ADJUSTMENT AND INSPECTION
• See that vehicle is unloaded (except for full levels of coolant,engine oil and fuel, and spare tire, jack, and tools). Have the driver
or equivalent weight placed in driver seat.
Adjust aiming in the vertical direction by turning the adjustment
screw.
NOTE:
Access adjustment screw from underneath front bumper. Turn screw
clockwise to raise pattern and counterclockwise to lower pattern.
1. Set the distance between the screen and the center of the fog lamp lens as shown.
2. Turn front fog lamps ON.
3. Adjust front fog lamps using adjusting screw so that the top edge of the high intensity zone is 200 mm (7.9 in) below the height of
the fog lamp centers as shown.
• When performing adjustment, if necessary, cover the head-lamps and opposite fog lamp.
SEL350X
MEL327G
MEL328GA
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PRECAUTIONSFSU-3
< PRECAUTION >
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5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of al l control units using CONSULT-III.
PrecautionINFOID:0000000001534617
• When installing the rubber bushings, the final tightening must be done under unladen condition and with the
tires on level ground. Oil will shorten the life of the rubber bushings, so wipe off any spilled oil immediately.
• Unladen condition means the fuel tank, engine coolant and lubricants are at the full specification. The spare
tire, jack, hand tools, and mats are in their designated positions.
• After installing suspension components, check the wheel alignment.
• Lock nuts are not reusable. Always use new lock nuts for installation. New lock nuts are pre-oiled, do not
apply any additional lubrication.
Revision: March 2010 2008 QX56

ON-VEHICLE SERVICEFSU-7
< ON-VEHICLE MAINTENANCE >
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ON-VEHICLE MAINTENANCE
ON-VEHICLE SERVICE
Front Suspension PartsINFOID:0000000001534627
Check front suspension parts for excessive play, cracks, wear and
other damage.
• Shake each front wheel to check for excessive play. If looseness is noted, inspect wheel bearing end play, then check
ball joint end play. Refer to FA X - 6 , "
On-Vehicle Inspection and Ser-
vice" and FSU-7, "Front Suspension Parts".
• Make sure that the cotter pin is inserted (4WD only).
• Retighten all nuts and bolts to the specified torque.
• Check shock absorber for oil leakage and other damage.
• Check suspension ball joint for grease leakage and ball joint dust cover for cracks and other damage.
Front Wheel AlignmentINFOID:0000000004915023
PRELIMINARY INSPECTION
WARNING:
Always adjust the alignment with the vehicle on a flat surface.
NOTE:
If alignment is out of specificat ion, inspect and replace any damaged or worn suspension parts before making
any adjustments.
1. Check and adjust the wheel alignment with the vehicle under unladen conditions. “Unladen conditions”
means that the fuel, coolant, and lubricant are full; and that the spare tire, jack, hand tools and mats are in
their designated positions.
2. Check the tires for incorrect air pressure and excessive wear.
3. Check the wheels for run out and damage. Refer to WT-45, "
Inspection".
4. Check the wheel bearing axial end play. Refer to FAX-6, "
On-Vehicle Inspection and Service" .
5. Check the shock absorbers for leaks or damage.
6. Check each mounting point of the suspension components for any excessive looseness or damage.
7. Check each link, arm, and the rear suspension member for any damage.
8. Check the vehicle height. Refer to FSU-25, "
Wheelarch Height (Unladen*1)" .
GENERAL INFORMATION AND RECOMMENDATIONS
1. A Four-Wheel Thrust Alignment should be performed.
• This type of alignment is re commended for any NISSAN vehicle.
• The four-wheel “thrust” process helps ensure that the vehicle is properly aligned and the steering wheel
is centered.
• The alignment machine itself should be ca pable of accepting any NISSAN vehicle.
• The alignment machine should be checked to ensure that it is level.
2. Make sure the alignment machine is properly calibrated. Suspension component torques : Refer to
FSU-14,
"Component" . SMA525A
SFA392B
Revision: March 2010 2008 QX56

FSU-24
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000001534621
Spring Free HeightINFOID:0000000001534622
Wheel Alignment (Unladen*1)INFOID:0000000001534623
*1: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions.Suspension type
Independent double wishbone coil over shock
Shock absorber type Double-acting hydraulic
Stabilizer Standard equipment
2WD325.5 ± 3 mm (12.8 ± 0.1 in)
4WD 335.0 ± 3 mm (13.2 ± 0.1 in)
Drive type 2WD 4WD
Camber *6
Degree minute (decimal degree) Minimum
-0° 51 ′ (-0.85 °)- 0° 33 ′ (-0.55 °)
Nominal -0° 6 ′ (-0.10 °)0 ° 12 ′ (0.20 °)
Maximum 0° 39 ′ (0.65 °)0 ° 57 ′ (0.95 °)
Cross camber 0° 45 ′ (0.75 °) or less 0 ° 45 ′ (0.75 °) or less
Caster *6
Degree minute (decimal degree) Minimum
3° 15 ′ (3.25 °)2 °45 ′ (2.75 °)
Nominal 4° 0 ′ (4.00 °)3 ° 30 ′ (3.50 °)
Maximum 4° 45 ′ (4.75 °)4 ° 15 ′ (4.25 °)
Cross caster 0° 45 ′ (0.75 °) or less 0
° 45 ′ (0.7
5°) or less
Kingpin inclination
Degree minute (decimal degree) 13
° 32 ′ (13.53 °)1 3°13 ′ (13.22 °)
To t a l t o e - i n Distance (A
− B) Minimum
1.8 mm (0.07 in) 1.8 mm (0.07 in)
Nominal 2.8 mm (0.11 in) 2.8 mm (0.11 in)
Maximum 3.8 mm (0.15 in) 3.8 mm (0.15 in)
Angle (left side or right side)
Degree minute (decimal degree) Minimum
0° 3 ′ (0.05 °)0 ° 3 ′ (0.05 °)
Nominal 0° 5 ′ (0.08 °)0 ° 5 ′ (0.08 °)
Maximum 0° 7 ′ (0.12 °)0 ° 7 ′ (0.12 °)
Wheel turning angle
(full turn) Inside
Degree minute (decimal degree)
34
° 31 ′ – 38 ° 31 ′ *2
(34.52 ° – 38.52 °) 34
° 44 ′ – 38° 44′ *4
(34.73 ° – 38.73 °)
Outs id

e
Degree minute (decimal degree) 30
° 59 ′ – 34 ° 59 ′ *3
(30.98 ° – 34.98 °) 30
° 29 ′ – 34° 29′ *5
(30.48 ° – 34.48 °)
SFA234AC
Revision: March 2010 2008 QX56