2004 INFINITI QX56 recommended oil

EM-74Revision: August 2007
CYLINDER BLOCK
2004 QX56
* Refer to GI-45, "Recommended Chemical Products and Sealants" .
DISASSEMBLY
1. Remove engine assembly. Refer to EM-70, "REMOVAL" .
2. Remove the drive plate.

Hold the crankshaft pulley bolt to lock the crankshaft and remove the drive plate bolts.

Loosen bolts diagonally.
CAUTION:

Be careful not to damage drive plate. Especially avoid
deforming and damaging of signal plate teeth (circum-
ference position).

Place the drive plate with signal plate surface facing
other than downward.

Keep magnetic materials away from signal plate.
3. Lift the engine with hoist to install it onto engine stand. Refer to EM-70, "
REMOVAL" .
CAUTION:

Use an engine stand that has a load capacity [approximately 240kg (529 lb) or more] large
enough for supporting the engine weight.

Before removing the hanging chains, make sure the engine stand is stable and there is no risk
of overturning.

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 fuel tube and fuel injector assembly. Refer to EM-29, "REMOVAL" .
–Remove intake manifold. Refer to EM-15, "REMOVAL" .
–Remove exhaust manifold. Refer to EM-19, "REMOVAL" .
–Remove A/C compressor fitting bolts and brackets. Refer to ATC-166, "REMOVAL" .
–Remove ignition coil. Refer to EM-26, "REMOVAL" .
–Remove rocker cover. Refer to EM-33, "REMOVAL" .
–Other removable brackets.
4. Drain engine oil. Refer to MA-16, "
Changing Engine Oil" .
1. Knock sensor sub-harness 2. Knock sensor 3. Cylinder block
4. Main bearing 5. Top ring 6. Second ring
7. Oil ring 8. Crankshaft key 9. Piston
10. Connecting rod 11. Snap ring 12. Piston pin
13. Connecting rod bearing 14. Connecting rod bearing cap 15. Main bearing cap
16. Thrust bearing 17. Main bearing 18. Crankshaft
19. Pilot converter 20. Thrust bearing 21. Side bolt
22. Drive plate 23. Reinforcement plate 24. Rear oil seal retainer
25. Rear oil seal 26. Transmission 27. O-ring
28. Crankshaft position sensor (POS) 29. Gasket 30. Cylinder block heater
31. Connector cap
KBIA2491E

CYLINDER BLOCK
EM-77
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: August 20072004 QX56
d. Remove the main bearing cap.

Insert bolts (2) into bolt holes, and then remove main bearing
cap by lifting up and shaking forward and backward.
15. Remove the crankshaft.
16. Remove the main bearings and thrust bearings from the cylinder block and main bearing caps.

When removing them, note the installation position. Keep them in the correct order.
17. Remove the pilot converter using Tool if necessary.
ASSEMBLY
1. Fully air-blow the coolant and oil passages in the cylinder block, cylinder bore, and crankcase to remove
any 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-
45, "Recommended Chemical Products and Sealants".

Replace the copper washers with new ones.

Tighten each plug as specified below.
3. Install the main bearings and thrust bearings.
a. Remove dust, dirt, and oil on the bearing mating surfaces of the
cylinder block and main bearing caps.
b. Install the thrust bearings to both sides of the No. 3 journal hous-
ing on the cylinder block and main bearing caps

Install the thrust bearings with the oil groove facing the crank-
shaft arm (outside).

Install the thrust bearings with a protrusion in the center on
the main bearing caps.
KBIA2492E
Tool number : ST16610001 (J-23907)
WBIA0596E
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

CYLINDER BLOCK
EM-79
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: August 20072004 QX56
Rotate crankshaft by hand after bolts are tightened. Check if it rotates smoothly.

Check the crankshaft side clearance. Refer to EM-89, "CRANKSHAFT END PLAY" .
8. Install rear oil seal to rear oil seal retainer.
CAUTION:
Do not damage or scratch outer circumference of oil seal.

Install new rear oil seal in the direction shown.

Tap until flattened with front edge of rear oil seal retainer
using suitable tool.

Fit the rear oil seal until it is level with the rear end surface of
rear oil seal retainer.
9. Install rear oil seal retainer.

Apply liquid gasket to rear oil seal retainer as shown.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-45, "
Recommended Chemical Products and Sealants".

Apply new engine oil on lips of rear oil seal. Do not touch.
10. Install the piston to the connecting rod.
a. Install the snap ring to the grooves of the piston rear side.

Insert it fully into groove to install.
b. Install the piston to the connecting rod.

Heat the piston until the piston pin can be pushed in by hand without excess force [approx. 60° to 70 C°
(140° to 158 °F)]. From the front to the rear, insert the piston pin into the piston and the connecting rod. Main bearing cap sub
bolts in order of 11 to 20: 30°
Side bolts in order of 21 to
30: 49 N·m (5.0 kg-m, 36 ft-lb)
SEM 71 5A
PBIC0097E
SBIA0391E

FFD-2
PRECAUTIONS
Revision: August 20072004 QX56
PRECAUTIONSPFP:00001
PrecautionsEDS0035E
CAUTION:

Before starting diagnosis of the vehicle, understand symptoms well. Perform correct and system-
atic operations.

Check for the correct installation status prior removal or disassembly. When matching marks are
required, be sure they do not interfere with the function of the parts they are applied to.

Carry out an overhaul in a clean work place, Using a dust proof room is recommended.

Before disassembly, using steam or white gasoline, completely remove sand and mud from the
exterior the unit, preventing them from entering into the unit during disassembly or assembly.

Check appearance of the disassembled parts for damage, deformation, and abnormal wear. If a
malfunction is detected, replace it with a new one.

Normally replace lock pins, oil seals, and bearings with new ones every times they are removed.

In principle, tighten bolts or nuts gradually in several steps working diagonally from inside to out-
side. If tightening sequence is specified, observe it.

Clean and flush the parts sufficiently and blow them dry.

Be careful not to damage the sliding surfaces and mating surface.

When applying sealant, remove the old sealant from the mounting surface; then remove any mois-
ture, oil, and foreign materials from the application and mounting surfaces.

Always use shop paper for cleaning the inside of components.

Avoid using cotton gloves or a shop cloth to prevent entering of lint.

During assembly, observe the specified tightening torque, and new differential gear oil, Vaseline,
or multi-purpose grease, as specified for each vehicle, when necessary.
Precautions for Liquid GasketEDS0035F
REMOVAL OF LIQUID GASKET SEALING

After removing nuts and bolts, separate the mating surface and
remove old liquid gasket sealing using Tool.
CAUTION:
Be careful not to damage the mating surfaces.

Tap seal cutter to insert it, and then slide it by tapping on the
side as shown.

In areas where Tool is difficult to use, use plastic hammer to
lightly tap the parts, to remove it.
CAUTION:
If for some unavoidable reason tool such as screwdriver is
used, be careful not to damage the mating surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using scraper, remove old liquid gasket adhering to the gasket
application surface and the mating surface.

Remove liquid gasket completely from the groove of the gas-
ket application surface, bolts, and bolt holes.
2. Thoroughly clean the mating surfaces and remove adhering
moisture, grease and foreign materials.Tool number : KV10111100 (J-37228)
WBIA0566E
PBIC0003E

PRECAUTIONS
FFD-3
C
E
F
G
H
I
J
K
L
MA
B
FFD
Revision: August 20072004 QX56
3. Attach liquid gasket tube to Tool.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-45, "
Recommended Chemical Products and Sealants" .
4. Apply liquid gasket without breaks to the specified location with
the specified dimensions.

If there is a groove for liquid gasket application, apply liquid
gasket to the groove.

As for bolt holes, normally apply liquid gasket inside the
holes. Occasionally, it should be applied outside the holes.
Make sure to read the text of this manual.

Within five minutes of liquid gasket application, install the mat-
ing component.

If liquid gasket protrudes, wipe it off immediately.

Do not retighten nuts or bolts after the installation.

After 30 minutes or more have passed from the installation, fill
engine oil and engine coolant.
CAUTION:
If there are specific instructions in this manual, observe
them.Tool number : WS39930000 ( — )
WBIA0567E
SEM 15 9F

REAR COVER GASKET
FFD-11
C
E
F
G
H
I
J
K
L
MA
B
FFD
Revision: August 20072004 QX56
REAR COVER GASKETPFP:38320
Removal and InstallationEDS0035L
REMOVAL
1. Remove front final drive. Refer to FFD-12, "REMOVAL" .
2. Drain gear oil. Refer to MA-25, "
Changing Final Drive Oil" .
3. Remove rear cover using Tool.
INSTALLATION
1. Apply 3.2mm (0.126 in) bead of sealant to the rear cover using
Tool.

Use Genuine Silicone RTV sealant or equivalent. Refer to. GI-
45, "Recommended Chemical Products and Sealants" .
2. Install rear cover and tighten rear cover bolts in the order shown
FFD-11, "
INSTALLATION" .
3. Fill final drive with recommended gear oil. Refer to GI-45, "
Rec-
ommended Chemical Products and Sealants" .
4. Install front final drive. Refer to FFD-13, "
INSTALLATION" . Tool number : KV10111100 (J-37228)
Tool number :WS39930000 ( — )
SDIA3204E
WDIA0290E

FFD-30
FRONT FINAL DRIVE ASSEMBLY
Revision: August 20072004 QX56
11. Install side bearing adjust nut into gear carrier.
12. Install differential case assembly with side bearing outer races
into gear carrier.
13. Align mark on bearing cap with that on gear carrier and install
bearing cap on gear carrier.

Do not tighten at this step. This allows further tightening of
side bearing adjusters.
14. Tighten each side bearing adjust nuts alternately turning drive
gear.
15. Check and adjust tooth contact and drive gear to drive pinion
backlash. Refer to FFD-15, "
Tooth Contact" , FFD-16, "Back-
lash" .
Recheck above items. Readjust the above description, if neces-
sary.
16. After adjusting tooth contact and drive gear to drive pinion back-
lash, fix adjuster with screws and tighten cap bolt to the speci-
fied torque. Refer to FFD-14, "
COMPONENTS" .
17. Check total preload torque. Refer to FFD-15, "
Total Preload
To r q u e" .
18. Apply recommended sealant to mating surface of rear cover.
CAUTION:
Remove old sealant adhering to mounting surfaces. Also
remove any moisture, oil, or foreign material adhering to
application and mounting surfaces.
19. Install rear cover on gear carrier and tighten bolts with the spec-
ified torque. Refer to FFD-11, "
INSTALLATION" .
20. Apply multi-purpose grease to cavity at sealing lips of oil seal.
Install side oil seal.
SPD5 27
SDIA2258E
SDIA2265E
SDIA2263E
SDIA3204E

FSU-6
ON-VEHICLE SERVICE
Revision: August 20072004 QX56
ON-VEHICLE SERVICEPFP:00000
Front Suspension PartsEES0010I
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 FSU-15, "
Inspection" .

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 AlignmentEES0010J
PRELIMINARY INSPECTION
WAR NIN G:
Always adjust the alignment with the vehicle on a flat surface.
NOTE:
If alignment is out of specification, inspect and replace any damaged or worn rear 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-4, "
Inspection" .
4. Check the wheel bearing axial end play. Refer to FAX-5, "
WHEEL BEARING INSPECTION" .
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-21, "
Wheelarch Height (Unladen*1 )" .

For air leveling vehicles, verify the level using Consult-II memory register 1103 and set to 0 ± 10 mm (0
± 0.39 in) as necessary.
GENERAL INFORMATION AND RECOMMENDATIONS
1. A Four-Wheel Thrust Alignment should be performed.

This type of alignment is recommended 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 capable 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.

Your alignment machine should be regularly calibrated in order to give correct information.Suspension component torques : Refer to FSU-5,
"Components" .
SM A52 5A
SFA392B