2004 INFINITI QX56 oil specification

CYLINDER BLOCK
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Revision: August 20072004 QX56

If out of specification, replace piston ring. If gap still exceeds the limit even with a new ring, re-bore cylin-
der and use oversized piston and piston ring.
CONNECTING ROD BEND AND TORSION

Check the connecting rod alignment using suitable tool.

If measurement exceeds the limit, replace connecting rod
assembly.
CONNECTING ROD BEARING (BIG END)

Install the connecting rod cap without the connecting rod bearing
installed. After tightening the connecting rod bolt to the specified
torque, measure the connecting rod large end inside diameter.
Refer to EM-77, "
ASSEMBLY" .

If measurement exceeds the standard, replace the connecting
rod.
CONNECTING ROD BUSHING OIL CLEARANCE (SMALL END)
Connecting Rod Inside Diameter (Small End)

Measure inside diameter of bushing using suitable tool.Limit:
Bend
: 0.15 mm (0.0059 in) per 100 mm (3.94 in) length
To r s i o n
: 0.30 mm (0.0118 in) per 100 mm (3.94 in) length
SEM 00 3F
SEM 03 8F
Standard : 57.000 - 57.013 mm (2.2441 - 2.2446 in)
PBIC1641E
Standard : 22.000 - 22.006 mm (0.8661 - 0.8664 in)
PBIC0120E

SERVICE DATA AND SPECIFICATIONS (SDS)
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Revision: August 20072004 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitEBS00IM0
GENERAL SPECIFICATIONS
DRIVE BELTS
EXHAUST MANIFOLD
Unit: mm (in) Cylinder arrangementV- 8
Displacement cm
3 (cu in)5,552 (338.80)
Bore and stroke mm (in)98 x 92 (3.86 x 3.62)
Valve arrangementDOHC
Firing order1-8-7-3-6-5-4-2
Number of piston ringsCompression 2
Oil 1
Number of main bearings5
Compression ratio9.8
Compression pressure
kPa (kg/cm
2 , psi)/rpmStandard 1,520 (15.5, 220)/200
Minimum 1,324 (13.5, 192)/200
Differential limit between cylinders 98 (1.0, 14)/200
Cylinder number
Va l v e t i m i n g
Unit: degree
abcde f
232 230 2 48 3 49
SEM 95 7C
PBIC0187E
Tension of drive belts Auto adjustment by auto tensioner
ItemsLimit
Surface distortion Exhaust manifold 0.3 (0.012)

SERVICE DATA AND SPECIFICATIONS (SDS)
EM-105
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Revision: August 20072004 QX56
PISTON, PISTON RING AND PISTON PIN
Available Piston
Unit: mm (in)
Piston Ring
Unit: mm (in)
Piston Pin
Unit: mm (in)
CONNECTING ROD
Unit: mm (in) Items Standard Limit
Piston skirt diameter “A”Grade No. 1 97.980 - 97.990 (3.8575 - 3.8579) —
Grade No. 2 97.990 - 98.000 (3.8579 - 3.8583) —
Grade No. 3 98.000 - 98.010 (3.8583 - 3.8587) —
Grade No. 0
(Service)98.180 - 98.210 (3.8653 - 3.8665) 0.20 (0.0079)
“H” dimension 39 (1.54) —
Piston pin hole diameter Grade No. 0 21.993 - 21.999 (0.8659 - 0.8661) —
Piston to cylinder bore clearance 0.010 - 0.030 (0.0004 - 0.0012) 0.08 (0.0031)
PBIC0188E
Items Standard Limit
Side clearanceTop 0.035 - 0.085 (0.0014 - 0.0033) 0.11 (0.0043)
2nd 0.030 - 0.070 (0.0012 - 0.0028) 0.10 (0.0039)
Oil ring 0.015 - 0.050 (0.0006 - 0.0020) —
End gapTop 0.23 - 0.33 (0.0091 - 0.0130) 0.56 (0.0220)
2nd 0.25 - 0.40 (0.0098 - 0.0157) 0.52 (0.0205)
Oil ring 0.20 - 0.60 (0.0079 - 0.0236) 0.96 (0.0378)
ItemsStandard
Piston pin diameter Grade No. 0 21.989 - 21.995 (0.8657 - 0.8659)
Piston to piston pin clearance 0.002 - 0.006 (0.0001 - 0.0002)
Connecting rod bushing oil clearance 0.005 - 0.017 (0.0002 - 0.0007)
Items Standard Limit
Center distance 154.45 - 154.55 (6.08 - 6.08) —
Bend [per 100 (3.94)] — 0.15 (0.0059)
Torsion [per 100 (3.94)] — 0.30 (0.0118)
Connecting rod bushing inside diameter*
(small end)Grade No. 0 22.000 - 22.006 (0.8661 - 0.8664) —
Connecting rod big end inside diameter (without bearing) 57.000 - 57.013 (2.2441 - 2.2446) —

EM-108Revision: August 2007
SERVICE DATA AND SPECIFICATIONS (SDS)
2004 QX56
Undersize
Unit: mm (in)
Main Bearing Oil Clearance
Unit: mm (in)
Connecting Rod Bearing
Undersize
Unit: mm (in) 0 — 2.483 - 2.486 (0.0978 - 0.0979) Black
Grade is the same for upper
and lower bearings 1 — 2.486 - 2.489 (0.0979 - 0.0980) Brown
2 — 2.489 - 2.492 (0.0980 - 0.0981) Green
3 — 2.492 - 2.495 (0.0981 - 0.0982) Yellow
4 — 2.495 - 2.498 (0.0982 - 0.0983) Blue
5 — 2.498 - 2.501 (0.0983 - 0.0985) Pink
6 — 2.501 - 2.504 (0.0985 - 0.0986) Purple
7 — 2.504 - 2.507 (0.0986 - 0.0987) White
8 — 2.507 - 2.510 (0.0987 - 0.0988) Red
01UPR 2.483 - 2.486 (0.0978 - 0.0979) Black
Grade is different for upper
and lower bearings. LWR 2.486 - 2.489 (0.0979 - 0.0980) Brown
12UPR 2.486 - 2.489 (0.0979 - 0.0980) Brown
LWR 2.489 - 2.492 (0.0980 - 0.0981) Green
23UPR 2.489 - 2.492 (0.0980 - 0.0981) Green
LWR 2.492 - 2.495 (0.0981 - 0.0982) Yellow
34UPR 2.492 - 2.495 (0.0981 - 0.0982) Yellow
LWR 2.495 - 2.498 (0.0982 - 0.0983) Blue
45UPR 2.495 - 2.498 (0.0982 - 0.0983) Blue
LWR 2.498 - 2.501 (0.0983 - 0.0985) Pink
56UPR 2.498 - 2.501 (0.0983 - 0.0985) Pink
LWR 2.501 - 2.504 (0.0985 - 0.0986) Purple
67UPR 2.501 - 2.504 (0.0985 - 0.0986) Purple
LWR 2.504 - 2.507 (0.0986 - 0.0987) White
78UPR 2.504 - 2.507 (0.0986 - 0.0987) White
LWR 2.507 - 2.510 (0.0987 - 0.0988) Red
Undersize Thickness Main journal diameter
0.25 (0.0098) 2.618 - 2.626 (0.1031 - 0.1034) Grind so that bearing clearance is the specified value.
Items Standard Limit
Main bearing oil clearanceNo.1 and 5 0.001 - 0.011 (0.00004 - 0.0004) 0.021 (0.0008)
No.2, 3 and 4 0.007 - 0.017 (0.0003 - 0.0007) 0.027 (0.0011)
Grade number Thickness “T” mm (in) Identification color (mark)
0 1.500 - 1.503 (0.0591 - 0.0592) Black
1 1.503 - 1.506 (0.0592 - 0.0593) Brown
2 1.506 - 1.509 (0.0593 - 0.0594) Green
3 1.509 - 1.512 (0.0594 - 0.0595) Yellow
Undersize Thickness Crank pin journal diameter “Dp”
0.25 (0.0098) 1.627 - 1.635 (0.0641 - 0.0644) Grind so that bearing clearance is the specified value.

SERVICE DATA AND SPECIFICATIONS (SDS)
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Connecting Rod Bearing Oil Clearance
Unit: mm (in)
Items Standard Limit
Connecting rod bearing oil clearance 0.020 - 0.039 (0.0008 - 0.0015) 0.055 (0.0022)

FFD-1
FRONT FINAL DRIVE
D DRIVELINE/AXLE
CONTENTS
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SECTION FFD
A
B
FFD
Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 2
Precautions .............................................................. 2
Precautions for Liquid Gasket .................................. 2
REMOVAL OF LIQUID GASKET SEALING .......... 2
LIQUID GASKET APPLICATION PROCEDURE ..... 2
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
Commercial Service Tools ........................................ 6
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 7
NVH Troubleshooting Chart ..................................... 7
FRONT OIL SEAL ...................................................... 8
Removal and Installation .......................................... 8
REMOVAL ............................................................. 8
INSTALLATION ..................................................... 9
SIDE OIL SEALS ...................................................... 10
Removal and Installation ........................................ 10
REMOVAL ........................................................... 10
REAR COVER GASKET ...........................................11
Removal and Installation .........................................11
REMOVAL ............................................................11
INSTALLATION ....................................................11FRONT FINAL DRIVE ASSEMBLY .......................... 12
Removal and Installation ........................................ 12
REMOVAL ........................................................... 12
INSTALLATION ................................................... 13
Disassembly and Assembly .................................... 14
COMPONENTS ................................................... 14
ASSEMBLY INSPECTION AND ADJUSTMENT ... 15
DISASSEMBLY ................................................... 17
INSPECTION AFTER DISASSEMBLY ................ 22
ADJUSTMENT AND SELECTION OF ADJUST-
ING WASHERS ................................................... 23
ASSEMBLY ......................................................... 24
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 32
General Specifications ............................................ 32
Inspection and Adjustment ..................................... 32
DIFFERENTIAL SIDE GEAR CLEARANCE ....... 32
PRELOAD TORQUE ........................................... 32
BACKLASH ......................................................... 32
COMPANION FLANGE RUNOUT ....................... 32
SELECTIVE PARTS ............................................ 32

FRONT FINAL DRIVE ASSEMBLY
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Revision: August 20072004 QX56
ASSEMBLY INSPECTION AND ADJUSTMENT

Before inspection and adjustment, drain gear oil.
Total Preload Torque
1. Rotate drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.
2. Rotate drive pinion at least 20 times to check for smooth operation of the bearing.
3. Measure total preload with preload gauge.

If measured value is out of the specification, disassemble it to
check and adjust each part. Adjust the pinion bearing preload
and side bearing preload.
Adjust the pinion bearing preload first, then adjust the side bear-
ing preload.
Tooth Contact
1. Remove rear cover. Refer to FFD-11, "REMOVAL" .
2. Thoroughly clean drive gear and drive pinion teeth.
3. Lightly apply a mixture of powdered ferric oxide and oil or the
equivalent. Apply it to 3 or 4 teeth of drive gear drive side.
4. Rotate drive gear back and forth several times, check drive pin-
ion gear to drive gear tooth contact.
CAUTION:
Check tooth contact on drive side and reverse side.
34. Bushing 35. Bearing 36 Screw
37 Dowel pin
Tool number : ST3127S000 (J-25765-A)
Total preload (with oil seal):
2.98 - 4.76 N·m (0.31 - 0.48 kg-m, 27 - 42 in-lb)
SDIA2220E
When the preload torque is large
On pinion bearings: Replace the collapsible spacer.
On side bearings: Loosen the side bearing adjust nuts at the same force on each side.
When the preload is small
On pinion bearings: Tighten the drive pinion nut.
On side bearings: Tighten the side bearing adjust nuts at the same force on each side.
SDIA2248E
SDIA2249E

FFD-32
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: August 20072004 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsEDS0035O
Inspection and AdjustmentEDS0035P
DIFFERENTIAL SIDE GEAR CLEARANCE
PRELOAD TORQUE
BACKLASH
COMPANION FLANGE RUNOUT
SELECTIVE PARTS
Side Gear Thrust Washer
*: Always check with the Parts Department for the latest parts information.EngineVK56E
Vehicle gradeAll
Final drive modelM205
2-pinion
Gear ratio3.357:1
Number of teeth (Drive gear/Drive pinion) 47/14
Oil capacity (Approx.)
1.6 (3 3/8 US pt, 2 7/8 lmp pt)
Item Specification
Side gear backlash
(Clearance between side gear and differential case)0.20 mm (0.0079 in) or less
Item Specification
Pinion bearing 2.3 - 3.4 N·m (24 - 34 kg-cm, 21 - 30 in-lb)
Total preload 2.98 - 4.76 N·m (0.31 - 0.48 kg-m, 27 - 42 in-lb)
Item Specification
Drive gear to drive pinion gear 0.12 - 0.20 mm (0.0050 - 0.0079 in)
Item Runout limit
Companion flange face 0.10 mm (0.0039 in)
Inner side of the companion flange 0.13 mm (0.0051 in)
Available side gear
thrust washersThickness mm (in) Package part number*
0.76 (0.030)
0.79 (0.031)
0.81 (0.032)
0.84 (0.033)
0.87 (0.034)38424 8S111
0.89 (0.035)
0.91 (0.036)
0.94 (0.037)
0.97 (0.038)
0.99 (0.039)38424 8S112