differential INFINITI FX35 2005 Owner's Manual

FRONT FINAL DRIVE ASSEMBLY FFD-27
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20. Turn pinion mate gear, then remove pinion mate gears, pinion
mate thrust washers, side gears and side gear thrust washers
from differential case.
Drive Pinion Assembly
1. Remove differential assembly. Refer to FFD-24, "Differential Assembly" .
2. Remove drive pinion lock nut with a flange wrench.
3. Put matching mark on the end of drive pinion. The matching mark should be in line with the matching mark A on companion
flange.
CAUTION:
For matching mark, use paint. Do not damage companion
flange and drive pinion.
NOTE:
The matching mark A on the final drive companion flange indi-
cates the maximum vertical runout position.
When replacing companion flange, matching mark is not neces-
sary.
4. Remove companion flange using the suitable puller.
SDIA0032J
PDIA0741E
PDIA0675E
SDIA1132E

FFD-28
FRONT FINAL DRIVE ASSEMBLY
Revision: 2005 July 2005 FX
5. Press drive pinion assembly out of gear carrier.
CAUTION:
Do not drop drive pinion assembly.
6. Remove front oil seal.
7. Remove pinion front bearing inner race.
8. Remove drive pinion bearing adjusting washer and drive pinion adjusting washer.
9. Remove pinion rear bearing inner race and drive pinion height adjusting washer with replacer.
10. Tap pinion front/rear bearing outer races uniformly a brass rod or equivalent to removed.
CAUTION:
Be careful not to damage gear carrier.
INSPECTION AFTER DISASSEMBLY
Clean up the disassembled parts. Then, inspect if the parts are worn or damaged. If so, follow the measures
below.
PDIA0676E
Tool number : ST30031000 (J-22912-01)
S-PD179
PDIA0677E
Content Conditions and Measures
Hypoid gear

If the gear teeth do not mesh or line-up correctly, determine the cause and adjust or replace as nec-
essary.

If the gears are worn, cracked, damaged, pitted or chipped (by friction) noticeably, replace with new
drive gear and drive pinion as a set.
Bearing

If any chipped (by friction), pitted, worn, rusted or scratched mark, or unusual noise from the bearing
is observed, replace as a bearing assembly (as a new set).
Side gear and Pinion mate
gear

If any cracks or damage on the surface of the tooth is found, replace.

If any worn or chipped mark on the contact sides of the thrust washer is found, replace.
Side gear thrust washer and
pinion mate thrust washer

If it is chipped (by friction), damaged, or unusually worn, replace.
Oil seal

Whenever disassembled, replace.

If wear, deterioration of adherence (sealing force lips), or damage is detected on the lips, replace
them.
Differential case

If any wear or crack on the contact sides of the differential case is found, replace.
Companion flange

If any chipped mark (about 0.1 mm, 0.004 in) or other damage on the contact sides of the lips of the
companion flange is found, replace.

FRONT FINAL DRIVE ASSEMBLY FFD-29
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ADJUSTMENT AND SELECTION OF ADJUSTING WASHERS (SHIMS)
Differential Side Gear Clearance

Assemble the differential parts if they are disassembled. Refer to FFD-34, "Differential Assembly" .
1. Place differential case straight up so that side gear to be mea- sured comes upward.
2. Using feeler gauge, measure the clearance between side gear back and differential case at 3 different points, while rotating
side gear. Average the 3 readings, and then measure the clear-
ance of the other side as well.
CAUTION:
To prevent side gear from tilting, insert feeler gauges with
the same thickness from both sides.
3. If the back clearance is outside the specification, use a thicker/ thinner side gear thrust washer to adjust. Refer to FFD-39, "
Side
Gear Thrust Washer" .
CAUTION:
Select a side gear thrust washer for right and left individu-
ally.
Side Bearing Preload
1. Make sure all parts are clean. Also, make sure the bearings are well lubricated with gear oil.
2. Press-fit side bearing outer race into side retainer with tool.
CAUTION:

At first, using a hammer, tap bearing outer race until it
becomes flat to side retainer.

Do not reuse side bearing outer race.
PDIA0460E
Side gear back clearance specification:
0.2 mm (0.008 in) or less.
(Each gear should rotate smoothly without excessive
resistance during differential motion.)
When the back clearance is large: Use a thicker thrust washer.
When the back clearance is small: Use a thinner thrust washer.
PDIA0576E
Tool number A: KV31103000 ( — ) B: ST30611000 (J-25742-1)
PDIA0679E

FFD-30
FRONT FINAL DRIVE ASSEMBLY
Revision: 2005 July 2005 FX
3. Press-fit side bearing outer race into gear carrier with tool.
CAUTION:

At first, using a hammer, tap bearing outer race until it
becomes flat to gear carrier.

Do not reuse side bearing outer race.
4. Place the differential case assembly into gear carrier.
5. Install side bearing adjusting shim before disassembling or shim which thickness is the same as the one before disassembling.
6. Install side retainer assembly to gear carrier.
CAUTION:
Do not install O-ring.
7. Install side retainer mounting bolts to the specified torque. Refer to FFD-16, "
COMPONENTS (VQ35DE MODELS)" , FFD-18,
"COMPONENTS (VK45DE MODELS)" .
8. Measure the turning torque of the gear carrier at the drive gear mounting bolts with a spring gauge. Tool number A: KV31103000 ( — )
B: ST30611000 (J-25742-1)
PDIA0824E
PDIA0671E
PDIA0678E
PDIA0669E
Tool number : — (J-8129)
Specification:
0.78 - 1.08 N (0.08 - 0.11 kg, 0.57 - 0.80 lb) of pulling
force at the drive gear bolt
SPD194A

FFD-34
FRONT FINAL DRIVE ASSEMBLY
Revision: 2005 July 2005 FX
10. Install companion flange.
NOTE:
When reusing drive pinion, align the matching mark of drive pin-
ion with the matching mark A of companion flange, then install
companion flange.
11. Apply gear oil to the thread and seat of new drive pinion lock nut, and temporarily tighten drive pinion lock nut to drive pinion.
CAUTION:
Do not reuse drive pinion lock nut.
12. Tighten to drive pinon lock nut, while adjust pinion bearing pre- load torque.
CAUTION:

Adjust to the lower limit of the drive pinion lock nut tight-
ening torque first.

After adjustment, rotate drive pinion back and forth 2 to 3
times to check for unusual noise, rotation malfunction,
and other malfunctions.
13. Install differential case assembly. Refer to FFD-34, "
Differential
Assembly" .
CAUTION:
Do not install carrier cover yet.
14. Check and adjust drive gear runout, tooth contact, drive gear to drive pinion backlash, and companion flange runout. Refer to FFD-20, "
Drive Gear Runout" , FFD-21, "Tooth Contact" , FFD-23, "Backlash" ,
FFD-23, "
Companion Flange Runout" .
Recheck above items. Readjust the above description, if necessary.
15. Check total preload torque. Refer to FFD-20, "
Total Preload Torque" .
16. Install carrier cover. Refer to FFD-34, "
Differential Assembly" .
Differential Assembly
1. Install side gear thrust washers with the same thickness as the
ones installed prior to disassembly or reinstall the old ones on
the side gears.
PDIA0675E
Tool number : ST3127S000 (J-25765-A)
Drive pinion lock nut tightening torque: 127.4 - 245.0 N·m (13 - 25 kg-m, 94 - 181 ft-lb)
Pinion bearing preload: 0.78 - 1.57 N·m (0.08 - 0.16 kg-m, 7 - 13 in-lb)
PDIA0778E
SDIA0193J

FRONT FINAL DRIVE ASSEMBLY FFD-35
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2. Install side gears and thrust washers into differential case.
CAUTION:

Do not reuse circular clip.

Make sure that the circular clip is installed to side gear
(side retainer side).
3. Align 2 pinion mate gears in diagonally opposite positions, then rotate and install them into differential case after installing thrust
washer to pinion mate gear.
4. Align the lock pin holes on differential case with shaft, and install pinion mate shaft.
5. Measure side gear end play. If necessary, select the appropriate side gear thrust washers. Refer to FFD-29, "
Differential Side
Gear Clearance" .
6. Drive a lock pin into pinion mate shaft, using a punch. Make sure lock pin is flush with differential case.
CAUTION:
Do not reuse lock pin.
7. Align the matching mark of drive gear with the mark of differen- tial case, then place drive gear.
8. Apply thread locking sealant into the thread hole of drive gear.

Use Genuine Medium Strength Thread Locking Sealant or
equivalent. Refer to GI-48, "
Recommended Chemical
Products and Sealants" .
CAUTION:
Drive gear back and threaded holes shall be cleaned and
degreased sufficiently.
SDIA2025E
SDIA0195J
SPD030
SDIA2593E
SDIA2594E

FFD-36
FRONT FINAL DRIVE ASSEMBLY
Revision: 2005 July 2005 FX
9. Install drive gear on the mounting bolts, and then tighten to the
specified torque. Refer to FFD-16, "
COMPONENTS (VQ35DE
MODELS)" , FFD-18, "COMPONENTS (VK45DE MODELS)" .
CAUTION:
Tighten bolts in a crisscross fashion.
10. Press side bearing inner races to differential case, using the drift and the base.
CAUTION:
Do not reuse side bearing inner race.
11. Press-fit side bearing outer race into side retainer with the drift and the drift bar.
CAUTION:

At first, using a hammer, tap bearing outer race until it
becomes flat to side retainer.

Do not reuse side bearing outer race.
12. Press-fit side bearing outer race into gear carrier with the drift and the drift bar.
CAUTION:

At first, using a hammer, tap bearing outer race until it
becomes flat to gear carrier.

Do not reuse side bearing outer race.
13. Place the differential case assembly into gear carrier.
14. Measure side bearing preload. If necessary, select the appropri- ate side bearing adjusting shim. Refer to FFD-29, "
Side Bearing
Preload" .
SDIA0247J
Tool number A: ST33230000 (J-25805-01)
B: ST33061000 (J-8107-2)
SDIA1678E
Tool number A: KV31103000 (J-38982)B: ST30611000 (J-25742-1)
PDIA0679E
Tool number A: KV31103000 (J-38982)B: ST30611000 (J-25742-1)
PDIA0824E
PDIA0671E

SERVICE DATA AND SPECIFICATIONS (SDS) FFD-39
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsADS0019Z
Inspection and AdjustmentADS001A0
DRIVE GEAR RUNOUT
Unit: mm (in)
DIFFERENTIAL SIDE GEAR CLEARANCE
Unit: mm (in)
PRELOAD TORQUE
Unit: N·m (kg-m, in-lb)
BACKLASH
Unit: mm (in)
COMPANION FLANGE RUNOUT
Unit: mm (in)
SELECTIVE PARTS
Side Gear Thrust Washer
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information. Applied model VQ35DE VK45DE
Final drive model F160A
Gear ratio 3.692
Number of teeth (Drive gear/Drive pinion) 48/13
Oil capacity (Approx.) (US pt, lmp pt) 0.65 (1-3/8, 1-1/8)
Number of pinion gears 2
Drive pinion adjustment spacer type Solid
Item Runout limit
Drive gear back face 0.05 (0.0020) or less
Item Specification
Side gear backlash (Clearance between side gear and differential
case) 0.2 (0.008) or less
(Each gear should rotate smoothly without excessive resistance
during differential motion.)
Item Specification
Pinion bearing (P
1 ) 0.78 - 1.57 (0.08 - 0.16, 7 - 13)
Side bearing (P
2 ) 0.78 - 1.08 (0.08 - 0.11, 7 - 9)
Side bearing to pinion bearing (Total preload)
(Total preload = P
1 + P2 ) 1.56 - 2.65 (0.16 - 0.27, 14 - 23)
Item Specification
Drive gear to drive pinion gear 0.10 - 0.15 (0.0039 - 0.0059)
Item Runout limit
Companion flange face 0.18 (0.0070) or less
Inner side of the companion flange 0.13 (0.0051) or less
Thickness Part number* Thickness Part number*
0.68 (0.0268)
0.71 (0.0280)
0.74 (0.0291)
0.77 (0.0303)
0.80 (0.0315)
0.83 (0.0327) 38424 W1010
38424 W1011
38424 W1012
38424 W1013
38424 W1014
38424 W1015 0.86 (0.0339)
0.89 (0.0350)
0.92 (0.0362)
0.95 (0.0374)
0.98 (0.0386)
1.01 (0.0398) 38424 W1016
38424 W1017
38424 W1018
38424 W1019
38424 W1020
38424 W1021

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING FSU-5
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartAES000N2
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable Reference page
FSU-8FSU-12
—
—
—
FSU-8FSU-6FSU-16
NVH in PR section
NVH in RFD section
NVH in RAX and RSU section
NVH in WT section
NVH in WT section
NVH in RAX section NVH in BR section NVH in PS section
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Strut deformation, damage or deflection
Bushing or mounting deterioration
Parts interference
Spring fatigue
Suspension looseness
Incorrect wheel alignment
Stabilizer bar fatigue
PROPELLER SHAFT (For AWD models)
DIFFERENTIAL (For AWD models)
REAR AXLE AND REAR SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT (For AWD models)
BRAKES
STEERING
Symptom FRONT SUSPENSION Noise
××××× × ××× ×××××
Shake ×××× × × × ×××××
Vibration ××××× × ×× × ×
Shimmy ×××× × ××× ××
Judder ××× ××× ××
Poor quality ride or han-
dling ××××× ×× ×××

TERMINOLOGY GI-53
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Exhaust gas recirculation control-BPT
valve EGRC-BPT valve BPT valve
Exhaust gas recirculation control-solenoid
valve EGRC-solenoid valve EGR control solenoid valve
Exhaust gas recirculation temperature sen-
sor EGRT sensor Exhaust gas temperature sensor
EGR temperature sensor
Flash electrically erasable programmable
read only memory FEEPROM ***
Flash erasable programmable read only
memory FEPROM ***
Flexible fuel sensor FFS ***
Flexible fuel system FF system ***
Fuel pressure regulator *** Pressure regulator
Fuel pressure regulator control solenoid
valve *** PRVR control solenoid valve
Fuel trim FT ***
Heated Oxygen sensor HO2S Exhaust gas sensor
Idle air control system IAC system Idle speed control
Idle air control valve-air regulator IACV-air regulator Air regulator
Idle air control valve-auxiliary air control
valve IACV-AAC valve Auxiliary air control (AAC) valve
Idle air control valve-FICD solenoid valve IACV-FICD solenoid valve FICD solenoid valve
Idle air control valve-idle up control sole-
noid valve IACV-idle up control solenoid valve Idle up control solenoid valve
Idle speed control-FI pot ISC-FI pot FI pot
Idle speed control system ISC system ***
Ignition control IC ***
Ignition control module ICM ***
Indirect fuel injection system IFI system ***
Intake air IA Air
Intake air temperature sensor IAT sensor Air temperature sensor
Knock *** Detonation
Knock sensor KS Detonation sensor
Malfunction indicator lamp MIL Check engine light
Manifold absolute pressure MAP ***
Manifold absolute pressure sensor MAPS ***
Manifold differential pressure MDP ***
Manifold differential pressure sensor MDPS ***
Manifold surface temperature MST ***
Manifold surface temperature sensor MSTS ***
Manifold vacuum zone MVZ ***
Manifold vacuum zone sensor MVZS ***
Mass air flow sensor MAFS Air flow meter
Mixture control solenoid valve MC solenoid valve Air-fuel ratio control solenoid valve
Multiport fuel injection System MFI system Fuel injection control NEW TERM
NEW ACRONYM /
ABBREVIATION OLD TERM