Page 3041 of 4449
FFD-6
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: 2004 November 2004 FX35/FX45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartADS000N6
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
Refer to FFD-24, "
INSPECTION
" .
Refer to FFD-30, "
TOOTH CONTACT INSPECTION
" .
Refer to FFD-24, "
INSPECTION
" .
Refer to RFD-13, "
Pre-Inspection
"
—
Refer to MA-31, "
Checking Differential Gear Oil
" .
NVH in PR section.
NVH in FAX, RAX, FSU and RSU sections.
NVH in WT section.
NVH in WT section.
NVH in FAX section.
NVH in BR section.
NVH in PS section.
Possible cause and suspected parts
Rough gear tooth
Improper gear contact
Tooth surfaces worn
Incorrect backlash
Companion flange excessive runout
Improper gear oil
Propeller shaft
Axle and suspension
Tire s
Road wheel
Drive shaft
Brakes
Steering
Symptom Differential Noise×××××××××××××
Page 3042 of 4449
FRONT OIL SEAL
FFD-7
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Revision: 2004 November 2004 FX35/FX45
FRONT OIL SEALPFP:38189
Removal and InstallationADS000N7
REMOVAL
1. Remove the front propeller shaft. Refer to PR-4, "REMOVAL" .
2. Put a matching mark on the end of the drive pinion correspond-
ing to the B position matching mark on the final drive companion
flange.
CAUTION:
For matching mark, use paint. Never damage drive pin-
ion.
The matching mark B on the final drive companion flange
indicates the maximum vertical runout position.
3. Using the drive pinion flange wrench.Remove drive pinion lock
nut with tool.
4. Remove the companion flange using puller (commercial service
tool)
5. Remove the front oil seal using outer race puller.
SDIA1609E
Tool number : KV40104000 ( – )
SDIA1647E
SDIA1642E
Tool number : ST33290001 (J34286)
SDIA1643E
Page 3043 of 4449
FFD-8
FRONT OIL SEAL
Revision: 2004 November 2004 FX35/FX45
INSTALLATION
1. Apply multi-purpose grease to sealing lips of the oil seal. Drive
the oil seal into the differential case using special service tool so
that the oil seal flush with the gear carrier end.
NOTE:
When installing the front oil seal, be careful not to get it
inclined.
Discard the old front oil seal. Always replace it with a new
one.
2. Install the companion flange while align the matching mark of
the drive pinion with the matching mark B of the companion
flange.
3. Apply oil to the drive pinion threads and the seating surface of
drive pinion lock nut.
4. Using the drive pinion flange wrench. Install drive pinion lock nut
with tool.
CAUTION:
Do not reuse the drive pinion lock nut. Always replace it
with a new one.
5. Install the front propeller shaft. Refer to PR-5, "
INSTALLATION"
.Tool number A : ST33400001 (J26082)
B : KV38102510 ( – )
SDIA1645E
SDIA1609E
Tool number : KV40104000 ( – )
SDIA1647E
Page 3044 of 4449

SIDE OIL SEAL
FFD-9
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Revision: 2004 November 2004 FX35/FX45
SIDE OIL SEALPFP:33142
Removal and InstallationADS000N8
REMOVAL
Right Side:
1. Remove the front ABS wheel sensor.
2. Remove the front drive shaft. Refer to FAX-13, "
Removal and Installation (Right Side)" .
3. Remove the side oil seal using puller.
Left Side:
1. Remove the front drive shaft. Refer to FAX-12, "Removal and Installation (Left Side)" .
2. Remove the side shaft assembly.
3. Remove the front final drive assembly from vehicle. Refer to FFD-10, "
Removal and Installation
(VQ35DE)" or FFD-11, "Removal and Installation (VK45DE)" .
4. Remove the side oil seal using puller.
INSTALLATION
Right Side:
1. Apply multi-purpose grease to sealing lips of side oil seal.
2. Using the drift, press-fit side oil seal so that its surface comes
face to face with the end surface of the case.
CAUTION:
When installing the side oil seal, be careful not to get it
inclined.
Do not reuse the side oil seal. Always replace the oil seal
with a new ones.
3. Install the front drive shaft. Refer to FAX-13, "
Removal and
Installation (Right Side)" .
Left Side:
1. Apply multi-purpose grease to sealing lips of side oil seal.
2. Using the drift, press-fit side oil seal so that its surface comes
face to face with the end surface of the case.
CAUTION:
When installing the side oil seal, be careful not to get it
inclined.
Do not reuse the side oil seal. Always replace the oil seal
with a new ones.
3. Install the front drive shaft. Refer to FAX-12, "
Removal and
Installation (Left Side)" . Tool number : ST33290001 (J34286)
SDIA1787E
Tool number : ST33290001 (J34286)
Tool number : ST33400001 (J26082)
SDIA1646E
Tool number : ST33210000 ( – )
SDIA1662E
Page 3045 of 4449

FFD-10
FRONT FINAL DRIVE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
FRONT FINAL DRIVE ASSEMBLYPFP:38500
Removal and Installation (VQ35DE)ADS000N9
REMOVAL
1. Remove the three engine mounting bracket upper bolts.
2. Remove the right bank catalytic converter. Refer to EM-26, "
Removal and Installation" .
3. Remove the stabilizer assembly. Refer to FSU-16, "
STABILIZER BAR" .
4. Remove the steering gearbox mounting bolts. Refer to PS-19, "
POWER STEERING GEAR AND LINK-
AGE" .
5. Remove the front drive shaft BOTH. Refer to FAX-12, "
FRONT DRIVE SHAFT" .
6. Remove the side shaft assembly.
7. Remove the front propeller shaft. Refer to PR-4, "
FRONT PROPELLER SHAFT" .
8. Remove the front suspension member. Refer to FSU-17, "
FRONT SUSPENSION MEMBER" .
9. Remove the differential breather hose clamp bolt. Refer to FFD-12, "
REMOVAL AND INSTALLATION
(VQ35DE)" .
10. Remove the mounting bolts and front final drive assembly from the vehicle.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
When installing the side shaft, apply multi-purpose grease to contact surface of side shaft and
side shaft oil seal.
After installation, check the final drive oil level. Refer to
SDIA1586E
1. Insulator 2. Engine mounting bracket 3. Breather joint
4. Breather hose 5. Breather tube 6. Propeller shaft
7. Side shaft 8. Front final drive assembly
Page 3046 of 4449

FRONT FINAL DRIVE ASSEMBLY
FFD-11
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FFD
Revision: 2004 November 2004 FX35/FX45
Removal and Installation (VK45DE)ADS000OE
REMOVAL
1. Remove the right bank catalytic converter. Refer to EM-178, "Removal and Installation" .
2. Remove the stabilizer assembly. Refer to FSU-16, "
STABILIZER BAR" .
3. Remove the steering gearbox mounting bolts. Refer to PS-19, "
POWER STEERING GEAR AND LINK-
AGE" .
4. Remove the front drive shaft both. Refer to FAX-12, "
FRONT DRIVE SHAFT" .
5. Remove the side shaft assembly.
6. Remove the front propeller shaft. Refer to PR-4, "
FRONT PROPELLER SHAFT" .
7. Remove the front suspension member. Refer to FSU-17, "
FRONT SUSPENSION MEMBER" .
8. Remove the engine wire harness clamp bolts from front final drive.
9. Remove the differential breather hose clamp bolt. Refer to FFD-13, "
REMOVAL AND INSTALLATION
(VK45DE)" .
10. Remove the mounting bolts and front final drive assembly from the vehicle.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
When installing side shaft, apply multi-purpose grease to contact surface of side shaft and side
shaft oil seal.
After installation, check the final drive oil level. Refer to
SDIA1587E
1. Breather joint 2. Front final drive assembly 3. Side shaft
4. Propeller shaft 5. Breather tube 6. Breather hose
Page 3047 of 4449
FFD-12
FRONT FINAL DRIVE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
Front Final Drive Breather HoseADS000NM
REMOVAL AND INSTALLATION (VQ35DE)
NOTE:
Refer to illustration above for front final drive breather hose routing.
1. Breather hose 2. Breather tube 3. Front final drive assembly
4. Breather tube bracket end 5. Breather pipe bracket 6. Differential case boss
7. Machined face
SDIA1710E
Page 3048 of 4449
FRONT FINAL DRIVE ASSEMBLY
FFD-13
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FFD
Revision: 2004 November 2004 FX35/FX45
REMOVAL AND INSTALLATION (VK45DE)
NOTE:
Refer to illustration above for front final drive breather hose routing.
SDIA1639E
1. Breather tube 2. Front final drive assembly 3. Breather hose