differential INFINITI FX35 2005 Workshop Manual

RFD-1
REAR FINAL DRIVE
D DRIVELINE/AXLE
CONTENTS
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SECTION RFD
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RFD
Revision: 2005 July 2005 FX
REAR FINAL DRIVE
PRECAUTIONS .......................................................... 2
Service Notice or Precautions ............................. ..... 2
PREPARATION ...................................................... ..... 3
Special Service Tools .......................................... ..... 3
Commercial Service Tools ................................... ..... 6
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ..... 7
NVH Troubleshooting Chart ................................ ..... 7
DESCRIPTION ....................................................... ..... 8
Cross-Sectional View .......................................... ..... 8
DIFFERENTIAL GEAR OIL ................................... ..... 9
Changing Differential Gear Oil ............................ ..... 9
DRAINING ........................................................ ..... 9
FILLING ............................................................ ..... 9
Checking Differential Gear Oil ............................. ..... 9
OIL LEAKAGE AND OIL LEVEL ...................... ..... 9
FRONT OIL SEAL ................................................. ... 10
Removal and Installation ..................................... ... 10
REMOVAL ........................................................ ... 10
INSTALLATION ................................................ .... 11
SIDE OIL SEAL ..................................................... ... 12
Removal and Installation ..................................... ... 12
REMOVAL ........................................................ ... 12
INSTALLATION ................................................ ... 12 REAR FINAL DRIVE ASSEMBLY .........................
... 14
Removal and Installation ..................................... ... 14
COMPONENTS ................................................ ... 14
REMOVAL ........................................................ ... 14
INSTALLATION ................................................ ... 15
Disassembly and Assembly ................................. ... 16
COMPONENTS ................................................ ... 16
ASSEMBLY INSPECTION AND ADJUSTMENT ... 17
DISASSEMBLY ................................................ ... 21
INSPECTION AFTER DISASSEMBLY ............. ... 25
ADJUSTMENT AND SELECTION OF ADJUST-
ING WASHERS ................................................ ... 25
ASSEMBLY ...................................................... ... 30
SERVICE DATA AND SPECIFICATIONS (SDS) ... ... 36
General Specifications ......................................... ... 36
Inspection and Adjustment .................................. ... 36
DRIVE GEAR RUNOUT ................................... ... 36
DIFFERENTIAL SIDE GEAR CLEARANCE .... ... 36
PRELOAD TORQUE ........................................ ... 36
BACKLASH ...................................................... ... 36
COMPANION FLANGE RUNOUT .................... ... 36
SELECTIVE PARTS ......................................... ... 36

RFD-4
PREPARATION
Revision: 2005 July 2005 FX
KV38107900
(J-39352)
Protector Installing side flange
KV38100800
(J-25604-01)
Attachment
a: 541 mm (21.30 in)
b: 200 mm (7.87 in) Fixing unit assembly
ST3127S000
(J-25765-A)
Preload gauge
1: GG91030000 (J-25765)
Torque wrench
2: HT62940000 (—)
Socket adapter (1/2 ″)
3: HT62900000 (—)
Socket adapter (3/8 ″) Measuring pinion bearing preload and total
preload
K V 1 0 1111 0 0
(J-37228)
Seal cutter Removing rear cover
ST3306S001
(J-22888-D)
Differential side bearing puller set
1: ST33051001 (J-22888-20)
Puller
2: ST33061000 (J-8107-2)
Base
a: 28.5 mm (1.122 in) dia.
b: 38 mm (1.50 in) dia. Removing and installing side bearing inner
race
ST30031000
(J-22912-01)
Replacer Removing pinion rear bearing inner race
Tool number
(Kent-Moore No.)
Tool name Description
S-NT129
SDIA0267E
NT124
S-NT046
NT072
ZZA0700D

RFD-6
PREPARATION
Revision: 2005 July 2005 FX
Commercial Service ToolsADS001AH
(J-34309)
Differential shim selector tool Adjusting bearing preload and pinion gear
height
(J-25269-4)
Side bearing disc (2 Req'd) Selecting pinion height adjusting washer
Tool number
(Kent-Moore No.)
Tool name Description
NT134
NT136
Tool name
Description
Spacer
a: 60 mm (2.36 in) dia.
b: 36 mm (1.42 in) dia.
c: 30 mm (1.18 in) Installing pinion front bearing inner race
Power tool Loosening nuts and bolts
ZZA1133D
PBIC0190E

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING RFD-7
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Revision: 2005 July 2005 FX
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartADS001AI
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable Reference page
Refer to
RFD-25, "
INSPECTION AFTER DISASSEMBLY
" .
Refer to RFD-18, "
Tooth Contact
" .
Refer to RFD-25, "
INSPECTION AFTER DISASSEMBLY
" .
Refer to RFD-19, "
Backlash
" .
Refer to RFD-20, "
Companion Flange Runout
" .
Refer to RFD-9, "
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 and RAX section.
NVH in BR section.
NVH in PS section.
Possible cause and SUSPECTED PARTS
Gear tooth rough
Gear contact improper
Tooth surfaces worn
Backlash incorrect
Companion flange excessive runout
Gear oil improper
PROPELLER SHAFT
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom Noise ×××××××××××××

RFD-8
DESCRIPTION
Revision: 2005 July 2005 FX
DESCRIPTIONPFP:00000
Cross-Sectional ViewADS001AJ
1. Side flange 2. Pinion mate gear 3. Drive gear
4. Pinion mate shaft 5. Differential case 6. Side bearing
7. Drive pinion 8. Pinion front bearing 9. Companion flange
10. Collapsible spacer 11. Pinion rear bearing 12. Side gear
PDIA0476E

DIFFERENTIAL GEAR OIL RFD-9
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Revision: 2005 July 2005 FX
DIFFERENTIAL GEAR OILPFP:KLD30
Changing Differential Gear OilADS001AK
DRAINING
1. Stop engine.
2. Remove drain plug and drain gear oil.
3. Set a gasket on drain plug and install it to final drive assembly and tighten to the specified torque. Refer to RFD-16, "
COMPO-
NENTS" .
CAUTION:
Do not reuse gasket.
FILLING
1. Remove filler plug. Fill with new gear oil until oil level reaches
the specified level near filler plug mounting hole.
2. After refilling oil, check oil level. Set a gasket to filler plug, then install it to final drive assembly. Refer to RFD-16, "
COMPO-
NENTS" .
CAUTION:
Do not reuse gasket.
Checking Differential Gear OilADS001AL
OIL LEAKAGE AND OIL LEVEL

Make sure that oil is not leaking from final drive assembly or around it.

Check oil level from filler plug mounting hole as shown in the fig-
ure.
CAUTION:
Do not start engine while checking oil level.

Set a gasket on filler plug and install it on final drive assembly.
Refer to RFD-16, "
COMPONENTS" .
CAUTION:
Do not reuse gasket.
PDIA0493E
Oil grade and Viscosity:
Refer to MA-12, "
Fluids and Lubricants" .
Oil capacity:
Approx. 1.4 (3 US pt, 2-1/2 Imp pt)
PDIA0494E
PDIA0494E

REAR FINAL DRIVE ASSEMBLY RFD-15
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RFD
Revision: 2005 July 2005 FX
7. Set a suitable jack to rear final drive assembly.
CAUTION:
Do not place a suitable jack on the rear cover (aluminum
case).
8. Remove the mounting bolts and nuts connecting to the suspen- sion member, and remove rear final drive assembly.
CAUTION:
Secure rear final drive assembly to a suitable jack while
removing it.
INSTALLATION
Note the following, and installation is in the reverse order of removal.

Refer to RFD-14, "COMPONENTS" about each tightening torque.

When installing breather hoses, refer to the figure.
CAUTION:
Make sure there are no pinched or restricted areas on the
breather hose caused by bending or winding when install-
ing it.
–For installation, the vehicle side end shall be inserted to suspen-
tion member. Install metal connector side of this hose to rear
cover by inserting it with aiming painted marking to the front of
vehicle.

When oil leaks while removing final drive assembly, check oil
level after the installation. Refer to RFD-9, "
Checking Differential
Gear Oil" .
SDIA1969J
SDIA1970J
PDIA0633E

RFD-16
REAR FINAL DRIVE ASSEMBLY
Revision: 2005 July 2005 FX
Disassembly and AssemblyADS001AP
COMPONENTS
1. Drive pinion lock nut 2. Companion flange 3. Front oil seal
4. Pinion front bearing 5. Gear carrier 6. Side oil seal
7. Side flange 8. Collapsible spacer 9. Pinion rear bearing
10. Pinion height adjusting washer 11. Drive pinion 12. Side bearing adjusting washer
13. Side bearing 14. Side gear thrust washer 15. Circular clip
16. Side gear 17. Lock pin 18. Pinion mate gear
19. Pinion mate thrust washer 20. Pinion mate shaft 21. Drive gear
22. Differential case 23. Bearing cap 24. Filler plug
25. Gasket 26. Rear cover 27. Drain plug
PDIA0485E

REAR FINAL DRIVE ASSEMBLY RFD-17
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Revision: 2005 July 2005 FX
ASSEMBLY INSPECTION AND ADJUSTMENT

Before inspection and adjustment, drain gear oil.
Total Preload Torque
1. Secure final drive assembly onto an attachment.
2. Remove side flanges.
3. Rotate drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.
4. Rotate drive pinion at least 20 times to check for smooth opera- tion of the bearing.
5. Measure total preload with the preload gauge.
NOTE:
Total preload torque = Pinion bearing torque + Side bearing
torque

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 bearing preload.
Drive Gear Runout
1. Remove rear cover. Refer to RFD-21, "Differential Assembly" .
2. Fit a dial indicator to the drive gear back face.
3. Rotate the drive gear to measure runout.

If the runout is outside of the repair limit, check drive gear
assembly condition; foreign material may be caught between
drive gear and differential case, or differential case or drive gear
may be deformed, etc.
CAUTION:
Replace drive gear and drive pinion gear as a set. Tool number : KV38100800 (J-25604-01)
Tool number : ST3127S000 (J-25765-A)
Total preload torque (With oil seal): 2.85 - 3.75 N·m (0.29 - 0.38 kg-m, 26 - 33 in-lb)
SDIA1007E
When the preload torque is large On pinion bearings: Replace the collapsible spacer.
On side bearings: Use thinner side bearing adjusting washers by the same amount to each side. Refer to RFD-37, "
Side Bearing Adjusting Washer" .
When the preload is small On pinion bearings: Tighten the drive pinion nut.
On side bearings: Use thicker side bearing adjusting washers by the same amount to each side. Refer to RFD-37, "
Side Bearing Adjusting Washer" .
Runout limit: 0.05 mm (0.0020 in) or less
SPD886

RFD-18
REAR FINAL DRIVE ASSEMBLY
Revision: 2005 July 2005 FX
Tooth Contact
1. Remove rear cover. Refer to RFD-21, "Differential Assembly" .
2. Apply red lead to drive gear. CAUTION:
Apply red lead to both the faces of 3 to 4 gears at 4 loca-
tions evenly spaced on drive gear.
3. 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.
SPD357
SDIA0570E
SDIA0207E