differential INFINITI FX35 2004 Workshop Manual

RFD-20
REAR FINAL DRIVE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
5. Adjust clearance between rear face of side gear and thrust
washer by selecting side gear thrust washer. Refer to RFD-31,
"AVAILABLE PINION HEIGHT ADJUSTING WASHERS" .
Use two feeler gauges to prevent leaning of side gear as show-
ing figure.
SIDE BEARING PRELOAD
A selection of carrier side bearing adjusting washers is required for successful completion of this procedure.
1. Make sure all parts are clean. Also, make sure the bearings are
well lubricated with gear oil.
2. Place the differential case, with side bearings and bearing races
installed, into gear carrier.
3. Insert left and right original side bearing adjusting washers in
place between side bearings and carrier.
4. Install the side bearing caps in their correct locations and torque
the bearing cap retaining bolts.
5. Turn the carrier several times to seat the bearings.Clearance between side gear thrust washer and dif-
ferential case
: 0.20 mm (0.0079 in) or less
SPD828
SPD527
SPD924
SDIA1795E

REAR FINAL DRIVE ASSEMBLY
RFD-21
C
E
F
G
H
I
J
K
L
MA
B
RFD
Revision: 2004 November 2004 FX35/FX45
6. Measure the turning torque of the carrier at the drive gear retain-
ing bolts with a spring gauge, J-8129.
7. If the turning torque is not within the specifications, correct the
torque as follows:

If the turning torque is less than the specified range, install
washers of greater thickness.

If the turning torque is greater than the specification, install
thinner washers.

See the SDS section for washer dimensions and part num-
bers.
8. Record the total amount of washer thickness required for the
correct carrier side bearing preload.
9. Remove the carrier from the final drive housing. Save the
selected washers for later use during the assembly of the final
drive unit.
PINION GEAR HEIGHT
1. Make sure all parts are clean and that the bearings are well
lubricated.
2. Assemble the pinion gear bearings into the differential shim
selector tool, J34309.

Pinion front bearing; make sure the J34309-3 pinion front bear-
ing seat is secured tightly against the J34309-2 gauge anvil.
Then turn the pinion front bearing pilot, J34309-5, to secure the
bearing in its proper position.

Pinion rear bearing; the pinion rear bearing pilot, J34309-8, is
used to center the pinion rear bearing only. The pinion rear bear-
ing locking seat, J34309-4, is used to lock the bearing to the
assembly.Specification
: 34.2 - 39.2 N (3.5 - 4.0 kg, 7.7 - 8.8 lb)
of pulling force at the drive gear bolt
SPD194A
SPD772
Tool number : HT72400000 ( – )
S-PD344
SPD769
SPD197A

RFD-24
REAR FINAL DRIVE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
4. Correct the pinion height washer size by referring to the “pinion
head number”.
There are two numbers painted on the drive pinion. The first one refers to the drive pinion and drive gear as a
matched set. This number should be the same as the number on the drive gear. The second number is the
“pinion head height number”. It refers to the ideal pinion height from standard for quietest operation. Use the
following chart to determine the correct pinion height washer.
5. Select the correct pinion height adjusting washer as follows. Refer to RFD-31, "
AVAILABLE PINION
HEIGHT ADJUSTING WASHERS" .
6. Remove the J34309 differential shim selector tool from the final
drive housing. Then disassemble to retrieve the pinion bearings.
TOOTH CONTACT
Checking gear tooth contact pattern is necessary to verify correct relationship between drive gear and drive
pinion.
Hypoid gears which are not positioned in proper arrangement may be noisy and/or have a short life. Check
gear tooth contact pattern to obtain the best contact for low noise and long life.
SPD542
Pinion head height numberAdd or remove from the standard
pinion height washer thickness measurement
- 6
- 5
- 4
- 3
- 2
- 1
0
+1
+2
+3
+4
+5
+6Add 0.06 mm (0.0024 in)
Add 0.05 mm (0.0020 in)
Add 0.04 mm (0.0016 in)
Add 0.03 mm (0.0012 in)
Add 0.02 mm (0.0008 in)
Add 0.01 mm (0.0004 in)
Use the selected washer thickness
Subtract 0.01 mm (0.0004 in)
Subtract 0.02 mm (0.0008 in)
Subtract 0.03 mm (0.0012 in)
Subtract 0.04 mm (0.0016 in)
Subtract 0.05 mm (0.0020 in)
Subtract 0.06 mm (0.0024 in)
SPD205A

REAR FINAL DRIVE ASSEMBLY
RFD-25
C
E
F
G
H
I
J
K
L
MA
B
RFD
Revision: 2004 November 2004 FX35/FX45
1. Thoroughly clean drive gear and drive pinion teeth.
2. 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.
3. Hold companion flange steady by hand and rotate the drive gear
in both directions.
ASSEMBLY OF DIFFERENTIAL CASE ASSEMBLY
1. Install pinion mate shaft lock pin with a punch.
Make sure lock pin is flush with case.
CAUTION:
Do not reuse the lock pin. Always replace the lock pin with
a new one.
SPD357
SDIA0813E
SDIA1796E
SPD030

RFD-26
REAR FINAL DRIVE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
2. Place differential case on drive gear.
3. Apply genuine medium strength locking sealant or equivalent.
Refer to GI-48, "
RECOMMENDED CHEMICAL PRODUCTS
AND SEALANTS" to drive gear bolts, and install them.
CAUTION:
Do not reuse the bolts. Always replace the bolts with a new
one.

Tighten bolts in a crisscross fashion.

After tightening the bolt to the specified torque, turn the bolt
31 to 36 more degrees.
4. Press-fit side bearing inner race on differential case with tool.
INSTALLATION OF DRIVE PINION ASSEMBLY
1. Press-fit front and rear bearing outer races with tools.
2. Select drive pinion height adjusting washer. Refer to RFD-31, "
AVAILABLE PINION HEIGHT ADJUSTING
WASHERS"
SPD554
Tool number A : KV38100300 (J25523)
B : ST33061000 (J8107-2)
SPD353
Tool number A : Suitable tool
B : ST30611000 (J25742-1)
C : ST30613000 (J25742-3)
SPD992

REAR FINAL DRIVE ASSEMBLY
RFD-27
C
E
F
G
H
I
J
K
L
MA
B
RFD
Revision: 2004 November 2004 FX35/FX45
3. Install selected drive pinion height adjusting washer in drive pin-
ion. Using hydraulic press and tool, press-fit pinion rear bearing
inner race into it.
4. Apply multi-purpose grease to pinion rear bearing inner race
and pinion front bearing inner race.
5. Set drive pinion assembly (as shown in figure) in differential car-
rier and install drive pinion, with press and suitable tool.
Stop when drive pinion touches bearing.
6. Install front oil seal with tool. Refer to RFD-7, "
Removal and Installation" .
7. Install companion flange, and tighten drive pinion lock nut to
minimum.
Ascertain that threaded portion of drive pinion and drive pinion
lock nut are free from oil.
CAUTION:
The drive pinion lock nut is not reusable. Never reuse drive
pinion lock nut.Tool number : ST30901000 ( – )
SPD377
SDIA1797E
SPD896
Tool number : ST30720000 (J25405)
Tool number : KV40104000 ( – )
SDIA1011E

RFD-28
REAR FINAL DRIVE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
8. Tighten the drive pinion lock nut by very small degrees until the
specified preload in achieved, when checking the preload, turn
drive pinion in both directions several times.

If pinion bearing preload is too small, tighten the drive pinion lock nut more.

If pinion bearing preload is too great, replace pinion bearing adjusting spacer.
INSTALLATION OF DIFFERENTIAL CASE ASSEMBLY
1. Select side bearing adjusting washer.
Refer to RFD-32, "
SIDE BEARING ADJUSTING WASHERS" .
2. Install differential case assembly with side bearing outer races
into gear carrier.
3. Insert original left and right side bearing adjusting washers in
place between side bearings and carrier.
4. Align matching mark on bearing cap with that on gear carrier.
5. Install the side bearing cap.
6. Install side oil seal. Refer to RFD-9, "
Removal and Installation" . Tool number
: ST3127S000 (J25765-A)
Drive pinion bearing preload
: 2.65 - 3.23 N·m (0.27 - 0.32 kg-m, 24 - 28 in-lb)
SDIA1007E
SPD919
SPD924
SPD889
Tool number : KV38100200 (J26233)

REAR FINAL DRIVE ASSEMBLY
RFD-29
C
E
F
G
H
I
J
K
L
MA
B
RFD
Revision: 2004 November 2004 FX35/FX45
7. Measure drive gear-to-drive pinion backlash with a dial indicator
at several point.

It backlash is too small, adjustment of washer thickness is required. Decrease thickness of left shim
and increase thickness of right by the same amount.
If backlash is too great, reverse the above procedure.

Never change the total amount of washers as it will change the bearing preload.
8. Check total preload with tool.
When checking preload, turn drive pinion in both directions several times to seat bearing rollers correctly.

If preload is too great, remove the same amount of washer to each side.

If preload is too small, add the same amount of washer to each side.
Never add or remove a different number of washers for each side. Difference in number of washers will
change drive gear to drive pinion backlash.
9. Recheck drive gear to drive pinion backlash. Increase or decrease in thickness of shims will cause
change to drive gear to pinion backlash.

Check whether the backlash varies excessively in different places. Foreign matter may be caught
between the drive gear and the differential case causing the trouble.

The backlash can vary greatly even when the drive gear runout is within a specified range. In that case,
replace the hypoid gear set or differential case.
10. Check runout of drive gear with a dial indicator.
11. Check tooth contact.
Refer to RFD-24, "
TOOTH CONTACT" . Drive gear to drive pinion backlash
: 0.10 - 0.15 mm (0.0039 - 0.0059 in)
SPD513
Tool number : ST3127S000 (J25765-A)
SDIA1007E
Total preload : 2.84 - 3.75 N·m (0.29 - 0.38 kg-m, 26 - 33 in-lb)
Drive gear runout limit : 0.05 mm (0.0020 in) or less
SPD524

SERVICE DATA AND SPECIFICATIONS (SDS)
RFD-31
C
E
F
G
H
I
J
K
L
MA
B
RFD
Revision: 2004 November 2004 FX35/FX45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsADS000JV
Drive Gear RunoutADS000JW
Unit: mm (in)
Side Gear Adjustment ADS000JX
Unit: mm (in)
AVAILABLE SIDE GEAR THRUST WASHERS
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Drive Pinion Height AdjustmentADS000JY
AVAILABLE PINION HEIGHT ADJUSTING WASHERS
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Drive Pinion Preload AdjustmentADS000JZ
Applied modelVQ35DE engine VK45DE engine
5A/T
Final drive model R200 (2-pinion)
Gear ratio 3.357 (2WD), 3.692 (AWD) 3.692
Number of teeth (Drive gear/drive pinion) 47/14 (2WD), 48/13 (AWD) 48/13
Oil capacity (Approx.) (US qt, lmp qt)1.4 (3, 2-1/2) 1.4 (3, 2-1/2)
Type R200
Drive gear runout limit 0.05 (0.0020) or less
Type R200
Clearance limit between side gear thrust washer and differential
case mm (in)0.20 (0.0079) less
Type R20 0
Thrust washerThickness Part number*
0.75 (0.0295) 38424 0C000
0.78 (0.0307) 38424 0C001
0.81 (0.0319) 38424 0C002
0.84 (0.0331) 38424 0C003
0.87 (0.0343) 38424 0C004
0.90 (0.0350) 38424 0C005
0.93 (0.0366) 38424 0C006
Type R200
Adjusting washerThickness Part number* Thickness Part number*
3.05 (0.1201) 38154 0C000 3.17 (0.1248) 38154 0C004
3.08 (0.1213) 38154 0C001 3.20 (0.1260) 38154 0C005
3.11 (0.1224) 38154 0C002 3.23 (0.1272) 38154 0C006
3.14 (0.1236) 38154 0C003 3.26 (0.1283) 38154 0C007
Type R200
Drive pinion preload 2.65 − 3.23 N·m (0.27 − 0.32 kg−m, 24 − 28 in-lb)

RSU-4
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: 2004 November 2004 FX35/FX45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartAES000MI
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
RSU-7RSU-9—
—
—
RSU-7RSU-5RSU-16
NVH in PR section
NVH in RFD section
NVH in FAX and FSU 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
Shock absorber deformation, damage or deflection
Bushing or mounting deterioration
Parts interference
Spring fatigue
Suspension looseness
Incorrect wheel alignment
Stabilizer bar fatigue
PROPELLER SHAFT
DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom REAR SUSPENSIONNoise×××××× ××××××××
Shake×××× × × ××××××
Vibration××××× × ×× × ×
Shimmy×××× × ××× ××
Judder ××× ××× ××
Poor quality ride or
handling××××× ×× ×××