differential INFINITI M35 2007 Factory Workshop Manual

REAR FINAL DRIVE ASSEMBLY
RFD-23
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7. Remove bearing caps.
8. Lift differential case assembly out with a suitable tool.

Keep side bearing outer races together with inner race. Do
not mix them up.
Also, keep side bearing adjusting washers together with bear-
ings.
9. Remove side bearing inner race.
To prevent damage to bearing, engage puller jaws in groove
().
CAUTION:

To prevent damage to the side bearing and drive gear,
place copper plates between these parts and vise.

It is not necessary to remove side bearing inner race
except it is replaced.
S-PD343
PDIA0547E
SPD527
Tool number A: ST33051001 (J-22888-20)
B: ST33061000 (J-8107-2)
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Revision: 2007 April2007 M35/M45
10. For proper reinstallation, paint matching marks on one differen-
tial case assembly.
CAUTION:
For matching marks, use paint. Do not damage differential
case and drive gear.
11. Remove drive gear mounting bolts.
12. Tap drive gear off differential case assembly with a soft hammer.
CAUTION:
Tap evenly all around to keep drive gear from bending.
13. Remove lock pin of pinion mate shaft with a punch from drive
gear side.
14. Remove pinion mate shaft.
15. Turn pinion mate gear, then remove pinion mate gear, pinion
mate thrust washer, side gear and side gear thrust washer from
differential case.
Drive Pinion Assembly
1. Remove differential assembly. Refer to RFD-22, "Differential Assembly" .
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REAR FINAL DRIVE ASSEMBLY
Revision: 2007 April2007 M35/M45
11. 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.
ADJUSTMENT AND SELECTION OF ADJUSTING WASHERS
Differential Side Gear Clearance

Assemble the differential parts if they are disassembled. Refer to RFD-33, "Differential Assembly" .
1. Place differential case straight up so that side gear to be mea-
sured comes upward.
SDIA0817E
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.
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REAR FINAL DRIVE ASSEMBLY
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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 RFD-38,
"Side Gear Thrust Washer" .
CAUTION:
Select a side gear thrust washer for right and left individu-
ally.
Side Bearing Preload

Selecting 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 gear carrier.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.
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Revision: 2007 April2007 M35/M45
4. Install bearing caps in their correct locations and tighten bearing
cap mounting bolts to the specified torque. Refer to RFD-18,
"COMPONENTS" .
5. Turn the carrier several times to seat the bearings.
6. Measure the turning torque of the carrier at the drive gear
mounting bolts with a spring gauge.
7. If the turning torque is outside the specification, use a thicker/
thinner side bearing adjusting washer to adjust. Refer to RFD-
38, "Side Bearing Adjusting Washer" .
CAUTION:
Select a side bearing adjusting washer for right and left
individually.
8. Record the total amount of washer thickness required for the correct carrier side bearing preload.
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.
SDIA1795E
Tool number : — (J-8129)
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
If the turning torque is less than the specified range:
Use a thicker thrust washer.
If the turning torque is greater than the specification:
Use a thinner thrust washer.
SPD772
Tool number : — (J-34309)
SPD769

REAR FINAL DRIVE ASSEMBLY
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12. Select the correct pinion height adjusting washer. Refer to RFD-38, "Pinion Height Adjusting Washer" .
13. Remove the J-34309 differential shim selector tool from the final
drive housing. Then disassemble to retrieve the pinion bearings.
ASSEMBLY
Drive Pinion Assembly
1. Install front bearing outer race (1) and rear bearing outer race
(2) using drifts.
CAUTION:

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

Do not reuse pinion front and rear bearing outer race.
2. Select drive pinion height adjusting washer. Refer to RFD-28,
"Pinion Gear Height" .
Pinion head height numberAdd or remove from the standard pinion height
adjusting 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
Tool number A: ST30720000 (J-25405)
B: KV40105230 ( — )
C: ST30611000 (J-25742-1)
D: ST30613000 (J-25742-3)
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10. Apply anti-corrosion oil to the thread and seat of drive pinion
lock nut, and temporarily tighten drive pinion lock nut to drive
pinion.
CAUTION:
Do not reuse drive pinion lock nut.
11. Adjust to the drive pinion lock nut tightening torque and pinion
bearing preload torque.
CAUTION:

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

If the preload torque exceeds the specified value, replace
collapsible spacer and tighten it again to adjust. Do not
loosen drive pinion lock nut to adjust the preload torque.

After adjustment, rotate drive pinion back and forth 2 to 3
times to check for unusual noise, rotation malfunction,
and other malfunctions.
12. Install differential case assembly. Refer to RFD-33, "
Differential Assembly" .
CAUTION:
Do not install rear cover yet.
13. Check and adjust drive gear runout, tooth contact, drive gear to drive pinion backlash, and companion
flange runout. Refer to RFD-19, "
Drive Gear Runout" , RFD-20, "Tooth Contact" , RFD-21, "Backlash" ,
RFD-22, "
Companion Flange Runout" .
Recheck above items. Readjust the above description, if necessary.
14. Check total preload torque. Refer to RFD-19, "
Total Preload Torque" .
15. Install rear cover. Refer to RFD-33, "
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.Tool number A: ST3127S000 (J-25765-A)
Drive pinion lock nut tightening torque:
147 - 323 N·m (15 - 32 kg-m, 109 - 238 ft-lb)
Drive pinion bearing preload:
2.65 - 3.23 N·m (0.27 - 0.32 kg-m, 24 - 28 in-lb)
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Revision: 2007 April2007 M35/M45
2. Install side gears and thrust washers into differential case.
CAUTION:
Make sure that the circular clip is installed to side gears.
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 RFD-26, "
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 differential case with the mark of
drive gear, then place drive gear.
8. Apply thread locking sealant into the thread hole of drive gear.

Use Genuine High Strength Thread Locking Sealant or
equivalent. Refer to GI-47, "
RECOMMENDED CHEMICAL
PRODUCTS AND SEALANTS" .
CAUTION:
Drive gear back and threaded holes shall be cleaned and
degreased sufficiently.
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REAR FINAL DRIVE ASSEMBLY
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9. Install drive gear on the mounting bolts, and then tighten to the
specified torque. Refer to RFD-18, "
COMPONENTS" .
CAUTION:

Tighten bolts in a crisscross fashion.

After tightening the bolts to the specified torque, tighten
the bolts additionally by turning the bolts 31 to 36
degrees.
10. Press side bearing inner races to differential case, using the drift
and the base.
CAUTION:
Do not reuse side bearing inner race.
11. Install differential case assembly with side bearing outer races
into gear carrier.
12. Measure side bearing preload. If necessary, select the appropri-
ate side bearing adjusting washers. Refer to RFD-27, "
Side
Bearing Preload" .
13. Insert selected left and right side bearing adjusting washers in
place between side bearings and gear carrier.
14. Align matching marks on bearing cap with that on gear carrier.
15. Install bearing caps and tighten bearing cap mounting bolts to
the specified torque. Refer to RFD-18, "
COMPONENTS" .
SDIA0247J
Tool number A: KV38100300 (J-25523)
B: ST33061000 (J-8107-2)
SPD353
SPD527
SPD558
SDIA1795E

SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsNDS000F9
Inspection and AdjustmentNDS000FA
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) Applied modelVQ35DE VK45DE
2WD AWD 2WD
Final drive modelR200
Gear ratio 3.538 3.692 3.357
Number of teeth (Drive gear/Drive pinion) 46/13 48/13 47/14
Oil capacity (Approx.)
(US pt, lmp pt)1.4 (3, 2-1/2)
Number of pinion gears2
Drive pinion adjustment spacer type Collapsible
Item Runout limit
Drive gear back face 0.05 (0.0020)
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 ) 2.65 - 3.23 (0.27 - 0.32, 24 - 28)
Side bearing (P
2 ) 0.20 - 0.52 (0.02 - 0.05, 2 - 4)
Side bearing to pinion bearing (Total preload)
(Total preload = P
1 + P2 )2.84 - 3.75 (0.29 - 0.38, 26 - 33)
Item Specification
Drive gear to drive pinion gear 0.10 - 0.15 (0.0039 - 0.0059)
Item Runout limit
Inner side of the companion flange 0.08 (0.0031)