2005 INFINITI FX35 oil

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

REAR FINAL DRIVE ASSEMBLY RFD-21
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Revision: 2005 July 2005 FX
DISASSEMBLY
Differential Assembly
1. Drain gear oil, if necessary.
2. Remove side flange.
3. Remove rear cover mounting bolts.
4. Remove rear cover to insert the seal cutter between gear carrier and rear cover.
CAUTION:

Be careful not to damage the mating surface.

Do not insert flat-bladed screwdriver, this way damage
the mating surface.
5. Using two 45 mm (1.77 in) spacers, mount carrier on the attach- ment.
6. For proper reinstallation, paint matching marks on one side of the bearing cap.
CAUTION:

For matching mark, use paint. Do not damage bearing
caps and gear carrier.

Bearing caps are line-board during manufacture. The
matching marks are used to reinstall them in their origi-
nal positions.
7. Remove bearing caps. Tool number : KV10111100 (J-37228)
PDIA0491E
Tool number : KV38100800 (J-25604-01)
SDIA1008E
SDIA1795E
S-PD343

RFD-24
REAR FINAL DRIVE ASSEMBLY
Revision: 2005 July 2005 FX
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.
5. Press drive pinion assembly out of gear carrier. CAUTION:
Do not drop drive pinion assembly.
6. Remove front oil seal.
7. Remove side oil seal.
8. Remove pinion front bearing inner race.
9. Remove collapsible spacer.
10. Remove pinion rear bearing inner race and drive pinion height adjusting washer with the replacer.
11. Tap pinion front/rear bearing outer races uniformly a brass rod or equivalent to removed.
CAUTION:
Be careful not to damage gear carrier.
PDIA0478E
SDIA1129E
SPD892
Tool number : ST30031000 (J-22912-01)
S-PD179
SDIA0817E

REAR FINAL DRIVE ASSEMBLY RFD-25
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Revision: 2005 July 2005 FX
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-32, "Differential Assembly" .
1. Place differential case straight up so that side gear to be mea- sured comes upward.
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.
PDIA0460E

RFD-26
REAR FINAL DRIVE ASSEMBLY
Revision: 2005 July 2005 FX
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-36,
"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.
PDIA0576E
SPD527
SPD558

REAR FINAL DRIVE ASSEMBLY RFD-31
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Revision: 2005 July 2005 FX
3. Install selected drive pinion height adjusting washer to drive pin-
ion. Press pinion rear bearing inner race to it, using drift.
CAUTION:

Pay attention to the direction of pinion height adjusting
washer. (Assemble as shown in the figure.)

Do not reuse pinion rear bearing inner race.
4. Assemble collapsible spacer to drive pinion. CAUTION:
Do not reuse collapsible spacer.
5. Apply gear oil to pinion rear bearing, and assemble drive pinion into gear carrier.
6. Apply gear oil to pinion front bearing, and assemble pinion front bearing inner race to drive pinion assembly.
CAUTION:
Do not reuse pinion front bearing inner race.
7. Using suitable spacer, press the pinion front bearing inner race to drive pinon as far as drive pinion nut can be tightened.
8. Using the drift, install front oil seal as shown in figure. CAUTION:

Do not reuse oil seal.

When installing, do not incline oil seal.

Apply multi-purpose grease onto oil seal lips, and gear
oil onto the circumference of oil seal.
9. 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. Tool number : ST30901000 (J-26010-01)
SDIA0048E
PDIA0492E
SPD896
Tool number : ST30720000 (J-25405)
PDIA0563E
PDIA0478E

RFD-32
REAR FINAL DRIVE ASSEMBLY
Revision: 2005 July 2005 FX
10. Apply gear 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-32, "
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-17, "
Drive Gear Runout" , RFD-18, "Tooth Contact" , RFD-19, "Backlash" ,
RFD-20, "
Companion Flange Runout" .
Recheck above items. Readjust the above description, if necessary.
14. Check total preload torque. Refer to RFD-17, "
Total Preload Torque" .
15. Install rear cover. Refer to RFD-32, "
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.
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. Tool number A: KV40104000 ( — )
B: 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)
PDIA0548E
SDIA0193J
SDIA2025E

RFD-34
REAR FINAL DRIVE ASSEMBLY
Revision: 2005 July 2005 FX
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-26, "
Side
Bearing Preload" .
13. Insert selected left and right side bearing adjusting washers in place between side bearings and gear carrier.
14. Align matching mark 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-16, "
COMPONENTS" .
16. Using the drift, drive side oil seals until it becomes flush with the case end.
CAUTION:

Do not reuse oil seal.

When installing, do not incline oil seal.

Apply multi-purpose grease onto oil seal lips, and gear
oil onto the circumference of oil seal.
17. Check and adjust drive gear runout, tooth contact, drive gear to drive pinion backlash, and total preload torque. Refer to RFD-
Tool number A: KV38100300 (J-25523)
B: ST33061000 (J-8107-2)
SPD353
SPD527
SPD558
SDIA1795E
Tool number : KV38100200 (J-26233)
SPD560