Infiniti FX35, FX50 (S51). Manual - part 590

FRONT OIL SEAL

DLN-195

< REMOVAL AND INSTALLATION >

[REAR FINAL DRIVE: R200]

DLN

Measure the total preload with the preload gauge (A) [SST:
ST3127S000 (J-25765-A)].
NOTE:
Record the preload measurement.

Put matching mark (B) on the end of the drive pinion. The
matching mark (B) should be in line with the matching mark (A)
on companion flange (1).

CAUTION:

For matching mark, use paint. Never damage companion
flange and drive pinion.
NOTE:
The matching mark (A) on the final drive companion flange (1)
indicates the maximum vertical runout position.

10. Remove drive pinion lock nut using the flange wrench.

11. Remove companion flange using pullers.

12. Remove front oil seal using the puller (A) [SST: KV381054S0 (J-

34286)].

JSDIA0015ZZ

JSDIA0016ZZ

JSDIA0021ZZ

JSDIA0022ZZ

PDIA0980E

DLN-196

< REMOVAL AND INSTALLATION >

[REAR FINAL DRIVE: R200]

FRONT OIL SEAL

INSTALLATION

Apply multi-purpose grease to front oil seal lips.

Install front oil seal using the drift (A) [SST: ST30720000 (J-
25405)] as shown in figure.

CAUTION:

• Never reuse oil seal.
• Never incline oil seal when installing.

Align the matching mark (B) of drive pinion with the matching
mark (A) of companion flange (1), and then install the compan-
ion flange (1).

Apply anti-corrosion oil to the thread and seat of new drive pin-
ion lock nut, and temporarily tighten drive pinion lock nut to drive
pinion.

CAUTION:

Never reuse drive pinion lock nut.

Tighten drive pinion lock nut within the limits of specified torque
so as to keep the pinion bearing preload within a standard val-
ues.

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. Never
loosen drive pinion lock nut to adjust the preload torque.

PDIA0752J

JSDIA0016ZZ

: Preload gauge [SST: ST3127S000 (J-25765-A)]

Standard

Total preload torque

: A value that add 0.1 – 0.4
N·m (0.01 – 0.04 kg-m, 0.1 –
0.3 in-lb) to the measured
value before removing.

JSDIA0023ZZ

FRONT OIL SEAL

DLN-197

< REMOVAL AND INSTALLATION >

[REAR FINAL DRIVE: R200]

DLN

Set a dial indicator (A) vertically to the tip of the drive pinion.

Rotate drive pinion to check for runout.

• If the runout value is still outside of the limit after the phase

has been changed, possible causes are an assembly malfunc-
tion of drive pinion and pinion bearing and malfunction of pin-
ion bearing. Check for these items and repair if necessary.

Make a stamping for identification of front oil seal replacement
frequency. Refer to “Identification stamp of replacement frequency of front oil seal”.

CAUTION:

Make a stamping after replacing front oil seal.

Install rear propeller shaft. Refer to

DLN-118, "Exploded View"

10. Install side flange with the following procedure.
a.

Attach the protector [SST: KV38107900 (J-39352)] to side oil
seal.

After the side flange is inserted and the serrated part of side
gear has engaged the serrated part of flange, remove the pro-
tector.

Put a suitable drift on the center of side flange, then drive it until
sound changes.
NOTE:
When installation is completed, driving sound of the side flange
turns into a sound that seems to affect the whole final drive.

Confirm that the dimension of the side flange (1) installation
measurement (A) in the figure comes into the following.

11. Install drive shaft. Refer to

RAX-10, "Exploded View"

12. Install rear wheel sensor. Refer to

BRC-132, "REAR WHEEL

SENSOR : Exploded View"

13. Install center muffler. Refer to

EX-5, "Exploded View"

14. Refill gear oil to the final drive and check oil level. Refer to

DLN-

192, "Refilling"

15. Check the final drive for oil leakage. Refer to

DLN-192, "Inspection"

AWD

Limit

Drive pinion runout

: Refer to

DLN-256, "Drive

Pinion Runout (2WD)"

JSDIA0043ZZ

SDIA0822E

Standard

: 326 – 328 mm (12.83 – 12.91 in)

JSDIA0106ZZ

DLN-198

< REMOVAL AND INSTALLATION >

[REAR FINAL DRIVE: R200]

FRONT OIL SEAL

AWD : Exploded View

INFOID:0000000005249227

AWD : Removal and Installation

INFOID:0000000005249228

REMOVAL

CAUTION:

Verify identification stamp of replacement frequency put in the lower part of gear carrier to determine
replacement for collapsible spacer when replacing front oil seal. Refer to “Identification stamp of
replacement frequency of front oil seal”. If collapsible spacer replacement is necessary, remove final
drive assembly and disassemble it to replace front oil seal and collapsible spacer. Refer to

DLN-209,

"AWD : Removal and Installation"

and

DLN-225, "AWD : Disassembly"

NOTE:
The reuse of collapsible spacer is prohibited in principle. However, it is reusable on a one-time basis
only in cases when replacing front oil seal.

Identification stamp of replacement frequency of front oil seal

• The diagonally shaded area in the figure shows stamping point for

replacement frequency of front oil seal.

• The following table shows if collapsible spacer replacement is

needed before replacing front oil seal.
When collapsible spacer replacement is required, disassemble
final drive assembly to replace collapsible spacer and front oil seal.
Refer to

DLN-225, "AWD : Disassembly"

CAUTION:

Make a stamping after replacing front oil seal.

Final drive assembly

Front oil seal

Companion flange

Drive pinion lock nut

Oil seal lip

: Vehivle front

: Apply gear oil.

: Apply anti-corrosion oil.

Refer to