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Nissan Murano Z50 (2003 year). Manual - part 258

RFD-8

FRONT OIL SEAL

Revision; 2004 April

2003 Murano

INSTALLATION

Apply multi-purpose grease to sealing lips of oil seal. Press front
oil seal into carrier with tool.

CAUTION:

●

When installing the oil seal, be careful not to get it
inclined.

●

Discard the old oil seal. Always replace with new one.

Align the matching mark of drive pinion with the matching mark
B of companion flange, then install the companion flange.

Apply oil or grease on the screw part of drive pinion and the seating surface of companion flange nut.

Install companion flange nut with tool.

CAUTION:

The companion flange nut is not reusable. Never reuse companion flange nut.

Install propeller shaft. Refer to

PR-4, "REAR PROPELLER SHAFT"

Tool number

A: KV38100200 (J26233)

B: ST27861000 ( – )

PDIA0038E

PDIA0034E

Tool number

: KV38108300 ( – )

: 128.5 - 152 N·m (14 - 15 kg-m, 95 - 112 ft-lb)

SIDE OIL SEAL

RFD-9

RFD

Revision; 2004 April

2003 Murano

SIDE OIL SEAL

PFP:38343

Removal and Installation

ADS000EI

REMOVAL

Remove rear wheel sensor.Refer to

BRC-64, "WHEEL SENSORS"

Remove rear axle assembly. Refer to

RAX-5, "WHEEL HUB"

Remove rear drive shaft. Refer to

RAX-7, "REAR DRIVE SHAFT"

Using flat tip screwdriver as shown in the figure, remove side oil
seal.

INSTALLATION

Apply multi-purpose grease to sealing lips of oil seal.

Using the drift, press-fit oil seal so that its surface comes face to
face with the end surface of the case.

CAUTION:

●

When installing the oil seal be careful not to get it
inclined.

●

Discard the old oil seal. Always replace with new one.

Install rear drive shaft. Refer to

RAX-7, "REAR DRIVE SHAFT"

Install rear axle assembly. Refer to

RAX-5, "WHEEL HUB"

PDIA0010E

Tool number

A: KV38100200 (J26233)

B: ST27861000 ( – )

PDIA0008E

RFD-10

REAR FINAL DRIVE ASSEMBLY

Revision; 2004 April

2003 Murano

REAR FINAL DRIVE ASSEMBLY

PFP:38300

Removal and Installation

ADS000EK

REMOVAL

Remove rear propeller shaft. Refer to

PR-4, "REMOVAL"

Remove rear stabilizer mounting bracket with power tool. Refer to

RSU-16, "STABILIZER BAR"

Remove wheel sensor. Refer to

BRC-64, "WHEEL SENSORS"

Remove rear drive shaft. Refer to

RAX-7, "REAR DRIVE SHAFT"

Remove electric controlled coupling connector.

Remove electric controlled coupling breather hose and rear final drive breather hose. Refer to

RFD-11,

"Electric Controlled Coupling Breather Hose"

RFD-12, "Rear Final Drive Breather Hose"

Remove canister. Refer to

EC-652, "EVAPORATIVE EMISSION SYSTEM"

Set Transmission Jack to rear final drive assembly, and then
remove nuts from rear suspension member with power tool.

CAUTION:

Do not place a transmission jack on the rear cover (alumi-
num case).

PDIA0041E

Final drive mount bracket

Rear propeller shaft

Rear final drive assembly

PDIA0039E

REAR FINAL DRIVE ASSEMBLY

RFD-11

RFD

Revision; 2004 April

2003 Murano

Remove bolt and nut of final drive mount bracket, and then
remove rear final drive assembly from vehicle with power tool.

INSTALLATION

●

Install in the reverse order of the removal.

●

Supporting rear final drive assembly securely with transmission jack, install it to final drive mount bracket
and rear suspension member with bolt and nut.

CAUTION:

After installation, check the final drive oil level. Refer to

MA-25, "Changing Differential Gear Oil"

Electric Controlled Coupling Breather Hose

ADS000EL

CAUTION:

●

Refer to the figure for removal and installation procedure of the electric controlled coupling
breather hose.

●

When installing the electric controlled coupling breather hose, be careful not to damage or
sharply bend the hose. Otherwise, the hose may be pinched or restricted.

PDIA0040E

PDIA0024E

RFD-12

REAR FINAL DRIVE ASSEMBLY

Revision; 2004 April

2003 Murano

Rear Final Drive Breather Hose

ADS000EM

CAUTION:

●

Refer to the figure for removal and installation of rear final drive breather hose.

●

When installing the rear final drive breather hose, be careful not to damage or sharply bend the
hose. Otherwise, the hose may be pinched or restricted.

PDIA0025E

REAR FINAL DRIVE ASSEMBLY

RFD-13

RFD

Revision; 2004 April

2003 Murano

Components

ADS000EN

PDIA0043E

RFD-14

REAR FINAL DRIVE ASSEMBLY

Revision; 2004 April

2003 Murano

Pre-Inspection

ADS000EO

TOTAL PRELOAD

Drain the oil.

Remove electric controlled coupling assembly. Refer to

RFD-20, "Removal of Electric Controlled Coupling

Assembly"

Rotate the drive pinion back and forth in 2 to 3 times to check for unusual noise and rotation malfunction.

Rotate the drive pinion at least 20 times to check for smooth
operation of the bearing.

Fit the drive pinion socket onto the drive pinion spline. Using a
preload gauge, measure the total preload.

●

If outside the standard, disassemble, check, and adjust each
part. Adjust the pinion bearing and side bearing preload.
Adjust the pinion bearing preload first, then adjust the side bearing preload.

Side bearing adjusting shims

Drive pinion

Pinion rear bearing inner race

Pinion rear bearing outer race

Collapsible spacer

Gear carrier

Pinion front bearing outer race

Pinion front bearing inner race

Drive pinion nut

Electric controlled coupling connec-
tor

10.

Electric controlled coupling connec-
tor bracket

11.

Drive pinion adjusting shim

12. Companion flange lock nut

13. Companion flange

14. Front oil seal

15. Reamer bolt (2 set)

16. Coupling cover

17. Coupling front bearing

18. Bearing shim

19. Electric controlled coupling

20. Center oil seal

21. Pinion mate shaft

22. Pinion mate thrust washer

23. Pinion mate gear

24. Lock pin

25. Side gear thrust washer

26. Side gear

27. Ring gear

28. Side bearing inner race

29. Side oil seal

30. Side bearing adjusting shim

31. Side bearing outer race

32. Ring gear bolt (8 set)

33. Differential case

34. Rear cover

35. Gasket

36. Drain plug

37. Filler plug

Tool number

A: ST3127S000 (J25765-A)

B: KV38108500 ( – )

Total preload

:1.33 - 2.15 N·m (0.14 - 0.21 kg-m, 12 - 19 in-lb)

Side bearing preload

: 0.64-0.98 N·m (0.065 - 0.010 kg-m, 6 - 8 in-lb)

When the preload torque is large

On pinion bearings

: Replace the collapsible spacer.

On side bearings

: Use thinner side bearing adjusting shims.

When the preload is small

On pinion bearings

: Tighten the pinion nut.

On side bearings

: Use thicker side bearing adjusting shims.

PDIA0048E

Thickness

Part No.

Thickness

Part No.

Thickness

Part No.

1.85 mm (0.0728 in)
1.90 mm (0.0748 in)
1.95 mm (0.0768 in)
2.00 mm (0.0787 in)

38453 4N200
38453 4N201
38453 4N202
38453 4N203

2.05 mm (0.0807 in)
2.10 mm (0.0827 in)
2.15 mm (0.0854 in)
2.20 mm (0.0866 in)

38453 4N204
38453 4N205
38453 4N206
38453 4N207

2.25 mm (0.0886 in)
2.30 mm (0.0906 in)
2.35 mm (0.0925 in)

38453 4N208
38453 4N209
38453 4N210

REAR FINAL DRIVE ASSEMBLY

RFD-15

RFD

Revision; 2004 April

2003 Murano

RING GEAR TO DRIVE PINION BACKLASH

Drain the oil.

Remove the rear cover. Refer to

RFD-20, "Removal of Differential Assembly"

Following the procedure below, install a dummy cover set to the
gear carrier.

Fit dummy cover shims to the right and left side bearing adjust-
ing shims.

Temporarily tighten a dummy cover to the gear carrier.

Position a dummy cover spacer to the dummy cover.

Tighten rear cover mounting bolts to the specified torque.

Tighten dummy cover spacer mounting bolts evenly to the specified torque.

Fit a dial gauge to the ring gear face to measure the backlash.

●

If outside the standard, change the thickness of the side bearing
adjusting shims.

Side bearing adjusting shims

Tool Number

: KV381086S1 ( – )

SDIA0562E

: 31 - 36 N·m (3.2 - 3.6 kg-m, 23 - 26 ft-lb)

: 5.9 N·m (0.6 kg-m, 52 in-lb)

Backlash

: 0.10 - 0.15 mm (0.0039 - 0.0059 in)

PDIA0049E

When the backlash is large:

Make the ring gear back adjusting shims thicker, and the ring gear front adjusting
shims thinner.

When the backlash is small:

Make the ring gear back adjusting shims thinner, and the ring gear front adjusting
shims thicker.

Thickness

Part No.

Thickness

Part No.

Thickness

Part No.

1.85 mm (0.0728 in)
1.90 mm (0.0748 in)
1.95 mm (0.0768 in)
2.00 mm (0.0787 in)

38453 4N200
38453 4N201
38453 4N202
38453 4N203

2.05 mm (0.0807 in)
2.10 mm (0.0827 in)
2.15 mm (0.0854 in)
2.20 mm (0.0866 in)

38453 4N204
38453 4N205
38453 4N206
38453 4N207

2.25 mm (0.0886 in)
2.30 mm (0.0906 in)
2.35 mm (0.0925 in)

38453 4N208
38453 4N209
38453 4N210

RFD-16

REAR FINAL DRIVE ASSEMBLY

Revision; 2004 April

2003 Murano

RING GEAR RUNOUT

Drain the oil.

Remove the rear cover.Refer to

RFD-20, "Removal of Differential Assembly"

Attach dummy cover set. Refer to

RFD-15, "RING GEAR TO

DRIVE PINION BACKLASH"

Fit a dial gauge to the ring gear back face.

Rotate the ring gear to measure runout.

●

If outside the repair limit, check ring gear assembly condition;
foreign material may be caught between ring gear and differen-
tial case, or differential case or ring gear may be deformed, etc.

CAUTION:

Replace the ring gear and drive pinion gear as a set.

Tool Number

: KV381086S1 ( – )

Runout limit

: 0.05 mm (0.0020 in)

PDIA0050E

REAR FINAL DRIVE ASSEMBLY

RFD-17

RFD

Revision; 2004 April

2003 Murano

COMPANION FLANGE RUNOUT

Fit a dial gauge onto the companion flange face (inner side of
the propeller shaft mounting bolt holes).

Rotate the companion flange to check for runout.

Fit a test indicator to the inner side of the companion flange
(socket diameter).

Rotate the companion flange to check for runout.

If the runout value is outside the repair limit, follow the procedure
below to adjust.

Check for runout while changing the phase between companion flange and drive pinion gear by 90

step,

and search for the point where the runout is the minimum.

If the runout value is still outside of the limit after the phase has been changed, replace the companion
flange.

If the runout value is still outside of the limit after the companion flange has been replaced, possible cause
will be an assembly malfunction of the drive pinion gear and the electronically controlled coupling, mal-
functioning coupling bearing, or malfunctioning electronically controlled coupling.

TOOTH CONTACT

Drain the oil.

Remove the rear cover. Refer to

RFD-20, "Removal of Differential Assembly"

Attach dummy cover set. Refer to

RFD-15, "RING GEAR TO

DRIVE PINION BACKLASH"

Thoroughly clean ring gear and drive pinion teeth.

Lightly apply a mixture of powdered ferric oxide and oil or the
equivalent. Apply it to 3 to 4 teeth of ring gear drive side.

Rotate the ring gear back and forth in several times, check drive
pinion gear to ring gear tooth contact.

CAUTION:

Check tooth contact on drive side and reverse side.

Runout limit

: 0.13 mm (0.0051 in)

Runout limit

: 0.13 mm (0.0051 in)

SDIA0569E

Tool Number

: KV381086S1 ( – )

PDIA0051E

SDIA0570E

RFD-18

REAR FINAL DRIVE ASSEMBLY

Revision; 2004 April

2003 Murano

If the tooth contact is improperly adjusted, follow the procedure
below to adjust the pinion height (dimension X in the figure).

SDIA0563E

PDH0085D

REAR FINAL DRIVE ASSEMBLY

RFD-19

RFD

Revision; 2004 April

2003 Murano

Drive pinion adjusting shim

●

In case of face contact or heel contact, thicken the drive pinion
gear adjusting shims to move the drive pinion gear closer to the
ring gear.

●

In case of flank contact or toe contact, thin the drive pinion gear
adjusting shims to move the drive pinion gear farther from the
ring gear.

Thickness Part

No.

Thickness Part

No.

1.70 mm (0.0669 in)
1.73 mm (0.0681 in)
1.76 mm (0.0693 in)
1.79 mm (0.0705 in)
1.82 mm (0.0717 in)
1.85 mm (0.0728 in)
1.88 mm (0.0740 in)
1.91 mm (0.0752 in)
1.94 mm (0.0764 in)
1.97 mm (0.0776 in)

38154 4N200
38154 4N201
38154 4N202
38154 4N203
38154 4N204
38154 4N205
38154 4N206
38154 4N207
38154 4N208
38154 4N209

2.00 mm (0.0787 in)
2.03 mm (0.0799 in)
2.06 mm (0.0811 in)
2.09 mm (0.0823 in)
2.12 mm (0.0835 in)
2.15 mm (0.0846 in)
2.18 mm (0.0858 in)
2.21 mm (0.0870 in)
2.24 mm (0.0882 in)

38154 4N210

38154 4N211

38154 4N212
38154 4N213
38154 4N214
38154 4N215
38154 4N216
38154 4N217
38154 4N218

SDIA0571E

SDIA0572E

RFD-20

REAR FINAL DRIVE ASSEMBLY

Revision; 2004 April

2003 Murano

Disassembly and Assembly

ADS000EP

DISASSEMBLY
Removal of Electric Controlled Coupling Assembly

Using the drive pinion flange wrench, Remove companion flange nut.

Using the puller, remove the companion flange.

Remove coupling cover.

Using flat tip screwdriver, remove Front oil seal from the cou-
pling cover.

CAUTION:

Be careful not to damage the coupling cover.

Remove electric controlled coupling assembly from the drive pinion.

Using a puller, remove coupling front bearing from the electroni-
cally controlled coupling.

CAUTION:

When the bearing is replaced with new one, reassemble the
shim between bearing and the coupling.

Removal of Differential Assembly

Using flat tip screwdriver, remove side oil seal from the gear car-
rier assembly.

CAUTION:

Be careful not to damage the gear carrier and rear cover.

Remove rear cover mounting bolts.

Fit a drift to the right and left side bearing adjusting shims indi-
vidually. Compress differential case assembly and side bearing
to remove gear carrier assembly and rear cover.

CAUTION:

The pressure shall be as low as possible to remove gear
carrier assembly and rear cover. The maximum pressure
shall be 10 kN (1 ton, 1.1 US ton, 1.0 Imp ton).

Tool number

: KV38108300 ( – )

PDG0213D

Tool number

A: Commercial service tool

B: Commercial service tool

PDIA0066E

PDG0216D

Tool number

: KV40100610 (J26089)

PDIA0065E

REAR FINAL DRIVE ASSEMBLY

RFD-21

RFD

Revision; 2004 April

2003 Murano

NOTE:
The differential case assembly, side bearings, and adjusting shims are compressed and integrated in the
gear carrier and rear cover.

Remove side bearing adjusting shims and side bearing outer race.

CAUTION:

Mark the side bearing adjusting shims so that the original mounting positions (right/left) can be
identified later.

Remove ring gear mounting bolts, and remove ring gear from the differential case.

Using a puller and a drift, remove side bearing inner race.

Using a pin punch, pull the lock pin out of the pinion mate shaft.

Remove pinion mate shaft, pinion mate gears, pinion mate
thrust washers, side gears, side gear thrust washers from the
differential case.

Removing Drive Pinion Assembly

Remove Electric controlled coupling assembly. Refer to

RFD-20, "Removal of Electric Controlled Coupling

Assembly"

Remove differential case assembly. Refer to

RFD-20, "Removal of Differential Assembly"

Fit a drive pinion socket onto the drive pinion spline. Using a pin-
ion nut wrench, remove drive pinion nut.

Remove center oil seal.

Press the drive pinion gear assembly out of the gear carrier.

Remove pinion front bearing inner race.

Remove collapsible spacer.

Tool number

A: Commercial service tool

B: Commercial service tool

C: ST33052000 ( – )

D: Commercial service tool

E: Commercial service tool

PDIA0053E

Tool number

: ST23550000 ( – )

PDIA0062E

Tool number

A: KV38108400 ( – )

B: KV38108500 ( – )

PDIA0054E

SDIA0576E

RFD-22

REAR FINAL DRIVE ASSEMBLY

Revision; 2004 April

2003 Murano

Using a puller, remove pinion rear bearing inner race from the
drive pinion.

Using a brass rod, tap the pinion front bearing outer race evenly
from the 2 cutouts on the gear carrier and remove pinion front
bearing outer race.

CAUTION:

Be careful not to damage the gear carrier.

10. Using a brass rod, tap the drive pinion adjusting shim evenly

from the 2 cutouts on the gear carrier and remove drive pinion
adjusting shims and pinion rear bearing outer race.

CAUTION:

Be careful not to damage the gear carrier.

ASSEMBLY
Assembly of Drive Pinion Assembly

Assemble with a drive pinion adjusting shim of the same thick-
ness as was installed prior to disassembly. Using a drift, press a
pinion rear bearing outer race into the gear carrier.

CAUTION:

●

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

●

Do not reuse the pinion rear bearing outer race.

Using a drift, press a pinion front bearing outer race into the gear
carrier.

CAUTION:

●

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

●

Do not reuse the pinion front bearing outer race.

Tool number

A: Commercial service tool

B: Commercial service tool

PDIA0055E

SDIA0564E

Tool number

: ST17130000 ( – )

PDIA0056E

Tool number

: ST33230000 (J25805-01)

PDIA0067E

REAR FINAL DRIVE ASSEMBLY

RFD-23

RFD

Revision; 2004 April

2003 Murano

Using a drift, press a pinion rear bearing inner race into the drive
pinion.

CAUTION:

Do not reuse the pinion rear bearing inner race.

After checking and adjusting the tooth contact and backlash of
the hypoid gear following the procedure below, assemble a col-
lapsible spacer to the drive pinion.

CAUTION:

●

Be careful of the mounting orientation of the collapsible
spacer.

●

Do not reuse the collapsible spacer.

Apply differential oil to the pinion rear bearing, and assemble the
drive pinion to the gear carrier.

CAUTION:

Do not assemble a collapsible spacer.

Assemble a pinion front bearing inner race to the drive pinion.
Using a drift and press stand, press the pinion nut as far as it
can be tightened.

Temporarily tighten the removed pinion nut to the drive pinion.

NOTE:
Use the removed pinion nut only for the preload measurement.

Fit the drive pinion socket onto the drive pinion spline. Using a
pinion nut wrench, tighten the pinion nut to the specified preload
torque.

CAUTION:

The pinion nut is tightened with no collapsible spacer. Be
careful not to overtighten it. While measuring the preload,
tighten it by 5

to 10

Apply differential oil to the side bearings, and install new side
bearing adjusting shims with the same thickness or re-install the
old ones to the same mounting position they were in prior to dis-
assembly. Install the differential case assembly to the gear car-
rier. Refer to

RFD-25, "Installation of Differential Assembly"

Install a dummy cover set to check and adjust the tooth contact.
Refer to

RFD-17, "TOOTH CONTACT"

Check and adjust the backlash. Refer to

RFD-15, "RING GEAR

TO DRIVE PINION BACKLASH"

Tool number

: ST23860000 ( – )

PDIA0068E

Tool number

A: KV40100610 (J26089)

B: ST38220000 ( – )