2005 NISSAN X-TRAIL differential

RFD-24
REAR FINAL DRIVE ASSEMBLY

8. Using a puller, remove pinion rear bearing inner race from the
drive pinion.
9. Using a brass rod, tap the pinion front bearing outer race evenly
from the 2 cutouts on the carrier case and remove pinion front
bearing outer race.
CAUTION:
Be careful not to damage the carrier case.
10. Using a brass rod, tap the drive pinion adjusting shim evenly
from the 2 cutouts on the carrier case and remove drive pinion
adjusting shims and pinion rear bearing outer race.
CAUTION:
Be careful not to damage the carrier case.
INSPECTION

Clean up the disassembled parts. Then, inspect if the parts are wear or damaged. If so, follow the mea-
sures below.
PDIA0179E
SDIA0564E
Content Measures
Hypoid gear

If the gear teeth do not mesh or line-up correctly, determine the cause and adjust, repair, or replace
as necessary.

If the gear are worn, cracked, damaged, pitted or chipped (by friction) noticeably, replace with a
new gears.
Bearing

If found any chipped (by friction), pitted, worn, rusted, scratched mark, or unusual noise from the
bearing, replace with a new bearing ASSY (as new set).
Side gear thrust washer and
Pinion mate thrust washer

Replace with a new one if found any cracks or damage on the surface of the tooth.

Replace with a new one if found any worn or chipped mark on the contact sides of the thrust
washer.
Side gear and Pinion mate
thrust washer

Replace with a new one if found that it chipped (by friction), damaged, or unusual worn.
Oil seal

Oil seals must be replaced with a new one whenever disassembled.
Differential case

Replace with a new one if found any wear or cracks on the contact sides of the Differential case.
Companion flange

Replace with a new one if found any chipped marks (about 0.10mm, 0.0039in) or other damage on
the contact sides of the lips of the companion flange.

REAR FINAL DRIVE ASSEMBLY
RFD-25
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RFD

ASSEMBLY
Assembly of Drive Pinion Assembly
1. Assemble with a drive pinion adjusting shim of the same thick-
ness as was installed prior to disassembly. Using the suitable
drift, press a pinion rear bearing outer race into the carrier case.
CAUTION:

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

Do not reuse the pinion rear bearing outer race.
2. Using the drift below, press a pinion front bearing outer race into
the carrier case.
CAUTION:

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

Do not reuse the pinion front bearing outer race.
3. Using the drift below, press a pinion rear bearing inner race into
the drive pinion.
CAUTION:
Do not reuse the pinion rear bearing inner race.
4. 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 direction of the collapsible
spacer.

Do not reuse the collapsible spacer.
a. Apply differential oil to the pinion rear bearing, and assemble the
drive pinion to the carrier case.
PDIA0898E
Tool number : ST33230000
PDIA0067E
Tool number : ST23860000
PDIA0068E
PDIA0239E

RFD-26
REAR FINAL DRIVE ASSEMBLY

b. Assemble a pinion front bearing inner race to the drive pinion.
Using the drift and suitable stand, press the pinion nut as far as
it can be tightened.
c. Temporarily tighten the removed pinion nut to the drive pinion.
NOTE:
Use the removed pinion nut only for the preload measurement.
d. Fit the drive pinion gear socket onto the drive pinion spline.
Using the pinion nut wrench, tighten the pinion nut to the speci-
fied 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°.
e. 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 carrier
case. Refer to RFD-28, "
Installation of Differential Assembly" .
f. Install a dummy cover set to check and adjust the tooth contact.
Refer to RFD-19, "
TOOTH CONTACT" .
g. Check and adjust the backlash. Refer to RFD-18, "
DRIVE
GEAR TO DRIVE PINION BACKLASH" .
h. Remove dummy cover set, and remove differential case assembly.
i. Remove pinion nut, pinion front bearing inner race, and remove
drive pinion gear.
5. Install the drive pinion gear with a collapsible spacer to the car-
rier case.Tool number : ST23860000
PDIA0899E
Tool number A: KV38108400
B: KV38108500
C: ST3127S000
PDIA0058E
SDIA0576E

RFD-28
REAR FINAL DRIVE ASSEMBLY

9. Install center oil seal as shown in the right figure.
10. Install the differential case assembly. Refer to RFD-28, "
Installa-
tion of Differential Assembly" .
CAUTION:
Do not install the rear cover.
11. Install the dummy cover set, and check backlash, drive gear
back runout, and tooth contact. Refer to RFD-19, "
TOOTH CON-
TA C T" .
12. Remove the dummy cover, then install the rear cover, and drive
in the oil seal. Refer to.RFD-28, "
Installation of Differential
Assembly" .
13. Check overall preload torque. Refer to RFD-17, "
TOTAL PRE-
LOAD" .
14. Connect electric controlled coupling assembly. Refer to RFD-30,
"Installation of Electric Controlled Coupling Assembly" .
15. Check companion flange runout. Refer to RFD-19, "
COMPAN-
ION FLANGE RUNOUT" .
Installation of Differential Assembly
1. Assemble new side gear thrust washers with the same thickness as the ones installed prior to disassem-
bly or reinstall the old ones on the side gears.
2. Assemble the side gears, side gear thrust washers, pinion mate gears, and pinion mate thrust washers to
the differential case, and temporarily assemble the pinion mate shaft.
3. Measure the side gear end play following the procedure below,
and select the appropriate side gear thrust washers.

Using a thickness gauge, measure the clearance between
side gear back and the differential case at 3 different points,
while rotating the side gear. Average the 3 readings, and
select the appropriate side gear thrust washer so that the
mean value is within specifications below. (Measure the clear-
ance of the other side as well.)
*: Always check with the Parts Department for the latest parts information.
CAUTION:

Before measurement, place differential case straight up
so that side gear to be measured comes upward. To pre-
vent the side gear from tilting, insert thickness gauges
with the same thickness from both sides.

Select a side gear thrust washer for right and left individually.
4. Assemble the selected side gear thrust washer to the differential case.Tool number : ST35271000
PDIA0464E
Side gear end play standard:
0.2 mm (0.008 in) or less. Every gear shall rotate
smoothly with no abnormal feeling of drag.
Thickness Part number* Thickness Part number*
0.74 mm (0.0291 in)
0.77 mm (0.0303 in)
0.80 mm (0.0315 in)38424 4N200
38424 4N201
38424 4N2020.83 mm (0.0327 in)
0.86 mm (0.0339 in)38424 4N203
38424 4N204
SDIA0583E

REAR FINAL DRIVE ASSEMBLY
RFD-29
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RFD

5. Using the pin punch, drive a lock pin into the pinion mating shaft.
CAUTION:
Do not reuse the lock pin.
6. Using the suitable drift, press a side bearing inner race into the
differential case.
CAUTION:
Do not reuse the side bearing inner race.
7. Apply locking sealant onto the thread of the drive gear.
CAUTION:
The drive gear back, threaded holes, and drive gear bolts shall be cleaned and decreased suffi-
ciently.
8. Assemble the drive gear to the differential case, and tighten it with drive gear bolt. Refer to RFD-16,
"Components" .
9. Apply differential oil to the side bearings, and assemble new side bearing adjusting shims (2 pieces for
one side) with the same thickness as the ones installed prior to disassembly or re-install the old ones, with
a side bearing outer race to the differential case.
If the side bearing adjusting shims have been already selected, use them.
CAUTION:
Do not reuse the side bearing outer race.
10. Fit the suitable drifts to the right and left side bearing adjusting
shims individually. Compress differential case assembly and
side bearing to install the carrier case assembly to differential
case assembly.
CAUTION:

The drift shall be placed on the center of the adjusting
shims.

The pressure shall be as low as possible to install the
carrier case assembly into the differential assembly. The
maximum pressure shall be 1 ton.

If the adjusting shims are installed by tapping, the carrier
case may be damaged. Avoid tapping.
11. Install a dummy cover set, check and adjust the backlash, drive gear back runout, tooth contact, and over-
all preload torque. Refer to RFD-17, "
Pre-Inspection" .
12. Remove dummy cover set.
PDIA0897E
PDIA0901E
PDIA0900E

RFD-30
REAR FINAL DRIVE ASSEMBLY

13. Apply a continuos bead of sealant around the carrier case mat-
ing surface on the rear cover as shown in the figure. Overlap
both ends of the bead for at least 3 mm (0.12 in).
CAUTION:
Remove old sealant on the mounting surface, then remove
any moisture, oil, and foreign material on the application
and mounting surfaces.
14. Fit the suitable drifts to the right and left side bearing adjusting
shims individually. Compress differential case assembly and
side bearing to install the rear cover.
CAUTION:

The drift shall be placed on the center of the adjusting
shims.

The pressure shall be as low as possible to install the
rear cover. The maximum pressure shall be 10 kN (1 ton,
1.1 US ton, 1.0 Imp ton)

If the rear cover is forced in by tapping, the rear cover
may be damaged by the adjusting shims. Avoid tapping.
15. Tighten rear cover mounting bolts to the specified torque. Refer to RFD-16, "
Components" .
16. Using both drift, drive the oil seal until it becomes flush with the
case end.
CAUTION:

Do not reuse oil seals.

Apply multi-purpose grease onto the oil seal lips, and dif-
ferential oil onto the circumference of the oil seal.
17. Check overall preload torque. Refer to RFD-17, "
TOTAL PRE-
LOAD" .
Installation of Electric Controlled Coupling Assembly
1. Using the drift below, install the coupling front bearing to the
electric controlled coupling.
CAUTION:
At disassembly, be sure to install shim between electric
controlled coupling and bearing. Chamfering side of shim
should be coupled to install.
2. Assemble the electric controlled coupling assembly to the drive pinion gear.
PDIA0240E
PDIA0896E
Tool number : KV38100200
PDIA0448E
Tool number : ST22360002
PDIA0060E

FAX-6
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS00127
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
—
FAX-14—
FAX-7, FA X -11

—
NVH in PR section.
NVH in RFD section.
NVH in RAX and RSU sections.
Refer to FRONT AXLE in this chart.
NVH in WT section.
NVH in WT section.
Refer to DRIVE SHAFT in this chart.
NVH in BR section.
NVH in PS section.
Possible cause and SUSPECTED PARTS
Excessive joint angle
Joint sliding resistance
Imbalance
Improper installation, looseness
Parts interference
PROPELLER SHAFT
DIFFERENTIAL
REAR AXLE AND REAR SUSPENSION
FRONT AXLE
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
SymptomDRIVE
SHAFTNoise×× ×××××× ××
Shake×× ×××××××
FRONT
AXLENoise×× ××× ×××××
Shake×××××××××
Vibration×××××××
Shimmy×× ×××××
Judder× × ×× ××
Poor quality ride or handling×× × ××

FAX-12
FRONT DRIVE SHAFT

×: Applicable
–: Not applicable

Remove installation bolts from right-side drive shaft support bearing bracket. Then remove bracket from
engine.

Remove installation bolts from right-side drive shaft and remove drive shaft from side shaft.
INSPECTION AFTER REMOVAL

Move joint in up/down, left/right, and axial directions. Check for
motion that is not smooth and for significant looseness.

Check for cracking and damage of boots, and for grease leak-
age.
INSTALLATION

Install support bearing bracket onto engine and tighten installation bolts to specified torque. Refer to FA X -
11 , "Removal and Installation" .

Install drive shaft to side shaft and tighten installation bolts to specified torque. Refer to FA X - 11 , "Removal
and Installation" .
1. In order to prevent damage to differential side oil seal, first fit a
protector onto oil seal before inserting drive shaft. Slide drive
shaft slide joint and tap with a hammer to install securely.
CAUTION:
Be sure to check that circular clip is securely fastened.
2. Insert drive shaft into steering knuckle. Install lock nut and then
temporarily tighten lock nut. Refer to FA X - 11 , "
Removal and
Installation" .
3. Install installation bolts for steering knuckle and strut.
4. Use lock plate to fix brake hose to strut.
5. Install tie rod to steering knuckle.
6. Install wheel sensor.
7. Tighten lock nuts to specified torque. Refer to FAX-11, "
Removal
and Installation" .
8. Install cotter pin.
CAUTION:
Discard the old cotter pin; replace with a new one.
Engine typeDrive shaft with circular clip
Right Left
QR20DE and QR25DE –×
YD22DDTi –×
RAA0030D
Model type Protector SST No.
RH KV38107800
LH KV38105500
SDIA0593E
SDIA0603E