Nissan Pathfinder (2012 year). Manual — part 223
PREPARATION
DLN-349
< PREPARATION >
[FRONT FINAL DRIVE: R180A]
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Commercial Service Tool
INFOID:0000000007357608
ST33200000
(J-26082)
Drift
Installing drive pinion front bearing inner race
a: 60 mm (2.36 in) dia.
b: 44.5 mm (1.752 in) dia.
ST33230000
(J-35867)
Drift
Installing side bearing inner race
a: 51 mm (2.01 in) dia.
b: 41 mm (1.61 in) dia.
c: 28 mm (1.10 in) dia.
(
—
)
(J-34309)
Differential shim selector tool
Adjusting bearing preload and drive pinion
height
(
—
)
(J-25269-18)
Side bearing disc (2 Req'd)
Selecting drive pinion height adjusting washer
KV10112100
(BT-8653-A)
Angle wrench
Tightening bolts for drive gear
Tool number
(Kent-Moore No.)
Tool name
Description
ZZA1002D
ZZA1046D
NT134
NT135
NT014
Tool name
Description
Power tool
Loosening nuts, screws and bolts
PIIB1407E
August 2012
2012 Pathfinder
DLN-350
< SYSTEM DESCRIPTION >
[FRONT FINAL DRIVE: R180A]
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
SYSTEM DESCRIPTION
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
INFOID:0000000007357609
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×
: Applicable
Reference page
Possible cause and SUSPECTED PARTS
G
e
ar t
oo
th
rou
gh
Gea
r co
nt
ac
t i
mp
rop
er
To
ot
h s
u
rf
ac
es
w
o
rn
Ba
ck
la
sh
in
co
rrec
t
Co
mp
an
io
n f
lan
ge
e
xc
es
si
ve
run
ou
t
Gea
r oi
l i
mp
rop
er
PR
OP
EL
LE
R
S
H
A
F
T
FRO
N
T A
X
L
E
F
R
ONT
SUSPENSI
ON
TI
RE
S
ROAD W
H
EEL
DRIV
E SHAFT
BR
AK
E
S
S
T
EERING
Symptom
Noise
×
×
×
×
×
×
×
×
×
×
×
×
×
×
August 2012
2012 Pathfinder
DESCRIPTION
DLN-351
< SYSTEM DESCRIPTION >
[FRONT FINAL DRIVE: R180A]
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DESCRIPTION
Cross-Sectional View
INFOID:0000000007357610
1.
Differential side shaft
2.
Differential side shaft bearing
3.
Side gear
4.
Drive gear
5.
Pinion mate shaft
6.
Differential case
7.
Side bearing
8.
Pinion mate gear
9.
Drive pinion
10. Collapsible spacer
11. Companion flange
12. Drive pinion front bearing
13. Drive pinion rear bearing
14. Housing spacer
PDIA0695E
August 2012
2012 Pathfinder
DLN-352
< PERIODIC MAINTENANCE >
[FRONT FINAL DRIVE: R180A]
DIFFERENTIAL GEAR OIL
PERIODIC MAINTENANCE
DIFFERENTIAL GEAR OIL
Changing Differential Gear Oil
INFOID:0000000007357611
DRAINING
1. Stop the engine.
2. Remove the drain plug and gasket from the front final drive
assembly to drain the differential gear oil.
3. Install the drain plug with a new gasket to the front final drive
assembly. Tighten to the specified torque. Refer to
.
CAUTION:
Do not reuse gasket.
FILLING
1. Remove the filler plug and gasket from the front final drive
assembly.
2. Fill the front final drive assembly with new differential gear oil
until the level reaches the specified level near the filler plug hole.
3. Install the filler plug with a new gasket on it to the front final drive assembly. Tighten to the specified
DLN-360, "Disassembly and Assembly"
.
CAUTION:
Do not reuse gasket.
Checking Differential Gear Oil
INFOID:0000000007357612
DIFFERENTIAL GEAR OIL LEAKAGE AND LEVEL
1. Make sure that differential gear oil is not leaking from the front final drive assembly or around it.
2. Check the differential gear oil level from the filler plug hole as
shown.
CAUTION:
Do not start engine while checking differential gear oil level.
3. Install the filler plug with a new gasket on it to the front final drive
assembly. Tighten to the specified torque. Refer to
.
CAUTION:
Do not reuse gasket.
LDIA0175E
Differential gear oil
grade and capacity
: Refer to
AND CANADA : Fluids and
Lubricants"
(United States
and Canada),
MEXICO : Fluids and Lubri-
cants"
(Mexico).
LDIA0176E
LDIA0176E
August 2012
2012 Pathfinder
FRONT OIL SEAL
DLN-353
< REMOVAL AND INSTALLATION >
[FRONT FINAL DRIVE: R180A]
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REMOVAL AND INSTALLATION
FRONT OIL SEAL
Removal and Installation
INFOID:0000000007357613
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.
REMOVAL
1. Remove the drive shafts from the front final drive assembly. Refer to
RAX-8, "Removal and Installation"
.
2. Remove the front propeller shaft from the front final drive assembly. Refer to
.
3. Measure the total preload torque. Refer to
DLN-360, "Disassembly and Assembly"
.
NOTE:
Record the total preload torque measurement.
4. Remove the drive pinion lock nut using suitable tool.
5. Put matching marks on the companion flange and drive pinion
using paint.
CAUTION:
Use paint to make the matching marks. Do not damage the
companion flange or drive pinion.
6. Remove the companion flange using suitable tool.
7. Remove the front oil seal using Tool.
INSTALLATION
BDIA0001E
LDIA0171E
Tool number
: ST33290001 (J-34286)
LDIA0172E
August 2012
2012 Pathfinder
DLN-354
< REMOVAL AND INSTALLATION >
[FRONT FINAL DRIVE: R180A]
FRONT OIL SEAL
1. Apply multi-purpose grease to the lips and differential gear oil to
the circumference of the new front oil seal. Then drive the new
front oil seal in evenly until it becomes flush with the gear carrier
using Tools.
CAUTION:
• Do not reuse front oil seal.
• Do not incline the new front oil seal when installing.
• Apply multi-purpose grease to the lips and differential
gear oil to the circumference of the new front oil seal.
2. Install the companion flange to the drive pinion while aligning the matching marks.
3. Apply anti-corrosive oil to the threads of the drive pinion and the
seating surface of the new drive pinion lock nut. Then adjust the
drive pinion lock nut tightening torque using suitable tool (A),
and check the total preload torque using Tool (B).
• The total preload torque should be within the total preload
torque specification. When not replacing the collapsible
spacer, it should also be equal to the measurement taken dur-
ing removal plus an additional 0.56 N·m (0.06 Kg-m, 5 in-lb).
• If the total preload torque is low, tighten the drive pinion lock
nut in 6.8 N·m (0.69 Kg-m, 5ft-lb) increments until the total pre-
load torque is met.
CAUTION:
• Do not reuse drive pinion lock nut.
• Apply anti-corrosive oil to the threads of the drive pinion
and the seating surface of the new drive pinion lock nut.
• Adjust the drive pinion lock nut tightening torque to the
lower limit first. Do not exceed the drive pinion lock nut
.
• Do not loosen drive pinion lock nut to adjust the total preload torque. If the drive pinion lock nut
torque or the total preload torque exceeds the specifications, replace the collapsible spacer and
tighten it again to adjust. Refer to
DLN-360, "Disassembly and Assembly"
• After adjustment, rotate drive pinion back and forth 2 to 3 times to check for unusual noise, rota-
tion malfunction, and other malfunctions.
4. Install new side oil seals into the front final drive assembly. Refer to
DLN-355, "Removal and Installation"
.
5. Installation of the remaining components is in the reverse order of removal.
CAUTION:
Check the differential gear oil level after installation. Refer to
DLN-352, "Checking Differential Gear
.
Tool number
(A): ST30720000 (J-25405)
(B): ST27863000 ( — )
WDIA0147E
Tool number
(B): ST3127S000 (J-25765-A)
Total preload torque: Refer to
.
WDIA0381E
August 2012
2012 Pathfinder
SIDE OIL SEAL
DLN-355
< REMOVAL AND INSTALLATION >
[FRONT FINAL DRIVE: R180A]
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SIDE OIL SEAL
Removal and Installation
INFOID:0000000007357614
REMOVAL
1. Remove the drive shafts from the front final drive assembly. Refer to
.
2. Remove the side oil seal using suitable tool.
CAUTION:
Do not reuse the side oil seal.
INSTALLATION
1. Apply multi-purpose grease to the lips and differential gear oil to
the circumference of the new side oil seal. Then drive the new
side oil seal in evenly until it becomes flush with the gear carrier
using Tools.
CAUTION:
• Do not reuse side oil seal.
• Do not incline the new side oil seal when installing.
• Apply multi-purpose grease to the lips and differential
gear oil to the circumference of the new side oil seal.
2. Installation of the remaining components is in the reverse order of removal.
CAUTION:
Check the differential gear oil level after installation. Refer to
DLN-352, "Checking Differential Gear
.
LDIA0173E
Tool number
(A): ST30720000 (J-25405)
(B): ST27863000 ( — )
PDIA0826E
August 2012
2012 Pathfinder
DLN-356
< REMOVAL AND INSTALLATION >
[FRONT FINAL DRIVE: R180A]
CARRIER COVER
CARRIER COVER
Removal and Installation
INFOID:0000000007357615
REMOVAL
1. Drain the differential gear oil. Refer to
DLN-352, "Changing Differential Gear Oil"
2. Remove the front final drive assembly. Refer to
DLN-357, "Removal and Installation"
3. Remove the carrier cover bolts and separate the carrier cover
from the gear carrier using Tool.
CAUTION:
• Do not damage the mating surface.
• Do not insert flat-bladed screwdriver, this will damage the
mating surface.
INSTALLATION
1. Apply a 3 mm (0.12 in) bead of sealant to the mating surface of
the carrier cover as shown.
• Use Genuine Silicone RTV or equivalent. Refer to
"Recommended Chemical Products and Sealants"
.
CAUTION:
Remove any old sealant adhering to the mating surfaces.
Also remove any moisture, oil, or foreign material adhering
to the application and mating surfaces.
2. Install the carrier cover to the gear carrier. Tighten the bolts to
the specified torque. Refer to
3. Install the front final drive assembly. Refer to
CAUTION:
Fill the front final drive assembly with recommended differential gear oil. Refer to
Tool number
: KV10111100 (J-37228)
PDIA0699E
PDIA0712E
August 2012
2012 Pathfinder
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