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FFD

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D DRIVELINE/AXLE

SECTION
FRONT FINAL DRIVE
FFD B

FFD

E
CONTENTS
PRECAUTIONS ......................................................... 2
. CARRIER COVER ................................................... 12
. F
Precautions for Servicing Front Final Drive ............. 2 . Removal and Installation ....................................... 12
.
PREPARATION .......................................................... 3
. REMOVAL .......................................................... 12
.
Special Service Tools .............................................. 3
. INSTALLATION .................................................. 12
. G
Commercial Service Tools ....................................... 5 . FRONT FINAL DRIVE ASSEMBLY ......................... 13 .
NOISE, VIBRATION AND HARSHNESS (NVH) Removal and Installation ....................................... 13
.
TROUBLESHOOTING ............................................... 6 . REMOVAL .......................................................... 13
.
H
NVH Troubleshooting Chart .................................... 6 . INSTALLATION .................................................. 14
.
DESCRIPTION ........................................................... 7
. Disassembly and Assembly ................................... 15 .
Cross-Sectional View .............................................. 7
. COMPONENTS .................................................. 15
.
DIFFERENTIAL GEAR OIL ....................................... 8 . ASSEMBLY INSPECTION AND ADJUSTMENT 16 ... I
Changing Differential Gear Oil ................................ 8 . DISASSEMBLY .................................................. 18
.
DRAINING ............................................................ 8
. INSPECTION AFTER DISASSEMBLY ............... 23 .
FILLING ................................................................ 8
. ADJUSTING AND SELECTING WASHERS ...... 24 . J
Checking Differential Gear Oil ................................. 8 . ASSEMBLY ........................................................ 28
.
DIFFERENTIAL GEAR OIL LEAKAGE AND SERVICE DATA AND SPECIFICATIONS (SDS) ..... 34 .
LEVEL .................................................................. 8
. General Specifications ........................................... 34
.
K
FRONT OIL SEAL ..................................................... 9. Inspection and Adjustment .................................... 34.
Removal and Installation ......................................... 9. DRIVE GEAR RUNOUT ..................................... 34 .
REMOVAL ............................................................ 9
. SIDE GEAR CLEARANCE ................................. 34 .
INSTALLATION .................................................. 10 . PRELOAD TORQUE .......................................... 34 . L
SIDE OIL SEAL ........................................................11
. BACKLASH ........................................................ 34
.
Removal and Installation ........................................11 . COMPANION FLANGE RUNOUT ...................... 34 .
REMOVAL ...........................................................11
. SELECTIVE PARTS ........................................... 35 . M
INSTALLATION ...................................................11 .

Revision: September 2006 FFD-1 2007 Pathfinder
PRECAUTIONS

PRECAUTIONS PFP:00001

Precautions for Servicing Front Final Drive EDS0039G

G Before starting diagnosis of the vehicle, understand the symptoms well. Perform correct and systematic
operations.
G Check for the correct installation status prior to removal or disassembly. When matching marks are
required, be certain they do not interfere with the function of the parts they are applied to.
G Overhaul should be done in a clean work area, a dust proof area is recommended.
G Before disassembly, completely remove sand and mud from the exterior of the unit, preventing them from
entering into the unit during disassembly or assembly.
G Always use shop paper for cleaning the inside of components.
G Avoid using cotton gloves or a shop cloth to prevent the entering of lint.
G Check appearance of the disassembled parts for damage, deformation, and abnormal wear. Replace
them with new ones if necessary.
G Gaskets, seals and O-rings should be replaced any time the unit is disassembled.
G Clean and flush the parts sufficiently and blow them dry.
G Be careful not to damage sliding surfaces and mating surfaces.
G When applying sealant, remove the old sealant from the mating surface; then remove any moisture, oil,
and foreign materials from the application and mating surfaces.
G In principle, tighten nuts or bolts gradually in several steps working diagonally from inside to outside. If a
tightening sequence is specified, observe it.
G During assembly, observe the specified tightening torque.
G Add new differential gear oil, petroleum jelly, or multi-purpose grease, as specified.

Revision: September 2006 FFD-2 2007 Pathfinder
PREPARATION

PREPARATION PFP:00002
A
Special Service Tools EDS0039H

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number Description
B
(Kent-Moore No.)
Tool name
KV38108300 Removing and installing drive pinion lock nut
(J-44195) C
Flange wrench

FFD

NT771

KV381054S0 Removing front oil seal E
(J-34286)
Puller

ZZA0601D
G
ST30720000 G Installing front oil seal
(J-25405) G Installing side oil seal
Drift
a: 77 mm (3.03 in) dia. H
b: 55.5 mm (2.185 in) dia.

ZZA0811D I
ST27863000 G Installing front oil seal
( -- ) G Installing side oil seal
Drift J
a: 74.5 mm (2.933 in) dia.
b: 62.5 mm (2.461 in) dia.

K
ZZA1003D

ST3127S000 Measuring drive pinion bearing preload torque
(J-25765-A) and total preload torque L
Preload gauge
1: GG91030000
(J-25765)
Torque wrench M
2: HT62940000
( -- )
Socket adapter (1/2)
3: HT62900000 NT124

( -- )
Socket adapter (3/8)
KV10111100 Removing carrier cover
(J-37228)
Seal cutter

S-NT046

Revision: September 2006 FFD-3 2007 Pathfinder
PREPARATION

Tool number Description
(Kent-Moore No.)
Tool name
ST3306S001 Removing and installing side bearing inner
( -- ) race
Differential side bearing puller set a: 28.5 mm (1.122 in) dia.
1: ST33051001 b: 38 mm (1.50 in) dia.
(J-22888-20)
Puller
2: ST33061000
(J-8107-2)
NT072
Base
ST30031000 Removing drive pinion rear bearing inner race
(J-22912-01)
Replacer

ZZA0700D

KV38100600 Installing side bearing adjusting washer
(J-25267)
Drift

SDIA0429J

ST30613000 Installing drive pinion rear bearing outer race
(J-25742-3) a: 72 mm (2.83 in) dia.
Drift b: 48 mm (1.89 in) dia.

ZZA1000D

ST30611000 Installing drive pinion rear bearing outer race
(J-25742-1) (Use with ST30613000)
Drift bar

S-NT090

KV38100200 Installing drive pinion front bearing outer race
(J-26233) a: 65 mm (2.56 in) dia.
Drift b: 49 mm (1.93 in) dia.

ZZA1143D

ST30901000 Installing drive pinion rear bearing inner race
(J-26010-01) a: 79 mm (3.11 in) dia.
Drift b: 45 mm (1.77 in) dia.
c: 35.2 mm (1.386 in) dia.

ZZA0978D

Revision: September 2006 FFD-4 2007 Pathfinder
PREPARATION

Tool number Description
(Kent-Moore No.) A
Tool name
ST33200000 Installing drive pinion front bearing inner race
(J-26082) a: 60 mm (2.36 in) dia. B
Drift b: 44.5 mm (1.752 in) dia.

ZZA1002D

ST33230000 Installing side bearing inner race FFD
(J-35867) a: 51 mm (2.01 in) dia.
Drift b: 41 mm (1.61 in) dia.
c: 28 mm (1.10 in) dia.
E

ZZA1046D

( -- ) Adjusting bearing preload and drive pinion F
(J-34309) height
Differential shim selector tool
G

NT134 H
( -- ) Selecting drive pinion height adjusting washer
(J-25269-18)
Side bearing disc (2 Req'd)
I

J
NT135

KV10112100 Tightening bolts for drive gear
(BT-8653-A)
Angle wrench K

L
NT014

Commercial Service Tools EDS0039I M
Tool name Description
Power tool Loosening nuts and bolts

PBIC0190E

Revision: September 2006 FFD-5 2007 Pathfinder
Symptom

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