1998 NISSAN PICK-UP Repair Manual

TRANSFER
SECTIONTF
CONTENTS
PREPARATION......................................................... 1
Special Service Tools ............................................ 1
Commercial Service Tools ..................................... 2
DESCRIPTION........................................................... 3
Cross-sectional View ............................................. 3
ON-VEHICLE SERVICE............................................ 4
Replacing Oil Seal ................................................. 4
Position Switch Check ........................................... 5
REMOVAL AND INSTALLATION............................. 6
Removal ................................................................. 6
Installation .............................................................. 6
TRANSFER GEAR CONTROL................................. 7
MAJOR OVERHAUL................................................. 8
Case Components ................................................. 8
Gear Components.................................................. 9
Shift Control Components.................................... 10DISASSEMBLY........................................................ 11
REPAIR FOR COMPONENT PARTS..................... 16
Mainshaft.............................................................. 16
Front Drive Shaft.................................................. 18
Counter Gear ....................................................... 19
Main Gear ............................................................ 19
Front Case ........................................................... 21
Front Case Cover ................................................ 21
Bearing Retainer .................................................. 22
Rear Case ............................................................ 22
Shift Control Components.................................... 23
ASSEMBLY.............................................................. 24
SERVICE DATA AND SPECIFICATIONS (SDS)... 30
General Specifications ......................................... 30
Inspection and Adjustment .................................. 30
TF

Special Service Tools
Tool number
Tool nameDescription
ST38060002
Flange wrench
NT428
Removing companion flange nut
Installing companion flange nut
a: 480 mm (18.90 in)
b: Pitch dia.: 75 mm (2.95 in)
Pin dia.: 10 mm (0.39 in)
ST30021000
Puller
NT411
Removing counter gear front bearing
(Use with ST36710010)
RemovingL&Hhub
a: 110 mm (4.33 in) dia.
b: 68 mm (2.68 in) dia.
ST30031000
Puller
NT411
Removing counter gear rear bearing
(Use with ST36710010)
a: 90 mm (3.54 in) dia.
b: 50 mm (1.97 in) dia.
ST33290001
Puller
NT414
Removing center case oil seal
Removing rear oil seal
a: 250 mm (9.84 in)
b: 160 mm (6.30 in)
ST33051001
Puller
NT657
Removing companion flange
a: 135 mm (5.31 in)
b: 100 mm (3.94 in)
c: 130 mm (5.12 in)
ST30720000
Drift
NT115
Installing center case oil seal
Installing rear oil seal
a: 77 mm (3.03 in) dia.
b: 55.5 mm (2.185 in) dia.
ST36710010
Drift
NT063
Removing counter gear front bearing
(Use with ST30021000)
Removing counter gear rear bearing
(Use with ST30031000)
a: 34.5 mm (1.358 in) dia.
PREPARATION
TF-1

Tool number
Tool nameDescription
ST33061000
Drift
NT116
Removing main gear bearing
a: 28.5 mm (1.122 in) dia.
b: 38 mm (1.50 in) dia.
ST30613000
Drift
NT073
Installing main gear bearing
Installing cover oil seal
a: 72 mm (2.83 in) dia.
b: 48 mm (1.89 in) dia.
Commercial Service Tools
Tool name Description
Puller
NT077
Removing front drive shaft front bearing
Removing front drive shaft rear bearing
Removing main gear bearing
Drift
NT117
V1Installing mainshaft rear bearing
V2InstallingL&Hhub
V3Installing shift shaft oil seal
V1a: 50 mm (1.97 in) dia.
b: 42 mm (1.65 in) dia.
c: 180 mm (7.09 in)
V2a: 60 mm (2.36 in) dia.
b: 50 mm (1.97 in) dia.
c: 60 mm (2.36 in)
V3a: 26 mm (1.02 in) dia.
b: 20 mm (0.79 in) dia.
c: 150 mm (5.91 in)
PREPARATION
Special Service Tools (Cont'd)
TF-2

Cross-sectional View
SMT598D
DESCRIPTION
TF-3

Replacing Oil Seal
CENTER CASE OIL SEAL
1. Remove exhaust front tube and heat insulator. Refer to
``Removal'', TF-6.
2. Remove front propeller shaft. Refer to PD section (``Removal
and Installation'', ``PROPELLER SHAFT'').
3. Remove companion flange nut.
4. Remove companion flange.
5. Remove center case oil seal.
6. Install center case oil seal.
lBefore installing, apply multi-purpose grease to seal lip.
7. Install companion flange.
8. Tighten nut to the specified torque.
9. Install front propeller shaft.
SHIFT SHAFT OIL SEAL
1. Remove front propeller shaft. Refer to PD section (``Removal
and Installation'', ``PROPELLER SHAFT'').
2. Remove companion flange. Refer to center case oil seal,
TF-4.
3. Remove transfer control lever from transfer outer shift lever.
Then remove outer shift lever.
SMT801CA
SMT802CA
SMT803CA
SMT804CA
SMT863C
ON-VEHICLE SERVICE
TF-4

4. Remove shift shaft oil seal.
lBe careful not to damage cross shaft.
5. Install shift shaft oil seal.
lBefore installing, apply multi-purpose grease to seal lip.
6. Install transfer control linkage.
7. Install companion flange. Refer to center case oil seal, TF-4.
8. Install front propeller shaft.
REAR OIL SEAL
1. Remove rear propeller shaft. Refer to PD section (``Removal
and Installation'', ``PROPELLER SHAFT'').
2. Remove rear oil seal.
3. Install rear oil seal.
lBefore installing apply multi-purpose grease to seal lip.
4. Install rear propeller shaft.
Position Switch Check
Switch Gear position Continuity
4WD switch4WD Yes
Except 4WD No
Neutral position switchNeutral Yes
Except neutral No
SMT491A
SMT805CA
SMT806CA
SMT807CA
SMT790CA
ON-VEHICLE SERVICE
Replacing Oil Seal (Cont'd)
TF-5

Removal
1. Drain oil from transfer and transmission.
2. Remove front and rear propeller shaft. Refer to PD section
(``Removal and Installation'', ``PROPELLER SHAFT'').
Insert plug into rear oil seal after removing propeller shaft.
lBe careful not to damage spline, sleeve yoke and rear oil
seal, when removing propeller shaft.
3. Remove torsion bar spring. Refer to FA section (``Torsion Bar
Spring'', ``FRONT SUSPENSION''). Then remove second
crossmember.
4. Disconnect 4WD and neutral position switches.
5. Remove transfer control lever from transfer outer shift lever.
6. Separate transfer from transmission.
WARNING:
Support transfer while removing it.
Installation
lApply recommended sealant to mating surface to transmis-
sion.
Recommended sealant:
Nissan genuine part KP610-00250, Three Bond
1215 or equivalent
lTighten bolts securing transfer.
Bolt No.Tightening torque
(kg-m, ft-lb)!mm (in)
V131 - 41 (3.2 - 4.2, 23 - 30) 45 (1.77)
V231 - 41 (3.2 - 4.2, 23 - 30) 60 (2.36)
SMT142D
SMT863C
SMT495A
SMT496A
REMOVAL AND INSTALLATION
TF-6

SMT864CB
TRANSFER GEAR CONTROL
TF-7