1998 NISSAN PICK-UP Repair Manual

2WD
SFA822B
FRONT AXLE
FA-12

4WD
SFA919B
FRONT AXLE
FA-13

Manual-lock Free-running Hub Ð 4WD Ð
REMOVAL AND INSTALLATION
1. Set knob of manual-lock free-running hub in the FREE posi-
tion.
2. Remove manual-lock free-running hub.
3. Remove snap ring and then draw out drive clutch.
4. When installing manual-lock free-running hub, make sure the
hub is in the FREE position.
Apply multi-purpose grease to the parts shown in the above
illustration.
5. Check operation of manual-lock free-running hub after instal-
lation.
INSPECTION
lCheck that the knob moves smoothly and freely.
lCheck that the clutch moves smoothly in the body.
AFA105
SFA936
SFA937
FRONT AXLE
FA-14

Auto-lock Free-running Hub Ð 4WD Ð
Removal
1. Set the auto-lock free-running hub in the FREE condition.
2. Remove auto-lock free-running hub assembly.
3. Remove snap ring.
4. Remove spindle washer and thrust washer.
5. After installing auto-lock free-running hub, check operation of
it.
When installing it, apply recommended grease to drive shaft
end.
Installation
1. When installing hub's mating parts (such as thrust washer
and spindle washer) on drive shaft, select suitable snap ring
so that end play between drive shaft and its mating parts is
within specifications.
Axial end play:
0.45 mm (0.0177 in) or less
Snap ring size:
Refer to SDS.
SFA909B
SFA828B
SFA863B
SFA847
FRONT AXLE
FA-15

2. Install auto-lock free-running hub assembly to wheel hub.
lWhen installing auto-lock free-running hub assembly, be
sure to align outer brake pawl with notch in spindle.
lAfter inserting auto-lock free-running hub assembly into bore
in wheel hub, make sure there is no clearance between hub
assembly and wheel hub.
Wheel Hub and Rotor Disc
REMOVAL AND INSTALLATION
1. Remove free-running hub assembly. Ð 4WD Ð
Refer to ``Auto-lock Free-running Hub Ð 4WD Ð'', FA-15, or
``Manual-lock Free-running Hub Ð 4WD Ð'', FA-14.
2. Remove brake caliper assembly without disconnecting
hydraulic line.
Be careful not to depress brake pedal, or piston will pop out.
Make sure brake hose is not twisted.
3. Remove lock washer. Ð 4WD Ð
4. Remove wheel bearing lock nut.
2WD: With suitable tool
4WD: With Tool
5. Remove wheel hub and wheel bearing.
Be careful not to drop outer bearing.
6. After installing wheel hub and wheel bearing, adjust wheel
bearing preload.
Refer to ``PRELOAD ADJUSTMENT'', ``Front Wheel
Bearing'', ``ON-VEHICLE SERVICE'', FA-5.
SFA864B
SFA825B
SFA364B
SFA826B
SFA827B
FRONT AXLE
Installation (Cont'd)
FA-16

DISASSEMBLY
lRemove bearing outer races with suitable brass bar.
INSPECTION
Thoroughly clean wheel bearings and wheel hub.
Wheel bearings
lMake sure wheel bearings roll freely and are free from noise,
cracks, pitting and wear.
Wheel hub
lCheck wheel hub for cracks by using a magnetic exploration
or dyeing test.
ASSEMBLY
1. Install bearing outer race with Tool until it seats in hub.
2. Install the sensor rotor using suitable drift and press. (Mod-
els with ABS)
Always replace sensor rotor with new one.
Pay attention to the direction of front sensor rotor as shown
in figure.
3. Pack multi-purpose grease in wheel hub and hub cap.
FA858
SFA943-B
SBR400DA
AFA122
FRONT AXLE
Wheel Hub and Rotor Disc (Cont'd)
FA-17

4. Apply multi-purpose grease to each bearing cone.
5. Pack grease seal lip with multi-purpose grease, then install
it into wheel hub with suitable drift.
Knuckle Spindle
REMOVAL
1. Remove free-running hub assembly. Ð 4WD Ð
Refer to ``Auto-lock Free-running Hub Ð 4WD Ð'', FA-15, or
``Manual-lock Free-running Hub Ð 4WD Ð'', FA-14.
2. Remove wheel hub and rotor disc.
Refer to ``Wheel Hub and Rotor Disc'', FA-16.
3. Separate drive shaft from knuckle spindle by slightly tapping
drive shaft end. Ð 4WD Ð
4. Separate tie-rod from knuckle spindle with Tool.
Install stud nut conversely on stud bolt so as not to damage
stud bolt.
5. Separate knuckle spindle from ball joints.
a. Loosen (do not remove) upper and lower ball joint tightening
nuts.
SFA459B
SFA828B
SFA844
SFA840-B
SFA829B
FRONT AXLE
Wheel Hub and Rotor Disc (Cont'd)
FA-18

b. Separate knuckle spindle from upper and lower ball joint
studs with Tool.
During above operation, never remove ball joint nuts which
are loosened in step (a) above.
Tool:
2WD
ST29020001
4WD
HT72520000
c. Remove ball joint tightening nuts.
Support lower link with jack.
d. Remove knuckle spindle from upper and lower links.
INSPECTION
Knuckle spindle
lCheck knuckle spindle for deformation, cracks and other
damage by using a magnetic exploration or dyeing test.
Bearing spacer Ð 2WD Ð
lCheck bearing spacer for damage.
Needle bearing Ð 4WD Ð
lCheck needle bearing for wear, scratches, pitting, flaking and
burn marks.
INSTALLATION
1. Install needle bearing into knuckle spindle. Ð 4WD Ð
Make sure that needle bearing is facing in the proper direc-
tion.
Apply multi-purpose grease.
2. Install knuckle spindle to upper and lower ball joints with
lower link jacked up.
CAUTION:
Make sure that oil and grease do not come into contact with
tapered areas of ball joint, knuckle spindle and threads of
ball joint.
3. Connect tie-rod to knuckle spindle.
SFA079
SFA830B
SFA962
SFA831B
FRONT AXLE
Knuckle Spindle (Cont'd)
FA-19