NISSAN PATROL 1998 Y61 / 5.G Front Suspension User Guide

SFA859B
FRONT AXLE Ð Drive ¯ange and Free-running Hub
FA-10

Removal
1. Set knob of manual-lock free-running hub to the ``FREE'' posi-
tion.
2. Loosen bolts and remove free-running hub assembly.
3. Remove snap ring and take off drive clutch.
4. Take out bushing and spacer from wheel hub.
SFA427AA
SFA428A
SFA187
SFA188
SFA189
FRONT AXLE Ð Manual-lock Free-running Hub
FA-11

Installation
Install free-running hub in the reverse order of removal.
Apply multi-purpose grease to bushing and drive clutch
before installing on wheel hub and axle shaft, respectively.
+Install drive clutch.
+Place snap ring in drive shaft groove.
Axial end play:
0.4 mm (0.016 in) or less
Snap ring size:
Refer to SDS.
+When installing manual-lock free-running hub, make sure the
position ``FREE''.
Apply multi-purpose grease to drive shaft end.
+Check operation of manual-lock free-running hub after install-
ing it.
Inspection
+Check that hub moves smoothly and freely.
+Check that clutch moves smoothly in the body.
SFA860B
SFA200
SFA428A
FRONT AXLE Ð Manual-lock Free-running Hub
FA-12

Removal
1. Set the auto-lock free-running hub at the condition ``LOCK''.
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
speci®cations.
Axial end play:
0.4 mm (0.016 in) or less
Snap ring size:
Refer to SDS.
2. Install auto-lock free-running hub assembly to wheel hub.
+When installing auto-lock free-running hub assembly, be sure
to align outer brake pawl with notch in spindle.
+After inserting auto-lock free-running hub assembly into bore in
wheel hub, make sure there is no clearance between hub
assembly and wheel hub. If clearance exists, the cause may be
one of the following:
(1) Hub assembly is set in ``LOCK'' position.
(2) Outer brake pawl is not aligned with notch in spindle.
SFA861B
SFA862B
SFA863B
SFA433AA
SFA864B
FRONT AXLE Ð Auto-lock Free-running Hub
FA-13

Removal and Installation
CAUTION:
Before removing the front axle assembly, disconnect the ABS
wheel sensor from the assembly. Then move it away from the
front axle assembly area. Failure to do so may result in dam-
age to the sensor wires and the sensor becoming inoperative.
1. Remove free-running hub assembly.
Refer to FRONT AXLE Ð Auto-lock or Manual-lock Free-run-
ning Hub.
2. Remove brake caliper assembly.
Brake hose need not be disconnected from brake caliper.
In this case, suspend caliper assembly with wire so as not to
stretch brake hose.
Be careful not to depress brake pedal, or piston will pop out.
Make sure brake hose is not twisted.
3. Remove ABS sensor.
4. Remove lock washer.
5. Remove wheel bearing lock nut with Tool.
6. Remove wheel hub and wheel bearing.
Be careful not to drop outer bearing.
7. After installing wheel hub and wheel bearing, adjust wheel
bearing preload.
Refer to ``Front Wheel Bearing'', ``ON-VEHICLE SERVICE'',
FA-5.
SFA865B
SFA470AA
SFA748BA
SFA866B
FRONT AXLE Ð Wheel Hub and Rotor Disc
FA-14

8. Separate brake disc to hub.
Inspection
Thoroughly clean wheel bearings and wheel hub.
WHEEL BEARING
+Make sure wheel bearing rolls freely and is free from noise,
crack, pitting or wear.
WHEEL HUB
+Check wheel hub for crack 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. (Models
with ABS)
Always replace sensor rotor with new one.
Pay attention to the direction of front sensor rotor as shown in
®gure.
3. Pack multi-purpose grease to hub and hub cap.
SFA193
SFA435A
SFA197
SBR400DA
SFA469A
FRONT AXLE Ð Wheel Hub and Rotor Disc
Removal and Installation (Cont'd)
FA-15

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.
6. Install hub to brake rotor.
:50-68Nzm (5.1 - 6.9 kg-m, 37 - 50 ft-lb)
FA781
SFA126
SFA199
FRONT AXLE Ð Wheel Hub and Rotor Disc
Assembly (Cont'd)
FA-16

Removal
Drain differential oil completely prior to removal.
1. Remove baffle plate and knuckle spindle.
2. Draw out drive shaft.
Draw out to remove the drive shaft in the axial direction with
the ¯at surface facing up.
SFA867B
SFA868B
SFA869B
FRONT AXLE Ð Knuckle Flange
FA-17

3. Disconnect tie-rod ends.
Refer to ST section.
4. Remove upper and lower bearing caps with inner bearing and
O-ring.
5. Remove seal guard ®xing bolts.
6. Remove seal guard.
Separate scraper, grease seal and supporting ring from knuckle
¯ange.
7. Remove knuckle ¯ange, supporting ring, grease seal and
scraper from axle case.
SFA870B
SFA871B
SFA872B
SFA873B
FRONT AXLE Ð Knuckle Flange
Removal (Cont'd)
FA-18

8. Remove bearing outer race and kingpin plug.
9. Remove oil seal from axle shaft.
Inspection
KNUCKLE FLANGE BEARING CAP
Replace knuckle ¯ange bearing if it is worn, pitted or corroded.
KNUCKLE FLANGE
Replace knuckle ¯ange if it is cracked.
Installation
1. Check kingpin plug for damage before installing. If damaged,
use a new one.
SFA874B
SFA875B
SFA870B
SFA894B
SFA877B
FRONT AXLE Ð Knuckle Flange
Removal (Cont'd)
FA-19