Nissan Frontier D22. Manual — part 717

AUTO-LOCK FREE-RUNNING HUB

FAX-13

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FAX

Ratchet noise in hub when driving in extremely
cold weather.

The viscosity of differential oil grows
higher in extreme cold, increasing
the possibility that one hub may
lock. A lower viscosity differential
fluid may be required for extreme
cold temperatures. See owner's
manual

Shift the transfer case into 4H and drive
the vehicle for 10 minutes or more to warm
the differential oil. Then shift to 2WD and
back up in a straight line for at least 2-3
meters (7-10 feet) to disengage the hubs.

Continual ratchet noise in one wheel when mov-
ing forward.

A hub may be mechanically locked
either by damage or incorrect instal-
lation

Remove hubs and inspect. Refer to

FAX-

12, "Inspection"

. Pay special attention to

the hub opposite the noisy side. The
ratcheting does not necessarily cause
damage to the good hub.

Symptom

Possible cause

Repair order

FAX-14

WHEEL HUB AND ROTOR DISC

WHEEL HUB AND ROTOR DISC

PFP:40202

Removal and Installation

EDS0013O

CAUTION:

If equipped with ABS, disconnect the ABS wheel sensor from the assembly before removing the front
axle assembly. Then move it away from the front axle assembly area. Failure to do so may result in
damage to the sensor wires and the sensor becoming inoperative.

1.

Remove free-running hub assembly (4WD models).
Refer to

FAX-11, "Removal and Installation"

.

2.

Remove brake caliper assembly without disconnecting hydraulic
line.

CAUTION:

●

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 lock washer (4WD models).

4.

Remove wheel bearing lock nut.
2WD Models: With suitable tool
4WD Models: With Tool

5.

Remove wheel hub and wheel bearings.

CAUTION:

Be careful not to drop outer bearing.

6.

After installing wheel hub and wheel bearings, adjust wheel
bearing preload.
Refer to

FAX-5, "PRELOAD ADJUSTMENT (2WD MODELS)"

or

FAX-6, "PRELOAD ADJUSTMENT (4WD MODELS)"

.

SFA825B

SFA364BB

AFA141

SFA827B

WHEEL HUB AND ROTOR DISC

FAX-15

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FAX

Disassembly

EDS0013P

●

Remove grease seal and bearing outer races with suitable brass
bar.

Inspection

EDS0013Q

Thoroughly clean wheel bearings and wheel hub.

WHEEL BEARINGS

●

Make sure wheel bearings roll freely and are free from noise, cracks, pitting and wear.

WHEEL HUB

●

Check wheel hub for cracks by using a magnetic exploration or dyeing test.

Assembly

EDS0013R

1.

Install bearing races with Tool until it is fully seated in hub.

2.

Install the sensor rotor using suitable drift and press.
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 (2WD
models).

FA858

WAX028

SBR400DA

AFA122

FAX-16

WHEEL HUB AND ROTOR DISC

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.

SFA459B