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