FORD 2002 F-550 v.2 - Manual (Page 147)

Manual 4x4 system (if equipped)
The 4WD system is engaged or
disengaged by rotating the control
for both front wheel hub locks from
the FREE or LOCK position, then
manually engaging or disengaging
the transfer case with the
floor-mounted shifter. For increased
fuel economy in 2WD, rotate both
hub locks to the FREE position.
• For proper operation, make
sure that the arrow and the
indicator dot on the hub are
aligned, and that both hub
locks are set to the same
position (both set to LOCK or both set to FREE).
Electronic shift on the fly (ESOF) 4x4 system (if equipped)
If equipped with the Electronic Shift 4WD System, and 4WD Low
is selected while the vehicle is moving, the 4WD system will not
engage. This is normal and should be no reason for concern.
Before 4WD Low can be engaged, the vehicle must be brought to
a complete stop, the brake pedal depressed and the transmission
placed in N (Neutral ) (on automatic transmissions or the clutch
pedal depressed on manual transmissions).
The 4WD system:
• provides 4x4 High engagement and disengagement while the vehicle is
moving.
• is operated by a rotary control located on the instrument panel that
allows you select 2WD, 4x4 High or 4x4 Low operation.
• uses auto-manual hub locks that can be engaged and disengaged
automatically based on the 4x4 mode selected.
Driving
147