4X4 Systems - Ford 2012 Super Duty Pickups F-250 User Manual

2012
Manual Shift-On-Stop (MSOS) with
Manual-locking Hubs
• Simple, reliable design that is highly regarded
by serious off-roaders and those working at
off-road job sites
• To engage the front axle, the operator must
stop, exit the vehicle and rotate both hublock
selector knobs to the LOCK position, then
the desired drive range is selected on the
transfer case
• Floor-mounted transfer case shift lever is used
to move between available drive settings: 2H
(2WD), 4H (4x4 High), N (Neutral) and 4L
(4x4 Low)
• When the hublocks are returned to the FREE
position, the drive axle components do not
rotate while driving, which reduces wear and
frictional drag
Super Duty
4x4 Manual
Shift Pattern
NOTE: The vehicle should not be operated
in 4H or 4L with the manual-locking hubs
set in the FREE position as this could result
in damage to certain driveline components.
Operate the vehicle in 4H or 4L only with
manual-locking hubs set in the LOCK position.
22
F-250/F-350/F-450
Super Duty Pickups
Performance/Handling

4x4 Systems

Super Duty
Manual-locking
Front Hub
esourcebook.dealerconnection.com
RE&T: 2012 Source Book
Electronic Shift-On-the-Fly (ESOF)
• Easy-to-use rotary control switch mounted
in the instrument panel is used to select
drive settings, eliminating the need to stop
and back up to unlock the front hubs
• Electric motor shifts the transfer case into
selected drive setting
• Front hublock selectors are marked with
AUTO and LOCK. Manual override capability
lets the driver manually LOCK hubs if
preferred, but the Continuous Vacuum
Hublock (CVH) design engages the front
hubs, providing virtually silent operation
• CVH system optimizes fuel efficiency
because all front driveline components
are disconnected at the wheels when the
system is in 2WD operation
NOTE: Both of these 4x4 systems are
"part-time" systems designed to provide
enhanced traction on reduced traction
surfaces only. Operating on normal or high-
traction surfaces can result in transfer case
damage, increased tire wear and decreased
fuel efficiency.
Dash-mounted
Rotary Switch
Super Duty
Automatic-locking
Front Hub with
Manual Override
June 2011