Ford Super Duty (2018 year). Manual — part 53

POWER TAKE-OFF

WARNING

Use of auxiliary equipment that
exceeds the maximum Power
Take-Off (PTO) load specified in the

Ford Truck Body Builders Layout Book can
adversely affect the performance of the
powertrain system. Refer to the Body
Builders Layout Book for instructions about
the appropriate installation of additional
equipment.

Auxiliary equipment called power take-off,
or PTO, is often added to the engine or
transmission to operate utility equipment.
Examples include a wheel-lift for tow
trucks, cranes, tools for construction or tire
service, and pumping fluids. PTO
applications draw auxiliary horsepower
from the powertrain, often while the
vehicle is stationary. In this condition, there
is limited cooling air flow through the
radiator and around the vehicle that
normally occurs when a vehicle is moving.
The aftermarket PTO system installer,
having the most knowledge of the final
application, is responsible for determining
whether additional chassis heat protection
or powertrain cooling is required, and
alerting the user to the safe and proper
operation.

Ford Super Duty Vehicles are approved for
use as a stationary (including split shaft
capability) or mobile power source, within
limits and operating guidelines detailed in
the Ford Truck Body Builders Layout Book,
found at www.fleet.ford.com/truckbbas,
and through the Ford Truck Body Builders
Advisory Service.

USING FOUR-WHEEL DRIVE

Note: For important information regarding
the safe operation of this type of vehicle,
see General Information in the Wheels and
Tires chapter.

Note: Do not use 4H or 4L mode on dry,
hard surfaced roads. Doing so can produce
excessive noise, increase tire wear and may
damage drive components. 4X4 mode is
only intended for consistently slippery or
loose surfaces. Use of 4L mode on these
surfaces may produce some noise (such as
occasional clunks), but will not damage
drive components.

Note: If 4X4 low is selected while the
vehicle is moving above 3 mph (5 km/h),
the 4WD system will not perform a shift.
This is normal and should be no reason for
concern. Refer to Shifting to or from 4L (4X4
Low) for proper operation.

Note: You can switch on and switch off the
electronic locking differential by pulling the
4WD control (4WD vehicles) or turning the
electronic locking differential control (2WD
vehicles). See Electronic Locking
Differential (page 225).

Manual Shift On Stop (MSOS)
4WD system

(If Equipped)

Note: The vehicle should not be driven in
4X4 High or 4X4 Low modes with the hub
locks set to FREE as this condition may
damage driveline system components.

LOCK

E

E

R

F

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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.

Electronic Shift-On-the-Fly
(ESOF) 4WD system

(If Equipped)

Note: If 4X4 Low is selected while the
vehicle is moving above 3 mph (5 km/h),
the 4WD system will not perform a shift.
This is normal and should be no reason for
concern. Refer to Shifting to or from 4L (4X4
Low) for proper system operation.

Note: Auto-manual hub locks can be
manually overridden by rotating the hub lock
control from AUTO to LOCK.

LOCK

O

T

U

A

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(If Equipped)

For proper operation, make sure that each
hub is fully engaged and that both hub
locks are set to the same position (both
set to LOCK or both set to AUTO). To
engage LOCK, turn the hub locks
completely clockwise; to engage AUTO,
turn the hub locks completely
counterclockwise.

The ESOF 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 4x2, 4x4 High or 4x4 Low
operation.

•

uses auto-manual hub locks that can
be engaged and disengaged
automatically based on the 4x4 mode
selected.

•

will increase fuel economy when used
in the hub lock's recommended AUTO
mode.

4WD Indicator Lights

Note: When a 4X4 system fault is present,
the system will typically remain in whichever
4X4 mode was selected prior to the fault
condition occurring. It will not default to 4X2
in all circumstances. When this warning is
displayed, have your vehicle serviced by an
authorized dealer.

4X2

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Momentarily illuminates when
2H is selected.

4X4 HIGH

E181779

Continuously illuminates when
4H is selected.

4X4 LOW

E181780

Continuously illuminates when
4L is selected.

CHECK 4X4

Displays when a 4X4 fault is
present.

Using a Manual Shift On Stop
(MSOS) 4WD system

(If Equipped)

Note: High shift efforts may be encountered
when attempting to shift into and out of 4x4
modes. It is recommended to allow the
vehicle to roll at a speed below 3 mph
(5 km/h) when shifting between modes.

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2H (4X2)

For general on-road driving. Sends power
to the rear wheels only and should be used
for street and highway driving. Provides
optimal smoothness and fuel economy at
high speeds

4H (4X4 High)

Used for extra traction such as in snow or
icy roads or in off road situations. This
mode is not intended for use on dry
pavement.

(If Equipped)

N (Neutral)

Only used when towing the vehicle. No
power to front or rear wheels.

4L (4X4 Low)

Uses extra gearing to provide maximum
power to all four wheels at reduced
speeds. Intended only for off road
applications such as deep sand, steep
grades or pulling heavy objects.

Shifting between system modes

Note: Do not perform these operations if
the rear wheels are slipping or when
applying the accelerator pedal.

Note: Some noise may be heard as the 4x4
system shifts or engages. This is normal. In
order to reduce engagement noise, it is
recommended that all shifts be performed
at speeds below3 mph (5 km/h).

Note: The vehicle should not be driven in
4X4 High with the hub locks disengaged as
this condition may damage driveline system
components.

Engage the locking hubs by rotating the
hub lock control from FREE to LOCK, then
move the transfer case lever from 2H to
4H at a stop or a vehicle speed below
3 mph (5 km/h).

Move the transfer case lever from 4H to
2H at a stop or a vehicle speed below
3 mph (5 km/h), then disengage the
locking hubs (optional) by rotating the hub
lock control from LOCK to FREE.

For proper operation, make sure that both
hubs are set to either FREE or LOCK.

Shifting to or from 4L (4X4 Low)

1.

Bring the vehicle to a stop or a speed
below 3 mph (5 km/h).

2. Place the transmission in N (Neutral).

3. Move the transfer case shift lever

through N (Neutral) directly to the
desired position.

4. If the transfer case does not, or only

partially moves to the desired position,
perform a shift with the transmission
in N (Neutral) and the vehicle rolling at
a speed below 3 mph (5 km/h).

5. If shifting to 2H with the vehicle at a

complete stop, disengage the locking
hubs (optional) by rotating the hub
lock control from LOCK to FREE.

Using the N (Neutral) position

WARNING

Always set the parking brake and
leave your vehicle with the
transmission in park (P).

E233846

The transfer case neutral position overrides
the transmission and puts the vehicle in
neutral regardless of transmission gearshift
lever position. The vehicle can move
forward or backwards.

This position should only be used when
towing the vehicle.

(If Equipped)