Ford F-350 (2017 year). Manual — part 84

Do not use supplemental transmission
fluid additives, treatments or cleaning
agents. The use of these materials may
affect transmission operation and result
in damage to internal transmission
components.

TRANSFER CASE FLUID
CHECK

(If Equipped)

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1.

Clean the filler plug.

2. Remove the filler plug and inspect the

fluid level.

3. Add only enough fluid through the filler

opening so that the fluid level is at the
bottom of the opening.

Only use fluid that meets Ford
specifications. See Capacities and
Specifications (page 411).

BRAKE FLUID CHECK

WARNINGS

Do not use any fluid other than the
recommended brake fluid as this will
reduce brake efficiency. Use of

incorrect fluid could result in the loss of
vehicle control, serious personal injury or
death.

Only use brake fluid from a sealed
container. Contamination with dirt,
water, petroleum products or other

materials may result in brake system
damage or failure. Failure to adhere to this
warning could result in the loss of vehicle
control, serious personal injury or death.

Do not allow the fluid to touch your
skin or eyes. If this happens, rinse the
affected areas immediately with

plenty of water and contact your physician.

A fluid level between the MAX and
MIN lines is within the normal
operating range and there is no need

to add fluid. A fluid level not in the normal
operating range could compromise the
performance of the system. Have your
vehicle checked immediately.

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To avoid fluid contamination, the reservoir
cap must remain in place and fully tight,
unless you are adding fluid.

Only use fluid that meets Ford
specifications. See Capacities and
Specifications (page 411).

POWER STEERING FLUID
CHECK

Check the power steering fluid. See
Scheduled Maintenance (page 567). If
adding fluid is necessary, use only
MERCON LV ATF

Note: This procedure is for vehicles with
gasoline engines. Vehicles with diesel
engines are similar. See Under Hood
Overview in your diesel supplement.

Check the fluid level when it is at ambient
temperature.

1.

Check the fluid level in the reservoir. It
should be between the MIN and MAX
range. Do not add fluid if the level is
within this range.

2. If the fluid level is low, add fluid to bring

the fluid level up to between the MIN
and MAX range.

3. Switch the engine on.
4. While the engine idles, turn the steering

wheel left and right several times.

5. Switch the engine off.
6. Recheck the fluid level in the reservoir.

Do not add fluid if the level is between
the MIN and MAX range.

7.

If the fluid is low, add fluid in small
amounts, continuously checking the
level until it is between the MIN and
MAX range. For proper fluid type, See
Capacities and Specifications (page
411). Be sure to put the cap back on the
reservoir.

WASHER FLUID CHECK

WARNING

If you operate your vehicle in
temperatures below 40°F (5°C), use
washer fluid with antifreeze

protection. Failure to use washer fluid with
antifreeze protection in cold weather could
result in impaired windshield vision and
increase the risk of injury or accident.

Add fluid to fill the reservoir if the level is
low. Only use a washer fluid that meets
Ford specifications. See Capacities and
Specifications (page 411).

State or local regulations on volatile
organic compounds may restrict the use
of methanol, a common windshield washer
antifreeze additive. Washer fluids
containing non-methanol antifreeze
agents should be used only if they provide
cold weather protection without damaging
the vehicle’s paint finish, wiper blades or
washer system.

DRAINING THE FUEL FILTER
WATER TRAP - 6.7L DIESEL

WARNING

Do not dispose of fuel in the
household refuse or the public
sewage system. Use an authorized

waste disposal facility.

Your vehicle has a diesel fuel conditioner
module. The module is mounted between
the outboard side of the fuel tank and the
frame rail.

Note: The module is at the front of the fuel
tank or at the front of the aft-axle fuel tank
on some models.

You should drain water from the
module assembly whenever the
warning light illuminates or a

message appears in the information
display advising you to drain the water
separator. This occurs when approximately
6.76 fl oz (200 ml) of water accumulates
in the module. If you allow the water level
to exceed this level, the water may pass
through to the engine and may cause fuel
injection equipment damage.

Draining the Diesel Fuel
Conditioner Module

1.

Switch the engine off.

2. Access the underside of your vehicle.

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2

3. The diesel fuel conditioner module is

on the left-hand frame rail.

3

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4. Drain the diesel fuel conditioner

module. Turn the drain plug
counterclockwise until it stops. Do not
use any tools to loosen the drain plug.
Drain the filter, approximately 0.5 gal
(2 L), into an appropriate container. Do
not re-use the fuel drained from the
module.

5. Tighten the drain plug, turn it clockwise

until it stops and you feel a strong
resistance. Do not use any tools to
tighten the drain plug.

6. Switch the ignition off for 30 seconds

and then switch the ignition off. Repeat
this operation six times in a row to
purge any trapped air from the fuel
system.

FUEL FILTER - 6.2L/6.8L

Your vehicle is equipped with a lifetime
fuel filter that is integrated with the fuel
tank. Regular maintenance or replacement
is not needed.

CHANGING THE 12V BATTERY

WARNINGS

Batteries normally produce explosive
gases which can cause personal
injury. Therefore, do not allow

flames, sparks or lighted substances to
come near the battery. When working near
the battery, always shield your face and
protect your eyes. Always provide correct
ventilation.

When lifting a plastic-cased battery,
excessive pressure on the end walls
could cause acid to flow through the

vent caps, resulting in personal injury and
damage to the vehicle or battery. Lift the
battery with a battery carrier or with your
hands on opposite corners.

Keep batteries out of reach of
children. Batteries contain sulfuric
acid. Avoid contact with skin, eyes or

clothing. Shield your eyes when working
near the battery to protect against possible
splashing of acid solution. In case of acid
contact with skin or eyes, flush
immediately with water for a minimum of
15 minutes and get prompt medical
attention. If acid is swallowed, call a
physician immediately.

Battery posts, terminals and related
accessories contain lead and lead
compounds. Wash hands after

handling.