Among those acts, which the U.S.
Environmental Protection Agency may
presume to constitute tampering are the
acts listed below:
•
Removal of hood blanket, fender apron
absorbers, fender apron barriers,
underbody noise shields or acoustically
absorptive material.
• Tampering or rendering inoperative the
engine speed governor, to allow engine
speed to exceed manufacturer ’s
specifications.
The complexity of the diesel engine makes
it so the owner is discouraged from
attempting to perform maintenance other
than the services described in this Owner's
Manual.
If you experience difficulty starting the
engine, rough idling, excessive exhaust
smoke, a decrease in engine performance
or excess fuel consumption, perform the
following checks:
• A plugged or disconnected air inlet
system or engine air filter element.
• Water in the fuel filter and water
separator.
• A clogged fuel filter.
• Contaminated fuel.
• Air in the fuel system, due to loose
connections.
• An open or pinched sensor hose.
• Check engine oil level.
• Wrong fuel or oil viscosity for the
climatic conditions.
If these checks do not help you correct the
engine performance problem you are
experiencing, consult an authorized dealer. Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance
On January 1, 1978, Federal regulation
became effective governing the noise
emission on trucks over 10,000 lbs. (4,536
kg) GVWR (Gross Vehicle Weight Rating).
The preceding statements concerning
prohibited tampering acts and
maintenance, and the noise warranty
found in the Warranty Guide, are
applicable to complete chassis cabs over
10,000 lbs. (4,536 kg) GVWR.
FUEL TANK SELECTOR
SWITCH (If Equipped)
Your vehicle has two fuel tanks. The fuel
in each fuel tank is independently used.
Use the switch on the instrument panel to
select the left-hand or right-hand fuel tank.
The fuel gauge indicates the remaining fuel
in the selected fuel tank. See
Gauges
(page 54).
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COLD WEATHER
PRECAUTIONS
Note:
Idling in cold weather does not heat
the engine to its normal operating
temperature. Long periods of idling,
especially in cold weather, can cause a
buildup of deposits which can cause engine
damage.
Changing to a lighter grade engine oil also
makes starting easier under these
conditions. Refer to Engine oil
specifications. See Capacities and
Specifications (page 256).
Diesel fuel is adjusted seasonally for cold
temperatures. Diesel fuel which has not
been properly formulated for the ambient
conditions may gel which can clog the fuel
filters. One indication that the fuel filter(s)
may be clogged is if the engine starts, stalls
after a short time, and then does not
restart. If you have been using biodiesel,
you may need to use a fuel with lower
biodiesel content, try another brand, or
discontinue using biodiesel. Do not use
alcohol based additives to correct fuel
gelling. This may result in damage to the
fuel injectors and system. Use the proper
anti-gel and performance improvement
product. See
Capacities and
Specifications (page 256).
Your vehicle is equipped with a fuel and
water separator that recirculates fuel from
the engine to help prevent fuel filter
clogging. To avoid engine fuel starvation
during cold weather operation of
32°F
(0°C) or below, we recommended that
the fuel level in your tank should not drop
below 1⁄4 full. This helps prevent air from
entering the fuel system and stalling the
engine. Your vehicle is equipped with a selective
catalyst reduction system that uses Diesel
Exhaust Fluid (DEF) to operate properly.
You need to replenish your vehicle
’s DEF
at certain intervals. When filling your
vehicle ’s DEF tank in cold weather, you
must take special care to prevent damage
to the tank. See
Selective Catalytic
Reduction System (page 95).
In cold weather below
32°F (0°C), the
engine may slowly increase to a higher idle
speed if left idling in park (P) or neutral
(N).
If you operate your vehicle in a heavy
snowstorm or blowing snow conditions,
snow and ice can clog the engine air
induction. If this occurs, the engine may
experience a significant reduction in power
output. At the earliest opportunity, clear
all the snow or ice away from inside the air
filter assembly. Remove the air cleaner
cover and the pleated paper filter, leaving
the foam filter in and remove any snow or
ice. Make sure you install the foam filter
correctly in place. Remove any debris,
snow or ice on the foam filter by brushing
the surface with soft brush. Once you have
cleared all of the debris, reinstall the air
filter and assembly.
Do not use water, solvents, or a hard brush
for cleaning the foam filter. WARNING
To reduce the risk of vehicle damage
and/or personal burn injuries do not
start your engine with the air filter
removed and do not remove it while the
engine is running. 148
F650750 (TBC), enUSA, First Printing Driving Hints
In order to operate the engine in
temperatures of 32°F (0°C) or lower, read
the following instructions:
•
Make sure that the batteries are of
sufficient size and are fully charged.
Check other electrical components to
make sure they are in optimum
condition
• Use the proper coolant solution at the
concentration recommended
protecting the engine against damage
from freezing
• Try to keep the fuel tank full as much
as possible at the end of operation to
prevent condensation in the fuel
system
• Make sure you use proper cold weather
engine oil and that it is at its proper
level. Also, if necessary, make sure to
follow the engine oil and filter change
schedule found under the Special
operating conditions section listed in
the scheduled maintenance
information
• At temperatures of -9°F (-23°C) or
below, it is recommended that you use
an engine block heater to improve cold
engine starting
• If operating in arctic temperatures of
-20°F (-29°C)
or lower, consult your
truck dealer for information about
special cold weather equipment and
precautions
The following cold weather idling
guidelines are recommended:
• You can use Motorcraft® cetane
improvers or non-alcohol-based
cetane improvers from a reputable
manufacturer as needed.
• Maintain the engine cooling system
properly. •
Avoid shutting the engine down after
an extensive idling period. Drive your
vehicle for several miles with the
engine at normal operating
temperatures under a moderate load.
• Consider using an engine block heater.
• For extended idle times use an
approved idle speed increase device.
Winter Operating Tips for Arctic
Operation -20°F (-29°C) and
Below
The following information is a guideline
only and is not to be the only source of
possible solutions in resolving extreme
cold temperature issues.
Starting Aids WARNING
Do not use starting fluid, such as
ether, in the air intake system (see
air filter decal). Such fluid could
cause immediate explosive damage to the
engine and possible personal injury. The use of the factory engine block heater
assists in engine starting in extreme cold
ambient temperatures. See
Engine Block
Heater (page 88).
Idle Control
Your vehicle may have a factory option for
a stationary elevated idle control through
dash-mounted upfitter switches that
allows the operator to elevate the idle rpm
for extended idle periods, as well as
aftermarket equipment such as PTO
operation. You must configure this feature
even if ordered from the factory. See your
authorized dealer for required upfitting.
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F650750 (TBC), enUSA, First Printing Driving Hints
VEHICLE INSPECTION
INFORMATION
To make sure your vehicle is ready to
operate, conduct a pre-trip inspection at
the beginning of each work period. Follow
the steps listed in this section to verify a
proper vehicle inspection procedure.
WARNINGS
Exercise great caution when working
on a vehicle equipped with an
automatic fan clutch. The fan starts
in motion only after the engine coolant
reaches a predetermined temperature or
the refrigerant pressure (if equipped with
air conditioning) reaches a predetermined
setting. The fan starts at this point with no
advance warning. Never reach near, or
permit objects to protrude into, the fan
blade radius while the engine is running as
this could result in vehicle damage,
personal injury or death. WARNINGS
Do not operate the vehicle if any
suspension conditions listed in the
following charts are evident. Loss of
steering or suspension could result in
property damage, personal injury or death. If a wheel must be changed, obtain
expert tire service help. Mounting and
un-mounting of tires should only be
performed by a qualified technician using
necessary safety procedures and
equipment, otherwise the result could be
property damage, personal injury or death. Note:
Always make sure you apply the
parking brake before starting the engine. Engine compartment (with engine off)
Use the dipstick to verify the oil level is in the proper operating
range. See Engine Oil Dipstick (page 185).
Engine oil
Look through the plastic reservoir and verify the coolant level
is within the proper operating range. Do not remove the
pressure cap until the coolant has cooled. See
Engine
Coolant Check (page 190).
Engine coolant
Verify that the fluid level is in the proper operating range. See
Power Steering Fluid Check
(page 202).
Power steering fluid
Remove the master cylinder caps and inspect the fluid level.
See
Brake Fluid Check (page 201).
Brake fluid
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F650750 (TBC), enUSA, First Printing Vehicle Inspection Guide
Front brakes
Inspect for cracked, worn or frayed hoses, and that all coup-
lings are secure.
Hoses
Verify that there are no cracks or dents, and that the cham-
bers are securely mounted.
Brake chambers
Inspect for broken, loose or missing parts.
Slack adjusters
Note: The angle between the push rod and adjuster arm
should be approximately 90 degrees when the brakes are
applied. When pulled by hand, the push rod should not move
more than approximately
1 in (2.5 cm).
Verify that there are no cracks, dents, holes, and no loose or
missing bolts and that the brake linings are not worn,
dangerously thin or contaminated by lubricant.
Drums Front wheels
Inspect for damaged or bent rims. They should not have
welding repairs, and there should be no rust trails, which
indicate it is loose on the wheel.
Rims
Verify all lug nuts are present and not loose (look for rust
trails around the lug nuts). There should be no cracks radiating
from the lug bolt holes or distortion of the bolt holes.
Lug nuts
Inspect wheel hub oil seal for leaks and, if sight glass if
present, verify the oil level is adequate.
Hub oil seals
Inspect for proper lubrication level if the hubcap has a trans-
parent window. If the hubcap does not have a transparent
window, remove the rubber fill-plug and inspect for proper
level.
Oil-lubricated front
wheel bearings Fuel area
Verify the tank(s) and cap(s) are secure and that there are
no leaks from the tank(s).
Fuel tank(s)
Inspect for leaks from the tank(s).
Leaks
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F650750 (TBC), enUSA, First Printing Vehicle Inspection Guide
ENGINE OIL DIPSTICK - 6.8L
MINA
MAX
B
ENGINE OIL DIPSTICK - 6.7L
DIESEL Minimum.
A
Maximum.
B
ENGINE OIL CHECK - 6.8L
1. Make sure that your vehicle is on level ground.
2. Turn the engine off and wait 15 minutes
for the oil to drain into the oil pan.
3. Set the parking brake and ensure the gearshift is in park (P) or neutral (N). 4. Open the hood. Protect yourself from
engine heat.
5. Locate and carefully remove the engine
oil level dipstick. See Under Hood
Overview (page 183).
6. Wipe the dipstick clean. Insert the dipstick fully, then remove it again.
•If the oil level is between the lower
and upper holes, the oil level is
acceptable. DO NOT ADD OIL.
• If the oil level is below the lower
hole, add enough oil to raise the
level within the lower and upper
holes.
• Oil levels above the upper hole may
cause engine damage. Some oil
must be removed from the engine
by an authorized dealer.
7. Put the oil level dipstick back into the oil dipstick tube and ensure it is fully
seated.
Adding Engine Oil
Note: Do not remove the filler cap when
the engine is running.
Note: Do not remove the engine oil level
dipstick when the engine is running.
Note: Do not add oil further than the MAX
mark. Oil levels above the MAX mark may
cause engine damage. 185
F650750 (TBC), enUSA, First Printing MaintenanceE161560
AB E206879
AB E142732
Only use oils certified for gasoline engines
by the American Petroleum Institute (API).
An oil with this trademark symbol
conforms to the current engine and
emission system protection standards and
fuel economy requirements of the
International Lubricants Specification
Advisory Council (ILSAC), comprised of
U.S. and Japanese automobile
manufacturers.
1. Check the engine oil level.
2. If the engine oil level is not within the
normal range, add engine oil that
meets Ford specifications. See
Capacities and Specifications for more
information.
3. Remove the engine oil filler cap and use a funnel to pour the engine oil into
the opening.
4. Recheck the engine oil level. Make sure
the oil level is not above the normal
operating range on the engine oil level
dipstick.
5. Install the engine oil level dipstick and ensure it is fully seated.
6. Fully install the engine oil filler cap by turning the filler cap clockwise until
three clicks are heard or until the cap
is fully seated.
ENGINE OIL CHECK - 6.7L
DIESEL
Because it is normal to add some oil
between oil changes, check your engine oil
level each time you stop for fuel. To check
the engine oil level consistently and
accurately, the following procedure is
recommended:
1. Have engine at normal operating temperature (at least into the NORMAL
range on the engine coolant
temperature gauge). 2.
Park the vehicle on a level surface, then
turn off the engine and open the hood.
3. Allow at least 20 minutes after engine
shutdown to ensure that the oil
contained in the upper parts of the
engine has returned to the oil pan.
4. Protecting yourself from engine heat, pull out the dipstick, wipe it clean and
reinsert fully.
5. Read oil level on both sides of dipstick
and use highest level (reading) for the
actual engine oil level. 6. Maintain the oil level within the
crosshatch area on the dipstick by
adding oil as required. Do not overfill
the oil past the maximum line as
depicted by the arrow.
Engine Oil Specifications
To help achieve acceptable engine
performance and durability, it is important
that only engine oils of good quality are
used in your diesel engine and it is changed
at the recommended interval. For normal
or severe service, use Motorcraft® oil or an
equivalent oil conforming to Ford
specifications as listed in the Capacities
and Specifications chapter. See
Capacities and Specifications (page
256). It is important to use these oils
because they are compatible with the
emission control equipment of your vehicle
to meet the more stringent emission
standards.
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8.
Fully tighten all of the bolts to between
3–4 lb.ft (4.5–6 Nm) in the sequence
shown.
9. Record the engine mileage and update
the service log accordingly.
OIL CHANGE INDICATOR
RESET
Use the information display controls on
the steering wheel to reset the oil change
indicator. See
General Information
(page 62).
ENGINE COOLANT CHECK -
6.8L WARNINGS
Do not add engine coolant when the
engine is hot. Steam and scalding
liquids released from a hot cooling
system can burn you badly. Also, spilling
coolant on hot engine parts can burn you. Do not put engine coolant in the
windshield washer fluid container. If
sprayed on the windshield, engine
coolant could make it difficult to see
through the windshield. WARNINGS
To reduce the risk of personal injury,
make sure the engine is cool before
unscrewing the coolant pressure
relief cap. The cooling system is under
pressure. Steam and hot liquid can come
out forcefully when you loosen the cap
slightly. Do not add coolant further than the
MAX
mark.
When the engine is cold, check the
concentration and level of the engine
coolant at the intervals listed in the
scheduled maintenance information. See
Scheduled Maintenance
(page 314).
Note: Make sure that the coolant level is
between the
MIN and MAX marks on the
coolant reservoir.
Note: Coolant expands when it is hot. The
level may extend beyond the
MAX mark.
The coolant concentration should be
maintained within 48% to 50%, which
equates to a freeze point between -30°F
(-34°C) and -34°F (-37°C).
Note: For best results, coolant
concentration should be tested with a
refractometer such as Robinair® Coolant
and Battery Refractometer 75240. We do
not recommend the use of hydrometers or
coolant test strips for measuring coolant
concentrations.
Note: Automotive fluids are not
interchangeable. Do not use engine coolant
or antifreeze or windshield washer fluid
outside of its specified function and vehicle
location.
Adding Engine Coolant
Note: Do not use stop leak pellets, cooling
system sealants, or additives as they can
cause damage to the engine cooling or
heating systems. This damage would not
be covered under your vehicle ’s warranty.
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