Tractor-coupling system
Inspect for loose or missing mounting brackets, clamps, bolts
or nuts. Verify solid attachment of both fifth wheel and the
slide mounting.
Mounting bolts
Inspect for cracks or breaks in the platform structure.
Platform
Verify engagement of the safety latch.
Safety latch
Verify the safety latch is in the engaged position, and that
any safety latch is in place.
Release arm
Verify the kingpin is not bent or worn, the apron lies flat on
the fifth-wheel skid plate and that the visible part of the apron
is not bent, worn, cracked or broken.
Kingpin and apron Rear suspension
Inspect for missing, broken or shifted leaves, or leaves that
may be in contact with (or nearly contacting) a tire, rim, brake
drum, frame or body component.
Springs (if equipped)
Inspect for any cracked or broken spring hangers; broken
missing or loose bolts; missing or damaged bushings; broken,
loose or missing axle mounting parts.
Spring mounts (if
equipped)
Verify torsion arm is not cracked, broken or missing.
Torsion arm and shock
absorbers
Inspect the shock absorber for cracks or leaks. There should
be no missing or broken mounting bolts or worn bushings.
Inspect for missing, broken or leaking components.
Air suspension (if
equipped) Inspect for any cracked, broken or loose bolts; missing or
damaged bushings; broken, loose or missing axle mounting
parts.
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Rear 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 Rear wheels
Check for even separation of dual wheels, and that the tires
are not touching each other.
Spacers
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
Trailer
If you are pulling a trailer, perform an
inspection of the trailer similar to that of
the tractor. The inspection should follow
trailer manufacturer recommendations
and should include at a minimum: general
condition, landing gear, doors, sides, lights,
reflectors, suspension, brakes, tires,
wheels, cargo placement, stability and
tie-downs. Transmission WARNING:
If the unit starts in gear
and/or the neutral start switch is not
functioning correctly, the vehicle may
inadvertently move which could result
in property damage, personal injury or
death.
Regularly inspect the transmission's
neutral start switch. The engine should
only start in neutral (N) or park (P) (if
equipped with a park position).
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GENERAL INFORMATION
WARNING: Making modifications
to various parts, components and
systems of the vehicle, such as brake and
steering systems, can adversely affect
the quality, reliability and operation of
your vehicle and could result in property
damage, personal injury or death. Such
modifications must be avoided. WARNING:
Failure to properly
perform maintenance and servicing
procedures could result in vehicle
damage, personal injury or death. WARNING:
Take care when
performing any maintenance, system
check or service on your vehicle. Some
of the materials may also be hazardous
if used, serviced or handled improperly
and could result in property damage,
personal injury or death.
If the owner or operator of the vehicle is a
skilled technician and intends on
performing the vehicle maintenance and
service, he is strongly urged to purchase a
service manual.
Always use care when performing vehicle
maintenance, repairs or system checks.
Improper or incomplete service could result
in your vehicle not working properly which
may result in personal injury or damage to
your vehicle or equipment. It is the
operator ’s responsibility to see that your
vehicle receives proper care and
maintenance. If you have any questions
about performing service, have the service
done by a qualified technician.
To help you service your vehicle, we
provide scheduled maintenance
information which makes tracking routine
service easy. See
Scheduled
Maintenance (page 321). If your vehicle requires professional service,
an authorized dealer can provide the
necessary parts and service. Check your
warranty information to find out which
parts and services are covered.
Use only recommended fuels, lubricants,
fluids and service parts conforming to
specifications. Motorcraft® parts are
designed and built to provide the best
performance in your vehicle.
Servicing Guidelines
WARNING: The use of inferior parts
can adversely affect the quality and
reliability of your vehicle and could result
in property damage, personal injury or
death.
When servicing your vehicle:
• Always wear safety glasses for eye
protection.
• Always set the parking brake or chock
the wheels.
• Always use support stands, not a jack,
when working under a raised vehicle.
• Always turn off the ignition unless a
procedure requires the engine to be
running.
• Always avoid contact with hot metal
parts. Allow the components to cool
before working with, or around, them.
• Always operate the engine in a
well-ventilated area.
• Do not wear loose-fitting clothing,
hanging jewelry, watches or rings.
• Do not smoke.
• Do not work on the brakes or the clutch
unless you take the proper precautions
to avoid inhaling friction material dust.
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Quality service parts are available through
an authorized dealer. If dealer parts are not
used, make sure the replacement parts are
of equivalent quality.
Working with the Engine Off
1. Set the parking brake and shift to
neutral (N) or park (P).
2. Switch off the engine.
3. Block the wheels.
Working with the Engine On WARNING: To reduce the risk of
vehicle damage and/or personal burn
injuries, do not start your engine with the
air cleaner removed and do not remove
it while the engine is running.
1. Set the parking brake and shift to neutral (N) or park (P).
2. Block the wheels
Supporting Your Vehicle for
Service WARNING:
Do not use a jack when
working under a vehicle. It may give way,
causing the vehicle to fall and result in
property damage, personal injury or
death. Always use floor stands to
support the vehicle.
Prepare your vehicle for service repairs by
doing the following:
1. Park your vehicle on a level, concrete floor.
2. Set the parking brake and block the wheels to prevent your vehicle from
moving.
3. Select a jack with a rated capacity sufficient to lift and hold up your
vehicle. 4.
Raise your vehicle with the jack applied
to the axle(s). Do not use the bumper
as a lifting point.
5. Support your vehicle with floor stands under the axle(s). When servicing the
axle or the suspension, support your
vehicle with floor stands under the
frame side-members, preferably
between the axles.
OPENING AND CLOSING THE
HOOD WARNING:
Before opening the
hood, fully apply the parking brake, shift
into park (P) or neutral (N) and switch
the ignition off. WARNING:
Do not stand under the
hood when you raise or lower it. Failure
to follow this warning could result in
serious personal injury or death. WARNING: If the engine is running
while the hood is open, stay clear of
moving engine components. Failure to
follow this warning could result in serious
personal injury or death.
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UNDER HOOD OVERVIEW - 6.7L DIESEL
Engine compartment fuse box. See Fuses (page 199).
A
Windshield washer fluid reservoir. See
Washer Fluid Check (page 248).
B
Automatic transmission fluid dipstick. See
Automatic Transmission Fluid
Check (page 241).
C
Secondary Cooling System Reservoir. See Engine Coolant Check (page 232).
D
Engine coolant reservoir.
See Engine Coolant Check (page 232).
E
Secondary fuel filter. See
Draining the Fuel Filter Water Trap (page 231).
F
Engine oil separator. See Changing the Engine Oil and Oil Filter (page 225).
G
Engine oil filler cap.
See Engine Oil Check (page 223).
H
Brake fluid reservoir.
See Brake Fluid Check (page 243).
I
Power steering fluid reservoir. See
Power Steering Fluid Check (page 244).
J
Air brake compressor. See
Brake System Inspection (page 254).
K
Engine oil dipstick.
See Engine Oil Dipstick (page 223).
L
Air cleaner assembly. See Changing the Engine Oil and Oil Filter (page 225).
M
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UNDER HOOD OVERVIEW - 7.3L
Engine compartment fuse box. See Fuses (page 199).
A
Engine oil dipstick. See
Engine Oil Dipstick (page 223).
B
Windshield washer fluid reservoir. See
Washer Fluid Check (page 248).
C
Automatic transmission fluid dipstick. See
Automatic Transmission Fluid
Check (page 241).
D
Engine coolant reservoir. See
Engine Coolant Check (page 237).
E
Engine oil filler cap.
See Engine Oil Check (page 224).
F
Brake fluid reservoir.
See Brake Fluid Check (page 243).
G
Power steering fluid reservoir. See
Power Steering Fluid Check (page 244).
H
Air cleaner assembly. See
Changing the Engine Air Filter (page 229).
I
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ENGINE OIL DIPSTICK - 6.7L
DIESEL
Minimum.
A
Nominal.
B
Maximum.
C
ENGINE OIL DIPSTICK - 7.3L Minimum.
A
Nominal.
B
Maximum.
C
ENGINE OIL CHECK - 6.7L
DIESEL
To check the engine oil level consistently
and accurately, do the following: 1.
Make sure the parking brake is on. Make
sure the transmission is in park (P) or
neutral (N).
2. Run engine until it reaches normal operating temperature.
3. Make sure that your vehicle is on level ground.
4. Switch the engine off and wait 15 minutes for the oil to drain into the oil
pan. Checking the engine oil level too
soon after you switch the engine off
may result in an inaccurate reading.
5. Open the hood. See Opening and
Closing the Hood (page 219).
6. Remove the dipstick and wipe it with a clean, lint-free cloth. See
Under
Hood Overview (page 221).
7. Replace the dipstick and remove it again to check the oil level. See
Engine Oil Dipstick
(page 223).
8. Make sure that the oil level is between
the maximum and minimum marks. If
the oil level is at the minimum mark,
add oil immediately. See
Engine Oil
Capacity and Specification (page
290).
9. If the oil level is correct, replace the dipstick and make sure it is fully seated.
Note: Do not remove the dipstick when the
engine is running.
Note: If the oil level is between the
maximum and minimum marks, the oil level
is acceptable. Do not add oil.
Note: The oil consumption of new engines
reaches its normal level after approximately
3,000 mi (5,000 km)
.
Adding Engine Oil WARNING: Do not remove the filler
cap when the engine is running.
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change as you drive. This is to be expected
as being normal to the operation of your
vehicle. High levels of fan noise might also
be heard when your engine is first started,
and should normally decrease after driving
for a short time.
Fail-Safe Cooling
Fail-safe cooling allows you to temporarily
drive your vehicle before any incremental
component damage occurs. The fail-safe
distance depends on ambient
temperature, vehicle load and terrain.
How Fail-Safe Cooling Works
If the engine begins to overheat, the
coolant temperature gauge moves toward
the red zone:
A warning lamp illuminates and
a message may appear in the
information display.
If the engine reaches a preset
over-temperature condition, the engine
switches to alternating cylinder operation.
Each disabled cylinder acts as an air pump
and cools the engine.
When this occurs, your vehicle still
operates, however:
• Engine power is limited.
• The air conditioning system turns off.
Continued operation increases the engine
temperature, causing the engine to
completely shut down. Your steering and
braking effort increases in this situation.
When the engine temperature cools, you
can re-start the engine. Have your vehicle
checked as soon as possible to minimize
engine damage. When Fail-Safe Mode Is Activated WARNING: Fail-safe mode is for
use during emergencies only. Operate
your vehicle in fail-safe mode only as
long as necessary to bring your vehicle
to rest in a safe location and seek
immediate repairs. When in fail-safe
mode, your vehicle will have limited
power, will not be able to maintain
high-speed operation, and may
completely shut down without warning,
potentially losing engine power, power
steering assist, and power brake assist,
which may increase the possibility of a
crash resulting in serious injury. WARNING:
Do not remove the
coolant reservoir cap when the engine is
on or the cooling system is hot. Wait 10
minutes for the cooling system to cool
down. Cover the coolant reservoir cap
with a thick cloth to prevent the
possibility of scalding and slowly remove
the cap. Failure to follow this instruction
could result in personal injury.
Your vehicle has limited engine power
when in the fail-safe mode, drive your
vehicle with caution. Your vehicle does not
maintain high-speed operation and the
engine may operate poorly.
Remember that the engine is capable of
shutting down to prevent engine damage.
In this situation:
1. Pull off the road as soon as safely possible and switch the engine off.
2. If you are a member of a roadside assistance program, we recommend
that you contact your roadside
assistance service provider.
3. If this is not possible, wait a short period for the engine to cool.
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