
ADD and FULL marks indicated on the hub. Do not overfill. Overfilling
can result in oil on brake linings.
Refer to your general maintenance information section for fluid level
checks and change intervals for the front hubs.
Your front hubs may be filled with an optional synthetic fluid which
allows use of the extended service intervals. A green colored filler plug
identifies use of the synthetic fluid.
Tire/wheel rim selection and inflation pressures
Tire Size, Load
Range (PR)Wheel Width
(in.) and TypeSingle Rear Axle: Max. Tire
and Wheel Capacity kg. (lb.)
kPa @ (psi) (cold) by Axle
Tubeless Type Radial Ply Front Rear
10R22.5 F (12) 7.50 10H
(I.S.O.)10 300 (4 671)
698 10019 280 (8 745)
698 100
10R22.5 G (14) 7.50 10H
(I.S.O.)10 300 (4 671)
698 10021 000 (9 525)
711 115
11R22.5 G (14) 8.25 10H
(I.S.O.)12 080 (5 478)
703 10522 520 (10 213)
703 105
245/70R19.5 6.75 8H (I.S.O.) 10 300 (4 671)
698 10019 280 (8 745)
698 100
11X20 (16) 7.50 10H
(I.S.O.)12 080 (5 478)
703 10522 520 (10 213)
703 105
MINOR TROUBLESHOOTING GUIDE
Diesel engine
For troubleshooting information, refer to the diesel engine operator’s
manual.
If engine won’t crank
For troubleshooting information, refer to the engine operator’s manual.
If engine cranks but won’t start
For troubleshooting information, refer to the engine operator’s manual.
If engine runs hot
For troubleshooting information, refer to the engine operator’s manual.
Maintenance and Specifications
214

If fuses burn out
Burned-out or“blown-out”fuses or circuit breaker tripping (if equipped)
usually indicate an electrical short circuit, although a fuse may
occasionally fail from vibration. Insert a second fuse or reset the breaker
(if equipped). If this fuse immediately burns out or the breaker (if
equipped) trips and you cannot locate the fuse, return your vehicle to
your dealer for a circuit check.
If lamp bulbs burn out
Repeated lamp burn-out usually indicates a loose connection, either at
the lamp socket, the system ground or a malfunctioning voltage
regulator. If examination does not indicate the cause of the trouble,
return your vehicle to your dealer for inspection.
If headlamps flash on and off
If headlamps flash on and off at regular intervals, the system circuit
breaker (if equipped) is operating, indicating a short circuit or overload.
Take your vehicle to your dealer for a circuit check.
ENGINE COOLANT AND OIL REFILL CAPACITIES
Engine Engine coolant
(approximate
capacity)Engine oil
(approximate
capacity)
Caterpillar 3126 B 23.7L (25.0 quarts)
1
Cummins B 5.9L 23.1L (24.4 quarts)1
Power Stroke 7.3L 18.0L (19.0 quarts) 18.0L (19.0 quarts)2
1
Refer to the engine operator’s manual for engine oil refill capacities.
2Engine oil and filter change.
POWER STEERING FLUID CAPACITIES
GVWR Axle application System capacity
11 794/13 608 kg
(26 000/30 000 lb.)3 856/4 082 kg
(8 000/9 000 lb.)4.3L (4.5 quarts)
14 969 kg (33 000 lb.) 5 443 kg (12 000 lb.) 4.5L (4.7 quarts)
Maintenance and Specifications
215

Item Ford Part NameFord Part
NumberFord
Specification
Automatic
transmissionRefer to the Allison Automatic Transmission
Operator’s manual.
Rear axle and
front wheel
bearings (oil
filled)
1
Motorcraft SAE
80W-90 Premium
Rear Axle
LubricantXY-80W90-QL WSP-M2C197-A
Motorcraft SAE
75W-140 High
Performance Rear
Axle LubricantXY-75W140 WSL-M2C192-A
Manual
transmission
1Motor oil SAE 50
(above -18°C
[0°F])2WSE-M2C908-A
Motorcraft SAE 30
Super Duty Motor
oil (below -18°C
[0°F])XO-30-QSD
3WSS-M2C171-C
Engine oil
-7.3L Power
Stroke engine
1, 4
Motorcraft Super
Duty Motor oilXO-15W40-QSD3
XO-10W30-QSD3
WSS-M2C171-C
Motorcraft SAE
0W-30 Super All
Season Motor oil
(synthetic)XO-0W30-LAS
Engine oil
-Cummins B and
Caterpillar 3126
B enginesRefer to the appropriate engine operator’s manual.
Maintenance and Specifications
220

Item Ford Part NameFord Part
NumberFord
Specification
Engine coolant
-7.3L Power
Stroke
5
Motorcraft
Premium Engine
Coolant
(green-colored)VC-4–A (US) or
CXC-10
(Canada)ESE-M97B44-A
Motorcraft
Premium Gold
Engine Coolant
(yellow-colored)VC-7–A WSS-M97B51–A1
Engine coolant
additive
6Motorcraft Heavy
Duty Cooling
System AdditiveFW-16 ESN-M99B169–A
Engine coolant
-Caterpillar 3126
B engine and
Cummins B
engineRefer to the engine operator’s manual.
Power steering Motorcraft
MERCONAT FXT-2-QDX MERCON
Windshield
washer fluidUltra-Clear
Windshield Washer
ConcentrateZC-18–A ESR-M17P5-A
1Refer to your general maintenance information section to determine the
correct service interval for the lubricant which you are using.
2Ford Motor Company currently does not offer a SAE 50 Motor oil.3Ford Motor Company currently does not offer a synthetic based
lubricant for this viscosity grade. Select the correct SAE viscosity grade
lubricant and API service category for your vehicle’s operating
conditions.
4Refer toEngine oil and filter recommendations–7.3L Power Stroke
enginein theMaintenance and carechapter to select the correct SAE
viscosity grade and API service category for your vehicle’s operating
conditions.
5Add the coolant type originally equipped in your vehicle.6Use only when filling with Motorcraft Premium Engine Coolant
(green-colored).
Maintenance and Specifications
221

OWNER MAINTENANCE
You can do much of the maintenance your vehicle requires yourself, if
you have the time and a reasonable amount of mechanical ability. If you
prefer to have this work done professionally, your authorized dealer
stands ready to help you.
All mechanical components and attachments are important in that they
could affect the performance of vital components and systems. If
replacement becomes necessary, they must be replaced with parts having
the same part number or with equivalent parts. Torque values of the
attaching parts must be used as specified during any reassembly
procedure to assure proper retention.
EMISSIONS CONTROL SYSTEM
To assure the emissions control systems operate effectively, you should
have the services listed in the maintenance schedule performed at the
specified time and km/mileage intervals. You should avoid running out of
fuel or turning off the ignition while the vehicle is in motion, especially
at high speeds.
Because of high engine compartment and exhaust system
temperatures resulting from emissions equipment, do not park,
idle or operate your vehicle in dry grass or other dry ground cover
where the possibility of ground fire exists.
Do not make unauthorized modifications to the engine or vehicle.
Modifications causing increased amounts of unburned fuel to reach the
exhaust system can significantly increase the temperature of the engine
compartment and/or the exhaust system.
Avoid driving your vehicle if it does not operate properly. If the engine
diesels (more than five seconds of engine run-on after shut-off), misfires,
surges, stalls or backfires, see your dealer. Be alert for fluid leakage,
odor, smoke, loss of oil pressure, or charge indicator or over temperature
warning.
Do NOT use diesel fuel blended with waste oil in engines equipped with
a CATALYTIC CONVERTER-MUFFLER. Waste lube oil blending in fuel
will plug the CATALYTIC CONVERTER-MUFFLER, resulting in a
significant loss of engine power.
General Maintenance Information
226

Emissions control system(s) laws
Federal law prohibits vehicle manufacturers, dealers and other persons
engaged in the business of repairing, servicing, selling, leasing or trading
motor vehicles, as well as fleet operators from knowingly removing or
rendering an emissions control device or system inoperative. Further,
modifications of the emissions control system(s) could create liability on
the part of individual owners under the laws of some states. In Canada,
modification of the emissions control system could create liability under
applicable Federal or Provincial laws.
NOISE EMISSIONS WARRANTY, PROHIBITED TAMPERING ACTS
AND MAINTENANCE
On January 1, 1978, Federal regulations became effective governing the
noise emissions on trucks over 4 535 kgs. (10 000 lbs.) GVWR. The
following statements concerning prohibited tampering acts and
maintenance and the noise warranty are found in the Warranty Guide,
and are applicable to completed trucks.
Tampering with noise control system prohibited
Federal law prohibits the following acts or the causing thereof: (1) The
removal or rendering inoperative, by any person other than for purposes
of maintenance, repair or replacement, of any device or element of
design incorporated into any new vehicle for the purpose of noise control
prior to its sale or delivery to the ultimate purchaser or while it is in use,
or (2) the use of the vehicle after such device or element of design has
been removed or rendered inoperative by any person.
Among those acts presumed to constitute tampering are the following
acts listed:
Vehicle System Acts
Acoustical Shielding Removal of noise shields, hood
blanket, tunnel liner or acoustical
absorptive material.
Engine Removal or rendering inoperative
the engine speed governor so as to
allow engine speed to exceed
manufacturer specifications.
Removal of engine mounted noise
shield or oil pan enclosure.
General Maintenance Information
227

SCHEDULED MAINTENANCE SERVICES
Maintenance service adjustments must conform to specifications
contained in this manual, and those shown on the Important Engine
Information Decal. The following services are to be performed at
scheduled intervals because they are considered essential to the life and
performance of your vehicle. Ford recommends that you perform
maintenance on all designated items to achieve best vehicle operation.
Scheduled maintenance beyond 160 930 km (100 000 miles) should be
continued as before 160 930 km (100 000 miles).
SPECIAL OPERATING CONDITIONS
If your driving habitsfrequentlyinclude one or more the following
conditions:
•Short trips oflessthan 16 km (ten miles) when outside temperatures
remain below freezing.
•Operating duringhot weatherin stop-and-go“rush hour”traffic.
•Operating in severe dust conditions.
•Extensive idling, or low speed operation such as door-to-door delivery
service.
•High speed operation with a fully loaded vehicle (max. GVW).
•Snowplowing.
Perform the following:
•Change engine oil and oil filter every three months, 8 000 km (5 000
miles) or 125 hours of engine service.
•If operating in severe dust conditions, replace the air cleaner filter
more often than regular intervals as determined by the air filter
restriction indicator. Make sure that the air filter restriction indicator
is in good working order.
•Lube the manual transmission and the rear axle every 48 279 km
(30 000 miles) or 6 months, whichever comes first.
•See the Allison, Cummins and Caterpillar Operator’s Manual.
AIR BRAKE ADJUSTMENT
Failure to maintain proper air brake adjustment can result in
reduction or loss of braking ability.
Air brake inspection and adjustment should be performed by a qualified
service technician in accordance with the instructions in the Ford Truck
Service Manual.
General Maintenance Information
229

Daily Owner Checks Engine system
Check the air filter restriction indicator
Check the engine oil
Inspect the coolant level - for Powerstroke
engine (for Caterpillar and Cummins engines,
refer to the Owner’s Manual)
Brake system
Drain the air brake system reservoir - manual
valve
Check the air brake system reservoir
automatic drain valve operation
Transmission system
Visually check the automatic transmission for
fluid leakage
Steering system
Check the power steering pump fluid level and
check the system for leaks
Check the entire vehicle for evidence of fluid
leaks
U.S. Department of Transportation,
Federal Highway Administration
requirements (ensure that the entire
system is functioning properly)
Check the service brakes
Check the parking brake
Check the steering mechanism
Check the lighting devices and reflectors
Check the tires
Check the horn
Check the windshield wipers
Check the rear vision mirrors
Check the wheels and rims
Check the emergency equipment
General Maintenance Information
232