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Fan clutches
Your vehicle’s cooling system is equipped with a viscous fan clutch.
•The fan clutch helps control cooling, increase performance, improve
fuel economy and reduce noise.
•The fan clutch is controlled by bimetallic spring sensors. Do not
tamper with these sensors as this may change their calibration or keep
the fan clutch from operating at all.
Stay clear of the fan/fan area while the engine is running or
possible personal injury may occur.
WINDSHIELD WASHER FLUID
Inspect the solution level in the
washer reservoir when insufficient
solution is sprayed.
Use 3.8L (4.0 quarts) of windshield
washer fluid that meets the Ford
specification listed. Refer to
Lubricant specificationsin this
chapter.
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.
Do not put engine coolant in the washer fluid reservoir. Engine
coolant can severely reduce visibility if sprayed on the
windshield.
2004 F650/750(f67)
Supplement
USA English(fus)
Maintenance and specifications
174
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Daily Owner Checks Engine system
Check the air filter restriction indicator
Check the engine oil
Inspect the coolant level - for Power Stroke 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
2004 F650/750(f67)
Supplement
USA English(fus)
General maintenance information
229
Page 231 of 264

In addition to the items to be performed daily or at each oil change, the
following need to be completed as specified:
Maintenance Operation Frequency — ObservationClean body/door drain holes.
Clean windshield wiper blades.
Replace windshield wiper blades.
Lubricate body lock cylinders, door and hood hinges.
Check headlamp alignment.
Check windshield washer fluid level. Add fluid if required.At least twice annually.
As required.
If wiping the blades with a clean cloth and mild detergent
and washing the windshield with a cleaner does not restore
a clean wipe.
Difficult to operate or noisy.
Lamp beams in wrong position when vehicle operating
loaded.
If washers do not spray fluid when operated. GENERAL MAINTENANCE SERVICES
Listed below are vehicle checks that should be made periodically either by the owner or a qualified technician. It is recommended
that deficiencies be brought to the attention of your dealer or another qualified service outlet as soon as possible in order that
advice regarding the need for service or replacement can be obtained.
2004 F650/750(f67)
Supplement
USA English(fus)
General maintenance information
231
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V
Vehicle loading ..................131–132
Voltmeter (see Battery voltage
gauge) ..........................................24
W
Warning chimes ...........................20
Warning lights (see Lights) .......20
Warranty coverage ........................5
Washer fluid ..............................174
Washing your vehicle ................154
Water, Driving through ...............91Waxing your vehicle .................154
Wheels
.......................................199
Windows
power
.........................................53
Windshield
defrosting
............................42–43
Windshield washer fluid and
wipers
..........................................50
checking and cleaning
..............50
operation
...................................50
replacing wiper blades
.............51
Wrecker towing
.........................146
2004 F650/750(f67)
Supplement
USA English(fus)
Index
262