Page 179 of 280

A symbol has been developed by the
American Petroleum Institute (API)
to help you select the proper engine
oil. It will be included on the oil
container you purchase. The top
section of the symbol shows the oil
performance by the API designation.
This should match the owner guide recommendation. The center section
will show the SAE viscosity grade. The lower section will state energy
conserving if the oil has proven fuel saving capabilities.
Use a Ford engine oil filter, part number FL-1995 or equivalent. This filter
protects your engine by filtering harmful, abrasive or sludge particles.
BATTERY
Your vehicle is equipped with two or three maintenance-free batteries
which are mounted in a covered tray and located on the left frame rail.
The covered battery tray, depending upon application, may also have one
or two steps attached.
•Covered battery tray shown.
Battery tray with steps similar.
The two rubber straps on top of
the cover must be pulled up and
moved to the side of the battery
in order to remove the lid.
• Battery tray with cover removed.
Maintenance-free batteries do not normally require adding additional
water.
2007 F-650/750 (f67)
Supplement
USA (fus)
Maintenance and Specifications
179
Page 185 of 280

If you drive in extremely hot climates:
•It is still necessary to maintain the coolant concentration
above 40%.
•NEVER decrease the coolant concentration below 40%.
•Engine coolant concentrations below 40% will decrease the
corrosion protection characteristics of the engine coolant and
may cause engine damage.
•Engine coolant concentrations below 40% will decrease the
freeze protection characteristics of the engine coolant and may
cause engine damage.
•If available, refer to the chart on the coolant container to
ensure the coolant concentration in your vehicle will provide
adequate protection at the temperatures in which you drive.
Vehicles driven year-round in non-extreme climates should use a 50/50
mixture of engine coolant and distilled water for optimum cooling system
and engine protection.
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.
FUEL FILTER/WATER SEPARATOR
Do not drain water separator while engine is running. Fuel may
ignite if separator is drained while engine is running or vehicle is
moving.
The fuel filter/water separator removes any contaminated particles
and/or water from the fuel before the fuel enters the engine.
The fuel filter/water separator should be drained as recommended in the
Scheduled Maintenance Guidechapter.
2007 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
185
Page 186 of 280
Draining the fuel filter/water separator – 6.0L Power Stroke engine
Water should be drained whenever
the warning light comes on or every
5,000 miles (8,000 km).
1. Stop the vehicle andshut offthe engine.
2. Locate the drain valve and place
a suitable container at the end of
the drain tube.
3. Turn the drain valve to the drain position and allow water to drain out.
Note:Drain until the water/fuel mixture becomes only fuel.
4. Turn the drain valve to the closed position.
5. Restart the engine and check WATER IN FUEL indicator light; it
should not be illuminated. If it continues to illuminate, have the fuel
system checked and repaired.
Draining the fuel filter/water separator - Cummins B engine
Refer to your engine operator’s manual for service procedures.
WATER
IN
FUEL
2007 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
186
Page 187 of 280
Draining the fuel filter/water separator - Caterpillar engine
1. With the engine off, open the
drain valve located at the bottom of
the fuel filter/water separator by
turning it counterclockwise.
2. Drain the filter until clear fuel is visible.
3. Turn the drain valve clockwise to close the valve. Do not overtighten
the drain valve as this could cause damage to the fuel filter/water
separator.
Fuel filter replacement - 6.0L Power Stroke engine
Removal
1. Remove the fuel filter cap by
turning counterclockwise.
2. Remove and discard the old fuel
filter element.
3. Carefully clean the mating
surfaces.
Installation
The engine will not run properly if the fuel filter is not installed
in housing.
1. Install new fuel filter into the fuel filter housing.
2. Tighten cap onto fuel filter housing slowly, allowing fuel to soak into
the fuel filter element. Tighten cap until it contacts the housing.
2007 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
187
Page 188 of 280

After replacing the fuel filter, the engine will purge the trapped
air as it runs. The engine may run roughly and smoke until the air
is completely eliminated.
Using a fuel which has more than average impurities may require
the fuel filter to be replaced more frequently than the service
interval specifies.
Fuel filter replacement - Cummins B engine
Refer to your engine operator’s manual for service intervals and
procedures.
Fuel filter replacement - Caterpillar engine
The fuel filter/water separator is
located on the left side of the
engine. Replace the fuel filter/water
separator as recommended in the
Scheduled Maintenance Guide
chapter, or sooner if it becomes
plugged. Vehicles operated on fuel
with more than average impurities
may require replacement of the fuel
filter more frequently. The spin-on
filter has a water drain valve built
into the bottom of the filter canister.
Removal
1. Using an oil filter wrench, remove the filter.
2. Carefully clean the mating surfaces.
Installation
1. Fill the filter with clean, fresh diesel fuel.
2. Coat the filter seal with clean, fresh diesel fuel.
3. Hand-tighten the filter until it seats firmly against the mount, then
tighten (by hand) an additional
1 3to1 2turn.
4. Start the engine and check for fuel leaks.
2007 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
188
Page 239 of 280

Daily owner checks
EngineCheck the air filter restriction gauge.
Check the engine oil.
Inspect the coolant level (6.0L Power
Stroke engine; Caterpillar and
Cummins engines, refer to the
Owner’s Manual).
Brake systemCheck the air brake system reservoir
automatic drain valve operation.
Drain the air brake system reservoir -
manual valve.
Transmission systemVisually check the automatic
transmission for fluid leakage.
Steering systemCheck 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.
2007 F-650/750(f67)
Supplement
USA(fus)
Scheduled Maintenance Guide
239
Page 242 of 280

Maintenance Operation Frequency - Observation
Inspect the automatic slack
adjuster functionInsufficient power shown in loaded
practice stop.
Check the operation of the brakes,
the clutch, and the steering
(1),(2)Vehicle handling qualities not up to
par.
Inspect the vehicle for missing,
damaged, or mislocated noise
shieldsExcessive noise emanates from
under the cab or engine
compartment.
Check the engine performance
and the engine governorExcessive engine noise.
Inspect the fan, the fan shroud,
and the fan clutchEngine overheats, fan runs at high
speed constantly, excessive fan
noise, or fan wobble due to worn
bearings.
Check for operation of ABS
warning lampAt each engine start up.
Inspect the entire exhaust system
(including inlet pipe, muffler,
outlet pipe and all exhaust clamps
and fasteners) for holes, leakage,
breakage, looseness and corrosive
damageExcessive noise or the smell of
fumes is experienced.
Inspect the engine air induction
system (including the air ducts
and the air filter) for loose fitting,
damaged or missing componentsExcessive noise emanates from the
engine compartment.
Inspect the tires and check the air
pressure
(3)Poor steering, wandering or
excessive tire wear.
Balance the wheels and the tires Vibration or abnormal tire wear
indicates imbalance.
Check the front end alignment
(3)Poor steering, wandering or
excessive tire wear.
Check the transmission and
engine mountings
(2)Hard shifting or excessive
vibration.
2007 F-650/750(f67)
Supplement
USA(fus)
Scheduled Maintenance Guide
242
Page 244 of 280
![FORD F750 2007 11.G Owners Manual ComponentOn-Highway
(60,000 miles [96,000 km] or more annually) - Miles, kilometers or months -
whichever occurs first
Miles (x 1000) 15 30 45 60 75 90 105 120 135 150
Kilometers (x 1000) 24 48 72 96 FORD F750 2007 11.G Owners Manual ComponentOn-Highway
(60,000 miles [96,000 km] or more annually) - Miles, kilometers or months -
whichever occurs first
Miles (x 1000) 15 30 45 60 75 90 105 120 135 150
Kilometers (x 1000) 24 48 72 96](/manual-img/11/5073/w960_5073-243.png)
ComponentOn-Highway
(60,000 miles [96,000 km] or more annually) - Miles, kilometers or months -
whichever occurs first
Miles (x 1000) 15 30 45 60 75 90 105 120 135 150
Kilometers (x 1000) 24 48 72 96 120 144 168 192 216 240
Months 3 6 9 12 15 18 21 24 27 30
Non-driving front axle
Wheel bearing - oil type - check level••••••••••
Wheel bearing - oil type - change oil•
Wheel bearing - grease type - repack•••••
Tie rod ends - lubricate••••••••••
Drag link - lubricate••••••••••
King pin and bushing - lubricate••••••••••
Brake system - air
Slack adjusters - lubricate••
S-cam - lubricate••••••••••
Brake system - hydraulic
Master cylinder - check level••••••••••
Park brake relay lever / linkage - lubricate••
Steering
Power steering fluid - check level••••••••••
Power steering fluid - change fluid•
Power steering filter - replacement Five years or 500,000 miles (800,000 km)
Steering gear Ross TAS - output shaft - lubricate•••
Steering column u-joints / slip joint - lubricate••••••••••
2007 F-650/750(f67)
Supplement
USA(fus)
Scheduled Maintenance Guide
244