Page 139 of 280

Hook-up
1.
Back the tractor squarely under the trailer, engaging the fifth wheel jaws
on the kingpin. Always back-up slowly, making sure the trailer is neither too
high nor too low. Avoid backing under the trailer from an angle.
2. Connect the service and emergency brake hoses and trailer light
connector. Refer to Tractor-trailer connection in this chapter, adhering
to the warning and using the three-point stance while connecting and
disconnecting the trailer.
3.
Inspect the jaws of the fifth wheel to be sure they have fully closed on
the trailer kingpin and the trailer plate is resting securely on the fifth wheel.
4. Be sure the coupler release lever is in the locked position.
5. Charge the trailer brake system. Set the trailer brakes, either with the
hand valve or tractor protection valve. Pull against the trailer for an
additional check of proper hook-up. Do not pull hard enough to damage
or strain the equipment.
6. Set the tractor parking brakes and fully raise the trailer landing gear.
Refer to Brakesin this chapter for proper operation of the parking brake
and trailer brakes.
7. Check the operation of all trailer lights and correct any lights that may
be faulty.
Un-hook
1. Try to keep the tractor and trailer in a straight line.
2. Apply the parking brakes.
3. Lower the trailer landing gear, making sure it is on solid, level ground.
The weight of the trailer is to be on the landing gear.
4. Block the trailer wheels.
5. Disconnect the brake hoses and light cords. Be sure hoses and cords
are clear.
6. Pull coupler release lever to disengage the fifth wheel jaws.
7. Release the tractor parking brakes.
8. Pull out from the trailer slowly, allowing the landing gear to take the
load gradually.
2007 F-650/750 (f67)
Supplement
USA (fus)
Driving
139
Page 201 of 280

ELECTRICAL SYSTEM INSPECTIONS
Periodically inspect electrical connectors on the outside of the cab, on
the engine and frame for corrosion and tightness. Exposed terminals
such as the fuel sender, cranking motor, alternator and feed-through
studs should be cleaned and re-coated with a lubricant sealing grease
such as Motorcraft Silicone Brake Caliper Grease and Dielectic
Compound XG-3, or equivalent. This should include the ground cable
connector for batteries, engine and cab as well as the jump starting stud.
Accessory feed connections
Vehicle electrical systems are complex and often include electronic
components such as engine and transmission controls, instrument panels,
ABS, etc. While most systems operate on battery voltage (12 volts),
some systems can be as high as 90 volts or as low as five volts. Refer to
the Electrical Circuit Diagram Manuals, available from your vehicle’s
manufacturer, to ensure that any additional body lights and accessories
are connected to circuits that are both appropriate and not overloaded.
No modification should be made to any vehicle control system without
first contacting your dealer.
SUSPENSION INSPECTION
Note:Do not adjust air suspension height to any setting other than the
specified setting. Altering the height setting will change the driveline
angle and may result in unwarrantable component damage, such as
transmission component damage.
Verify drive axle air suspension height and height control valve
performance at engine lube oil change intervals.
Periodically:
•Check condition of spring leaves for evidence of fatigue, bending or
breakage.
•Check condition of suspension mounting brackets and bushings.
•Check that torque rod mounting fasteners are tight.
•Check to be sure the suspension alignment is maintained at all times.
•Check U-bolts after the chassis has been operating under load for
1,000 miles (1,600 km) or six months, whichever comes first, the
U-Bolt nuts must be re-torqued. The U-Bolt nuts thereafter must be
re-torqued every 36,000 miles (58,000 km). The U-Bolt and nut
threads and seats should be cleaned and lubricated to ensure a “like
new” condition when re-torquing.
Note:See theU-Bolt Nut Torquechart later in this section.
2007 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
201
Page 273 of 280

engine oil pressure gauge ........27
fuel gauge ..................................27
odometer ...................................27
speedometer .............................27
tachometer ................................27
trip odometer ............................27
H
Hazard flashers .........................141
Headlamps ...................................52 aiming ........................................53
daytime running lights .............52
high beam .................................52
warning chime ..........................22
Heating ..................................49–50 heater only system ...................49
manual heating and air
conditioning system .................50
Hood ..........................................173
I
Ignition .........................................91 chime .........................................22
Infant seats
(see Safety seats) .......................86
Instrument panel cleaning ...................................162
lighting up panel and
interior .......................................53
J
Jump-starting your vehicle ......148
K
Keys key in ignition chime ...............22
positions of the ignition ...........91 L
Lamps
bulb replacement
specifications chart ..................54
cargo lamps ...............................53
daytime running light ...............52
headlamps .................................52
high beams ................................52
instrument panel, dimming .....53
interior lamps ...........................54
replacing bulbs ...................54–57
Lane change indicator
(see Turn signal) ........................53
Lights, warning and indicator ....22 air suspension ...........................22
anti-lock brakes (ABS) ....22, 118
brake ..........................................22
charging system ........................22
safety belt .................................22
service engine soon ..................22
traction control off ...................22
turn signal indicator .................22
Lubricant specifications ...........214
M
Manual transmission .................125 lubricant specifications ..........214
Mirrors .........................................61 fold away ...................................63
heated ........................................62
side view mirrors (power) .......61
O
Odometer .....................................27
P
Paint chips, repairing ...............160
2007 F-650/750 (f67)
Supplement
USA (fus)
Index
273
Page 275 of 280

fluid, checking and adding
(manual) .................................199
fluid, refill capacities ..............228
lubricant specifications ..........214
manual operation ....................125
Turn signal ..................................53
V
Vehicle loading ..................134–135
Voltmeter
(see Battery voltage gauge) ......27
W
Warning chimes ...........................22
Warning lights (see Lights) .......22
Warranty coverage ........................6 Washer fluid ..............................175
Washing your vehicle ................160
Water, Driving through ...............96
Waxing your vehicle .................160
Wheels .......................................205
Windows
power .........................................59
Windshield defrosting ............................49–50
Windshield washer fluid and
wipers ..........................................58 checking and cleaning ............162
operation ...................................58
replacing wiper blades ...........176
Wrecker towing .........................152
2007 F-650/750 (f67)
Supplement
USA (fus)
Index
275
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