2004 FORD F750 light

TWO-SPEED REAR AXLE (IF EQUIPPED)
A two-speed rear axle allows the driver to select a LO range for greater
pulling power and a HI range for greater road speed and fuel economy.
These ranges can also be used to provide additional steps between
transmission shifts when driving on steep grades and/or fuel economy
may be factors.
Note:Do not shift between ranges when the speed control is on.
Never shift a two-speed axle when descending a steep grade as
this may cause loss of vehicle control and result in personal
injury.
Axle shifting
Manual transmissions:
•To downshift,select the next lower gear, release and depress the
accelerator pedal rapidly, or while holding the accelerator pedal down,
release and engage the clutch rapidly.Note:The clutch method is
recommended when driving at slower speeds.
•To upshift,keep the accelerator pedal down, select the next higher
gear, release the accelerator and pause until the axle upshifts.Note:
De-clutch for smoother axle upshifts when driving at slower speeds.
Automatic transmissions:
•Use LO range for when you drive
a fully loaded vehicle on a severe
grade or in congested traffic. To
activate LO range, press the
upper portion of the switch.
•Use HI range for all normal
driving conditions with a lightly
loaded or partially loaded vehicle.
To activate HI range, press the
lower portion of the switch.
Note:You cannot split-shift with an automatic transmission. Also,
downshifting above 64 km/h (40 mph) may result in transmission or axle
damage.
Shifting the axle from LO to HI range - vehicle stopped
Place the transmission in N (Neutral), the press the lower part of the
switch.
LOW
2SPD
2004 F650/750(f67)
Supplement
USA English(fus)
Driving
129

•Canada
Under no circumstances should your vehicle be loaded in excess of the
GVWR or GAWR. It is the operator’s responsibility to assure that neither
the axle capacities, spring capacities, tire capacities nor the vehicle rated
GVWR is exceeded. For tire capacities, refer toMaintenance and
specificationschapter.
Unloaded or lightly loaded vehicles
The braking system has been designed to safely stop your vehicle when
fully loaded to its GVWR.
When operating empty or lightly loaded, sudden or hard braking
may induce wheel lockup with loss of vehicle control and the
possibility of accident and serious injury, especially on wet or slippery
road surfaces.
TRAILER TOWING
Towing a trailer places an additional load on your vehicle’s engine,
transmission, axle, brakes, tires and suspension. Inspect these
components carefully prior to and after any towing operation.
Your vehicle’s load capacity is designated by weight, not by volume, so
you cannot necessarily use all available space when loading a vehicle.
2nd unit bodies are not included in maximum trailer weight ratings. The
weight of the additional“body”must be subtracted from the maximum
trailer weight.
2004 F650/750(f67)
Supplement
USA English(fus)
Driving
132

Trailer brakes
Electric brakes and manual, automatic or surge-type trailer brakes are
safe if installed properly and adjusted to the manufacturer’s
specifications. The trailer brakes must meet local and Federal
regulations.
Do not connect a trailer’s hydraulic brake system directly to your
vehicle’s brake system. Your vehicle may not have enough
braking power and your chances of having a collision greatly increase.
Trailer lamps
Trailer lamps are required on most towed vehicles. Your vehicle may be
equipped with one of two possible trailer wiring designs. Make sure all
running lights, brake lights, turn signals and hazard lights are working.
See your dealer or trailer rental agency for proper instructions and
equipment for hooking up trailer lamps.
Driving while you tow
When towing a trailer:
•Turn off the speed control. The speed control may shut off
automatically when you are towing on long, steep grades.
•Consult your local motor vehicle speed regulations for towing a trailer.
•To eliminate excessive transmission shifting, use a lower gear. This will
also assist in transmission cooling.
•Anticipate stops and brake gradually.
•Do not exceed the GCWR rating or transmission damage may occur.
Servicing after towing
If you tow a trailer for long distances, your vehicle will require more
frequent service intervals. Refer to your scheduled maintenance guide for
more information.
Trailer towing tips
•Practice turning, stopping and backing up before starting on a trip to
get the feel of the vehicle trailer combination. When turning, make
wider turns so the trailer wheels will clear curbs and other obstacles.
•Allow more distance for stopping with a trailer attached.
•The trailer tongue weight should be 10–15% of the loaded trailer
weight.
2004 F650/750(f67)
Supplement
USA English(fus)
Driving
134

Fuse block - battery junction box
Fuse/Relay
LocationFuse Amp
RatingFuse Description
F1 15A* Main light switch
F2 30A* Power seat (driver)
F3 30A* Power seat (passenger)
F4 15A* Washer pump relay, Washer pump motor
F5 15A* Exhaust brake (Caterpillar and Cummins
engine)
F6 15A* Air intake heater (Caterpillar engine)
F7 15A* Stoplamp switches
F8 25A* Fuel heater relay (Caterpillar engine)
20A* Fuel heater relay (6.0L Power Stroke engine)
F9—Not used
F10 15A* Heated drain valve
2004 F650/750(f67)
Supplement
USA English(fus)
Roadside emergencies
138

Fuse/Relay
LocationFuse Amp
RatingFuse Description
F11—Not used
F12—Not used
F13 10A* Parking brake
F14—Not used
F15 7.5A* Body builder - trailer adapter stoplamps
F16 5A* WABCO hydraulic ABS
F17—Not used
F18 10A* Fuel transfer pump
F19—Not used
F20 10A* Engine ECM power relay (6.0L Power Stroke
engine)
F21 10A* Control for Hydro-max motor
F22 10A* V8 engine IDM2 logic power
F23—Not used
F24—Not used
F101 30A** Air ABS relay, Hydraulic modulator relay
F102 20A** Ignition switch to customer access
F103 50A** Ignition switch, Central Junction Box (CJB)
fuses 8, 9, 10, 11, 19, 20, 23, 24, 25, 29, 30,
31
F104 20A** Power point
F105 20A** Door lock switches
F106 30A** Main light switch, Multifunction switch, CJB
fuses 16, 26 and 28, Headlamps, DRL relays
F107 50A** CJB fuses 1, 2, 3, 4, 12, 13, 14, 15
F108 40A** Fuel heater relay (Cummins engine)
F109 40A** Power window relay
F110—Not used
F111 30A** Park lamps relay, Park lamps
F112 40A** Blower motor relay, Blower motor
F113 30A** Heated seats
F114 25A** Hydraulic ABS ECU power
2004 F650/750(f67)
Supplement
USA English(fus)
Roadside emergencies
139

Fuse block - central junction box
Fuse/Relay
LocationFuse Amp
RatingFuse Description
1 20A Horn relay
2 15A Hazard flasher
3 20A Cigar lighter
4 10A Diagnostics
5 15A Blend door actuator, Back-up lamps, DRL
signal, Heated seats
6 10A Horn switch
7—Not used
8 5A Radio, GEM ACC
9 5A Headlamp switch LED, Window switch LED
and relay
10 15A Heated and lighted mirrors
2004 F650/750(f67)
Supplement
USA English(fus)
Roadside emergencies
141

Fuse/Relay
LocationFuse Amp
RatingFuse Description
11 30A Wiper motor, Washer pump relay
12 10A Stop lamp switch (Hydraulic brake vehicles)
13 20A Cluster, Radio
14 10A Interior lamp relay
15 10A Interior lamp relay
16 15A Headlamp high beam, High beam indicator
17—Not used
18 5A Headlamp switch interior lighting
19 15A Engine control (all engines), Accelerator
pedal (6.0L Power Stroke engine)
20 15A Starting system
21 10A DRL resistor
22 15A Speed control feed (6.0L Power Stroke
engine), Air solenoid, Fuel transfer pump
23 10A Hazard flasher (Run)
24 15A ABS, Air dryer, Vacuum pump, Fuel heater
relay
25 10A Function selector switch
26 10A RH headlamp low beam
27—Not used
28 10A LH headlamp low beam
29 10A Cluster warning lamps, Gauges GEM,
Hydraulic brake ABS
30—Not used
31 15A Allison transmission or ABS event
Relay 1 1/2 ISO Interior lamp relay
Relay 2 1/2 ISO Not used
Relay 3 Full ISO Horn relay
Relay 4 Full ISO One-touch window down relay
Relay 5 Full ISO Not used
2004 F650/750(f67)
Supplement
USA English(fus)
Roadside emergencies
142

JUMP STARTING YOUR VEHICLE
The gases around the battery can explode if exposed to flames,
sparks, or lit cigarettes. An explosion could result in injury or
vehicle damage.
Batteries contain sulfuric acid which can burn skin, eyes and
clothing, if contacted.
Do not attempt to push-start your vehicle. Automatic
transmissions do not have push-start capability; doing so may
damage the catalytic converter.
Jump starting your vehicle
The gases around the battery can explode if exposed to flames,
sparks, or lit cigarettes. An explosion could result in injury or
vehicle damage.
Connecting the jumper cables
1. Connect the positive (+) jumper cable to the positive (+) terminal of
the discharged battery.
Note:In the illustrations,lightning boltsare used to designate the
assisting (boosting) battery.
+–+–
2004 F650/750(f67)
Supplement
USA English(fus)
Roadside emergencies
143