Fuses 187
Changing a fuse......................................187
Fuse specification chart................................188
Fuses and relays......................................196
Maintenance 197
General information...................................197
Opening and closing the hood............................208
Engine oil dipstick....................................210
Engine oil check......................................210
Engine coolant check..................................211
Automatic transmission fluid check........................215
Brake fluid check.....................................220
Power steering fluid check..............................222
Fuel filter...........................................224
Washer fluid check....................................224
Changing the vehicle battery.............................224
Checking the wiper blades..............................227
Changing the wiper blades..............................228
Air filter(s).........................................228
Adjusting the headlamps................................231
Changing a bulb......................................231
Bulb specification chart.................................233
4Table of Contents
2015 F-650/750(f67)
Owners Guide gf(ownloose), 1st Printing, December 2013
Canadian_French(fr_can)
Engine starting (with parking brake applied)
Steering linkage
free playInspect for excessive free play in the steering
linkages. The steering wheel should have less
than 2 inches (5 centimeters) of free play at its
rim.
Full power
hydraulic brake
inspectionPump the brake pedal several times with the
ignition in the off or run position. You can
momentarily hear the motor and pumps
replenishing the accumulators.
Parking brakeVerify the parking brake holds the vehicle by
gently trying to pull forward with the parking
brake applied.
Air brakesVerify operation using the following procedure.
Chock the wheels, if necessary. Push in the
parking brake and, on tractors, push in the
tractor parking brake knob:
1. Verify the air compressor or governor cutout
pressure is approximately 120 psi (827 kPa).
2. Turn off the engine, and then turn the key
back to the on position (without starting the
engine).
3. Without the brake pedal applied, note the air
pressure drop for one minute. It should be less
than 2 psi (14 kPa) for single vehicles and 3 psi
(21 kPa) for combination vehicles.
4. Press and hold the brake pedal with 90 psi
(621 kPa) or more. Make sure there is no more
than a 3–psi (21 kPa) per minute leak for single
vehicles and a 4–psi (28 kPa) per minute leak for
combination vehicles.
5. Pump the brake pedal to deplete the system of
air pressure. The warning light and tone should
turn on at 57 psi (393 kPa).
6. Pump the brake pedal and make sure the
parking brake and trailer parking brake knobs
pop out at 20 psi (138 kPa) or higher.
Automatic
transmission fluidVerify that the fluid level is in the proper
operating range. SeeTransmission fluid check
in theMaintenancechapter.
16Vehicle Inspection Guide
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Canadian_French(fr_can)
GAUGES - GASOLINE ENGINE
Cluster shown in standard measure. Metric similar.
A. Engine oil pressure gauge
B. Engine coolant temperature gauge
C. Transmission fluid temperature gauge
D. Fuel gauge
E. Speedometer
F. Information display. See theInformation Displayschapter for more
information.
G. Tachometer
Engine Oil Pressure Gauge
Indicates engine oil pressure. The needle should stay in the normal
operating range. If the needle falls below the normal range, stop the
vehicle, turn off the engine and check the engine oil level. Add oil if
needed. If the oil level is correct, have your vehicle checked at an
authorized dealer.
ABCD
GFE
Instrument Cluster65
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Diesel Exhaust Fluid (diesel engine only)
It illuminates when the diesel exhaust fluid level falls below
0.5 gallons (1.9L) in the 5- gallon (19.0L) tank or one gallon
(3.8L) in the 9-gallon (34.0L) tank. Refill the tank or, at a
minimum, add at least one gallon (3.8L) to the 5- gallon (19.0L) tank or
two gallons (7.6L) to the 9- gallon (34.0L) tank.
Diesel Particulate Filter (diesel engine only)
It illuminates when the soot level in the diesel particulate filter
has reached a point where it requires operator assistance. See
Diesel particulate filterin theMaintenancechapter, and your
engine operator’s manual, for more details.
Do Not Shift (Allison automatic transmission only)
It illuminates while driving if a transmission problem exists;
shifting may be restricted. Depending on the severity of the
problem, the shifter’s digital read-out may turn blank.
Operation may continue in order to reach service assistance. The control
unit may not respond to shift selector requests, since there are operating
limitations on the transmission (such as. upshift and downshift
restrictions). Direction changes do not occur.
Direction Indicator
It illuminates when you turn on the left or right turn signal or
the hazard warning flasher. If the indicators stay on or flash
faster, check for a burned out bulb.
Electronic Locking Differential
It illuminates when using the electronic locking differential.
Engine Oil Pressure (gasoline engine only)
It illuminates when engine oil pressure is low.
Fasten Safety belt
It illuminates and a tone sounds to remind you to fasten your
safety belt.
Instrument Cluster69
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•At temperatures of –4°F (–20°C) or below, it is recommended that
you use a crankcase-mounted coolant heater to improve cold engine
starting.
•If operating in arctic temperatures of –20°F (–29°C) or lower, consult
your truck dealer for information about special cold weather
equipment and precautions.
Hot Weather
•Use a permanent-type engine coolant to protect the engine against
damage from overheating.
•Fill the fuel tank at the end of daily operation to prevent
condensation in the fuel system.
•Keep external surfaces of the engine, radiator, charge air cooler, air
conditioning condenser and accessories clean to avoid dirt build-up.
•You may experience above normal coolant temperatures while driving
in a transmission gear ratio that lugs the engine. To correct this
problem, increase engine speed by downshifting into the next lower
gear.
STEERING
Your vehicle is equipped with power steering. Power steering uses energy
from the engine to decrease the driver’s effort in steering your vehicle.
To help prevent damage to the power steering pump:
•Never hold the steering wheel to the extreme right or the extreme
left for more than a few seconds when the engine is running.
•Do not operate your vehicle with the power steering pump fluid level
below the ADD mark on the MAX COLD side of the power steering
reservoir dipstick.
•Some noise is normal during operation. If the noise is excessive,
check for low power steering pump fluid level before seeking service
by an authorized dealer.
•Low power steering pump fluid levels may cause heavy or uneven
steering efforts. Check the power steering pump fluid level before
seeking service from an authorized dealer.
•Do not fill the power steering pump reservoir above the FULL mark
on the MAX HOT side of the power steering reservoir dipstick, as this
may result in leaks from the reservoir.
If the power steering system breaks down (or if the engine is turned
off), you can steer your vehicle manually, but it takes more effort.
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When Fail-Safe Mode Turns On
WARNING:Never remove the coolant reservoir cap while the
engine is running or hot.
Note:Driving your vehicle without repairing the engine problem
increases the chance of engine damage. Take your vehicle to an
authorized dealer as soon as possible.
You have limited engine power when in the fail-safe mode, so drive your
vehicle with caution. Your vehicle is not able to maintain high-speed
operation and the engine runs rough. Remember that the engine is
capable of completely shutting down automatically to prevent engine
damage; therefore:
1. Pull off the road as soon as safely possible and turn off the engine.
2. Have your vehicle taken to an authorized dealer.
3. If this is not possible, wait a short period for the engine to cool.
4. Check the coolant level and replenish if low.
5. Restart the engine and take your vehicle to an authorized dealer.
TRANSMISSION FLUID CHECK
Allison Automatic Transmissions
See yourAllison Automatic Transmission Operator’s Manualfor
scheduled transmission fluid checks and change intervals. Your
transmission does not consume fluid. However, you should check the
fluid level if the transmission is not working properly. For example, if the
transmission slips or shifts slowly or if you notice some sign of fluid
leakage.
Automatic transmission fluid expands when warmed. To obtain an
accurate fluid check, drive your vehicle until it is at normal operating
temperature, approximately 20 miles (30 kilometers). Verify that the
transmission fluid temperature gauge, located on the instrument cluster,
is within the normal range.
1. Drive your vehicle 20 miles (30 kilometers) or until it reaches normal
operating temperature.
2. Park your vehicle on a level surface and engage the parking brake.
3. With the engine running, parking brake engaged and your foot on the
brake pedal, move the gearshift lever through all of the gear ranges.
Allow sufficient time for each gear to engage.
4. Latch the gearshift lever in positionNorPand leave the engine
running.
5. Remove the dipstick, wiping it clean with a clean, dry, lint-free rag.
Maintenance215
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6. Install the dipstick making sure to seat it fully in the filler tube.
7. Remove the dipstick and inspect the fluid level. The fluid should be
in the designated area for normal operating temperature or ambient
temperature.
If you must add transmission fluid, see yourAllison Automatic
Transmission Operator’s Manualfor the correct fluid type.Use of a
non-approved automatic transmission fluid may cause internal
transmission component damage.
Fluid levels above the safe range may result in transmission failure. An
overfill condition of transmission fluid may cause shift or engagement
concerns or possible damage.
TorqShift® Automatic Transmission
See theScheduled Maintenancechapter for scheduled intervals for
fluid checks and changes. Your transmission does not consume fluid.
However, you should check the fluid level if the transmission is not
working properly. For example, if the transmission slips or shifts slowly
or if you notice some sign of fluid leakage.
Automatic transmission fluid expands when warmed. To obtain an
accurate fluid check, drive your vehicle until it is at normal operating
temperature, approximately 20 miles (30 kilometers). Verify that the
transmission fluid temperature gauge, located on the instrument cluster,
is within the normal range.
1. Drive your vehicle 20 miles (30 kilometers) or until it reaches normal
operating temperature.
2. Park your vehicle on a level surface and engage the parking brake.
3. With the engine running, parking brake engaged and your foot on the
brake pedal, move the gearshift lever through all of the gear ranges.
Allow sufficient time for each gear to engage.
4. Latch the gearshift lever in positionPand leave the engine running.
5. Remove the dipstick, wiping it clean with a clean, dry, lint-free rag.
6. Install the dipstick making sure to seat it fully in the filler tube.
7. Remove the dipstick and inspect the fluid level. The fluid should be
in the designated area for normal operating temperature or ambient
temperature.
216Maintenance
2015 F-650/750(f67)
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Canadian_French(fr_can)
Low Fluid Level
Do not drive your vehicle if there is
no indication of fluid on the dipstick
and the ambient temperature is
above 50°F (10°C).
Correct Fluid Level
Check the fluid at normal operating
temperature, 196°F-216°F
(91°C-102°C), on a level surface.
The fluid reaches normal operating
temperature after approximately 20 miles (30 kilometers) of driving.
High Fluid Level
Fluid levels above the safe range
may result in transmission failure.
An overfill condition of transmission
fluid may cause shift or engagement
concerns and possible damage.
Overheating conditions can cause
high fluid levels.
Adjusting Automatic Transmission Fluid Levels
Note:Use of a non-approved automatic transmission fluid may cause
internal transmission component damage.
Before adding any fluid, make sure the correct type is used. The dipstick
handle normally indicates which type of fluid to use. You can also find
the fluid specification in theCapacities and Specificationschapter.
If necessary, add fluid in 0.5 pint (250 milliliters) increments through the
filler tube until the level is correct.
Maintenance217
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