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Supporting your vehicle for service
When performing service repairs on your vehicle, first prepare the
vehicle by doing the following:
1. Park the vehicle on a level concrete floor.
2. Set the parking brake and block the wheels to prevent the vehicle
from moving.
3. Select a jack with a rated capacity sufficient to lift and hold up the
vehicle.
4. Raise the vehicle with the jack applied to the axle(s). DO NOT use the
bumper as a lifting point.
5. Support the vehicle with floor stands under the axle(s). If the axle or
the suspension are being serviced, support the vehicle with floor stands
under the frame side-members, preferably between the axles.
Do not use a jack when working under a vehicle. It may give way,
causing the vehicle to fall and result in property damage, personal
injury or death. Always use floor stands to support the vehicle.
FRAME AND TOW HOOKS
Your vehicles chassis is manufactured with frame rails of either HSLA
steel or heat-treated steel. Each must be handled in a specific manner to
ensure maximum service life. Before attempting frame repair or
modification, consult the service manual or your dealer.
It is important, particularly on vehicles where the tow hooks are used
frequently to inspect the front and rear tow hooks for damage or a loose
mounting.
U-BOLT NUT TORQUE
U-bolt diameter (nominal)
(all spring suspensions)U-bolt diameter (nominal)
Ft. lb. N•m
IROS Air w/15,500 lb. axles and
less260–300 353–407
IROS Air w/greater than 15,500 lb.
axles370–400 502–542
Hendrickson 23,000 lb. axle 370–400 502–542
2008 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
194
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Maintenance Operation Frequency - Observation
Check the battery terminals for
corrosionWhenever electrical power supply has
diminished.
Tighten the wheel mounting
nuts to the specified torque.
Refer toWheelsin the
Maintenance and
SpecificationschapterRequired initially at 500 and 1000
miles (800 and 1600 km). Perform
again at 500 and 1000 mile (800 and
1600 km) intervals after each tire
removal/replacement.
Clean body/door drain holes At least twice annually.
Clean windshield wiper blades As required.
Replace windshield wiper
bladesIf wiping the blades with a clean cloth
and mild detergent and washing with
a cleaner does not restore a clean
wipe.
Lubricate body lock cylinders Noisy or difficult to operate.
Check headlamp alignment Lamp beams in wrong position when
vehicle operating loaded.
Check windshield washer fluid
level; add fluid if requiredIf washes do not spray when operated.
1- During maintenance and repair, protect the fuel tube and the hose
assemblies, the power steering lines, and the brake lines from the
external heat, the acids and the abrasion that could damage the lines.
2- Check for (free) linkage action and ensure that (return) spring
force is adequate to maintain pedal free play.
3- Adjust, repair or replace as required with the same or equivalent
parts.
2008 F-650/750(f67)
Supplement
USA(fus)
Scheduled Maintenance Guide
239
Page 266 of 273

Parking brake ......................93, 100
warning light .............................21
Power door locks ........................61
Power mirrors .............................56
Power point .................................53
Power steering ..........................168
fluid, checking and adding ....186
fluid, refill capacity ................224
fluid, specifications .................209
Power Take-Off (PTO)
operation .................................122
Power Windows ...........................53
R
Radio ................................32, 34, 38
Relays ........................................136
Remote entry system
locking/unlocking doors ...........61
Roadside assistance ..................134
S
Safety belts
(see Safety restraints) .........69–71
Safety defects, reporting ..153–154
Safety restraints ....................69–71
Belt-Minder.............................74
cleaning the safety belts ..........73
extension assembly ..................73
for adults .............................70–71
for children ...............................78
lap belt ......................................70
warning light and chime ....21, 74
Safety seats for children ............81
Scheduled Maintenance
Guide .........................................227General Maintenance
Information .............................227
Seat belts
(see Safety restraints) ...............69
Seats ............................................62
child safety seats ......................81
heated ........................................68
Special notice ................................6
Specification chart,
lubricants ...................................209
Speed control ..............................57
Speedometer ...............................27
Starting your vehicle ..................85
jump starting ..........................142
preparing to start your
vehicle .......................................85
Steering .....................................167
Steering wheel
controls ................................52, 57
tilting .........................................52
Suspension ........................113, 193
T
Tachometer .................................27
Temperature control
(see Climate control) ...........44–45
Towing
wrecker ....................................146
Traction control
off light ......................................21
Transmission .....................115, 119
automatic operation ...............115
fluid, checking and adding
(automatic) .............................190
fluid, checking and adding
(manual) .................................191
2008 F-650/750(f67)
Supplement
USA(fus)
Index
265
Page 267 of 273

fluid, refill capacities ..............224
lubricant specifications ..........209
manual operation ....................119
Turn signal ..................................48
V
Vehicle loading ..........................128
Voltmeter
(see Battery voltage gauge) ......27
W
Warning chimes ...........................21
Warning lights (see Lights) .......21
Warranty coverage ........................6
Washer fluid ..............................170Washing your vehicle ................155
Water, Driving through ...............90
Waxing your vehicle .................155
Wheels .......................................196
Windows
power
.........................................53
Windshield
defrosting
............................44–45
Windshield washer fluid and
wipers
..........................................52
checking and cleaning
............157
operation
...................................52
replacing wiper blades
...........171
Wrecker towing
.........................146
2008 F-650/750(f67)
Supplement
USA(fus)
Index
266