2011 FORD F750 air suspension

WARNING: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.
SPRING U-BOLT CHECKS
Check U-bolt nuts and re-torque every 36,000 miles (58,000 km) after
initial 1,000 miles (1,600 km) re-torque. The U-bolt and nut threads and
seats should be cleaned and lubricated to ensure peak condition when
re-torqued.
U-bolt nut torque
Suspension ft-lb N•m
Front axle – 8500 lb (3856 kg) 180-200 244-271
Front axles – 10000 lb (4536 kg) and higher 260-300 353-407
Rear axle with multi-leaf 260-300 353-407
Rear axle with IROS air suspension 370-400 502-542
Rear axle with Hendrickson air suspension 400–450 542–610
See air suspension U-bolt re-torquing and installation information below.
Air suspension U-bolt checks and re-torquing procedures
1. Inspect the threads of the U-bolt and nut for rust and debris. Clean
the threads if contaminated.
2. Using a torque wrench, determine if any nuts can be turned with a
force below the specified torque.
3. Using the lowest discovered torqued nut as a starting point, retighten
the nuts using the sequence listed underAir suspension U-bolt and
U-bolt nut installation.
Maintenance and Specifications
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USA(fus)

Air suspension U-bolt and U-bolt nut installation
1. Inspect the threads of the U-bolt and nut for rust and debris. Clean
the threads if contaminated.
2. Install the U-bolts and nuts and torque the nuts to seat the cap flat
which is about 18 ft-lb (25 N•m) using a diagonal pattern. Use the same
diagonal pattern for each of the following U-bolt nut re-torque steps.
3. Tighten U-bolt nuts in increments of 74 ft-lb (100 N•m) until
tightened to final torque for the particular suspension.
DRIVESHAFT
At the regular lubrication interval, check the universal joints for any
evidence of wear or looseness. Should driveshaft vibrations occur, stop
the vehicle immediately to avoid possible hazardous consequences or
damage to other components.
REAR AXLE LUBRICANT
Refer to theScheduled Maintenance Guidechapter for rear axle
lubricant level checks and lubricant change intervals.
Your rear axle may be filled with an optional synthetic lubricant which
allows the use of extended service intervals. A tag on the filler plug will
identify the use of the synthetic lubricant.
Use only a lubricant that meets manufacturer specifications (refer to
Lubricant specificationsin this chapter).
Use of a non-approved rear axle lubricant may cause internal axle
component damage.
Checking the rear axle lubricant level
1. Park the vehicle on level ground.
2. Set the parking brake and shift into N (Neutral) (automatic
transmission) or 1 (First) (manual transmission) and turn the engine off.
3. Clean any dirt from around the rear axle filler plug.
4. Remove the filler plug and inspect the lubricant level.
5. The lubricant level should be up to the bottom of the filler plug
opening.
6. If necessary, add enough lubricant through the filler plug opening so
that the lubricant level is at the bottom of the opening.
7. Clean and install the filler plug securely.
Maintenance and Specifications
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A
Air conditioning ..........................48
manual heating and air
conditioning system .................48
Air suspension ...........................132
Anti-lock brake system
(see Brakes) ..............................130
Audio system (see Radio) ...36, 38
Automatic transmission ............134
fluid, adding ............................218
fluid, checking ........................218
fluid, refill capacities ..............252
fluid, specification ..................237
Auxiliary Input Jack ...................45
Auxiliary power point .................57
Axle ............................143, 184, 223
lubricant specifications ..........237
refill capacities ........................250
B
Battery .......................................193
charging system warning
light ............................................23
jumping a disabled battery ....162
voltage gauge ............................31
Belt-Minder...............................84
Booster seats ...............................99
Brakes ........................111, 116, 185
adjustment ..............................187
anti-lock ...................................130
anti-lock brake system (ABS)
warning light .....................23, 130
brake warning light ..................23
fluid, checking and adding ....215
fluid, specifications .................237
parking ....................112, 119, 188
Bulbs ............................................53C
Cassette tape player ...................36
Catalytic converter
(see Emission control) .............188
Cell phone use ..............................8
Child safety seats ........................92
attaching with tether straps ....96
in front seat ..............................93
in rear seat ..........................93, 95
tether anchorage hardware .....96
Child safety seats - booster
seats .............................................99
Cleaning your vehicle
engine compartment ..............176
exterior ....................................181
instrument panel ....................178
interior .....................................179
plastic parts ............................177
safety belts ..............................179
washing ....................................175
waxing .....................................175
wheels ......................................176
wiper blades ............................177
Climate control (see Air
conditioning or Heating) ............48
Clock adjust
AM/FM/CD .................................45
Clutch ................................137, 216
adjusting ..................................217
fluid ..........................................216
operation while driving ..........137
specifications ..........................237
Console
overhead ....................................57
Controls
power seat .................................76
Coolant ......................................196
Index
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USA(fus)

odometer ...................................31
speedometer .............................31
tachometer ................................31
trip odometer ............................31
H
Hazard flashers
.........................154
Headlamps
...................................51
aiming
........................................52
daytime running lights
.............51
high beam
.................................51
warning chime
..........................23
Heating
heating and air conditioning
system
.......................................48
Hood
..........................................190
I
Ignition
.......................................104
chime
.........................................23
Infant seats (see Safety seats)
..92
Instrument panel
cleaning
...................................178
lighting up panel and
interior
.......................................52
J
Jump-starting your vehicle
......162
K
Keys
key in ignition chime
...............23
positions of the ignition
.........104L
Lamps
bulb replacement
specifications chart ..................53
cargo lamps ...............................52
daytime running light ...............51
headlamps .................................51
high beams ................................51
instrument panel, dimming .....52
interior lamps ...........................53
replacing bulbs ...................53–55
Lane change indicator
(see Turn signal) ........................52
Lights, warning and indicator ....23
air suspension ...........................23
anti-lock brakes (ABS) ....23, 130
brake ..........................................23
charging system ........................23
safety belt .................................23
service engine soon ..................23
traction control off ...................23
turn signal indicator .................23
Locks
childproof ..................................68
Lubricant specifications ...........237
Lumbar support, seats .........75–76
M
Manual transmission .................138
lubricant specifications ..........237
Message center ...........................32
warning messages .....................34
Mirrors .........................................60
fold away .............................61, 63
side view mirrors (power) .......60
signal .........................................63
O
Odometer .....................................31
Index
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2011 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)