2015 FORD F750 air suspension

Periodically check:
•Condition of spring leaves for evidence of fatigue, bending or
breakage.
•Condition of suspension mounting brackets and bushings.
•Torque rod mounting fasteners for tightness.
•For proper suspension alignment. Maintain proper alignment at all
times.
•U-bolts. After the chassis has been operating under load for
1000 miles (1600 kilometers) or six months (whichever comes first),
the U-bolt nuts must be re-torqued. Re-torque the U-bolt nuts every
36000 miles (60000 kilometers) thereafter. Clean and lubricate the
U-bolt and nut threads and seats to make sure a like new condition
when re-torqueing.
Note:SeeSpring U-bolt checklater in this chapter.
Supporting Your Vehicle for Service
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.
Prepare your vehicle for service repairs by doing the following:
1. Park your vehicle on a level, concrete floor.
2. Set the parking brake and block the wheels to prevent your vehicle
from moving.
3. Select a jack with a rated capacity sufficient to lift and hold up your
vehicle.
4. Raise your vehicle with the jack applied to the axle(s). Do not use
the bumper as a lifting point.
5. Support your vehicle with floor stands under the axle(s). When
servicing the axle or the suspension, support your vehicle with floor
stands under the frame side-members, preferably between the axles.
Frame and Tow Hooks
Your vehicle’s chassis is manufactured with frame rails of either HSLA
steel or heat-treated steel. Handle each in a specific manner to make
sure maximum service life. Consult the service manual or an authorized
dealer before attempting frame repair or modification.
It is important, particularly on vehicles that use tow hooks frequently, to
inspect the front and rear tow hooks for damage or a loose mounting.
Maintenance207
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SPRING U-BOLT CHECKS
Check U-bolt nuts and re-torque every 36000 miles (60000 kilometers)
after initial 1000-mile (1600 kilometer) re-torque. Clean and lubricate the
U-bolt and nut threads and seats to make sure they are in 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 axle – 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-torqueing and installation information below.
Air Suspension U-bolt Checks and Re-torqueing 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 you can turn any nuts with a
force below the specified torque.
3. Using the lowest discovered torqued nut as a starting point,
re-tighten the nuts using the sequence listed underAir suspension
U-bolt and U-bolt nut installation.
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.
BRAKE FLUID CHECK
WARNING:Brake fluid is toxic. If brake fluid contacts the eyes,
flush eyes with running water for 15 minutes. Seek medical
attention if irritation persists. If taken internally, drink water and induce
vomiting. Seek medical attention immediately.
220Maintenance
2015 F-650/750(f67)
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suspension components may emit squeak or popping noises while
operating your vehicle if particles, such as dirt, rocks, or other debris,
are present in the components.
Cleaning Plastic Exterior Parts
Use only approved products to clean plastic parts.
•For routine cleaning, use Motorcraft Detail Wash.
•If tar or grease spots are present, use Motorcraft Bug and Tar
Remover.
WAXING
Regular waxing is necessary to protect the paint on your car from the
elements. We recommend that you wash and wax the painted surface
once or twice a year.
When washing and waxing, park your vehicle in a shaded area out of
direct sunlight. Always wash your vehicle before applying wax.
•Use a quality wax that does not contain abrasives.
•Follow the manufacturer’s instructions to apply and remove the wax.
•Apply a small amount of wax in a back-and-forth motion, not in
circles.
•Do not allow wax to come in contact with any non-body (low-gloss
black) colored trim. The wax discolors or stains the parts over time,
such as:
•Bumpers
•Grained door handles
•Side mouldings
•Mirror housings
•Windshield cowl area.
•Do not apply wax to glass areas.
•After waxing, your car’s paint should feel smooth, and be free of
streaks and smudges.
REPAIRING MINOR PAINT DAMAGE
Your authorized dealer has touch-up paint to match your vehicle’s color.
Take your color code (printed on a sticker in the driver’s door jamb) to
an authorized dealer to make sure you get the correct color.
•Remove particles, such as bird droppings, tree sap, insect deposits, tar
spots, road salt and industrial fallout, before repairing paint chips.
•Always read the instructions before using the products.
236Vehicle Care
2015 F-650/750(f67)
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Irregular Wear:If irregular wear is present, check the axle alignment,
tire pressure, wheel balancing, shock and suspension component
condition, and wheel bearing end play.
This condition not only shortens tire life, but also adversely affects the
handling of your vehicle, which is dangerous.
Rotating tires from one wheel position to another is an often-used way to
even out many types of irregular wear or to avoid it altogether. Some of
the more effective tire rotation programs are:
•You can rotate steer tires that have developed some type of irregular
wear pattern to drive axles if using rib tires on all wheel positions.
Applying steer tires to a drive position often cleans them. You can
move them back to the steer axles or run out to re-tread stage on the
rear axle.
•Another rotation possibility for fleets with rib tires in all wheel
positions is to break in the new steer tires in the drive axle positions,
then move them to steer axles. This wears away tread rubber
relatively quickly in the early life of a tire when it is most likely to
develop an unusual wear pattern.
•You can place drive axle tires on the other end of the same axle to
reverse the direction of rotation. This is often helpful if a heel and
toe or alternate lug wear pattern has developed.
You can help minimize irregular wear by:
•Using the right inflation pressure for the load being carried.
•Maintaining proper front wheel alignment, especially toe-in, to
specifications.
•Maintaining proper tire and wheel balance.
•Maintaining shock absorbers and suspension components.
Use of Tire Chains
See the chain manufacturer’s recommendation for correct tire chain
usage, installation and removal.
WHEELS
General Information
Note:Remember to replace the wheel air valves when replacing the road
tires at the end of their useful lives.
Inspect, lubricate and adjust wheel bearings at regular intervals. This is
especially important if operating in deep sand, mud or water. See the
Capacities and Specificationschapter.
Mount wheel balance weights on the dome-side of the wheel only. Failure
to do so may result in loss of wheel weight or damage to brakes or
wheels.
Wheels and Tires249
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Daily Owner Checks
U.S. Department
of Transportation,
Federal Highway
Administration
Requirements
(Make sure the
entire system is
functioning
properly.)Service brakes and parking brake.
Steering mechanism.
Lighting devices and reflectors.
Tires.
Horn.
Windshield wipers.
Rear vision mirrors.
Wheels and rims.
Emergency equipment.
Every Oil Change
EngineInspect engine cooling system hoses, clamps and
protection.
*
Inspect drive belt(s).
Exhaust SystemInspect entire exhaust system (including the inlet
pipe(s), muffler(s), outlet pipe(s), clamps and
fasteners) for holes, leakage, breakage, corrosive
damage and separation from other components.
Adjust, service or replace with the same or the
equivalent part. (Also a noise emission control
service.)
SuspensionTighten the front and rear spring U-bolts to the
specified torque.
Driveline and
Rear AxleLubricate the U-joints and the slip yoke.
BrakesLubricate the air brake foot control valve, hinge
and roller.
Inspect the drum brake linings through the
inspection holes.
Lubricate the rear caliper slide rails.
Lubricate the brake camshafts and slack adjuster
(air brakes only).
Inspect the disc brake pads and the piston boots
(hydraulic brakes only).
342Scheduled Maintenance
2015 F-650/750(f67)
Owners Guide gf(ownloose), 1st Printing, December 2013
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911 Assist™ ..............................308
A
ABS (see Brakes) .....................139
Accessing call history/phone
book during active call .............294
Accessing your media menu
features ......................................318
Accessing your phone menu
features ......................................296
Active call menu options .........294
Advanced menu options ...304, 324
Advanced menu options
(prompts, languages, defaults,
master reset, installing
applications) ..............................304
Air cleaner filter ...............228, 272
Air conditioning ..........................76
manual heating and air
conditioning system .................76
Air filter .............................228, 272
Air suspension ...........................162
Antifreeze (see Engine
coolant) .....................................212
Anti-lock brake system (see
Brakes) ......................................139
AppLink™ .................................313
Audio system
Single CD ........................277–278
Audio system
(see Radio) ........................277–278
Automatic transmission ....126, 128
fluid, adding ............................215
fluid, checking ........................215
fluid, refill capacities ..............268
fluid, specification ..................255Auxiliary input jack (Line in) ..280
Auxiliary powerpoint ..................91
Axle ............................134, 200, 219
lubricant specifications ..........255
refill capacities ........................268
B
Battery .......................................224
acid, treating emergencies .....224
jumping a disabled battery ....178
maintenance-free ....................224
replacement, specifications ...272
servicing ..................................224
Booster seats ...............................28
Brakelamp
bulb replacement ....................231
Brakes ........................138–139, 200
adjustment ..............................203
anti-lock ...................................139
anti-lock brake system (ABS)
warning light ...........................139
brake warning light ................139
fluid, checking and adding ....220
fluid, specifications .................255
parking ....................148, 152, 204
shift interlock ..........................127
trailer .......................................169
Bulbs ..........................................233
C
Catalytic converter (see
Emission control) .....................205
CD ......................................277–278
CD player ..................................275
Cell phone use ............................11
Child safety seats
attaching with tether straps ....36
378Index
2015 F-650/750(f67)
Owners Guide gf(ownloose), 1st Printing, December 2013
Canadian_French(fr_can)