2019 FORD F650/750 air suspension

Rear brakes
Inspect for cracked, worn or frayed hoses, and that all coup-
lings are secure.
Hoses
Verify that there are no cracks or dents, and that the cham-
bers are securely mounted.
Brake chambers
Inspect for broken, loose or missing parts.
Slack adjusters
Note: The angle between the push rod and adjuster arm
should be approximately 90 degrees when the brakes are
applied. When pulled by hand, the push rod should not move
more than approximately
1 in (2.5 cm).
Verify that there are no cracks, dents, holes, and no loose or
missing bolts and that the brake linings are not worn,
dangerously thin or contaminated by lubricant.
Drums Rear wheels
Check for even separation of dual wheels, and that the tires
are not touching each other.
Spacers
Inspect for damaged or bent rims. They should not have
welding repairs, and there should be no rust trails, which
indicate it is loose on the wheel.
Rims
Verify all lug nuts are present and not loose (look for rust
trails around the lug nuts). There should be no cracks radiating
from the lug bolt holes or distortion of the bolt holes.
Lug nuts
Trailer
If you are pulling a trailer, perform an
inspection of the trailer similar to that of
the tractor. The inspection should follow
trailer manufacturer recommendations
and should include at a minimum: general
condition, landing gear, doors, sides, lights,
reflectors, suspension, brakes, tires,
wheels, cargo placement, stability and
tie-downs. Transmission WARNING: If the unit starts in gear
and/or the neutral start switch is not
functioning correctly, the vehicle may
inadvertently move which could result
in property damage, personal injury or
death.
Regularly inspect the transmission's
neutral start switch. The engine should
only start in neutral (N) or park (P) (if
equipped with a park position).
185
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Vehicle Inspection Guide

Quality service parts are available through
an authorized dealer. If dealer parts are not
used, make sure the replacement parts are
of equivalent quality.
Working with the Engine Off
1. Set the parking brake and shift to
neutral (N) or park (P).
2. Switch off the engine.
3. Block the wheels.
Working with the Engine On WARNING: To reduce the risk of
vehicle damage and/or personal burn
injuries, do not start your engine with the
air cleaner removed and do not remove
it while the engine is running.
1. Set the parking brake and shift to neutral (N) or park (P).
2. Block the wheels
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.
OPENING AND CLOSING THE
HOOD WARNING:
Always set the parking
brake fully before opening the hood.
Failure to follow this warning could result
in serious personal injury or death. WARNING:
Do not stand under
the hood when you raise or lower it.
Failure to follow this warning could result
in serious personal injury or death. WARNING: If the engine is running
while the hood is open, stay clear of
moving engine components. Failure to
follow this warning could result in serious
personal injury or death.
Opening the Hood
Before opening the hood, set the parking
brake fully, shift into park (P) or neutral
(N) and switch the ignition off.
188
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Maintenance

SUSPENSION SYSTEM
INSPECTION
Note:
Do not adjust air suspension height
to any setting other than the specified
setting. Altering the height setting changes
the driveline angle and may result in
unwarrantable component damage, such
as transmission component damage.
Verify drive axle air suspension height and
height control valve performance at engine
oil change intervals.
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 1,000 mi
(1,600 km) or six months (whichever
comes first), the U-bolt nuts must be
re-torqued. Re-torque the U-bolt nuts
every
37,000 mi (60,000 km)
thereafter. Clean and lubricate the
U-bolt and nut threads and seats to
make sure a like new condition when
re-torqueing. See
Spring U-Bolt
Check (page 228).
FRAME AND TOW HOOK
INSPECTION
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.
REAR AXLE FLUID CHECK
Your rear axle may have an optional
synthetic lubricant that allows the use of
extended service intervals. A tag on the
filler plug identifies the use of the synthetic
lubricant.
Only use a lubricant that meets
manufacturer specifications. Only use a
lubricant that meets manufacturer
specifications. Use of a non-approved rear
axle lubricant may cause internal axle
component damage. See Capacities and
Specifications
(page 261).
Checking the Fluid Level
1. Park your vehicle on level ground.
2. Set the parking brake and shift into position neutral (N) or park (P). Turn
the engine off.
3. Clean any dirt from around the axle filler plug.
4. Remove the filler plug and inspect the lubricant level. It should be at the
bottom of the filler plug opening.
5. Add lubricant, if necessary, through the
filler plug opening.
6. Clean and install the filler plug securely.
Changing the Fluid
Note: Drain the rear axle while the lubricant
is warm.
1. Park your vehicle on level ground.
2. Set the parking brake and shift into position neutral (N) or park (P). Turn
the engine off.
3. Clean any dirt from around the axle filler and drain plugs.
227
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Maintenance

Safety Practices
WARNING: If your vehicle
is stuck in snow, mud or sand, do
not rapidly spin the tires;
spinning the tires can tear the
tire and cause an explosion. A
tire can explode in as little as
three to five seconds. WARNING: Do not spin the
wheels at over
34 mph
(55 km/h). The tires may fail and
injure a passenger or bystander.
Driving habits have a great deal
to do with your tire mileage and
safety.
• Observe posted speed limits
• Avoid fast starts, stops and
turns
• Avoid potholes and objects on
the road
• Do not run over curbs or hit the
tire against a curb when
parking
Highway Hazards
No matter how carefully you drive
there ’s always the possibility that
you may eventually have a flat tire
on the highway. Drive slowly to the
closest safe area out of traffic.
This may further damage the flat
tire, but your safety is more
important. If you feel a sudden vibration or
ride disturbance when driving, or
you suspect your tire or vehicle
has been damaged, immediately
reduce your speed. Drive with
caution until you can safely pull
off the road. Stop and inspect the
tires for damage. If a tire is
under-inflated or damaged,
deflate it, remove wheel and
replace it with your spare tire and
wheel. If you cannot detect a
cause, have the vehicle towed to
the nearest repair facility or tire
dealer to have the vehicle
inspected.
Tire and Wheel Alignment
A bad jolt from hitting a curb or
pothole can cause the front end
of your vehicle to become
misaligned or cause damage to
your tires. If your vehicle seems to
pull to one side when you’re
driving, the wheels may be out of
alignment. Have an authorized
dealer check the wheel alignment
periodically.
Wheel misalignment in the front
or the rear can cause uneven and
rapid treadwear of your tires and
should be corrected by an
authorized dealer. Front-wheel
drive vehicles and those with an
independent rear suspension may
require alignment of all four
wheels.
The tires should also be balanced
periodically. An unbalanced tire
and wheel assembly may result in
irregular tire wear.
249
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Wheels and Tires

Multi-point Inspection
In order to keep your vehicle running right,
it is important to have the systems on your
vehicle checked regularly. This can help
identify potential issues and prevent major
problems. We recommend having the
following multi-point inspection performed
at every scheduled maintenance interval
to help make sure your vehicle keeps
running great.Multi-point Inspection
Horn operation
Accessory drive belt(s)
Radiator, cooler, heater and A/C hoses
Battery performance
Suspension component for leaks ordamage
Engine air filter
Steering and linkage
Exhaust system
Tires (including spare) for wear and properpressure2
Exterior lamps operation
Windshield for cracks, chips or pits
Fluid levels 1
; fill if necessary
Washer spray and wiper operation
For oil and fluid leaks
Hazard warning system operation
Hood rest for lubrication
1 Brake, coolant recovery reservoir, automatic transmission, power steering and window
washer.
2 If your vehicle is equipped with a temporary mobility kit, check the tire sealant expiration
Use By date on the canister. Replace as needed.
Be sure to ask your dealership service
advisor or technician about the multi-point
vehicle inspection. It is a comprehensive
way to perform a thorough inspection of
your vehicle. Your checklist gives you
immediate feedback on the overall
condition of your vehicle. NORMAL SCHEDULED
MAINTENANCE
Intelligent Oil-Life Monitor™
(Diesel Engine Only)
Your diesel engine is equipped with an
Intelligent Oil-Life Monitor that determines
when you should change the engine oil
based on how your vehicle is used. By using
several important factors in its
calculations, the monitor helps reduce the
cost of owning your vehicle and reduces
environmental waste at the same time.
326
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Scheduled Maintenance

Normal Maintenance Intervals
Gasoline Engines
7,500 mi (12,000 km) or Six Months Whichever Comes First
Change the engine oil and filter.
Rotate the tires 1
, inspect tire wear and measure tread depth.
Inspect the wheels and related components for abnormal noise, wear, looseness or
drag.
Perform a multi-point inspection, recommended.
Inspect front oil hubs for leaks and check fluid level through hub cap sight glass.
1 Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only if unusual wear is noted. 15,000 mi (24,000 km) or 12 Months Whichever Comes First
Inspect the automatic transmission fluid level. Consult an authorized dealer for
requirements.
Inspect the brake pads, shoes, rotors, drums, brake linings, hoses and parking brake.
Inspect the engine cooling system concentration, freeze-point protection, level and
hoses.
Inspect the exhaust system and heat shields.
Inspect the steering linkage, ball joints, suspension, tie-rod ends, driveshaft and U-joints.
Lubricate components equipped with grease fittings. Other Maintenance Items
Replace the engine air filter.
Every 30,000 mi
(48,000 km)
Replace the front wheel bearing grease and grease seal
if equipped with non-sealed bearings.
Every
60,000 mi
(96,000 km)
Replace the spark plugs.
Every
97,000 mi
(156,000 km)
Change the engine coolant.1
At
200,000 mi
(322,000 km)
328
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Scheduled Maintenance

At Every Oil Change Interval as Indicated by the Information Display
1
Inspect the steering linkage, ball joints, suspension, tie-rod ends, driveshaft and U-joints.
Lubricate components equipped with grease fittings.
Inspect front oil hubs for leaks and check fluid level through hub cap sight glass.
1 Do not exceed one year or 10,000 mi (16,000 km) between service intervals.
2 Reset the Intelligent Oil-Life Monitor after engine oil and filter changes. See Oil Change
Indicator Reset
(page 196).
3 Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only if unusual wear is noted. Other Maintenance Items
1
Replace the engine-mounted and frame-mounted fuel
filters. 2
Every
22,000 mi
(36,000 km)
Inspect engine and secondary cooling system coolant
concentration, freeze-point protection, additive, corrosion
inhibitor, strength, coolant level, and hoses. Add coolant
additive if necessary.3
Every
30,000 mi
(48,000 km)
Replace the air inlet foam filter.
Every
45,000 mi
(72,000 km)
Inspect the accessory drive belt or belts. 4
At
90,000 mi
(144,000 km))
Change the rear axle fluid. See
Special Operating
Conditions Scheduled Maintenance
(page 331). 5
At
100,000 mi
(160,000 km)
Change the engine and secondary cooling system coolant. 6
At
200,000 mi
(322,000 km)
Change crankcase ventilation filter.
Every
105,000 mi
(168,000 km)
Change the automatic transmission fluid and filter. Consult
an authorized dealer for requirements.
Every
150,000 mi
(240,000 km)
330
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Scheduled Maintenance

Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)
Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.
Change the engine oil and filter. 2
Every 7,500 mi (12,000 km),
six months or 300 engine
hours Inspect and lubricate the U-joints.
Replace the engine-mounted and frame-mounted fuel
filters.
Every 15,000 mi
(24,000 km), 6 months or
600 engine hours
Replace the air inlet foam filter.
Every
30,000 mi
(48,000 km)
1 Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only if unusual wear is noted.
2 Reset the Intelligent Oil-Life Monitor after engine oil and filter changes. Off-road Operation
Inspect functional holes in each leg of the twin exhaust
tips and the holes under the shield just inboard of the right
rear tire to make sure they are clean and clear of debris or
foreign materials. Refer to the Vehicle Care chapter of your
owner ’s manual for more information.
As required
Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.
Rotate the tires1
, inspect the tires for wear and measure
tread depth.
Every 7,500 mi (12,000 km),
six months or 300 engine
hours
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the filter if
necessary.
Change the engine oil and filter. 2
Every 7,000 mi (12,000 km)
or 300 engine hours
338
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Scheduled Maintenance