Ford F-550 (2017 year). Manual — part 141

Ford Motor Company has recommended
maintenance intervals for various parts
and component systems based upon
engineering testing. Ford Motor Company
relies upon this testing to determine the
most appropriate mileage for replacement
of oils and fluids to protect your vehicle at
the lowest overall cost to you and
recommends against maintenance
schedules that deviate from the scheduled
maintenance information.

We strongly recommend the use of only
genuine Ford, Motorcraft or
Ford-authorized re-manufactured
replacement parts engineered for your
vehicle.

Additives and Chemicals

This owner's manual and the Ford
Workshop Manual list the recommended
additives and chemicals for your vehicle.
We do not recommend using chemicals or
additives not approved by us as part of
your vehicle’s normal maintenance. Please
consult your warranty information.

Oils, Fluids and Flushing

In many cases, fluid discoloration is a
normal operating characteristic and, by
itself, does not necessarily indicate a
concern or that the fluid needs to be
changed. However, a qualified expert, such
as the factory-trained technicians at your
dealership, should inspect discolored fluids
that also show signs of overheating or
foreign material contamination
immediately.

Make sure to change your vehicle’s oils and
fluids at the specified intervals or in
conjunction with a repair. Flushing is a
viable way to change fluid for many vehicle
sub-systems during scheduled
maintenance. It is critical that systems are
flushed only with new fluid that is the same
as that required to fill and operate the
system or using a Ford-approved flushing
chemical.

Owner Checks and Services

Make sure you perform the following basic
maintenance checks and inspections every
month or at six-month intervals.

Check every month

Air filter restriction gauge.

Fuel and water separator. Drain if necessary (or if indicated by the information display).

Tires (including spare) for wear and proper pressure.

Holes and slots in the tail pipe to make sure they are functional and clear of debris.

Tightening lug nuts

Tighten the lug nuts to the specified torque at 500 miles
(800 km) after any wheel disturbance (such as tire rota-
tion, changing a flat tire or wheel removal).

Vehicles with single rear

wheels

Tighten the wheel lug nuts to the specified torque at 100

miles (160 km), and again at 500 miles (800 km) of new

vehicle operation and after any wheel disturbance (such

as tire rotation, changing a flat tire or wheel removal).

Vehicles with dual rear

wheels

Note: Tighten the lug nuts to the specified torque. See Technical Specifications (page
409).

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 or

damage

Engine and cabin air filter

Steering and linkage

Exhaust system

Tires (including spare) for wear and proper

pressure

**

Exterior lamps and hazard warning system

operation

Windshield for cracks, chips or pits

Fluid levels

*

; fill if necessary

Washer spray and wiper operation

For oil and fluid leaks

*

Brake, coolant recovery reservoir, automatic transmission, power steering and window

washer.

**

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

Gasoline Engine(s)

Normal Maintenance Intervals

Every 7500 miles (12000 km) or six months (whichever comes first)

Change engine oil and filter.

Rotate tires

*

, inspect tire wear and measure tread depth.

Inspect wheels and related components for abnormal noise, wear, looseness or drag.

Perform multi-point inspection (recommended).

*

Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels

only if unusual wear is noted.

Every 15000 miles (24000 km) or 12 months (whichever comes first)

Inspect automatic transmission fluid level. Consult dealer for requirements.

Inspect brake pads, shoes, rotors, drums, brake linings, hoses and parking brake.

Inspect engine coolant concentration (freeze-point protection), level and hoses.

Inspect exhaust system and heat shields.

Inspect front axle and U-joints. Lubricate if equipped with grease fittings (Four-wheel
drive vehicles).

Inspect steering linkage, ball joints, suspension, tie-rod ends, driveshaft and U-joints.
Lubricate if equipped with grease fittings.

Other maintenance items

Replace cabin air filter.

Every 15000 miles (24000
km)

Replace engine air filter.

Every 30000 miles (48000
km)

Change automatic transmission fluid and filter on 5-speed
transmission. Consult dealer for requirements.

Every 60000 miles (96000
km)

Replace front wheel bearing grease and grease seal if non-
sealed bearings are used.

Replace spark plugs.

Every 97500 miles (156000
km)

Change engine coolant.

*

Every 105000 miles
(168000 km)

Inspect accessory drive belt(s).

**

Change automatic transmission fluid and filter on 6-speed
transmission. Consult dealer for requirements.

Every 150000 miles
(240000 km)

Replace accessory drive belt(s) if not replaced within the
last 100000 miles (160000 km).

Replace front wheel bearings and seals if non-sealed
bearings are used.

Change axle(s) fluid. (see exceptions)

Change transfer case fluid. (if equipped)

*

Initial replacement at six years or 105000 miles (168000 kilometers), then every three

years or 45000 miles (72000 kilometers).

**

If not replaced, inspect every 15000 miles (24000 kilometers).