Ford F-650/750 (2018 year). Manual — part 54

4. Disconnect the electrical connector.

5. Fully loosen the lower portion of the

diesel fuel conditioner module housing
using the nut cast into the lower
portion.

E250849

6. Remove the lower portion of the diesel

fuel conditioner module housing and
the diesel fuel conditioner module
filter.

Installation

1.

Install the lower portion of the housing.
Tighten by hand until you feel a strong
resistance.

2. Connect the electrical connector.

3. Tighten the drain plug, turn it clockwise

until it stops and you feel a strong
resistance. Do not use any tools to
tighten the drain plug.

4. Switch the ignition on for 30 seconds

and then switch the ignition off.
Repeat this operation six times in a row
to purge any trapped air from the fuel
system.

Engine-mounted Fuel Filter

Although the fuel system is not fully
pressurized when the vehicle is off, some
residual pressure may remain in the fuel
system since it can take some time for the
pressure to completely bleed off.
Therefore, we recommend you place an
absorbent cloth below the filter connectors
to absorb any fuel that may drain.

The engine-mounted fuel filter is a plastic
disposable cartridge.

Removal

E226215

1

1.

Disconnect the fuel lines by squeezing
the connector tabs and pulling the lines
straight off.

E226214

2

3

2. Rotate the filter fully counterclockwise

until the peg is at the far end of the slot.

3. Pull the filter straight up from the

bracket and discard the filter.

Installation

1.

Install the new filter into the filter
bracket. Turn the filter clockwise to
lock it in place.

2. Reconnect the fuel lines.

3. Switch the ignition on for 30 seconds

and then switch the ignition off.
Repeat this operation six times in a row
to purge any trapped air from the fuel
system.

ELECTRICAL SYSTEM
INSPECTION

Periodically inspect electrical connectors
on the outside of the cab and on the engine
and frame for corrosion and tightness.
Exposed terminals, such as the fuel sender,
cranking motor, alternator and
feed-through studs, should be cleaned and

re-coated with a lubricant sealing grease
such as Motorcraft Silicone Brake Caliper
Grease and Dielectric Compound XG-3, or
equivalent. This should include the ground
cable connector for batteries, engine and
cab as well as the jump-starting stud.

Accessory Feed Connections

Vehicle electrical systems are complex and
often include powertrain components,
such as engine and transmission controls,
instrument panels and ABS. While most
systems operate on battery voltage (12
volts), some systems can be as high as 90
volts or as low as five volts. See the
Electrical Circuit Diagram Manuals,
available from your vehicle’s manufacturer,
to make sure that any extra body lights and
accessory connections to circuits are both
appropriate and not overloaded. Do not
make modifications to any vehicle control
system without first contacting an
authorized dealer.

AIR INDUCTION SYSTEM
INSPECTION

WARNING

When performing maintenance to
any turbocharged engine with engine
air inlet piping disconnected, keep

loose clothing, jewelry and long hair away
from the engine air inlet piping. A
turbocharger compressor air inlet
protective shield should be installed over
the turbocharger air inlet to reduce the risk
of personal injury or death.

Perform a complete inspection of the air
induction system annually.

In areas where road salt is used,
disassemble the joints of each aluminum
component and inspect for salt build-up
and presence of chlorine that can cause
aluminum particles to flake off and enter
the engine combustion chambers. If
evidence of corrosion is found (usually at
the pipe connections), use a wire brush to
clean the inside of the pipes and inside the
rubber hoses.

If pitting is evident at the joint ends of the
intake pipes, use Motorcraft Silicone
Gasket and Sealant TA-30 to seal the
joints. Make sure no excess material, which
can pull into the engine, is on the inside of
the pipes. If the service condition of the
pipes, hoses or clamps is questionable,
replace the defective part(s).

Make sure to clean all dust and debris out
of the pipes and couplings with a clean,
damp rag before reassembly.

Chassis-mounted Charge Air
Cooler

Visually inspect the core assembly for
debris and clogging of external fins with
the engine off.

Before engine operation, remove any debris
blocking the core.
•

Turbocharger-to-charge air cooler.

•

Charge air cooler-to-intake manifold
pipe.

•

Mounting bracket.

•

Chassis-mounted charge air cooler
core.

Inspect air intake piping:
•

Check for accumulation of salt
deposits (where applicable). If present,
disassemble and clean the complete
air intake piping system. If pitting is
evident on the intake piping, use
Motorcraft Silicone Gasket and Sealant
TA-30 to seal joints against leakage.

•

Check for loose hoses and clamps.

•

Check for ruptured or collapsed hoses.

•

Check air cleaner housing for cracks.

EXHAUST SYSTEM
INSPECTION

Note: If your vehicle is equipped with a
catalytic converter or muffler, do not blend
waste oil with diesel fuel. Operate only on
ultra-low sulfur (less than 15 parts per
million sulfur) diesel fuel with a cetane
value of 45 or higher.

If your diesel engine is equipped with a
catalytic converter, it is important to review
the maintenance schedule to make sure
proper functioning of the catalytic
converter. Also, take precautions not to
damage the catalytic converter when
servicing your engine or storing your
vehicle.

BRAKE SYSTEM INSPECTION

WARNING

Always wear a respirator approved
by the National Institute of
Occupational Studies of Health

(NIOSH) or Mine Safety and Appliance
(MSA) during all brake service procedures.
Wear the respirator from removal of the
wheels through assembly.

Never use compressed air or dry brushing
to clean brake parts or assemblies.

Clean brake parts and assemblies in open
air. During assembly, carefully place all
parts on the floor to avoid getting dust in
the air. Use an industrial vacuum cleaner
with a HEPA filter system to clean dust
from the brake drums, backing plates and
other brake parts. After using the vacuum,
remove any remaining dust with a rag
soaked in water and wrung until nearly dry.

Never use compressed air or dry sweeping
to clean the work area. Use an industrial
vacuum cleaner with a HEPA filter system
and rags soaked in water and wrung until
nearly dry. Dispose of used rags with care
to avoid getting dust in the air. Use an
approved respirator when emptying
vacuum cleaners and handling used rags.

Worker clean-up: Wash your hands before
eating, drinking or smoking. Vacuum your
work clothes after use and then launder
them separately, without shaking them, to
prevent fiber dust getting into the air.

Your vehicle is equipped with
non-asbestos brake linings. However,
exposure to excessive amounts of brake
material (whether asbestos or
non-asbestos, fiberglass, mineral wool,
aramid or carbon) may be a serious health
hazard.

Air Brakes

WARNING

Do not manually adjust the
automatic slack adjusters to correct
excessive push rod stroke as it may

result in reduced brake effectiveness and
a vehicle crash. Excessive push rod stroke
indicates that a problem exists with the
automatic adjuster, with the installation
of the adjuster, or with foundation brake
components that manual adjustment does
not remedy. Seek service from a qualified
facility for excessive push rod stroke.

Inspection and Adjustment

Establish a regular schedule for periodic
cleaning, lubrication and adjustment
inspection based on vehicle use. Exact
maintenance intervals are difficult to
predetermine due to vehicle applications
and operating conditions. If you are
uncertain of the proper schedule for your
vehicle, contact an authorized dealer.

Regular inspections should include:
•

Periodic checking (every service
interval) of push rod travel or brake
adjustment. This is essential for
effective braking. Brake chamber push
rods on original equipment chambers
now incorporate an orange paint
marker near the base of the push rod