Ford F-650/750 (2018 year). Manual — part 53

E206906

x3

2. Remove the clips that secure the air

filter housing cover. Push the air filter
cover forward (away from you) and up
slightly to release it.

3. Remove the air filter element from the

air filter housing.

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4. Remove and install a new foam filter

if needed according to the service
interval indicated in the scheduled
maintenance information in this guide.
If you do not replace the foam filter, be
sure the existing foam filter is in place.

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5. Install a new air filter element. Be sure

that the groove seal on the pleated
paper filter traps both sides of the
vertical partition of the air box.

6. Engage the clips to secure the air filter

housing cover to the air filter housing.
Be careful not to crimp the filter
element edges between the air filter
housing and cover. Ensure that you
align the tabs on the edge properly into
the slots.

7.

Reconnect the mass airflow sensor
electrical connector to the inlet tube.
Make sure the locking tab on the
connector is in the locked position.

Air Purge Procedure

Turn the key on for 30 seconds, and then
turn off. Repeat the procedure six times.

CHANGING THE ENGINE AIR
FILTER - 6.8L

WARNING

To reduce the risk of vehicle damage
and personal burn injuries, do not
start your engine with the air cleaner

removed and do not remove it while the
engine is running.

Note: Operating your vehicle in heavy
snowfall or extreme rain conditions may
allow excessive amounts of snow or water
into the air intake system. This could plug
or soak the air filter that could cause the
engine to lose power or shut down.

When replacing the air filter element, use
a Motorcraft® air filter element. See
Motorcraft Parts (page 258).

Note: Failure to use the correct air filter
element may result in severe engine
damage. Resulting component damage
may not be covered by the vehicle Warranty.

Change the air filter element at the correct
interval. See Scheduled Maintenance
(page 320).

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1.

Locate the mass air flow sensor
electrical connector on the air outlet
tube. Disconnect the mass air flow
sensor electrical connector.

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2. Reposition the locking clip on the

connector (connector shown from
below for clarity), squeeze the
connector and pull it off of the air
outlet tube.

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3. Clean the area from around the air tube

to the air cover connection to prevent
debris from entering the system. Next,
loosen the bolt on the air tube clamp
so the clamp is no longer snug to the
air tube. It is not necessary to
completely remove the clamp.

4. Pull the air tube off from the air cleaner

housing.

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x3

5. Remove the clips that secure the air

filter housing cover. Push the air filter
cover toward the center of the vehicle
and up slightly to release it.

6. Remove the air filter element from the

air filter housing.

7.

Install the new air filter element.

8. Engage the clips to secure the air filter

housing cover to the air filter housing.
Be careful not to crimp the filter
element edges between the air filter
housing and cover. Ensure that you
align the tabs on the edge properly into
the slots.

9. Slip the air tube onto the air filter

housing and tighten the air-tube clamp
bolt snugly. Do not over tighten
air-tube clamp bolt.

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10.

Reconnect the mass air flow sensor
electrical connector to the outlet
tube. Make sure the locking tab on
the connector is in the locked position
(connector shown from below for
clarity).

CHANGING THE ENGINE-
MOUNTED AND DIESEL FUEL
CONDITIONER MODULE FUEL
FILTERS

WARNING

Do not dispose of fuel in the
household refuse or the public
sewage system. Use an authorized

waste disposal facility.

Your vehicle has two fuel filters. The first
filter mounts on top of the engine on the
left-hand side. The second filter is inside
the diesel fuel conditioner module. The
module is mounted between the outboard
side of the fuel tank and the frame rail.

Note: The module is at the front of the fuel
tank or at the front of the aft-axle fuel tank
on some models.

Regular fuel filter changes are an
important part of engine maintenance;
failing to keep with the scheduled
maintenance could lead to engine
performance issues and fuel injection
system damage. See Scheduled
Maintenance (page 320).

Use only recommended service parts
conforming to specifications. See
Motorcraft Parts (page 257).

Note: Using fuel that has high levels of
impurities may require more frequent filter
replacements than the service interval
specifies.

Diesel Fuel Conditioner Module

Filter

Removal

1.

Access the underside of your vehicle.

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2. The diesel fuel conditioner module is

on the left-hand frame rail.

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3. Drain the diesel fuel conditioner

module. Turn the drain plug
counterclockwise until it stops. Do not
use any tools to loosen the drain plug.
Drain the filter, approximately 0.5 gal
(2 L), into an appropriate container.
Do not re-use the fuel drained from the
module.

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