2021 FORD F-450 air filter

Engine coolant reservoir. See Engine Coolant Check (page 364).
D
Brake fluid reservoir. See
Brake Fluid Check (page 377).
E
Windshield washer fluid reservoir. See
Washer Fluid Check (page 382).
F
Battery.
See Changing the 12V Battery (page 379).
G
Power steering fluid reservoir. See
Power Steering Fluid Check (page 378).
H
Engine oil fill cap. See
Engine Oil Check (page 352).
I
Air filter. See
Changing the Engine Air Filter (page 357).
J
UNDER HOOD OVERVIEW - 6.7L DIESEL Battery.
See Changing the 12V Battery (page 379).
A
Engine compartment fuse box.
See Fuse Specification Chart (page 339).
B
Engine oil dipstick.
See Engine Oil Dipstick (page 352).
C
Secondary fuel filter. See
Changing the Engine-Mounted and Diesel Fuel
Conditioner Module Fuel Filters (page 386).
D
Engine oil filler cap.
See Engine Oil Check (page 354).
E
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Engine cooling system coolant reservoir - primary high-temperature cooling
system. See Engine Coolant Check (page 364).
F
Brake fluid reservoir.
See Brake Fluid Check (page 377).
G
Battery.
See Changing the 12V Battery (page 379).
H
Windshield washer fluid reservoir. See
Washer Fluid Check (page 382).
I
Power steering fluid reservoir. See
Power Steering Fluid Check (page 378).
J
Secondary cooling system coolant reservoir. See Engine Coolant Check
(page
364).
K
Air filter assembly. See
Changing the Engine Air Filter (page 358).
L
Air filter restriction gauge. See
Changing the Engine Air Filter (page 358).
M
UNDER HOOD OVERVIEW - 7.3L Windshield washer fluid reservoir. See
Washer Fluid Check (page 382).
A
Engine coolant reservoir.
See Engine Coolant Check (page 368).
B
Brake fluid reservoir.
See Brake Fluid Check (page 377).
C
Engine compartment fuse box.
See Fuses (page 339).
D
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Power steering fluid reservoir. See Power Steering Fluid Check (page 378).
E
Engine oil dipstick.
See Engine Oil Dipstick (page 352).
F
Engine oil filler cap.
See Engine Oil Check (page 352).
G
Air cleaner assembly. See
Changing the Engine Air Filter (page 357).
H
ENGINE OIL DIPSTICK - 6.2L MINA
MAX
B
ENGINE OIL DIPSTICK - 6.7L
DIESEL Minimum.
A
Maximum.
B ENGINE OIL DIPSTICK - 7.3L
Minimum.
A
Nominal.
B
Maximum.
C
ENGINE OIL CHECK - 6.2L
To check the engine oil level consistently
and accurately, do the following:
1. Make sure that your vehicle is on level ground.
2. Run engine until it reaches normal operating temperature.
3. Make sure the parking brake is on. Make
sure the transmission is in park (P) or
neutral (N).
4. Switch the engine off and wait 15 minutes for the oil to drain into the oil
pan. Checking the engine oil level too
soon after you switch the engine off
may result in an inaccurate reading.
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From the main menu scroll to:
Action and description
Message
Press the down arrow
button, then from this menu
scroll to the following
message.
Truck Info
Press the OK button.
Mainten-
ance
Monitor
Press the down arrow
button, then from this menu
scroll to the following
message.
Oil Life:
xxx%
Press the
OK button.
Oil Life
Press and hold the
OK
button until the instrument
cluster displays the
following message.
Oil Life
Hold OK to
Reset
Oil Life: 100%
When the oil change indic-
ator resets the instrument
cluster displays 100%.
Repeat the process if the oil
change indicator does not
reset.
CHANGING THE ENGINE AIR
FILTER - 6.2L 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.
Use the correct specification air filter
element. See
Motorcraft Parts (page
443). 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
service interval. See
Scheduled
Maintenance (page 565). 1. Disconnect the mass air flow sensor
electrical connector, if required.
2. Remove the air intake tube securing clamp.
3. Pull the air intake tube away from the air filter housing.
4. Remove the clips that secure the air filter housing cover. Remove the air
filter housing cover.
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2
4
3

5.
Remove the air filter element from the
air filter housing.
6. Install in the reverse order.
CHANGING THE ENGINE AIR
FILTER - 6.7L DIESEL 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.
Use the correct specification air filter
element. See
Motorcraft Parts (page
443).
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
service interval. See
Scheduled
Maintenance (page 565). 1. Disconnect the mass air flow sensor
electrical connector, if required.
2. Remove the clips (x3) that secure the air filter housing cover. Remove the air
filter housing cover. Disconnect and
pull the air intake tube away, as
needed. 3.
Remove the air filter element from the
air filter housing.
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4. Remove the auxiliary foam filter from
the air filter housing.
5. To install, reverse the removal procedure. The housing cover can be
oscillated slightly left to right to assist
with installation as needed, until
positioned such that all three clips can
be re-engaged.
Air Filter Restriction Gauge The air filter restriction gauge is in the
upper housing of the air filter assembly. Check the air filter restriction gauge
whenever you open the hood to carry out
general engine maintenance or at least
every 7,500 mi (12,000 km). If you operate
your vehicle in extremely dusty conditions,
check the gauge at least every 500 mi
(800 km) or two weeks, whichever occurs
first. Change the air filter element when
the restriction gauge reads near the
change filter line and the gauge is yellow.
Allowing the restriction gauge to reach
maximum affects engine performance and
fuel economy.
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 restrict air
flow and cause the engine to lose power
or shut down.
After installing a new air filter element, you
must reset the gauge by pressing the reset
button.
After operating your vehicle during heavy
snowfall or extreme rain, do the following:
• Snow: At the earliest opportunity, open
the hood and clear any snow and ice
from the air filter housing inlet and
reset the air filter restriction gauge.
• Extreme rain: The air filter element
dries out after approximately 15– 30
minutes of driving at highway speeds.
At the earliest opportunity, open the
hood and reset the air filter restriction
gauge.
Note: Do not remove the foam filter.
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CHANGING THE ENGINE AIR
FILTER - 7.3L
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 443).
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 565). 1. Locate the mass air flow sensor
electrical connector on the air outlet
tube. Disconnect the mass air flow
sensor electrical connector. 2. Reposition the locking clip on the
connector, squeeze the connector and
pull it off of the air outlet tube. 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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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. 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.
DRAINING THE FUEL FILTER
WATER TRAP - 6.7L DIESEL WARNING: Do not dispose of fuel
in the household refuse or the public
sewage system. Use an authorized waste
disposal facility.
Your vehicle has a 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.
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