2021 FORD F650/750 drain bolt

Fuses
Fuse Specification Chart
..........................193
Changing a Fuse ..........................................
201
Vehicle Inspection Guide
Vehicle Inspection Information .............
203
Maintenance
General Information ....................................
212
Opening and Closing the Hood ..............
213
Under Hood Overview - 6.7L Diesel ......
215
Under Hood Overview - 7.3L ....................
216
Engine Oil Dipstick - 7.3L ...........................
217
Engine Oil Dipstick - 6.7L Diesel .............
217
Engine Oil Check - 7.3L ...............................
217
Engine Oil Check - 6.7L Diesel ................
218
Changing the Engine Oil and Oil Filter ........................................................................\
.
219
Oil Change Indicator Reset .....................
220
Changing the Engine Air Filter - 6.7L Diesel ............................................................
221
Changing the Engine Air Filter - 7.3L .....
223
Draining the Fuel Filter Water Trap - 6.7L Diesel ...........................................................
225
Engine Coolant Check - 7.3L ...................
226
Engine Coolant Check - 6.7L Diesel ......
231
Automatic Transmission Fluid Check ........................................................................\
236
Brake Fluid Check ........................................
237
Power Steering Fluid Check ....................
238
Changing the 12V Battery ........................
239
Adjusting the Headlamps .......................
240
Washer Fluid Check ...................................
242
Fuel Filter - 7.3L ............................................
242
Checking the Wiper Blades .....................
242
Changing the Wiper Blades ....................
242
Removing a Headlamp .............................
243
Changing a Bulb ..........................................
243Changing the Engine-Mounted and
Diesel Fuel Conditioner Module Fuel
Filters - 6.7L Diesel .................................
244
Electrical System Inspection ..................
247
Air Induction System Inspection ...........
247
Exhaust System Inspection ....................
248
Brake System Inspection .........................
248
Axle Inspection .............................................
251
Steering System Inspection ....................
252
Suspension System Inspection .............
252
Frame and Tow Hook Inspection ..........
253
Rear Axle Fluid Check ................................
253
Spring U-Bolt Check ..................................
253
Vehicle Care
General Information ..................................
255
Cleaning Products ......................................
255
Cleaning the Exterior .................................
256
Waxing .............................................................
257
Cleaning the Engine ...................................
257
Cleaning the Windows and Wiper Blades ........................................................................\
257
Cleaning the Interior ..................................
258
Cleaning the Instrument Panel and Instrument Cluster Lens ......................
258
Repairing Minor Paint Damage .............
259
Cleaning the Wheels .................................
259
Vehicle Storage ...........................................
260
Wheels and Tires
Tire Care .........................................................
262
Using Snow Chains .....................................
277
Changing a Road Wheel ...........................
277
Technical Specifications ..........................
279
Capacities and Specifications
Engine Specifications - 6.7L Diesel .......
281
Engine Specifications - 7.3L ....................
282
Motorcraft Parts - 6.7L Diesel ................
283
4
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Table of Contents

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
Your vehicle is equipped with a diesel fuel
conditioner module located on the
frame-rail under the driver-side floorboard
near the transmission. You should drain water from the
module assembly whenever the
warning light comes on and the
message center directs you to drain the
water separator. This will occur when
approximately 8.45 fl oz (250 ml) of water
accumulates in the module. If you allow
the water level to exceed this level, the
water may pass through to the engine and
may cause fuel injection equipment
damage.
Draining the Diesel Fuel
Conditioner Module (DFCM) WARNING: Do not drain the
water-in-fuel separator while the engine
is running. Failure to follow this warning
may result in fire, serious injury, death or
property damage.
Note: If you drain the diesel fuel conditioner
module while the system is running air will
enter into the fuel system. The engine will
not operate properly if air enters the system.
Note: With fuel tank levels above 3⁄4 tank
it may be necessary to loosen the bowl three
turns before opening the drain. This will
actuate an anti-siphon valve at the fuel and
water separator inlet and prevent the fuel
from siphoning out of the tank.
Note: A loose drain valve can allow air to
enter the fuel system and cause drivetrain
issues. The engine will not operate properly.
Be sure that you fully tighten the drain valve.
1. Stop your vehicle and shut off the engine.
225
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing MaintenanceE317619

Follow the tire manufacturer's
recommended cold inflation pressure for
the tire size, load range (ply rating) and
steer axle loading typical for their operation
(each steer axle tire equals ½ steer axle
loading).
Special applications may warrant a setting
based on experience with the type of tire
operating loads and conditions. Radial tires
are more sensitive to toe-in setting than
bias ply tires. Fine tuning school bus
alignment to line-haul truck standards
does not drastically improve tire tread life.
STEERING SYSTEM
INSPECTION
WARNING: Failure to maintain the
steering system in proper condition can
cause reduced steering ability resulting
in property damage, personal injury or
death.
Note: Have any steering problems
immediately corrected by a qualified service
technician.
Ask your service technician to examine the
steering mechanism. Only minor
adjustments may be necessary.
Regular inspections should include:
• Checking the tie rod, drag link end
clamp bolts and ball joints for proper
tightness.
• Checking for installation and spread of
cotter pins and tightness of nuts at
both ends of the tie rod and drag link.
• Checking that the pitman arm (steering
arm at steering gear) mounting is tight
and locked. Check system for leaks or
hose chafing. Repair immediately, if
necessary. •
Maintaining proper steering gear and
power steering pump lubricant levels.
• Checking steering column joint bolts
and steering linkage, particularly for
body-to-chassis clearance.
Steering Column Joint Bolts
As a good maintenance practice, check
steering column joint bolt tightness every
60,000 mi (96,000 km)
or annually,
whichever occurs first. Do not overtighten
the bolts.
Hydraulic System
Whenever draining and refilling the power
steering's hydraulic system for any reason,
bleed air from the system before returning
the vehicle to service. Failure to bleed the
hydraulic system properly can result in
degradation of power system performance.
Consult an authorized dealer who is aware
of the proper procedures for filling and
bleeding the system.
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.
252
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Maintenance

•
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 253).
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. Use of a
non-approved rear axle lubricant may
cause internal axle component damage.
See
Capacities and Specifications
(page 288).
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.
4. Remove the filler and drain plugs. Drain
the lubricant into a suitable container.
Dispose of all used automotive fluids
in a responsible manner following your
local authorized standards.
5. Clean and install the drain plug securely.
6. Add lubricant through the filler plug opening.
7. Clean and install the filler plug securely.
SPRING U-BOLT CHECK
Check and tighten the U-bolt nuts after
your vehicle has been operated under load
for
1,000 mi (1,600 km) or six months,
whichever occurs first.
Check and tighten the U-bolt nuts every
37,000 mi (60,000 km)
.
Check and tighten the U-bolt nuts with
your vehicle at curb height and unloaded.
253
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Maintenance