Reporting Safety Defects (U.S. Only)
........................................................................\
.197
Reporting Safety Defects (Canada Only) ........................................................................\
198
Fuses
Fuse Specification Chart ..........................
199
Changing a Fuse ..........................................
207
Vehicle Inspection Guide
Vehicle Inspection Information .............
209
Maintenance
General Information ...................................
218
Opening and Closing the Hood ..............
219
Under Hood Overview - 6.7L Diesel ......
221
Under Hood Overview - 7.3L ...................
222
Engine Oil Dipstick - 6.7L Diesel ............
223
Engine Oil Dipstick - 7.3L ..........................
223
Engine Oil Check - 6.7L Diesel ................
223
Engine Oil Check - 7.3L .............................
224
Changing the Engine Oil and Oil Filter ........................................................................\
225
Oil Change Indicator Reset .....................
226
Changing the Engine Air Filter - 6.7L Diesel ...........................................................
227
Changing the Engine Air Filter - 7.3L .....
229
Draining the Fuel Filter Water Trap - 6.7L Diesel ............................................................
231
Engine Coolant Check - 6.7L Diesel ......
232
Engine Coolant Check - 7.3L ...................
237
Automatic Transmission Fluid Check ........................................................................\
.
241
Brake Fluid Check .......................................
243
Power Steering Fluid Check ...................
244
Changing the 12V Battery ........................
245
Adjusting the Headlamps .......................
246
Washer Fluid Check ...................................
248
Fuel Filter - 7.3L ...........................................
248
Checking the Wiper Blades ....................
248
Changing the Wiper Blades ....................
248Removing a Headlamp
............................
249
Changing a Bulb .........................................
249
Changing the Engine-Mounted and Diesel Fuel Conditioner Module Fuel
Filters - 6.7L Diesel .................................
250
Electrical System Inspection ..................
253
Air Induction System Inspection ...........
253
Exhaust System Inspection ....................
254
Brake System Inspection .........................
254
Axle Inspection .............................................
257
Steering System Inspection ...................
258
Suspension System Inspection .............
258
Frame and Tow Hook Inspection .........
259
Rear Axle Fluid Check ...............................
259
Spring U-Bolt Check ..................................
259
Vehicle Care
General Information ...................................
261
Cleaning Products .......................................
261
Cleaning the Exterior .................................
262
Waxing ............................................................
263
Cleaning the Engine ...................................
263
Cleaning the Windows and Wiper Blades ........................................................................\
264
Cleaning the Interior ..................................
264
Cleaning the Instrument Panel and Instrument Cluster Lens ......................
265
Repairing Minor Paint Damage .............
265
Cleaning the Wheels .................................
265
Vehicle Storage ...........................................
266
Wheels and Tires
Tire Care .........................................................
268
Using Snow Chains ....................................
283
Changing a Road Wheel ..........................
283
Technical Specifications ..........................
285
Capacities and Specifications
Engine Specifications - 6.7L Diesel ......
286
4
2022 F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Table of Contents
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.
258
2022 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 259).
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
Rear Axle Fluid Capacity and
Specification (page 303).
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.
259
2022 F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Maintenance