Paccar FX-20 User manual

Operator’s Manual
Manuel de L'utilisateur
Manual del Operador
English
Française
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Safety..................................... 1
Maintenance..................................... 2
Contents

© 2022 PACCAR Inc. - All Rights Reserved
This manual illustrates and describes the operation of features or equipment which may be either
standard or optional on this vehicle. This manual may also include a description of features and
equipment which are no longer available or were not ordered on this vehicle. Please disregard any
illustrations or descriptions relating to features or equipment which are not on this vehicle. PACCAR
reserves the right to discontinue, change specifications, or change the design of its vehicles at any
time without notice and without incurring any obligation. The information contained in this manual is
proprietary to PACCAR. Reproduction, in whole or in part, by any means is strictly prohibited without
prior written authorization from PACCAR Inc.
Contents

Chapter 1 | SAFETY
Using this Manual..................................................................................................................................5
Safety Alerts..........................................................................................................................................5
Illustrations............................................................................................................................................6
General Safety Instructions...................................................................................................................6
Repairs..................................................................................................................................................9
SAFETY -
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Using this Manual
Please take the time to get acquainted with
your vehicle by reading this Operator’s
Manual. We recommend that you read and
understand this manual from beginning to
end before you operate this equipment.
This manual contains useful information for
the safe and efficient operation of this
equipment. It also provides service
information, with an outline for performing
safety checks and basic preventive
maintenance inspections. When
replacement parts are needed, we
recommend using only genuine PACCAR
parts.
We have tried to present the information
needed to learn about functions, controls,
and operation—and to present it as clearly
as possible. Occasionally, you may need to
reference this manual, and we hope you
find is easy to use.
NOTE
After you've read this manual, it should
be stored in the cab for convenient ref-
erence and remain with this truck
when sold.
Your vehicle may not have all the features
or options mentioned in this manual.
Therefore, you should pay careful attention
to the instructions that pertain to just your
vehicle. In addition, if your vehicle is
equipped with special equipment or options
not discussed in this manual, consult your
dealer or the manufacturer of the
equipment.
There are several tools built into this
manual to help you find what you need
quickly and easily; first is the Table of
Contents. Located at the front of the
manual, this table arranges the subject
matter into chapters, which can be quickly
referenced using the numbers shown in the
outer margin. The first page of each
chapter presents a list of the major
subjects contained in that chapter. Cross-
referenced citations can also help you find
information. If more information on the
current subject is located elsewhere in the
manual, a cross-reference may be
provided, such as "see Safety Alerts on
page 5." Finally, you’ll find a helpful
index at the back of the manual, which lists
the subjects covered, alphabetically.
All information contained in this manual is
based on the latest production information
available at the time of publication. If you
find differences between your instruments
and the information in this manual, contact
a PACCAR Powertrain distributor.
PACCAR reserves the right to make
changes at any time without notice.
Safety Alerts
Read and follow all of the safety alerts
contained in this manual. They are there
for your protection and information. These
alerts can help you avoid injury to yourself,
your passengers, and help prevent costly
damage to the vehicle. Safety alerts are
highlighted by safety alert symbols and
signal words such as WARNING,
CAUTION, or NOTE. Do not ignore any of
these alerts.
Warnings
The safety message following this symbol
and signal word provides a warning against
operating procedures that could cause
death or injury. They could also cause
SAFETY - Using this Manual
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equipment or property damage. The alert
will identify the hazard, how to avoid it, and
the probable consequence of not avoiding
the hazard.
Example:
WARNING
Hot engine oil can be dangerous. You
could be burned. Let the engine oil
cool down before changing it. Failure
to comply may result in death, person-
al injury, equipment damage, or prop-
erty damage.
Cautions
The safety message following this symbol
and signal word provides a caution against
operating procedures that could cause
equipment or property damage. The alert
will identify the hazard, how to avoid it, and
the probable consequence of not avoiding
the hazard.
Example:
CAUTION
Continuing to operate your vehicle with
insufficient oil pressure will cause seri-
ous engine damage. Failure to comply
may result in equipment or property
damage.
Notes
The message following this symbol and
signal word provides important information
that is not safety related but should be
followed. The alert will highlight things that
may not be obvious but are useful to your
efficient operation of the vehicle.
Example:
NOTE
Pumping the accelerator pedal will not
assist in starting the engine.
Illustrations
Some of the illustrations found in this
manual are generic, and may not look
exactly like the parts or assemblies you
find installed on your vehicle.
When an illustration differs from what you
see physically present on your vehicle, the
language describing the procedure will still
be correct for your application.
General Safety
Instructions
WARNING
Improper practices, carelessness, or
ignoring any warnings may cause
property damage, personal injury, or
death.
Before performing any repair, read and
understand all of the safety precautions
and warnings. The following is a list of
general safety precautions that must be
followed to provide personal safety. Failure
to follow these instructions may cause
death or injury. Special safety precautions
SAFETY - Illustrations
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are included in the procedures when they
apply.
Keep in mind that even a well maintained
vehicle must be operated within the range
of its mechanical capabilities and the limits
of its load ratings. See the Weight Ratings
label on the driver's door edge.
Every new vehicle is designed to conform
to all Federal Motor Vehicle Safety
Standards applicable at the time of
manufacture. Even with these safety
features, continued safe and reliable
operation depends greatly upon regular
vehicle maintenance. Follow the
maintenance recommendations found in
the Preventive Maintenance section. This
will help preserve your investment.
Make sure your vehicle is in top working
condition before heading out on the road, it
is the responsible driver's duty to do so.
Inspect the vehicle according to the
Driver's Check List.
• Work areas should be dry, well lit,
well ventilated, free from clutter,
loose tools, parts, ignition sources
and hazardous substances.
• Wear protective glasses and
protective shoes when working.
• Wear protective gloves when
working with hot liquids or
surfaces.
• DO NOT wear loose-fitting or torn
clothing. Tie back and/or tuck in
long hair. Remove all jewelry when
working.
• Before beginning any repair,
disconnect the battery (negative [-]
cable) and discharge any
capacitors.
• Put a “DO NOT OPERATE” tag in
the operator's compartment or on
the controls.
• Allow the engine to cool before
slowly loosening the coolant fill cap
to relieve the pressure from the
cooling system.
WARNING
Removing the fill cap on a hot engine
can cause scalding coolant to spray
out and burn you badly. If the engine
has been in operation within the previ-
ous 30 minutes, be very careful in re-
moving the fill cap. Protect face,
hands, and arms against escaping flu-
id and steam by covering the cap with
a large, thick rag. DO NOT try to re-
move it until the surge tank cools down
or if you see any steam or coolant es-
caping. Always remove the cap very
slowly and carefully. Be ready to back
off if any steam or coolant begins to
escape. Failure to comply may result
in death, personal injury, equipment or
property damage.
• Always use wheel chocks or proper
jack stands to support the vehicle
or vehicle components before
performing any service work. DO
NOT work on anything that is
supported only by lifting jacks or a
hoist. Before resting a vehicle on
jack stands, be sure the stands are
rated for the load you will be
placing on them.
• Before removing or disconnecting
any lines, fittings, or related items,
relieve all pressure in the air, oil,
fuel, and cooling systems. Remain
alert for possible pressure when
disconnecting any device from a
system that contains pressure.
High-pressure oil or fuel can cause
death or personal injury.
• Always wear protective clothing
when working on any refrigerant
lines and make sure that the
workplace is well ventilated.
SAFETY - General Safety Instructions
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Inhalation of fumes can cause
death or personal injury. To protect
the environment, liquid refrigerant
systems must be properly emptied
and filled using equipment that
prevents the release of refrigerant
gas. Federal law requires capturing
and recycling refrigerant.
• When moving or lifting any heavy
equipment or parts, make sure to
use proper techniques and
assistance. Ensure all lifting
devices such as chains, hooks, or
slings are in good condition and
are of the correct load capacity.
Make sure all lifting devices are
positioned correctly.
• Corrosion inhibitors and lubricating
oils may contain alkali. DO NOT
get the substance in eyes and
avoid prolonged or repeated
contact with skin. DO NOT
swallow. If ingested, seek
immediate medical attention. DO
NOT induce vomiting. In case of
contact, immediately wash skin
with soap and water. In case of
harmful contact, immediately
contact a physician. Always keep
any chemicals OUT OF REACH
OF CHILDREN.
• Naphtha and Methyl Ethyl Ketone
(MEK) are flammable materials and
must be used with caution. Follow
the manufacturer's instructions to
ensure safety when using these
materials. Always keep any
chemicals OUT OF REACH OF
CHILDREN.
• When working on the vehicle, be
alert for hot parts on systems that
have just been turned off, exhaust
gas flow, and hot fluids in lines,
tubes, and compartments. Contact
with any hot surface may cause
burns.
• Always use tools that are in good
condition. Make sure you have the
proper understanding of how to use
the tools before performing any
service work. Use only genuine
replacement parts from PACCAR.
• Always use the same fastener part
number (or equivalent) when
replacing items. DO NOT use a
fastener of lesser quality if
replacements are necessary. (e.g.,
DO NOT replace an SAE 10.9
grade with 8.8 grade fastener.)
• Always torque fasteners and fuel
connections to the required
specifications. Overtightening or
under-tightening can allow leakage.
• Close the manual fuel valves prior
to performing maintenance and
repairs, and when storing the
vehicle inside.
• DO NOT perform any repair when
impaired, tired, fatigued, or after
consuming alcohol or drugs that
can impair your functioning.
• Some state and federal agencies in
the United States of America have
determined that used engine oil
can be carcinogenic and can cause
reproductive toxicity. Avoid
inhalation of vapors, ingestion, and
prolonged contact with used engine
oil.
• DO NOT connect the jump starting
or battery charging cables to any
ignition or governor control wiring.
This can cause electrical damage
to the ignition or governor.
• Coolant is toxic. If not reused,
dispose of coolant in accordance
with local environmental
regulations.
SAFETY - General Safety Instructions
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CAUTION
Corrosive chemicals can damage the
engine. DO NOT use corrosive chemi-
cals on the engine. Failure to comply
may result in equipment or property
damage.
California Proposition 65 Warning
• Diesel engine exhaust and some of
its constituents are known to the
State of California to cause cancer,
birth defects, and other
reproductive harm.
• The catalyst substrate located in
the Diesel Particulate Filter (DPF)
contains vanadium pentoxide,
which has been determined by the
State of California to cause cancer.
Always wear protective clothing
and eye protection when handling
the catalyst assembly. Dispose of
the catalyst in accordance with
local regulations. If catalyst
material gets into the eyes,
immediately flood eyes with water
for a minimum of 15 minutes. Avoid
prolonged contact with skin. In
case of contact, immediately wash
skin with soap and water. In case
of harmful contact, immediately
contact a physician.
• Other chemicals in this vehicle are
also known to the State of
California to cause cancer, birth
defects or other reproductive harm.
• Battery posts, terminals, and
related accessories contain lead
and lead compounds, chemicals
known to the State of California to
cause cancer and reproductive
harm. Wash hands after handling.
Repairs
WARNING
DO NOT attempt repair work without
sufficient training, service manuals,
and the proper tools. You could be kil-
led or injured, or you could make your
vehicle unsafe. Perform only those
tasks you are fully qualified to do.
WARNING
Modifying your vehicle can make it un-
safe. Some modifications can affect
your vehicle's electrical system, stabili-
ty, or other important functions. Before
modifying your vehicle, check with
your dealer to make sure it can be
done safely. Improper modifications
can cause death or personal injury.
CAUTION
The installation of electronic devices to
the On-board Diagnostics (OBD) con-
nector, the vehicle Controller Area Net-
work (CAN), or their associated wiring
is not permitted. Doing so can ad-
versely affect vehicle performance
and/or cause fault codes to be record-
ed. The OBD connector is provided for
temporary connection of service tools
and for diagnostic purposes only.
Your dealer’s service center is the best
place to have your vehicle repaired. You
can find dealers all over the country with
the equipment and trained personnel to get
SAFETY - Repairs
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you back on the road quickly—and keep
you there.
Your vehicle is a complex machine.
Anyone attempting repairs on it needs
good mechanical training and the proper
tools. However, all warranty repairs must
be performed by a PACCAR Powertrain
distributor. If you aren’t an experienced
mechanic, or don’t have the right
equipment, please leave all repairs to a
PACCAR Powertrain distributor. They are
the ones best equipped to do the job safely
and correctly.
Maintenance Manuals
If you decide to do any complex repair
work, you’ll need the maintenance
manuals. Order them from your PACCAR
Powertrain distributor. Please provide your
Chassis Serial Number when you order, to
be sure you get the correct manuals for
your vehicle. Allow about four weeks for
delivery. There will be a charge for these
manuals.
Final Chassis Bill of Material
A complete, non-illustrated computer
printout listing of the parts used to custom-
build your vehicle is available through the
dealer from whom you purchased your
vehicle.
SAFETY - Repairs
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SAFETY - Repairs
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Chapter 2 | MAINTENANCE
FX-20 / FX-22 Axle Lubrication Intervals............................................................................................ 13
FX-20 / FX-22 Axle Lubrication...........................................................................................................14
MAINTENANCE -
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FX-20 / FX-22 Axle
Lubrication Intervals
Steer Axles
Type of Lube System Lubricant SAE Change Interval for Line Haul Change Interval for
Vocational
Kingpin Joint Grease /
Tie Rod Ends
Heavy-Duty
Multipurpose Lithium
Based
#1 Grade or
#2 Grade
25,000 miles (40,000 km) or 6
months
Every 50 hours
Steer Axle Wheel Ends
Type of Lube
System
Lubricant SAE Change Interval for Line
Haul
Change Interval for Vocational
Steer Axle Oil Bath
LMS
Synthetic SAE 75W-90 500,000 miles (800,000
km) or 5 years
120,000 miles (193,000 km) or 2 years
Steer Axle Oil Bath
(Adjusted)
Synthetic SAE 75W-140,
SAE 50
120,000 miles (193,000
km) or 1 year
60,000 miles (95,000 km) or 6 months
MAINTENANCE - FX-20 / FX-22 Axle Lubrication Intervals
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Type of Lube
System
Lubricant SAE Change Interval for Line
Haul
Change Interval for Vocational
Steer Axle Oil Bath
(Adjusted)
Mineral Base SAE 75W,
75W-90,
75W140,
80W-90,
85W-140
120,000 miles (193,000
km) or 1 year
60,000 miles (95,000 km) or 6 months
Steer Axle Semi-
Fluid (Adjusted)
Semi-Fluid
Synthetic Grease
Delo SF, Mobil
SHC 007
120,000 miles (193,000
km) or 1 year
60,000 miles (95,000 km) or 6 months
Steer Axle Grease
Pack (Adjusted)
Heavy-Duty
Multipurpose
Lithium Base
#2 Grade 120,000 miles (193,000
km) or 1 year
60,000 miles (95,000 km) or 6 months
FX-20 / FX-22 Axle
Lubrication
Kingpins, Thrust Bearings, and Tie
Rod Ends
On-Highway Applications - Standard
• Pressure lubricate every 6 months
or 25,000 miles (40,000 km).
• A more frequent lubrication cycle is
required for axles used in on/off-
highway, refuse, or other severe
service applications. Use heavy-
duty, multipurpose lithium base (#2
grade) grease.
NOTE
DO NOT mix with sodium-based
grease.
MAINTENANCE - FX-20 / FX-22 Axle Lubrication
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Front Axle Lube Points
1
23
1. Upper kingpin bearing
2. Tie rod end
3. Lower kingpin bearing
NOTE
If it is difficult to grease either the up-
per or lower bearing, try greasing the
bearings with the vehicle jacked up
and supported on axle stands to im-
prove grease flow and flush contami-
nation.
Oil Bath
Lubricate wheel end assembly with a drive
axle lubricant that meets MIL-L-2105D
specifications. Either SAE 80W-90 mineral
based or 75W-90 synthetic gear oil is
acceptable. Check the lubricant level at
each greasing interval. Maintain the
lubrication fluid level at centerline of axle or
fill line on hub cap. Always check fluid level
on flat ground.
MAINTENANCE - FX-20 / FX-22 Axle Lubrication
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CAUTION
Never mix oil bath and grease-packed
wheel ends. Mixing oil and grease will
reduce the effectiveness of both lubri-
cants and may cause damage to the
wheel ends.
MAINTENANCE - FX-20 / FX-22 Axle Lubrication
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MAINTENANCE - FX-20 / FX-22 Axle Lubrication
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