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Cat 3054 and 3056 operation and maintenance manual
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SEBU6515-06
July 2001
Operation and
Maintenance
Manual
3054 and 3056 Industrial and
Generator Set Engines
4ZK1-Up (Engine)
6FK1-Up (Engine)
7AK1-Up (Engine)
1ML1-Up (Engine)
5YS1-Up (Engine)
7MS1-Up (Engine)
2PW1-Up (Engine)
3GW1-Up (Engine)
This Manual Must be Accessible at the Point of Operation

i01097883
Important Safety Information
Most accidents that involve product operation, maintenance and repair are caused by failure to
observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially
hazardous situations before an accident occurs. A person must be alert to potential hazards. This
person should also have the necessary training, skills and tools to perform these functions properly.
Improper operation, lubrication, maintenance or repair of this product can be dangerous and
could result in injury or death.
Do not operate or perform any lubrication, maintenance or repair on this product, until you have
read and understood the operation, lubrication, maintenance and repair information.
Safety precautions and warnings are provided in this manual and on the product. If these hazard
warnings are not heeded, bodily injury or death could occur to you or to other persons.
The hazards are identified by the “Safety Alert Symbol” and followed by a “Signal Word” such as
“DANGER”, “WARNING” or “CAUTION”. The Safety Alert “WARNING” label is shown below.
The meaning of this safety alert symbol is as follows:
Attention! Become Alert! Your Safety is Involved.
The message that appears under the warning explains the hazard and can be either written or
pictorially presented.
Operations that may cause product damage are identified by “NOTICE” labels on the product and in
this publication.
Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The
warnings in this publication and on the product are, therefore, not all inclusive. If a tool, procedure,
work method or operating technique that is not specifically recommended by Caterpillar is used,
you must satisfy yourself that it is safe for you and for others. You should also ensure that the
product will not be damaged or be made unsafe by the operation, lubrication, maintenance or
repair procedures that you choose.
The information, specifications, and illustrations in this publication are on the basis of information that
was available at the time that the publication was written. The specifications, torques, pressures,
measurements, adjustments, illustrations, and other items can change at any time. These changes can
affect the service that is given to the product. Obtain the complete and most current information before
you start any job. Caterpillar dealers have the most current information available. For a list of the most
current publication form numbers available, see the Service Manual Contents Microfiche, REG1139F.
When replacement parts are required for this
product Caterpillar recommends using Caterpil-
lar replacement parts or parts with equivalent
specifications including, but not limited to, phys-
ical dimensions, type, strength and material.
Failure to heed this warning can lead to prema-
ture failures, product damage, personal injury or
death.

3
Table of Contents
Table of Contents
Foreword ................................................................. 4
Safety Section
Safety Signs and Labels ......................................... 6
General Hazard Information ................................... 7
Burn Prevention ...................................................... 9
Fire Prevention and Explosion Prevention ............ 10
Crushing Prevention and Cutting Prevention ........ 12
Mounting and Dismounting ................................... 12
Before Starting Engine .......................................... 12
Engine Starting ..................................................... 12
Engine Stopping ................................................... 13
Electrical System .................................................. 13
Product Information Section
Model Views ......................................................... 15
Product Identification Information ........................ 18
Operation Section
Engine Lifting and Storage ................................... 21
Gauges and Indicators .......................................... 23
Engine Features and Controls .............................. 24
Engine Starting ..................................................... 25
Engine Operation .................................................. 29
Engine Stopping ................................................... 31
Cold Weather Operation ....................................... 33
Maintenance Section
Torque Specifications ............................................ 35
Lubricant Specifications ........................................ 38
Fuel Specifications ................................................ 45
Cooling System Specifications ............................. 47
Refill Capacities .................................................... 59
Maintenance Interval Schedule ............................ 61
Reference Information Section
Engine Ratings ..................................................... 92
Customer Service ................................................. 93
Reference Materials .............................................. 95
Index Section
Index ..................................................................... 99

4
Foreword
Foreword
Literature Information
This manual contains safety, operation instructions,
lubrication and maintenance information. This
manual should be stored in or near the engine area
in a literature holder or literature storage area. Read,
study and keep it with the literature and engine
information.
English is the primary language for all Caterpillar
publications. The English used facilitates translation
and consistency in electronic media delivery.
Some photographs or illustrations in this manual
show details or attachments that may be different
from your engine. Guards and covers may have
been removed for illustrative purposes. Continuing
improvement and advancement of product design
may have caused changes to your engine which are
not included in this manual. Whenever a question
arises regarding your engine, or this manual, please
consult with your Caterpillar dealer for the latest
available information.
Safety
This safety section lists basic safety precautions.
In addition, this section identifies hazardous,
warning situations. Read and understand the basic
precautions listed in the safety section before
operating or performing lubrication, maintenance
and repair on this product.
Operation
Operating techniques outlined in this manual are
basic. They assist with developing the skills and
techniques required to operate the engine more
efficiently and economically. Skill and techniques
develop as the operator gains knowledge of the
engine and its capabilities.
The operation section is a reference for operators.
Photographs and illustrations guide the operator
through procedures of inspecting, starting,
operating and stopping the engine. This section
also includes a discussion of electronic diagnostic
information.
Maintenance
The maintenance section is a guide to engine
care. The illustrated, step-by-step instructions are
grouped by fuel consumption, service hours and/or
calendar time maintenance intervals. Items in the
maintenance schedule are referenced to detailed
instructions that follow.
Use fuel consumption or service hours to determine
intervals. Calendar intervals shown (daily, annually,
etc.) may be used instead of service meter intervals
if they provide more convenient schedules and
approximate the indicated service meter reading.
Recommended service should be performed
at the appropriate intervals as indicated in
the Maintenance Interval Schedule. The actual
operating environment of the engine also governs
the Maintenance Interval Schedule. Therefore,
under extremely severe, dusty, wet or freezing cold
operating conditions, more frequent lubrication and
maintenance than is specified in the Maintenance
Interval Schedule may be necessary.
The maintenance schedule items are organized
for a preventive maintenance management
program. If the preventive maintenance program
is followed, a periodic tune-up is not required.
The implementation of a preventive maintenance
management program should minimize operating
costs through cost avoidances resulting from
reductions in unscheduled downtime and failures.
Maintenance Intervals
Perform maintenance on items at multiples
of the original requirement. Each level and/or
individual items in each level should be shifted
ahead or back depending upon your specific
maintenance practices, operation and application.
We recommend that the maintenance schedules
be reproduced and displayed near the engine as
a convenient reminder. We also recommend that a
maintenance record be maintained as part of the
engine’s permanent record.
See the section in the Operation and Maintenance
Manual, “Maintenance Records” for information
regarding documents that are generally accepted
as proof of maintenance or repair. Your authorized
Caterpillar dealer can assist you in adjusting your
maintenance schedule to meet the needs of your
operating environment.
Overhaul
Major engine overhaul details are not covered in the
Operation and Maintenance Manual except for the
interval and the maintenance items in that interval.
Major repairs are best left to trained personnel or
an authorized Caterpillar dealer. Your Caterpillar
dealer offers a variety of options regarding overhaul
programs. If you experience a major engine failure,
there are also numerous after failure overhaul
options available from your Caterpillar dealer.
Consult with your dealer for information regarding
these options.

5
Foreword
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.
Battery posts, terminals and related accessories
contain lead and lead compounds. Wash hands
after handling.

6
Safety Section
Safety Signs and Labels
Safety Section
i01150386
Safety Signs and Labels
SMCS Code: 1000; 7405
There may be several specific warning signs on
an engine. The exact location of the hazards and
the description of the hazards are reviewed in this
section. Please become familiar with all warning
signs.
Ensure that all of the warning signs are legible.
Clean the warning signs or replace the warning
signs if the words cannot be read or if the pictures
are not visible. When the warning signs are
cleaned, use a cloth, water, and soap. Do not use
solvent, gasoline, or other harsh chemicals to clean
the warning signs. Solvents, gasoline, or harsh
chemicals could loosen the adhesive that secures
the warning signs. The warning signs that are
loosened could drop off of the engine.
Replace any damaged warning signs or missing
warning signs. If a warning sign is attached to a part
of the engine that is replaced, install a new warning
sign on the replacement part. Any Caterpillar dealer
can provide new warning signs.
Do not work on the engine and do not operate the
engine unless the instructions and warnings in the
Operation and Maintenance Manual are understood.
Proper care is your responsibility. Failure to follow
the instructions or failure to heed the warnings
could result in injury or in death.
The warning labels that may be found on the engine
are illustrated and described.
Starting Aid
g00283558
Illustration 1
The warning label for the starting aid is located on
the valve cover.
g00283559
If the engine is equipped with an air inlet heater
for cold weather starting, do not use starting aids
that contain an aerosol such as ether. Using such
types of starting aids could result in an explosion
and personal injury.

7
Safety Section
General Hazard Information
Clutch
g00107406
Illustration 2
The warning label for the clutch is located on the
clutch housing (if equipped).
g00107407
Rotating gears can cause entanglement of fingers
or entanglement of hands. Do not service this
component without first reading the operator
manual.
i01377208
General Hazard Information
SMCS Code: 1000; 7405
g00104545
Illustration 3
Attach a “Do Not Operate” warning tag or a similar
warning tag to the start switch or to the controls
before the engine is serviced or before the engine
is repaired. These warning tags (Special Instruction,
SEHS7332) are available from your Caterpillar
dealer. Attach the warning tags to the engine
and to each operator control station. When it is
appropriate, disconnect the starting controls.
Do not allow unauthorized personnel on the engine,
or around the engine when the engine is being
serviced.
Engine exhaust contains products of combustion
which may be harmful to your health. Always
start the engine and operate the engine in a well
ventilated area. If the engine is in an enclosed area,
vent the engine exhaust to the outside.
Cautiously remove the following parts. To help
prevent spraying or splashing of pressurized fluids,
hold a rag over the part that is being removed.
•
Filler caps
•
Grease fittings
•
Pressure taps
•
Breathers
•
Drain plugs
Use caution when cover plates are removed.
Gradually loosen, but do not remove the last two
bolts or nuts that are located at opposite ends of
the cover plate or the device. Before removing the
last two bolts or nuts, pry the cover loose in order
to relieve any spring pressure or other pressure.

8
Safety Section
General Hazard Information
g00702020
Illustration 4
•
Wear a hard hat, protective glasses, and other
protective equipment, as required.
•
When work is performed around an engine that
is operating, wear protective devices for ears in
order to help prevent damage to hearing.
•
Do not wear loose clothing or jewelry that can
snag on controls or on other parts of the engine.
•
Ensure that all protective guards and all covers
are secured in place on the engine.
•
Never put maintenance fluids into glass
containers. Glass containers can break.
•
Use all cleaning solutions with care.
•
Report all necessary repairs.
Unless other instructions are provided, perform
the maintenance under the following conditions:
•
The engine is stopped. Ensure that the engine
cannot be started.
•
Disconnect the batteries when maintenance
is performed or when the electrical system is
serviced. Disconnect the battery ground leads.
Tape the leads in order to help prevent sparks.
•
Do not attempt any repairs that are not
understood. Use the proper tools. Replace
any equipment that is damaged or repair the
equipment.
Pressure Air and Water
Pressurized air and/or water can cause debris
and/or hot water to be blown out. This could result
in personal injury.
When pressure air and/or pressure water is used
for cleaning, wear protective clothing, protective
shoes, and eye protection. Eye protection includes
goggles or a protective face shield.
The maximum air pressure for cleaning purposes
must be below 205 kPa (30 psi). The maximum
water pressure for cleaning purposes must be
below 275 kPa (40 psi).
Fluid Penetration
g00687600
Illustration 5
Always use a board or cardboard when you check
for a leak. Leaking fluid that is under pressure can
penetrate body tissue. Fluid penetration can cause
serious injury and possible death. A pin hole leak
can cause severe injury. If fluid is injected into your
skin, you must get treatment immediately. Seek
treatment from a doctor that is familiar with this type
of injury.
Containing Fluid Spillage
Care must be taken in order to ensure that fluids
are contained during performance of inspection,
maintenance, testing, adjusting and repair of the
engine. Prepare to collect the fluid with suitable
containers before opening any compartment or
disassembling any component containing fluids.
Refer to Special Publication, NENG2500, “Tools and
Shop Products Guide” for the following items:
•
Tools that are suitable for collecting fluids and
equipment that is suitable for collecting fluids
•
Tools that are suitable for containing fluids and
equipment that is suitable for containing fluids
Obey all local regulations for the disposal of liquids.

9
Safety Section
Burn Prevention
Asbestos Information
g00702022
Illustration 6
Caterpillar equipment and replacement parts that
are shipped from Caterpillar are asbestos free.
Caterpillar recommends the use of only genuine
Caterpillar replacement parts. Use the following
guidelines when you handle any replacement parts
that contain asbestos or when you handle asbestos
debris.
Use caution. Avoid inhaling dust that might be
generated when you handle components that
contain asbestos fibers. Inhaling this dust can
be hazardous to your health. The components
that may contain asbestos fibers are brake pads,
brake bands, lining material, clutch plates, and
some gaskets. The asbestos that is used in these
components is usually bound in a resin or sealed in
some way. Normal handling is not hazardous unless
airborne dust that contains asbestos is generated.
If dust that may contain asbestos is present, there
are several guidelines that should be followed:
•
Never use compressed air for cleaning.
•
Avoid brushing materials that contain asbestos.
•
Avoid grinding materials that contain asbestos.
•
Use a wet method in order to clean up asbestos
materials.
• A vacuum cleaner that is equipped with a high
efficiency particulate air filter (HEPA) can also be
used.
•
Use exhaust ventilation on permanent machining
jobs.
•
Wear an approved respirator if there is no other
way to control the dust.
•
Comply with applicable rules and regulations
for the work place. In the United States, use
Occupational Safety and Health Administration
(OSHA) requirements. These OSHA requirements
can be found in “29 CFR 1910.1001”.
•
Obey environmental regulations for the disposal
of asbestos.
•
Stay away from areas that might have asbestos
particles in the air.
Dispose of Waste Properly
g00706404
Illustration 7
Improperly disposing of waste can threaten the
environment. Potentially harmful fluids should be
disposed of according to local regulations.
Always use leakproof containers when you drain
fluids. Do not pour waste onto the ground, down a
drain, or into any source of water.
i01480768
Burn Prevention
SMCS Code: 1000; 7405
Do not touch any part of an operating engine.
Allow the engine to cool before any maintenance
is performed on the engine. Relieve all pressure
in the air system, in the hydraulic system, in the
lubrication system, in the fuel system, or in the
cooling system before any lines, fittings or related
items are disconnected.
Coolant
When the engine is at operating temperature, the
engine coolant is hot. The coolant is also under
pressure. The radiator and all lines to the heaters or
to the engine contain hot coolant.

10
Safety Section
Fire Prevention and Explosion Prevention
Any contact with hot coolant or with steam
can cause severe burns. Allow cooling system
components to cool before the cooling system is
drained.
Check the coolant level after the engine has
stopped and the engine has been allowed to cool.
Ensure that the filler cap is cool before removing
the filler cap. The filler cap must be cool enough
to touch with a bare hand. Remove the filler cap
slowly in order to relieve pressure.
Cooling system conditioner contains alkali. Alkali
can cause personal injury. Do not allow alkali to
contact the skin, the eyes, or the mouth.
Oils
Hot oil and hot lubricating components can cause
personal injury. Do not allow hot oil to contact the
skin. Also, do not allow hot components to contact
the skin.
Batteries
Electrolyte is an acid. Electrolyte can cause
personal injury. Do not allow electrolyte to contact
the skin or the eyes. Always wear protective glasses
for servicing batteries. Wash hands after touching
the batteries and connectors. Use of gloves is
recommended.
i01372258
Fire Prevention and Explosion
Prevention
SMCS Code: 1000; 7405
g00704000
Illustration 8
All fuels, most lubricants, and some coolant mixtures
are flammable.
Flammable fluids that are leaking or spilled onto hot
surfaces or onto electrical components can cause
a fire. Fire may cause personal injury and property
damage.
A flash fire may result if the covers for the engine
crankcase are removed within fifteen minutes after
an emergency shutdown.
Determine whether the engine will be operated in
an environment that allows combustible gases to be
drawn into the air inlet system. These gases could
cause the engine to overspeed. Personal injury,
property damage, or engine damage could result.
If the application involves the presence of
combustible gases, consult your Caterpillar dealer
for additional information about suitable protection
devices.
Remove all flammable materials such as fuel, oil,
and debris from the engine. Do not allow any
flammable materials to accumulate on the engine.
Store fuels and lubricants in properly marked
containers away from unauthorized persons. Store
oily rags and any flammable materials in protective
containers. Do not smoke in areas that are used for
storing flammable materials.
Do not expose the engine to any flame.
Exhaust shields (if equipped) protect hot exhaust
components from oil or fuel spray in case of a line,
a hose, or a seal failure. Exhaust shields must be
installed correctly.
Do not weld on lines or tanks that contain flammable
fluids. Do not flame cut lines that contain flammable
fluid. Clean any such lines thoroughly with a
nonflammable solvent prior to welding or flame
cutting.
Wiring must be kept in good condition. All electrical
wires must be properly routed and securely
attached. Check all electrical wires daily. Repair any
wires that are loose or frayed before you operate
the engine. Clean all electrical connections and
tighten all electrical connections.
Eliminate all wiring that is unattached or
unnecessary. Do not use any wires or cables that
are smaller than the recommended gauge. Do not
bypass any fuses and/or circuit breakers.
Arcing or sparking could cause a fire. Secure
connections, recommended wiring, and properly
maintained battery cables will help to prevent arcing
or sparking.
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The Cat 3054 and 3056 operation and maintenance manual consists of 104 pages and covers engines with serial numbers 4ZK1-Up, 6FK1-Up, 7AK1-Up, 1ML1-Up, 5YS1-Up, 7MS1-Up, 2PW1-Up, and 3GW1-Up. This manual is essential for understanding the operation and maintenance of the engine, providing crucial information for both professional mechanics and DIY enthusiasts. It includes instructions for correct periodical inspections and maintenance, and it is recommended to always have this manual present with the machine.