Download - Caterpillar 973C
-
8/14/2019 Caterpillar 973C
1/24
Engine
Engine Model Cat C9
Net Flywheel Power 178 kW 239 hp
Cat C9 engine with ACERT Technology to meetEPA Tier 3 and EU Stage IIIA emissions.
Buckets
Capacity General Purpose 3.2 m3 4.19 yd3
Capacity Multi-Purpose 2.9 m3 3.79 yd3
Bucket capacities are with long bolt-on teethand segments.
Weights
Operating Weight 26 373 kg 58,142 lb
Operating Weight: Includes coolant, lubricants, 100% fueltank, ROPS/FOPS cab, General Purpose Bucket with longbolt-on teeth and segments and 75 kg (165 lb) operator.
973CTrack Loader
-
8/14/2019 Caterpillar 973C
2/242
973C Track LoaderLeading edge design, state-of-the-art technology and unmatched versatility in one machine
allows maximum productivity.
Top Performance.
A machine designed to be productive over
a wide range of tough applications from
heavy clearing to high-volume truck loading,
from the slag pits of steel mills to big city
landfills. The 973C not only can master the
toughest excavation but can also finish grade
with delicate precision.
Reliable, durable, rugged construction, self-
diagnosis of electrical and power train systems,
and easy maintenance help ensure extended
service life.
Special Application Arrangements
Special arrangements Waste Handling/
Demolition, Steel Mill, Wide Gauge and
more, are available or can be designed
on request to allow the 973C to workin the toughest conditions. pg. 14
Undercarriage
Improved traction, increased machine
stability and reduced frame impact
are benefits of the Cat oscillating
undercarriage. The Cat sealed andlubricated track reduces pin and internal
bushing wear, reduces component
friction and track noise, extending
track life. pg. 12
Caterpillar Monitoring System (CMS)
The Caterpillar Monitoring System
with flashable memory, monitors the
hydrostatic and electrical systems and
provides the operator instant feedback
on the machine conditions. pg. 7
Hydrostatic Drive
The hydrostatic drive with electronic
control provides precise modulation for
quick, smooth operation and superior
maneuverability. Shorter cycle times,
high efficiency, and excellent
maneuverability result in increased
productivity. pg. 6
Engine
The new Cat C9 ATAAC diesel engine
retains the reliability, durability and
performance of its predecessor, while
adding the benefits of Caterpillar
ACERT Technology for compliance
with the stringent Tier 3/Stage IIIA
emission standards. pg. 4
-
8/14/2019 Caterpillar 973C
3/24
New Feature
3
Total Customer Support
Your Caterpillar dealer offers a wide
range of services which can be set up
with a Customer Support Agreement.
A customized plan, from PM serviceto total machine maintenance, with
flexible financing, allows for optimal
return on investment. pg. 16
Serviceability
The 973C design offers reduced
maintenance, convenient access to
components, easy diagnostic capabilities,
as well as easy and economical componentreplacement possibilities. Cat dealers also
provide quick parts availability. pg. 15
Work Tools
A large choice of buckets, Ground
Engaging Tools (GET), and attachments,
allow configuration of the 973C for
maximum performance in virtually
any job. pg. 11
Structure
The box-section mainframe is designed
specifically for the work of the track
loader. It provides durability, resistance
to twisting and a solid base for all
components. The dual Z-bar linkage
offers increased breakout force and fast
dump speed for enhanced productivity.
pg. 10
Operator Station
The C-Series Track Loader is designed
for operator comfort, convenience, and
productivity. Sound suppressed ROPS
cab, heating and air conditioning, an
adjustable air-suspension seat with side-
to-side isolator, and pilot hydraulic
implement controls help reduce
operator fatigue. pg. 8
-
8/14/2019 Caterpillar 973C
4/24
C9 Diesel Engine. The Cat C9 is an8.8 liter (537 in3) displacement, six-
cylinder, in-line configured engine with
hydraulically actuated electronic fuel
injection. It uses ACERT Technology,
a series of Caterpillar engineered
innovations that provide advanced
electronic control, precision fuel delivery
and refined air management, resulting
in outstanding performance and lower
emissions.
The Cat C9 with ACERT Technology
meets the U.S. EPA Tier 3 and European
Union Stage IIIA emissions standards,
which dramatically restrict the emission
of nitrogen oxide and other pollutants in
an effort to improve worldwide air quality.
The C9 rating is 178 net kW (239 net hp)
at 1,800 rpm.
Design. The C9 with ACERT Technologyis based on the proven Cat C-9 Tier 2/
Stage II engine with thousands currently
in operation. It offers a compact design
with big, heavy-duty engine features for
outstanding durability, reliability and
performance. The cylinder head features
a new cross-flow air design with four
valves per cylinder and updated port
geometry. The improved intake port
geometry provides smoother transitions
and less flow restrictions. The C9 uses
mid-support wet cylinder liners, which are
easily removed for service. A two-step
honing process is used for cutting deep
grooves for oil retention.
ADEM A4. The ADEM A4 electroniccontroller is the brain of the engine and
contains the engines control software.
All the sensors are remote-mounted andconnected to the main module.
The main concept behind ACERT
is advanced combustion. ACERT
technology begins with ADEM A4.
This electronic brain regulates fuel
delivery, airflow and other engine
functions. The controller directs the
HEUI injectors to deliver multiple
injections of fuel during the engines
compression stroke.
The C9 features ADEM A4, the most
advanced 32-bit Electronic EngineControl available. ADEM A4 offers
greater processing speeds and memory
than ADEM III. It offers a variety of
fuel maps to optimize ACERT technology
for better performance and efficiency.
Fuel System. Hydraulically actuatedelectronic fuel injection is a Cat exclusive
technology and has a proven track record.
The HEUI design has been refined and
now supplies multiple injections of fuel
during the engines compression stroke.
With multiple injection, fuel is introducedto the combustion chamber in a number
of controlled microbursts, rather than all
at once, so it precisely regulates the
combustion cycle. The improved HEUI
design also offers improved combustion
and fuel delivery. An added benefit of
this is better control of engine sound
and vibration levels.The HEUI system
continues to offer excellent reliability
because it has fewer moving parts than
mechanical unit injection and requires
very few adjustments, reducing
maintenance costs and increasingmachine availability.
Design. The fuel system design eliminatesexternal high-pressure fuel lines, providing
efficient, precise fuel delivery, and timing.
4
Provides power, reliability and acts as a working counterweight in the rear of the machine,
for optimum balance.
Engine
-
8/14/2019 Caterpillar 973C
5/24
Serviceability. Unit injectors can beserviced individually, without the need
to service the whole fuel system.
Turbocharger and Aftercooler.The turbocharger is a wastegate design
with a new titanium compressor wheel.
The titanium wheel is better able to
withstand the stress and wear of high-
speed operation. This new turbocharger is
well-matched to the air-to-air aftercooler
resulting in high power. The exhaust
driven turbocharger packs more air into
the cylinders, while the air-to-air
aftercooler cools the pressurized air from
the turbocharger, making the engine
intake air denser. The increased air in
the cylinders results in more power,
improved combustion, and reduced
exhaust emissions.
Cooling System. Incorporated into asingle-plane cooling unit are the engine
radiator, the hydraulic and power train
oil coolers, and the air-to-air aftercooler.
Wide fin spacing for Trash Resistance
and swing-out latched grille for easy
cleaning are now standard equipment.
Extended Life Design. The forged steelcrankshaft increases strength and
durability. It features induction hardened
journals and fillets. The camshaft is madeof carburized and heat-treated steel for
excellent durability. The pistons feature an
articulated two-piece design. The forged
steel crown is stronger than aluminum and
allows more flexibility in the ring position.
Starting System. The ADEM A4controller controls the electric
starter motor and the starter relay.
The ADEM A4 prevents fuel from being
supplied for starting until sufficient oil
pressure is present. This prevents wear
on the bearings due to operating withou
adequate lubrication.
Engine Installation. The engine isinstalled using rubber mounts to reduce
the transfer of engine vibration to the
frame and cab, lowering operator
vibration, sound levels, and fatigue.
Rear Engine Location. Rear enginelocation allows excellent forward
visibility, while serving as a working
counterweight. Helps reduce radiator
plugging while providing easy service
access to the engine and other majorcomponents.
5
-
8/14/2019 Caterpillar 973C
6/24
Shifting. The hydrostatic drive eliminatesthe need for transmission shifting, which
allows the operator to concentrate on
working, maneuvering, and production.
Machine Speed. The ElectronicHydrostatic Control (EHC) automatically
adjusts machine speed to give the
equipment hydraulic system priority,
while the hydrostatic system takes
advantage of all remaining engine power.
Electronic Hydrostatic Control (EHC).The EHC maintains engine rpm in
optimum operating range and balances
the two track drive systems for straight
travel without machine drift.
Caterpillar Monitoring System (CMS).The EHC interfaces with the CMS for
system diagnostics and calibrations. It is
self diagnosing, and fully compatible with
Electronic Technician (Cat ET) software.
This allows quick and easy calibrationsand troubleshooting.
Pumps and Drive Motors.Variable displacement pumps and
variable displacement drive motors are
electronically controlled by the EHC,offering high efficiency and precise travel.
Each track is independently driven by a
separate hydraulic circuit consisting of one
variable displacement pump, connected
by Cat XT-6 hydraulic hose and
couplings to a variable displacement
piston motor.
Separate Hydraulic Pumps. Separatehydraulic pumps offer easy servicing.
Maneuverability. Independent power isprovided to each track, which provides
great maneuverability, speed, and sideslope operation. Controlling independent
power and speed for each track allows
the operator to maintain full power to
both tracks while turning, achieving
a Power Turn. Power Turns allow
increased productivity when dozing
or backfilling. For additional
maneuverability, the operator can
use counter rotation, which allows
spot turns in tight locations.
Travel Speeds. Travel speeds are
infinitely variable between zero and topspeed. Two speed modes, travel mode
and work mode, provide two different
speed ranges to best match machine
speed and torque to the job conditions for
maximum productivity. Maximum travel
speed is increased to 10 kph (6.2 mph)
when the travel/work mode switch is
in the travel position. In addition, switch
between travel and work positions takes
effect immediately.
6
Hydrostatic DriveThe electronically controlled hydrostatic drive helps provide quick response for shorter cycle
times and increased productivity.
-
8/14/2019 Caterpillar 973C
7/24
Caterpillar Monitoring System Functions.The CMS offers three main functions.
1) Quick and simple calibration of the
hydrostatic drive system. 2) Preventionof damage by alerting the operator if a
machine fault has occurred. 3) Monitoring
of hydrostatic and electrical systems to
aid service personnel in troubleshooting
and repairs.
Gauge Cluster. The gauge cluster containsfour gauges, which monitor:
Engine coolant temperature
Power train oil temperature
Hydraulic tank oil temperature
Fuel level
Alert Indicators. The alert indicator clustergroups the individual alert indicators for:
Low fuel pressure
Low fuel
Charge filter bypass
High pump drive
Low hydrostatic system charge
pressure
Low engine oil pressure
Check engine detected by ADEM A4
Low/high alternator output
System warning for hydrostatic
drive system
Ether aid activated
Digital Message Display. The digitaldisplay can show the operators choice
of hour meter, engine rpm, odometer,
or service codes.
Service Mode. When in service mode,service codes from the EHC are shown on
the Digital Message Display. The service
code information is transferred via the
Cat Data Link from the EHC to the
main display module.
Three Level Warning System.CMS also functions as a warning
system with three levels of warning.
CMS Self Test. The CMS self-testverifies that the main display module
is operating properly every time the key
start switch is turned from the off to
theon position.
7
Caterpillar Monitoring System (CMS)The Caterpillar Monitoring System offers three main functions.
-
8/14/2019 Caterpillar 973C
8/248
Designed for operator comfort, convenience and ease of operation throughout the work day.
Operator Station
-
8/14/2019 Caterpillar 973C
9/24
1. Heating and Air Conditioning.The air circulation system delivers
filtered, pressurized, and temperature-
controlled air through 10 louvered vents.Air conditioning and heater are standard
equipment.
2. Cat Comfort Series Seat. The Caterpillarair-suspension seat, with side-to-side
isolator, is ergonomically designed and
fully adjustable for maximum operator
comfort and control. The backrest
conforms to the operators spinal curve.
The contoured base curves away from
lower back to reduce pressure.
Retractable seat belt is 76 mm (3 in)
wide for positive, comfortable restraint.
3. Storage Space. Storage spaces includea lockable storage box, a lunch box
compartment, beverage holder, and
coat hook.
4. Armrests. Adjustable armrests can bepositioned up or down. The right armrest
is adjustable forward and backward.
Each armrest can be inclined to different
angles for excellent operator comfort
and control.
5. Dashboard. The newly designed
smooth, rounded dashboard with integraldefroster vents, provides all the necessary
functions and instrumentation within
the operators normal line of sight.
6. Hydrostatic Drive System Controls.The hydrostatic drive system controls
allow quick speed and directional
changes from a single control lever formaximum maneuverability. Pedal steering
allows precise control of each track
independently, with on demand counter
rotation. The brake pedal supplements
dynamic hydraulic braking provided
by the hydrostatic drive system.
7. Speed Switches. The speed modeswitch allows the operator to choose
between work mode and travel mode
or maximum drive speed, to best match
the machine speed to various job
conditions. The electronic engine speed
selector switch is used by the operator
to set engine rpm.
8. Pilot Operated Controls. Pilot operatedimplement controls allow easier operation
and greater productivity. Choice of
single-lever pilot control (standard) or
two-lever (optional) is available for bucket
lift and dump. Adjustable automatic lift
and bucket position kickout allow the
operator to concentrate on positioning the
machine, resulting in higher productivity.
9. Viewing Area. The viewing areaincludes tinted glass to reduce glare and
provides excellent visibility to the bucket
tracks, and around the engine enclosureto the rear. Sunvisor, windshield wipers
and washers are all standard features on
the cab. The front wiper has variable
speed, intermittent control.
10. Rearview Mirror. The rear view mirroris located above the front windshield,
maximizing the operators visibility.
Adjustable Steering Pedals. The totaltravel of the steering pedals is 23 but
the angle can be adjusted from 35 to 50.
9
-
8/14/2019 Caterpillar 973C
10/24
Mainframe and Loader Tower.The mainframe and loader tower is a
single, welded fabrication with castings
and forgings incorporated at points of
high stress to distribute those stresses
over wide areas for a long structural life.
Design. Strong box-section mainframedesign, with continuous, deep-penetration
welds resist twisting loads to protect
components from excessive wear or
damage without adding extra weight tothe machine. The frame rails consist of
two box sections, which are joined at the
rear by a box-section cross member.
Mounting points for the final drives,
pivot shafts, and operators platform are
integrated into each mainframe side rail.
Four-Plate Loader Tower. The four-plateloader tower is integral with the basic
mainframe. The loader tower distributes
forces evenly from the lift arms to the
mainframe, which eliminates twisting
for maximum structural durability.
The loader tower provides solid
mounting points for lift arms, lift
cylinders, and Z-Bar tilt cylinders.
Castings. Steel castings (shown in red) are
used in areas of high stress concentration.Large radius curves dissipate stresses that
could cause fatigue and cracking.
Steel Frame. Fatigue resistant steel framesections along with castings provide
flexibility, durability and excellent
resistance to impact loads.
Durability. Structures are designed toprovide durability and extended service
life to support multiple rebuilds.
Straddle Mounting. Straddle mountingsupports all lift arm pivot points on both
ends of the pin eliminating twisting forces
and enhancing structural durability.
Z-Bar Linkage. Breakout force is
exceptionally high due to the mechanical
advantage of Z-bar linkage design, and
hydraulic pressure applied to the head
end of the tilt cylinders. Using dual tilt
cylinders and linkage provides the
operator a better view of the work
area, bucket, and cutting edge.
Sealed Loader Linkage. The 973C linkagehas fewer grease points compared to other
linkage designs because many pin joints
are sealed to keep dirt out. Fewer grease
points and sealed pins means less
downtime for maintenance allowing
more working hours between servicing.
Simultaneous Lift and Dump.Simultaneous lift and dump for fast truck
loading and smooth grading, and the
ability to meter material from bucket.
Lift Kickout. Adjustable automatic liftkickout and bucket positioner allow theoperator to concentrate on positioning
the machine rather than the bucket.
This results in greater productivity.
Lift Arms. The two arms are welded intoa single unit, using a weld-fabricated
cross-tube. The fabricated cross-tube
and tilt lever, use forgings at high stress
points to spread the loads for long life.
10
StructureThe box-section mainframe is designed to handle heavy loads, while the dual Z-Bar linkage
maximizes breakout force, while distributing stress loads to the mainframe.
-
8/14/2019 Caterpillar 973C
11/24
Versatility. The large variety of tasks anoperator can perform with the standard
machine and attachments has lead to the
Caterpillar track loaders reputation forversatility.
General Purpose Bucket. The GeneralPurpose (GP) bucket is designed for
excellent loadability and long life
in applications such as hard bank
excavating, stripping, and stockpile
loading. High-strength, low alloy
steel helps the bucket resist dents and
abrasions. Shell-tine reinforcements
support the rear of the bucket for
increased structural strength.
Multi-Purpose Bucket. The Multipurpose(MP) bucket is designed for a broad range
of applications, such as loading, stripping,
clearing, bulldozing, picking up debris,
and fine grading. The bucket clamps
hydraulically to grip logs or handle
other tough-to-grasp materials.
Extreme-Service Multi-Purpose Bucket.Offered as an attachment, the extreme-
service Multi-purpose bucket has the
same load capacity as the Multi-Purpose
bucket. The reinforced hinges, thickerside-plates, and reinforced spill-plate
are designed into the extreme-service
Multi-Purpose bucket for situations
where the stresses can exceed the design
objectives of the standard MP bucket.
Slag Bucket. The Slag bucket is speciallydesigned to meet the unique challenges
presented by slag handling applications.
Designed for continuous heavy-duty work
in hot slag, the thicker material absorbs
slag heat which virtually eliminates
bucket distortion.
Landfill Multi-Purpose Bucket.The Landfill Multi-Purpose (MP Landfill)
bucket combines the versatility of
a Multi-Purpose bucket with the
performance of a Landfill design.
Constructed with a trash-rack for
increased capacity, extra strength and
better load retention. Ideal for applicationsin the harsh refuse market, whether
digging or spreading material at the
landfill or grasping and loading refuse at
a transfer station. The clamping action
of the front section gives the bucket the
ability to load material, doze with the
straight side of the dozer, grab bulky
items with the clamp or control the
discharge of fill/cover material.
Ripper-Scarifier. The ripper-scarifieradds extra versatility to expand the
application of the machine. Hinged-type
with three shanks, beam mounted withtwo pins pressed into each side of the
mainframe. Raised and lowered with two
wide-mounted cylinders. Six-pin linkage
requires no lubrication.
Bucket Protection Options. Caterpillaroffers several types of adapters, tips, and
cutting edges, which increase bucket life
and maximize performance. (1) Bolt-on
adapters, tips, and bolt-on reversible edge
segments provide a clean working floor
and increase bucket capacity. Heavy-duty
segments are available with 62 percent
more wear material than standard
segments. (2) Bolt-on, 2-strap adapters,
and tips, including corner adapters, offer
excellent penetration. (3) Bolt-on,
reversible, cutting edges are ideal when
penetration is not a consideration, such as
in clean work or stockpiling applications
(4) Weld-on, top-strap adapters are also
available with a GP bucket. They are
flush-mounted with the bottom of the
cutting edge to provide a smooth bucket
bottom and unrutted work surface.
These adapters can be used with anyof the tip options (not with a bolt-on
protection system).
Tip Options. Caterpillar GET offers avariety of tips to better accommodate
your needs in any working environment,
whether that is high impact or general-
purpose applications.
K Series Tooth System. The newK Series tooth system matches customer
requirements of longer life, improved
performance, greater reliability and ease
of removal and installation.
11
Work ToolsA variety of attachments and Ground Engaging Tools (GET) are available to maximize
performance in any application.
-
8/14/2019 Caterpillar 973C
12/24
Undercarriage. The oscillating track rollerframe design decreases ground induced
impact loads to the machine, increases
machine stability on rough terrain, and
provides a smoother, more comfortable
ride for the operator.
Pivot Shaft. Steel pivot shafts attach therear ends of the track roller frames to the
loader mainframe and carry most of the
weight. The pivot shafts transfer ground
induced shock loads from the track rollerframes to the loader mainframe rather
than through the final drives. The result
is longer final drive life.
Equalizer Bar. The equalizer bar is pinnedin its center to the machine mainframe
and at the ends to each track roller frame.
This allows the forward ends of the track
roller frames to oscillate, or move
vertically, to keep more track on the
ground in uneven underfoot conditions.
The equalizer bar also provides a more
stable work platform for the operator,
who will be comfortable working at
faster speeds for increased productivity.
Track Roller Frame. The track rollerframes are a welded, box section design,
similar to the box section design of the
mainframe and loader tower, which
provides strength and resistance to
bending without adding extra weight.
Track and Carrier Rollers. Seven trackrollers spread the machine weight over
a larger area. This improves stability and
provides a more comfortable ride for theoperator. Two upper carrier rollers on each
side mount to the machine mainframe.
This mounting arrangement helps resist
mud packing of the undercarriage.
Track Adjuster. The track adjuster andmechanical recoil system uses a large
recoil spring and grease filled adjustment
cylinder, which allows the idler to move
forward and back to maintain proper track
tension as it absorbs undercarriage
shock loads.
Swing-Link Idler. Permits horizontal idlermovement, absorbing shock loads and
maintaining proper track tension, while
eliminating the need for shims and wear
strips. The removal of wear strips
eliminates a point of service and
maintenance. Cat idlers provide
superior structural support.
Sealed and Lubricated Track. Sealed andlubricated track keeps maintenance costs
down by reducing pin and internal bushing
wear, which can extend the life of the
track and the undercarriage components.
Lubricating the pin helps reduce
component friction for less track noise
and greater power train efficiency.
12
Keeps more track on the ground for maximum traction and stability. Several shoe options
provide best match to job conditions.
Undercarriage
-
8/14/2019 Caterpillar 973C
13/24
Track Links. The standard track links are
the newest generation of Extended Wear
Life (EWL) track. Included is more wear
material for longer track life. A two-piece,
split master link allows easy trackremoval and installation.
Sprockets. The Tough Steel sprocketsegments extend sprocket segment life.
The five segments are bolted onto each
final drive sprocket hub. Segments can
be removed or replaced without breaking
the track. Driven by every second sprocket
tooth, the track chain makes two complete
revolutions before each tooth contacts a
bushing once. The result is long, even
wear of the sprocket teeth.
Shoe Options. There are several shoe
options to choose from with the Caterpillar
oscillating undercarriage. Wide, double
grouser is now standard. Consult your
Caterpillar dealer for more information.
1. Double Grouser Shoes. The standarddouble grouser shoes are designed for
good traction, easy turns, and reduced
bending.
2. Trapezoidal Center Hole Shoes.
Trapezoidal center hole shoes let the
sprocket push out dirt and debris, to
reduce packing between the shoe and
the bushing.
3. Single Grouser Shoes. Single grousershoes increase penetration and traction
in lower impact and lower abrasion
conditions.4. Chopper Shoes. Chopper shoes aresingle grouser shoes with trapezoidal
center hole and additional diagonal side
grousers for increased chopping ability.
Recommended for landfills, transfer
stations and demolition applications.
Extreme Service Shoes. Extreme serviceshoes are available with more hardened
wear material for longer wear life and
higher impact applications.
Wider Shoes. Wider shoes are alsoavailable to reduce ground pressure
in soft underfoot conditions.
13
-
8/14/2019 Caterpillar 973C
14/24
Waste Handling/Demolition
Arrangements. Waste Handling/Demolition arrangements provide added
versatility and are designed to make the
973C perform well in sanitary landfills,
waste handling or demolition applications
where the machine spreads, compacts,sorts, shreds and crushes materials.
Steel Mill Arrangement. Steel mill
arrangements allow the 973C to play
a key role in the mills production.
The compact stature and maneuverability
of the 973C is well suited for working
and traveling in a mill. Special guarding
for the operator, machine, and hydraulicsare added. Equipped with a Steel Mill/
Slag bucket it has the durability and
breakout force to handle the hot slag.
Wide Gauge Arrangement. The WideGauge 973C is designed for work in very
soft underfoot conditions. For enhanced
flotation and stability, the track gaugehas been widened and wider track shoes
installed. The larger track shoes increase
the ground contact area for reduced
ground pressure.
Additional Arrangements. Many otherarrangements are available. For other
custom-designed arrangements for
specific applications, contact your
Caterpillar Dealer.
14
Special Application ArrangementsSpecial arrangements are available, or can be designed on request, to allow the 973C to
work in special applications.
-
8/14/2019 Caterpillar 973C
15/24
Reduced Maintenance. The 973C has
many service features incorporated in
the machine including:
Caterpillar Extended Life Coolant
for extended change intervals.
Sealed electrical connectors lockout dust and moisture.
Caterpillar XT hydraulic hose, in
medium and high-pressure circuits,
provide high abrasion resistance and
far exceed industry standards.
O-Ring Face Seals (ORFS) hydraulic
couplings help eliminate fluid leaks,
provide positive seals, and are
reusable for lower operating costs.
Removable floor panels in the cab
to access the engine, and hystat and
implement pumps.
Extended change intervals for engine
and hydraulic/hystat oil.
Scheduled Oil Sampling Fluids
Analysis helps avoid unnecessary
downtime.
Fluid taps make oil sampling easier.
Service Intervals. The time betweenfluid and filter service intervals has
been significantly increased, minimizing
downtime and maximizing productivityfor the 973C.
Easy Component Access. The rear enginedesign and large engine access doors make
it easy to reach the engine, electrical
components, hydrostatic system, and
batteries. Hydraulic and fuel filters are
located close to each other. Removable
cab floor panels create easy access to
internal components. The hydrostatic
drive system features separate pumps and
motors for low replacement or rebuild
cost. All lubrication points are accessible
from ground level. The swing-out latched
grille, now standard, reduces downtime
and the cost for cleaning, inspection,and repair of the cooling package.
Charge and Case Drain Filters.
Two spin-on, hydraulic oil filters for
the hydrostatic drive system, are located
inside the right access door for ease
of access.
Water Seperator and Fuel Filter.
The water separator and fuel filter are
located inside the rear right access door
for ease of access and serviceability.
Product Link. This option allows the
customer or dealer to obtain machine
diagnostics and location from their
offices. Product Link provides updates
on service meter hours, machine
condition, machine location, and
integrated mapping/route planning.
Easy Diagnosis. The CaterpillarMonitoring System and self-diagnosing
Electronic Hydraulic Control (EHC) work
together to warn against both occurring
and impending faults to reduce downtime
The electrical wiring is color-coded and
numbered for easy diagnosis and repair.
Serviceability. Centralized drainingpoint for splitter box, engine and power
train allow to even more improved
serviceability of the 973C.
15
ServiceabilitySimplified service and extended service intervals means more productive uptime.
-
8/14/2019 Caterpillar 973C
16/24
Product Support. Your Cat Dealer offersa wide range of services which can be set
up with a Customer Support Agreement.
The dealer can customize a plan for you,
from PM service to total machine
maintenance, allowing you to optimize
your return on investment.
Remanufactured Components.Save money with remanufactured parts.
They offer the same warranty and
reliability as new products at a cost
savings of 40 to 70 percent.
Replacement. Repair, rebuild, or replace?
Your Cat Dealer can help evaluate the
cost involved so you can make the
right choice.
Service Capability. Whether in thedealers fully equipped shop or in the field,
you will get trained service technicians
using the latest technology and tools.Selection. Make detailed comparisons ofthe machines you are considering before
you buy. How long do components
last? What is the cost of preventive
maintenance? What is the true cost of
lost production? Your Cat Dealer can
give you answers to these questions.
Purchase. Consider the financing optionsavailable as well as day-to-day operating
costs. This is also the time to look at
dealer services which can be included
in the cost of the machine to yield lowerequipment owning and operating costs
over the long run.
Maintenance. More and more equipment
buyers are planning for effective
maintenance before buying equipment.
Choose from your dealers wide range
of maintenance services at the time of
your purchase. Repair option programs
guarantee the cost of repairs up front.
Diagnostic programs such as Scheduled
Oil Sampling and Technical Analysis
help avoid unscheduled repairs.Operation. Improving operatingtechniques can boost your profits.
Your Cat Dealer has training videotapes,
literature, and other ideas to help you
increase productivity.
16
Total Customer SupportYour Caterpillar dealer offers a wide range of services which can be set up with a Customer
Support Agreement. A customized plan, from PM service to total machine maintenance, with
flexible financing, allows for optimal return on investment.
-
8/14/2019 Caterpillar 973C
17/2417973C Track Loader specifications
Drive System
Type Hydrostatic drive with infinite
machine speeds up to 10 km/h
(6.2 mph)
Drive Pump Two, variable-displacement,
slipper-type axial piston pumps
Track Motor Two, variable-displacement,
bent axis piston motors
Relief Valve Setting 44 000 kPa 6,380 psi
Hydraulic System Equipment
Type Vane
Output 335 L/min 88.5 gal/min
Main Relief Valve Setting 19 000 kPa 2,755 psi
Lift Cylinders Bore 165 mm 6.5 in
Lift Cylinders Stroke 935 mm 36.8 in
Tilt Cylinders Bore 140 mm 5.5 in
Tilt Cylinders Stroke 633 mm 24.9 in
Hydraulic System Pilot
Output Maximum 12 L/min 3.2 gal/min
Relief Valve Setting 2400 kPa 348 psi
Cycle Time Raise 6.7 Seconds
Cycle Time Dump 5.1 Seconds
Cycle Time Lower, Empty, 2.9 Seconds
Float Down
Service Refill Capacities
Fuel Tank 430 L 113 gal
Cooling System 43 L 11 gal
Crankcase (with Filter) 29 L 7.66 gal
Final Drives (each) 28.5 L 7.5 gal
Hydraulic Tank 67 L 17.7 gal
Pump Drive Box 3.8 L 1 gal
Pivot Shaft 3 L 0.8 gal
Hydraulic System 169 L 44.6 gal
Hydrostatic Drive System 83 L 21.9 gal
Engine
Engine Model Cat C9
Net Flywheel Power 178 kW 239 hp
Net Power Caterpillar 178 kW 239 hp
Net Power ISO 9249 178 kW 239 hp
Net Power SAE J1349 178 kW 239 hp
Net Power EEC 80/1269 178 kW 239 hp
Bore 112 mm 4.41 in
Stroke 149 mm 5.87 inDisplacement 8.8 L 537 in3
Cat C9 engine with ACERT Technology to meet U.S. EPA
Tier 3 (Jan 2006), European Union Stage IIIA 97/68/EC
(Jan 2006) and Japan Ministry of Land, Infrastructure and
Transport (Oct 2006) emissions.
Engine ratings at 2,150 rpm.
Net power advertised is the power available at the flywheel
when the engine is equipped with fan, air cleaner, muffler,
and alternator.
No derating required up to 4572 m (15,000 ft) altitude.
Undercarriage
Track Shoe Type Double Grouser,
Extreme Service
Track Shoe Width Standard 500 mm 19.7 in
Track Shoe Width Optional 675 mm 26.6 in
Track Rollers Each Side 7
Number of Shoes Each Side 40
Track on Ground 2930 mm 115 in
Ground Contact Area Standard Shoe 2.93 m2 4,542 in2
Ground Contact Area Optional Shoe 3.96 m2 6,138 in2
Ground Pressure Standard Shoe 88.3 kPa 12.8 psi
Ground Pressure Optional Shoe 65.3 kPa 9.4 psi
Grouser Height Double Grouser 49 mm 1.93 in
Track Gauge 2080 mm 82 in
Wide Gauge Arrangement available for lower ground
pressure applications.
Ground pressure is calculated using operating weight
of machine with GP bucket, teeth and segments.
-
8/14/2019 Caterpillar 973C
18/2418 973C Track Loader specifications
Ripper Specifications
Type Radial
Number of Pockets 3
Overall Width/Beam 2200 mm 86 in
Shank Cross Section 74 175 mm 2.9 6.9 in
Ground Clearance 670 mm 26 in
Penetration 428 mm 17 in
Ripping Width 2000 mm 78.74 in
Cylinders Bore 127 mm 5 inCylinders Stroke 365 mm 14.4 in
Addition to Machine Length due to 1875 mm 73.8 in
Ripper (in Transportation Position)
Standards
ROPS (Rollover Protective Structure) offered by Caterpillar
for the machine meets ROPS criteria SAE J397 OCT95,
SAE J1040 MAY94, ISO 3164:1995, ISO 3471:1994.
FOPS (Falling Object Protective Structure) meets
SAE J231 JAN81, ISO 3449:1992 Level II.
Brakes meet the standard SAE J1026 APR90, ISO 10265:1998.
The operator sound exposure Leq (equivalent sound pressure
level) measured according to the work cycle procedures
specified in ANSI/SAE J1166 MAY90 is 85 dB(A), for cab offered
by Caterpillar, when properly installed and maintained and
tested with the doors and windows closed.
Hearing protection may be needed when operating with an
open operator station and cab (when not properly maintained
or doors/windows open) for extended periods or in a noisy
environment.
The exterior sound power level for the standard machine
meets the sound directive 2000/14/EC.
Electrical System
Type 24V DC
Battery Capacity 1100 CCA
Battery Voltage 12
Battery Quantity 2
Alternator 65-amp, Heavy-duty
Brushless
Weights
Operating Weight 26 373 kg 58,142 lb
Shipping Weight Without Bucket 24 263 kg 53,490 lb
Operating Weight: Includes coolant, lubricants, 100% fuel tank,
ROPS/FOPS cab, General Purpose Bucket with long bolt-on
teeth and segments and 75 kg (65 lb) operator.
Shipping Weight: Includes coolant, lubricants, 10% fuel tank,
ROPS/FOPS cab and no bucket.
Buckets
Capacity General Purpose 3.2 m3 4.19 yd3
Capacity Multi-Purpose 2.9 m3 3.79 yd3
Bucket Width General Purpose 2845 mm 112 in
Bucket Width Multi-Purpose 2710 mm 107 in
Bucket capacities are with long bolt-on teeth and segments.
Bucket widths are based on a bare bucket.
Operating Specifications
Max. Travel Speed 10 km/h 6.2 mph
-
8/14/2019 Caterpillar 973C
19/2419973C Track Loader specifications
1 Overall machine width without bucket:
with standard tracks 500 mm (19.7 in shoes) 2580 mm (102 in)
with wide tracks 675 mm (26.6 in shoes) 2755 mm (108.46 in)
2 Ground clearance from face of shoe 457 mm (17.9 in)
Grading angle 69
3 Machine height to top of cab 3500 mm (137.8 in)
4 Length to front of track 5178 mm (203.8 in)
5 Overall machine length N
6 Carry position approach angle 15
7 Digging depth N
8 Maximum rollback at ground N
9 Maximum rollback at carry position N
10 Bucket height in carry position N
11 Reach at full lift height N
12 S.A.E. specified dump angle 45 (46 max.)
13 Maximum rollback, fully raised 58
14 Dump clearance at full lift height and 45 discharge N
15 Height to bucket hinge pin 4235 mm (166.7 in)
16 Overall machine height, bucket fully raised N
17 Height to top of seat with headrest 2970 mm (117 in)
18 Height to top of stack 2989 mm (118 in)
N Dimensions vary with bucket. Refer to Operating Specifications chart.
DimensionsAll dimensions are subject to change without notice.
18
2
11
6
317
10
7
9
8
12
13
16
15
14
41
5
-
8/14/2019 Caterpillar 973C
20/2420 973C Track Loader specifications
Rated bucket capacity
(Nominal heaped)
Struck capacity
Bucket width overall
Bucket weight
Dump clearance at full
lift and 45 discharge
Reach at 45 discharge angle
and 2133 mm (84 in) clearance
Reach at full lift and
45 discharge
Digging depth
Maximum rollback at ground
Maximum rollback at carry position
Bucket height in carry position
Overall machine length
Bucket level on ground
Overall machine height
with bucket at full raise
Static tipping load
Breakout force with tilt cylinders
Bucket level at ground
Operating weight*
2.8 3.2 3.2 3.2 2.5 2.6 2.9 2.9
3.66 4.19 4.19 4.19 3.66 3.4 3.79 3.79
2.41 2.77 2.77 2.46 2.46 2.19 2.56 2.563.15 3.62 3.62 3.22 3.22 2.86 3.35 3.35
2845 2845 2845 2934 2705 2710 2762 2710
112 112 112 116 107 107 109 107
1745 2103 1988 1914 1974 2755 3027 3012
3,848 4,638 4,384 4,221 4,353 6,074 6,673 6,640
3358 3154 3281 3154 3032 3049 2828 2966
132 124 129 124 119 120 111 116
1992 2096 2031 2096 2009 1832 1936 1871
78 82 80 82 79 72 76 73
1313 1482 1357 1482 1451 1261 1403 1293
51 58 53 58 57 49 55 50
92 143 122 92 92 200 254 230
3.6 5.6 4.8 3.6 3.6 7.9 9.1 9.0
42 43 43 43 43 45 46 46
50 50 50 50 50 51 51 51
505 505 505 505 505 602 602 602
20 20 20 20 20 24 24 24
7092 7362 7175 7362 7541 7333 7591 7415
279 290 282 290 297 289 299 292
5692 5692 5692 5692 5742 5801 5801 5801
224 224 224 224 226 228 228 228
20 249 19 747 19 908 20 010 19 195 18 786 18 842
44,649 43,542 43,897 44,122 42,318 41,416 41,539
213.3 194.5 195.7 181.3 173.9 159.7 161.1
47,992 43,762 44,032 40,792 39,127 35,932 36,247
26 373 26 731 26 616 26 542 26 602 27 432 27 704 27 689
58,153 58,941 58,688 58,525 58,657 60,477 61,077 61,044
m3
yd3
m3
yd3
mm
in
kg
lb
mm
in
mm
in
mm
in
mm
in
Deg
Deg
mm
in
mm
in
mm
in
kg
lb
kN
lb
kg
lb
General purposebucket
Rockbucket
Bare
8, Bolt-onlong teeth
& segments
Bolt-oncuttingedge
8, Weld-onlong teeth
8, Weld-onlong teeth
* Includes coolant, lubricants, full fuel tank, ROPS cab, bucket and 75 kg/165 lb operator.
Specifications and ratings conform to all applicable standards recommended by the Society of Automotive Engineers.SAE Standard J732 JUN92 and SAE Standard J742 FEB85 govern loader ratings.
Ripper with 3 shanks (bumper removed) +672 kg +1,482 lb +208 kg +458.6 lb
Rear bumper (removal) 572 kg 1,261 lb 1339 kg 2,952.5 lb
Change InOperating Weight
Change In StaticTipping Load
NOTE: Machine stability can be affected by the addition of other attachments. Add or subtract to/from machine operating weight andstatic tipping load. English measurements obtained from converting metric to English and rounding off.
Operating Specifications
Bare
8, Bolt-onlong teeth
& segments
Bolt-oncuttingedge
Multi-purposebucket
-
8/14/2019 Caterpillar 973C
21/2421973C Track Loader specifications
Standard EquipmentStandard equipment may vary. Consult your Caterpillar dealer for details.
OPERATOR ENVIRONMENT
Air conditioner
Armrests, adjustable
Ashtray, lighter (24-volt)Cab, pressurized and sound suppressed
tinted glass, (ROPS/FOPS)
Coat hook
Control, single lever, pilot operated
for implement hydraulics
Cup holder
Heater and defroster
Horn
Instrumentation, gauges
Engine coolant temperature
Fuel level
Hydraulic oil temperature
Power train oil temperatureInstrumentation, alert indicators
Charge filter bypass
Charge oil pressure
Check engine
Electrical charging (too high/too low)
Engine oil pressure
Ether aid activated
Fuel pressure
Hydrostatic drive system
Low fuel
Pump drive (splitter box) oil temperature
Key start
Mirror, review (internal)Parking brake switch, brake-on indicator light
Radio ready, 24-volt to 12-volt converter,
speakers, antenna, mounting bracket
Seat, (cloth) air-suspension with side-to-side isolator
Seat belt, retractable, 50 mm (2 in)
Sound Suppression, Spectator
Speed mode switch, (Work-Travel)
Storage compartments under armrests
(lockable on right armrest)
Wipers/washers (front and rear)
Intermittent front wiper
ELECTRICAL
Alarm, back-up
Alternator (24-volt, 65-amp)
Batteries, 1100 CCA, high-output, maintenance freeElectronic Hydrostatic Control (EHC)
Caterpillar Monitoring System (CMS)
Lighting system (halogen), (4) 2 forward, 2 rear
Power outlet, 12-volt
Starting motor, 24-volt electric
POWER TRAIN
Adjustable steering pedal
Blower fan
Engine, Cat C9 engine with ACERT Technology,
direct injection, ATAAC, turbocharged,
with ADEM A4 controller
Filters, air (radial seal)Fuel priming pump, electric
Muffler
Pre-cleaner, air intake
Radiator guard, HD, perforated, swing-out, latched grill
UNDERCARRIAGE
Sprocket guards
Sprocket rims, replaceable bolt-on Tough Steel segments
Track, Caterpillar EWL (Extended Wear Life) sealed and
lubricated (40) sections
Track adjuster, hydraulic
Track guiding guards, end section
Track roller guardTrack idlers, lifetime lubricated
Track rollers (7), one upper carrier roller
lifetime lubricated
Track roller frame, oscillating
Track shoes, 500 mm (20 in), double grouser,
extreme service
OTHER STANDARD EQUIPMENT
Bottom Guard
Bucket positioner, automatic
Bumper, rear
Coolant, extended life
Cooler, hydraulic oil
Crankcase guard, full
Engine enclosure, lockable doors
Hitch, front retrieval
Lift kickout, automatic
Starting Aid, ether
Vandalism protection fuel tank cap and radiator cap
with padlocks
XT Hoses
-
8/14/2019 Caterpillar 973C
22/2422 973C Track Loader specifications
Optional EquipmentOptional equipment may vary. Consult your Caterpillar dealer for details.
Controls (for equipment hydraulic system)
Two-lever control
3rd valve for use with lines for front and rear attachments
Diverter valve for use when both front and rear linesare required
Counterweights 2 arrangements
Medium
Heavy
Drawbar hitch
Guards:
Cab lights
Idler
Lift cylinders
Seal protection final drive, pivot shaft, and idler seals
Product link
Ripper/scarifier, three ripper shanks (bumper removed)
Starting aids:Engine coolant heater, 120- or 220-volt
Track shoes:
500 mm (20 in) double bar grouser, RBT
675 mm (27 in) double bar grouser, RBT
Anti-theft, Machine Security System (MSS)
Buckets:
General Purpose (GP) 2.8 m3 (3.6 yd3)
General Purpose (GP) with weld-on flush-mountedadapters 2.8 m3 (3.7 yd3)
Multi-purpose (MP) 2.9 m3 (3.8 yd3)
Bucket cutting edge, reversible, with end bits, sharpened, bolt-on
GP bucket
MP bucket
Rock with 8 weld-on, flush mounted adapters, spade spade
cutting edge 2.5 m3 (3.2 yd3)
Bucket edge segments, bolt-on, for GP and MP buckets
Bucket teeth, set of 8 bolt-on adapters and tips (K90), includes
corner adapters
General duty, for GP bucket
General duty, for MP bucket
Extra duty, for GP bucketExtra duty, for MP bucket
Penetration, for GP bucket
Penetration, for MP bucket
Bumper (removed)
-
8/14/2019 Caterpillar 973C
23/24973C Track Loader specifications 23
Notes
-
8/14/2019 Caterpillar 973C
24/24
For more complete information on Cat products, dealer services
and industry solutions, visit us on the web at www.cat.com
2006 Caterpilla
All Rights Reserved
Printed in U.S.A
Materials and specifications are subject to change without notice
Featured machines in photos may include additional equipment
See your Caterpillar dealer for available options
CAT, CATERPILLAR, their respective logos, Caterpillar Yellow and the
POWER EDGE trade dress, as well as corporate and product identity used herein
are trademarks of Caterpillar and may not be used without permission
AEHQ5678-02 (12-06)
Replaces AEHQ5678-01
973C Track Loader