336 Excavator

  • Specs Summary
  • Engine Model
    Cat C9.3 ACERT
  • Gross Power – SAE J1995
    320 hp (239 kW)
  • Net Power – SAE J1349
    314 hp (234 kW)
  • Rated Payload
    26.5 tons (24 tonnes)

725C2 Articulated Truck

The Cat 725C2, with a 15 m3 (19.6 yd3) 24 tonnes (26.5 tons) capacity, offers proven reliability, durability, high productivity, superior operator comfort and lower operating costs. Updating the 725C to include all axle enclosed wet brakes and Automatic Traction Control makes the 725C2 the best option for our customers. Class leading levels of performance and operator comfort make for a productive machine all day long.

Engine

Every Tier 4 Final/Stage IV Cat engine with ACERT Technology is equipped with a combination of proven electronic, fuel, air and aftertreatment components. The right technologies fine-tuned for the right applications result in:

  • High machine performance across a variety of applications.
  • Enhanced reliability through commonality and simplicity of design.
  • Maximized uptime and reduced cost with world-class support from the Cat dealer network.
  • Minimized impact of Emission Systems: designed to be transparent to the operator without requiring interaction.
  • Durable designs with long life to overhaul.
  • Delivering better fuel economy with minimized maintenance costs while providing the same great power and response.

Advanced MEUI™-C Injector

Advanced MEUI-C injector platforms deliver increased injection pressures and more precise fuel rates. These durable injectors enhance responsiveness while controlling soot.

Innovative Air Management

All Cat engines feature innovative air-management systems that optimize airflow and enhance power, efficiency and reliability.

Cat NOx Reduction System (NRS)

The NRS captures and cools a small quantity of exhaust gas, then routes it back into the combustion chamber where it drives down combustion temperatures and reduces NOx emissions.

Aftertreatment Technologies

The aftertreatment solution utilized for Tier 4 Final/Stage IV products is the next evolutionary step for Cat engines with ACERT Technology. To meet the additional 80% reduction in NOx emissions required by Tier 4 Final/Stage IV emission standards, Caterpillar engineers only needed to add one new system to the already proven aftertreatment solution in use, Selective Catalytic Reduction (SCR).

Diesel Exhaust Fluid (DEF)

Cat engines equipped with a Selective Catalytic Reduction (SCR) system inject Diesel Exhaust Fluid (DEF) into the exhaust to reduce NOx emissions. DEF is a precisely mixed solution of 32.5% high purity chemical grade urea and 67.5% de-ionized water.

Transmission

The Cat TH31 six-speed forward, single speed reverse transmission features Advanced Productivity Electronic Control Strategy (APECS) and Electronic Clutch Pressure Control (ECPC) which deliver smooth gear changes with improved acceleration and higher productivity.

  • Speed hold/limiting function allows the machine speed to be limited in 1 km/h or 1 mph steps to conform to site speed restrictions.
  • Works in conjunction with the transmission retarder to automatically reduce the retarding level on lesser grades in lower gears.
  • Variable shift points used based on the operating conditions, which also aid in maintaining ground speed during gear changes on grades.

Torque Converter

Large capacity torque converter, configured for off-highway applications, allows the higher engine power to be transmitted more efficiently to the lower power train.

Transmission Retarder

The retarding system is integrated with the transmission and service brakes.

Automatic Features

Automatic Traction Control (ATC)

Application of the inter and cross-axle differential locks is ‘on-the-go’ and fully automatic. The operator does not have to think about when and where to engage either the inter or cross-axle differential lock. Sensors monitor the machine and wheel speeds, enabling instant response in low traction conditions. Operation is seamless and smooth, eliminating wheel slip for maximum traction and productivity.

Clutches are also automatically disengaged when not required, eliminating any impact on machine maneuverability, such as making a tight turn at the top of a grade.

The ATC system helps reduce tire and driveline abuse, eliminating lost efficiency caused by improper manual operation of the differential clutches, and reducing the cost of premature tire replacement.

Regeneration

When set to automatic, regeneration will occur without any interaction from the operator. The three modes of regeneration shown below allow the articulated truck to adapt to specific site conditions in the most efficient manner.

Automatic: The machine carries out “on-the-go” regeneration when the engine control module determines conditions are acceptable. The operator requires no action and the articulated truck is not required to stop working.

Automatic: Low idle regeneration is initiated when the machine is in a reduced operating mode for a predetermined period of time, and a number of conditions are met. The system is designed so that the operator can interrupt regeneration at any time.

Manual: A manual regeneration is initiated by pressing the regeneration switch for five seconds. The machine must be brought to a non-operating mode in order to perform a manual regeneration.

Suspension and Braking

All three axles have oscillating a-frames with lateral tie rods, controlling sideways movement of the axle and providing stability. In conjunction with suspension system, it allows the operator to travel at speed over rough terrain and softens impact loads on structures and components.

Front Suspension

Large bore, low-pressure cylinders are purpose designed for off-road applications and offer a soft, smooth ride for the operator. The front suspension oscillates ±6° to assist in providing a smooth ride. Suspension mounting points are integrated into the axle housing, increasing reliability.

Rear Suspension

Comprising of a walking beam and Caterpillar designed long life rear suspension mounts; the rear suspension system provides a reliable and stable ride for excellent travel over rough terrain and aids load retention.

All Axle Enclosed Wet Brakes

Introduced for the first time on this model, the oil-immersed system is a multi-disc, multi-plate design. Enclosing the brakes prevents the ingress of contaminants. This protects the system, extends life, and reduces replacement costs while improving machine uptime.

Operator Environment

Ride Comfort

The three-point front suspension with its oscillating axle and low‑pressure ride struts, combined with the center-mounted cab, offers unrivaled levels of ride comfort for the operator in all driving conditions. The operator remains comfortable and productive throughout the day.

Spacious Two-Person Cab

The large two-person cab, offers a comfortable working space for both the operator and a passenger. The passenger seat is fully padded with a backrest and a wide, retractable seat belt for a secure and comfortable ride. It is also positioned adjacent to the operator, giving both the operator and passenger a clear view of the instrument panel, controls and the road. The storage space behind the operator seat has been increased, and access improved the design and layout is common across all C Series Articulated Trucks.

Air Suspension Seat

The air suspension seat provides improved operator comfort with a cushioned upper high back, adjustable damping with three settings, ride zone indicator and adjustable lumbar settings. It is fully adjustable to provide the optimal driving position.

Cab Atmosphere

The air conditioning system keeps the in-cab temperature however the operator likes it, whatever environment they are operating in.

Optional Four-Point Seat Belt

Offering greater restraint and potentially better safety for operators, the four-point operator seat belt is now available as an option. The seat belt is part of an entire new seating arrangement, not solely an addition to the existing seat.

Ease of Operation

Control Layout

The cab is designed to make all aspects of machine operation as simple as possible. The controls and gauges are easy to read and straightforward to operate, the controls and gauges allow the operator to focus on safe machine operation while maintaining productivity.

Dashboard

The integrated wrap-around dash puts all controls within easy reach of the operator. Featuring LED illuminated rocker switches for the dash dimmer, rear wash wiper, hazard warning, work lamp, secondary steer, A/C and cigar lighter. Delivers an automotive feel with the industrial strength you would expect from Caterpillar.

Color Multi Purpose Display (CMPD)

The dash mounted display unit shows the operator various levels of performance and condition pages as well as machine warning categories. These include performance data, configuration settings, operator and machine totals, service information, various machine status parameters, machine payload information (when fitted), and the video feed from the rearview camera.

Bluetooth™ Stereo Connectivity

Make and receive calls in cab via the optional, Bluetooth equipped, mobile entertainment system.

Durability and Reliability

Front Frame

The front frame design features a large box section and wide, stiff frame beams to handle torque loads. The divergent frame design decreases stress in the hitch area and optimizes suspension geometry. The frame design makes maximum use of robotic welding for increased durability.

Rear Frame

Twin-box construction minimizes stress concentrations and provides low weight with long service life.

Suspension

The three-point oscillating axle front suspension provides unparalleled ride quality. It also protects the truck from adverse road conditions by absorbing shock loads that would reach the frame.

Articulating/Oscillating Hitch

The articulating hitch provides the truck with steering articulation, and the oscillation ensures all-wheel ground contact in rough terrain.

Hitch Construction

Field proven two-piece construction features a durable cast steel head bolted to a hard wearing forged steel tube.

Dump Body Design

All C Series machines have a large target area to provide consistently high load-carrying capacity. Its diverging flow design gives clean material discharge, which maximizes production and avoids the waste of carry-back.

Output Transfer Gear

Distributes drive to the tractor and trailer and includes a wet clutch differential lock for optimum traction in poor underfoot conditions.

Service Brakes

Dual-circuit, all wheel braking system. The full power hydraulic system actuates enclosed, oil immersed, multi disc, multi plate brakes with independent front and rear circuits and accumulators.

Parking Brake

Located on the center axle in an elevated position, it is spring applied and hydraulically released.

Cat CONNECT Technology

Cat CONNECT makes smart use of technology and services to improve your job site efficiency. Using the data from technology-equipped machines, you’ll get more information and insight into your equipment and operations than ever before.

Cat LINK

Cat LINK technologies, like Product Link wirelessly connect you to your equipment, giving you valuable insight into how your machine or fleet is performing. The system tracks location, hours, fuel usage, productivity, idle time, and diagnostic codes through the online VisionLink user interface so you can make timely, fact-based decisions to maximize efficiency, improve productivity, and lower costs.

Cat PAYLOAD

Cat PAYLOAD technologies like Cat Production Measurement bring payload weighing to the cab to help optimize job site efficiency and productivity. Operators can view real-time load weights on the integrated display and know precisely when target is achieved, while cab-mounted external payload lights signal the loader operator when to stop loading to reduce overloading. Operators can track daily productivity from the cab, with quick access to truck payload weights, loads and cycle counts, and daily totals; or remotely via LINK technologies.

Serviceability

Truck Transport

The suspension system eliminates the need to lower the suspension when transporting the truck, reducing maintenance and downtime. With the mirror arrangement folded, and even with a tailgate the machine is less than 3 m (118 in) in width.

Long Service Intervals

Changes to oil change intervals, volumes and the type of oil required will help lower maintenance costs and machine downtime.

Lubrication Points

Lubrication points are grouped in the hitch area for ease of servicing. Universal joints are lubed for life, eliminating any maintenance. An Autolube system is also optional, and now includes alerts via Product Link for low grease levels and faults.

Radiator

The radiator package is located behind the cab, which provides protection from frontal impacts and offers easy access to the inlet and outlet sides of the radiator.

Extended Life Coolant

Extends the change interval and improves component life by reducing aluminum corrosion.

Electrical Service Center

Located inside the cab, this service center provides a power port, diagnostic connector and Cat Data Link connector.

Cat Data Link Connector

The Cat Data Link connector provides a plug-in using a laptop with Electronic Technician (ET) software.

Service Access

The cab tilts to the side to provide easy access underneath, which simplifies access to the transmission, drive shafts and hydraulic pumps. Machine electrical and hydraulic interfaces are located on the right side of the cab, behind a removable body panel for easy access.

Service Points

Mounted on the left side of the engine under the electrically raised hood:

  • Engine dipstick and fill cap
  • Transmission dipstick and fill cap
  • Air, fuel water separator and fuel filters
  • Electrically operated fuel-priming pump
  • Coolant level indicator and fill cap are outside the cab

Complete Customer Support

Selection

Make comparisons of the machines you are considering before you buy. Your Cat dealer can help.

Purchase

Consider the resale value; compare productivity and day-to-day operating costs and fuel consumption.

Operation

For the best operating techniques to increase productivity and your profit, turn to your Cat dealer for the latest training literature and trained staff.

Maintenance

Repair option programs guarantee the cost of repairs up front. Diagnostic programs such as S∙O∙SSM and Technical Analysis help you avoid unscheduled repairs.

Replacement

Repair or rebuild? Your Cat dealer can help you evaluate the costs so you can make the right choice.

Product Support

Your local Cat dealership will be with you every step of the way with its unsurpassed worldwide parts support, trained technicians and customer support agreements.

cat.com

For more complete information on Cat products, dealer services and industry solutions, visit us at www.cat.com.

Sustainability

All Cat Articulated Trucks are designed to maximize efficiency and productivity while conserving natural resources.

Air Quality

The Cat C9.3 ACERT engine incorporating the Cat Clean Emission Module (CEM) meets Tier 4 Final/Stage IV emission standards, and has the flexibility of running on either ultra-low-sulfur diesel (ULSD) fuel or up to B20 bio-diesel blended with ULSD. All fuels must have no more than 15 ppm sulfur in the U.S., 10 ppm sulfur in the EU.

Recycle Waste

The Caterpillar Design, Manufacturing, Assembly and Test Site at Peterlee in England recycles 98% of all waste produced with zero waste to landfill.

Second Life

Rebuild and reman are designed and built into all Cat C Series Articulated Trucks. This gives machines a longer life while reducing waste and replacement costs.

Safety

Product Safety

Caterpillar has been, and continues to be proactive in developing machines that meet or exceed safety standards. Safety is an integral part of all machines and system designs.

Safety Features

  • Cab integral ROPS (Roll Over Protection System) and FOPS (Falling Object Protection System)
  • Rearview camera system incorporated into the CMPD, can provide a continuous panoramic rear view or when reverse gear is selected
  • The secondary and parking brake functions are spring applied and hydraulic released
  • Electro-hydraulic secondary steering system automatically activates in forward/reverse or when stationary if low pressure is sensed. Can be manually selected for machine recovery purposes.
  • Ground level external engine fuel cut off switch provides easy access outside of the machine
  • External electrical system disconnect switch for easy access outside of the machine
  • Slip resistant walkways – punched steel plate
  • 75 mm (3 in) wide seat belts for operator/trainer and passenger
  • Wide angled mirrors for excellent rear visibility
  • Sweeping hood design for panoramic forward visibility
  • Extensive handrails
  • Body raised alarm
  • Heated mirrors (optional)
  • LED-flashing beacon (optional)
  • Maximum speed limiter
  • Internal and external grab handles
  • Four-point seat belt option
  • Fire extinguisher in-cab mounting point
  • Fully raised body locking pin
  • Reversing indicator
  • Park brake switch safety lock

Engine

  • Engine Model Cat C9.3 ACERT
  • Gross Power – SAE J1995 320 hp (239 kW)
  • Net Power – SAE J1349 314 hp (234 kW)
  • Bore 4.53 in (115 mm)
  • Stroke 5.87 in (149 mm)
  • Displacement 567 in3 (9.3 L)
  • Engine Model – U.S. EPA Tier 4 Final/EU Stage IV Cat® C9.3 ACERT™
  • Net Power – ISO 14396 316 hp (236 kW)
  • No Engine De-rating Required Below 7500 ft (2290 m)
  • Peak Engine Torque Gross (SAE J1995) 1275 lb ft (1729 N·m)
  • Peak Engine Torque Net (ISO 14396) 1262 lb ft (1712 N·m)
  • Peak Engine Torque Speed 1200 RPM (1200 RPM)

Weights

  • Rated Payload 26.5 tons (24 tonnes)

Body Capacities

  • Heaped SAE 2:1 19.6 yd3 (15 m3)
  • Struck 14.4 yd3 (11 m3)
  • Tailgate Heaped SAE 2:1 20.4 yd3 (15.6 m3)
  • Tailgate Struck 14.5 yd3 (11.1 m3)

Transmission

  • Forward 1 5 mph (8 km/h)
  • Forward 2 9 mph (15 km/h)
  • Forward 3 14 mph (22 km/h)
  • Forward 4 21 mph (34 km/h)
  • Forward 5 29 mph (47 km/h)
  • Forward 6 36 mph (55 km/h)
  • Reverse 1 6 mph (9 km/h)

Operating Weights

  • Front Axle – Empty 31835 lb (14440 kg)
  • Center Axle – Empty 9755 lb (4425 kg)
  • Rear Axle – Empty 9205 lb (4175 kg)
  • Total – Empty 50795 lb (23040 kg)
  • Front Axle – Rated Load 5512 lb (2500 kg)
  • Center Axle – Rated Load 23700 lb (10750 kg)
  • Rear Axle – Rated Load 23700 lb (10750 kg)
  • Total – Rated Load 52912 lb (24000 kg)
  • Front Axle – Loaded 37374 lb (16940 kg)
  • Center Axle – Loaded 33455 lb (15175 kg)
  • Rear Axle – Loaded 32905 lb (14925 kg)
  • Total – Loaded 103707 lb (47040 kg)

Body Plate Thickness

Service Refill Capacities

  • Fuel Tank 108.8 gal (412 L)
  • Cooling System 21.9 gal (83 L)
  • Hydraulic System 29.1 gal (110 L)
  • Engine Crankcase 10 gal (38 L)
  • Transmission 12.4 gal (47 L)
  • Final Drives/Differential 33 gal (125 L)
  • Output Transfer Gear Box 6.3 gal (24 L)
  • DEF Tank ISO 22241-1 5.3 gal (20 L)

Ejector Cycle Times

Sound Levels

  • Interior Cab 76 dB(A) (76 dB(A))

Body Hoist

  • Raise Time 10 Seconds (10 Seconds)
  • Lower Time 8 Seconds (8 Seconds)

Standards

  • Brakes ISO 3450 – 2011
  • Cab/FOPS ISO 3449 Level II – 2005
  • Cab/ROPS ISO 3471 – 2008
  • Steering ISO 5010 – 2007

Steering

  • Lock to Lock 4.75 seconds @ 60 rpm

Body Plate

  • Type High strength Brinell HB450 wear resistant steel

Turning Circle

  • Note Dimensions are for machines equipped with 23.5R25 tires.
  • Turning Dimensions – Aisle width 210 in (5332 mm)
  • Turning Dimensions – Clearance radius 318 in (8075 mm)
  • Turning Dimensions – Inside radius 153 in (3879 mm)
  • Turning Dimensions – SAE turning radius 294 in (7470 mm)
  • Turning Dimensions – Steer angle – left/right 45°

Dimensions

Standard Equipment

Air conditioning with R134A refrigerant

Adjustable air vents

Auto shift six-speed forward and single speed reverse transmission

Cat C9.3 ACERT engine

Cat Clean Emission Module (CEM) and exhaust aftertreatment package

Cat rearview camera

Color Multi-Purpose Display (CMPD) incorporating the rearview camera feed

Dashboard Liquid Crystal Display (LCD):

  • Alert indicator, selected gear and direction, speed or auto shift, review Operation and Maintenance Manual (OMM), primary steering failure, seat belt warning, secondary steering failure, Machine Security System (MSS), secondary steering energy source engaged, hour meter and retarder active

Differentials: automatic clutched inter and cross-axle differential locks

Dual circuit oil immersed, enclosed brakes – all wheels

Electrical system: 24 volt, 5A 24- to 12-volt converter

Electro hydraulic hoist control

Glass windows: laminated front, toughened rear and toughened opening side

Guards: rear window, radiator, crankcase and axle

Heater and defroster with four-speed fan

Horn: electric

Lights: cab interior, front, width marker, side, rear, two reversing/work lights, two stop/tail lights, front and rear direction indicators

Machine Operation Monitoring System includes:

  • Action lamp, engine oil pressure, primary steering system, left turn signal, high beam, coolant temperature, tachometer, parking brake, fuel level, right turn signal, transmission oil temperature, brake system, transmission hold, hoist control, hydraulic system, charging system, retarder, transmission fault, traction control system, check engine lamp

Mirrors: extensive arrangement for improved visibility

Mud flaps: wheel arch and body mounted with transportation tiebacks

Product Link PL 321 or PL 522 dependent on location and licensing agreement

Retarder: hydraulic

Reverse/backup alarm

ROPS/FOPS cab

Seat, fully adjustable, air suspension

Seat, padded companion/trainer

Secondary steering – electro hydraulic

S∙O∙S sampling valves

Spill guard: front, integral part of fabricated body

Starting receptacle, electric, remote

Storage: cup holder, under seat, door pocket, behind seat, coat hook

Sun visor

Three axle, six-wheel drive

Tilt and telescopic steering wheel

Tires, six 23.5R25, radial

Two retractable seat belts

Vandalism protection: lockable caps for fuel tank, DEF tank and hydraulic oil tank

Windshield wiper and washer, two speed, intermittent (front)

Optional Equipment

Auto lube installation for automatic greasing of bearings

Body liners

Bluetooth radio stereo system

Caterpillar Production Measurement (CMP) payload monitoring system

Cold weather coolant –51° C (–60° F)

Cold weather start attachment

Engine block heater

Ether start

Exhaust heated body

Fast fuel fill

Flashing LED beacon

Four-point safety harness

Fuel additive-anti-waxing

Heated seat

Heated rearview motorized mirrors

Machine Security System (MSS)

Product Link PL 321, PL 522, VIMS™ Cellular, VIMS Satellite (where available)

Roof mounted High Intensity Discharge (HID) work lights

Scissor tailgate

Windshield wiper and washer, two speed (rear)

750/65 wide tires