Skip to main content

740C EJ

  • 740C EJ - Three Axle Articulated Trucks

740C EJ

The Cat 740C EJ with a 23 m3 (30.1 yd3) 38 tonnes (42 ton) capacity offers proven reliability, durability, high productivity, superior operator comfort and lower operating costs. With a focus on unique, adaptable productivity, the 740C EJ has many updated and improved features, an all new power train and new ease of operation features including Automatic Retarder Control.

Engine Model
Gross Power
381 kW
Net Power
370 kW
Rated Payload
38 t


Related Materials
File Format Size
740C EJ Product Brochure pdf 1.97 MiB


Optimized performance, proven reliability

Every 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:

Improved fluid efficiency of up to 5% improvement over Tier 4 Interim/Stage IIIB products.
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.
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

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

Engine Compression Brake

The engine compression brake improves retarding response and increases retarding power for controlled descent of grades.

Class leading transmission technology

The new Cat High Density Power Shift (HDPS) nine-speed forward two-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. Rimpull has been increased in both forward and reverse. 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. Gearshifts have been significantly improved to maintain direct drive lock-up, and reduce dropping into converter drive. This helps maintain ground speed and gradeability. Works in conjunction with the engine brake 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

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

Ease of use, improved performance

Automatic Traction Control (ATC)

The ATC system successfully introduced on the B Series has been further enhanced for even better performance. 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 diff 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 therefore productivity. Clutches are automatically disengaged when ground conditions allow, maximizing efficiency when steering or on uneven ground. ATC reduces tire and driveline abuse, eliminating lost efficiency caused by improper manual operation of the differential clutches, and reducing the cost of premature tire replacement.

Automatic Retarder Control (ARC)

In automatic mode, use of the retarder is much easier for the operator. As with ATC a number of machine operating aspects are monitored, and if required the engine compression brake is engaged automatically. The system can help towards eliminating engine overspeed, improving safe machine operation and reducing cycle times, yet still with the flexibility of manual control if needed.

Performance with comfort

Front Suspension

The three-point front suspension oscillates ±6° to provide a smooth ride, allowing the operator to travel at speed over rough terrain and softening impact loads on structures and components. Large bore, low-pressure cylinders are purpose designed for tough applications and offer a soft, smooth ride.

A-Frame Construction

The front suspension uses an oscillating A-frame with a lateral tie rod to control axle sideways movement and stability.

Rear Suspension

Features a walking beam with Caterpillar designed rear suspension mounts, which have long life and provide a reliable, and stable ride for excellent load retention.

Mounting Points

Suspension mounting points are integrated into the axle housing, increasing reliability.

All Axle Enclosed Wet Brakes

Provide smoother retarding and braking, with improved holding in slippery conditions and on grades.

Hill Assist

Eliminates potential ‘roll-back’ on grades. If an operator stops the machine on a grade, when taking his foot off the service brake pedal the machine will automatically hold the service brakes on for a number of seconds to prevent the machine from rolling backwards.

Improved productivity with a comfortable and confident operator

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 helps to keep you comfortable whatever environment you are operating in.

Waiting Brake

As the name implies, anywhere you are waiting you can use this feature to remove the need for repeated application of the parking brake. For example, if you are holding the machine on a grade, in a loading or dump area, select neutral and press the yellow button on the gear select cane. This will automatically apply the service brakes, without the need to apply the park brake. To disengage, put the machine in gear and the brakes are released.

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.

Designed around the operator

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.


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 via Bluetooth equipped mobile.

Proven structures and components

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.


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

The 740C EJ has a large target area to provide consistently high load-carrying capacity. Its ejecting mechanism 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.


Standard Equipment
Engine Model Cat C18 ACERT
Bore 145 mm
Stroke 183 mm
Displacement 18.1 l
Gross Power - SAE J1995 381 kW
Net Power - ISO 14396 376 kW
Engine Model - U.S. EPA Tier 2/EU Stage ll Cat® C18 ACERT™
Net Power - SAE J1349 370 kW
No Engine De-rating Required Below 3050 m
Peak Engine Torque Speed 1200 r/min
Peak Engine Torque Gross (SAE J1995) 2618 N·m
Peak Engine Torque Net (SAE J1349) 2558 N·m
Standard Equipment
Rated Payload 38 t
Standard Equipment
Heaped (SAE 2:1) 23 m³
Struck 18 m³
Standard Equipment
Forward - 1 6.1 km/h
Forward - 2 8.1 km/h
Forward - 3 11.2 km/h
Forward - 4 14.1 km/h
Forward - 5 18.7 km/h
Forward - 6 22.9 km/h
Forward - 7 31.5 km/h
Reverse - 1 6.4 km/h
Reverse - 2 14.6 km/h
Forward - 8 37.9 km/h
Forward - 9 54.8 km/h
Standard Equipment
Interior Cab 79 dB(A)
Standard Equipment
Center Axle - Empty 7950 kg
Rear Axle - Rated Load 18200 kg
Total - Empty 35540 kg
Front Axle - Empty 19880 kg
Front Axle - Loaded 21480 kg
Total - Loaded 73540 kg
Rear Axle - Empty 7710 kg
Total - Rated Load 38000 kg
Center Axle - Rated Load 18200 kg
Center Axle - Loaded 26150 kg
Rear Axle - Loaded 25910 kg
Front Axle - Rated Load 1600 kg
Standard Equipment
Type High strength Brinell HB450 wear resistant steel
Standard Equipment
Fuel Tank 550 l
Cooling System 90 l
Engine Crankcase 52 l
Transmission - OTG 75 l
Steering/Hoist Hydraulic System 140 l
Final Drive - Each 5 l
Brake Cooling Tank 67 l
Axles - Each 60 l
Standard Equipment
Eject Time 17 s
Retract Time 20 s
Standard Equipment
Lock to Lock 4.8 seconds @ 60 rpm
Standard Equipment
Brakes ISO 3450-2011
Cab - FOPS ISO 3449 Level II-2005
Cab - ROPS ISO 3471-2008
Steering ISO 5010-2007
Standard Equipment
Turning Dimensions - SAE Turning Radius 8624 mm
Turning Dimensions - Aisle Width 5961 mm
Turning Dimensions - Clearance Radius 9082 mm
Turning Dimensions - Steer Angle - Left/Right 45°
Turning Dimensions - Inside Radius 4413 mm
Note Dimensions are for machines equipped with 29.5R25 tires.