In 1963, Caterpillar introduced the 769, a revolutionary off-road truck that was purpose built for the rigors of mining and heavy construction. Fifty years later, our trucks have never been better. We’ve taken the best of our rugged, dependable heritage and combined it with technologies that help our environment, make your operators more productive and dramatically improve the economics of your haul fleet. This 770G has an updated traction control system to keep you moving when the ground conditions aren’t perfect, you’ll see improvements in fuel use through new and flexible fuel saving strategies, and we’re making the operating experience best in class with automotive quality shifting, noise reduction and cab updates. Our heritage and new use of technology are combined in this truck for one purpose – the continued success of your business.
|Engine Model||Cat® C15 ACERT™|
|Rated Engine Speed||1700.0 RPM|
|Gross Power – SAE J1995||384.0 kW|
|Net Power – SAE J1349||356.0 kW|
|Net Power – 80/1269/EEC||365.0 kW|
|Net Power – ISO 9249||356.0 kW|
|Number of Cylinders||6|
|Net Power – ISO 14396||379.0 kW|
|Net Torque – SAE J1349||2486.0 N·m|
Weights – Approximate
|Target Gross Machine Operating Weight||71214.0 kg|
|Chassis Weight||25378.0 kg|
|Body Weight||7850.0 kg|
|Target Gross Machine Weight||71214.0 kg|
|Nominal Payload Class (100%)||38.2 tonnes|
|Top Speed – Loaded||73.7 km/h|
|Body Capacity (SAE 2:1)||25.2 m3|
|Maximum Payload Class (110%)||42.0 tonnes|
|Not to Exceed Payload (120%)||50.4 tonnes|
|Target Payload Capacity||38.2 tonnes|
|Forward 1||11.9 km/h|
|Forward 2||16.3 km/h|
|Forward 3||22.2 km/h|
|Forward 4||29.8 km/h|
|Forward 5||40.4 km/h|
|Forward 6||54.4 km/h|
|Forward 7||73.7 km/h|
|Total Reduction Ratio||9.26:1|
|Brake Surface – Front||1395.0 cm2|
|Brake Surface – Rear||40225.0 cm2|
|Brake Standards||ISO 3450:1996|
|Pump Flow – High Idle||448.0 L/min|
|Relief Valve Setting – Raise||18950.0 kPa|
|Relief Valve Setting – Lower||3450.0 kPa|
|Body Raise Time – High Idle||7.5 Seconds|
|Body Lower Time – Float||10.0 Seconds|
|Body Power Down – High Idle||10.0 Seconds|
Capacity – Dual Slope – 100% Fill Factor
|Heaped 2:1 (SAE)||25.2 m3|
Capacity – Flat Floor – 100% Fill Factor
|Heaped 2:1 (SAE)||25.2 m3|
Weight Distributions – Approximate
|Front Axle – Empty||49.0 %|
|Front Axle – Loaded||34.0 %|
|Rear Axle – Empty||51.0 %|
|Rear Axle – Loaded||66.0 %|
|Rear Axle Oscillation||8.9 Degrees|
|Empty Loaded Cylinder Stroke Front||234.0 mm|
|Empty Loaded Cylinder Stroke Rear||149.0 mm|
Service Refill Capacities
|Fuel Tank||530.0 L|
|Cooling System||125.0 L|
|Differentials and Final Drives||180.0 L|
|Steering Tank||55.0 L|
|Steering System (Includes Tank)||87.0 L|
|Brake Hoist System||227.0 L|
|Brake/Hoist Hydraulic Tank||145.0 L|
|DEF Tanks||21.0 L|
|Torque Converter/Transmission System||64.0 L|
|Standard Tire||18.00R33 (E4)|
|FOPS Standards||FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II FOPS criteria.|
|ROPS Standards||ROPS (Rollover Protective Structure) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.|
|Sound Standards||Hearing protection may be needed when operating with open operator station & cab for extended periods or in noisy environment.|
|Sound Standards||Exterior sound pressure power level for standard machine measured according to tests specified in ISO 6395:2008 is 116 dB(A).|
|Sound Standards||Operator Equivalent Sound Pressure Level is 79 dB(A) & 74 dB(A) with EU sound suppression applied when ISO 6396:2008 is used.|
|Turning Diameter – Front||17.6 m|
|Steering Standards||ISO 5010:2007|
|Steer Angle||40.5 Degrees|
|Turning Circle Clearance Diameter||20.3 m|
|Height to Top of ROPS||3857.0 mm|
|Inside Body Depth – Maximum||1404.0 mm|
|Overall Body Length||8199.0 mm|
|Inside Body Length||5635.0 mm|
|Overall Length||8796.0 mm|
|Rear Axle to Tail||2586.0 mm|
|Ground Clearance||518.0 mm|
|Dump Clearance||506.0 mm|
|Loading Height – Empty||3147.0 mm|
|Overall Height – Body Raised||8255.0 mm|
|Operating Width||4780.0 mm|
|Centerline Front Tire Width||3110.0 mm|
|Engine Guard Clearance||335.0 mm|
|Outside Body Width||3931.0 mm|
|Inside Body Width||3627.0 mm|
|Front Canopy Height||4114.0 mm|
|Rear Axle Clearance||548.0 mm|
|Centerline Rear Dual Tire Width||2536.0 mm|
|Overall Tire Width||3693.0 mm|
Hauling quickly, efficiently, reliably
Our new G Series truck is equipped with a Cat C15 ACERT diesel engine. We recently celebrated 85 years in the engine business, and the work we’ve put into these U.S. EPA Tier 4 Final/EU Stage IV engines is the culmination of that experience. This C15 engine has been updated to meet global emission standards. Caterpillar equips every Tier 4 Final/Stage IV engine with industry leading electronic controls, fuel delivery, air processing and aftertreatment. The results are an engine that conserves fuel, manages emissions and facilitates greater diagnostics. For this G Series truck, engine software modifications are allowing the truck to get more work done at lower speeds and at greater fuel economy. We’ve balanced this change with the addition of 7% more torque for putting a greater percentage of the power to the ground. With our new transmission controls working in tandem with the engine, this truck is delivering significantly greater performance on grade and doing it more economically. One additional and significant change for G Series is the 770G’s ability to work at full power in higher altitudes. This truck has a 23% increase in altitude capability, allowing it to climb to just short of 3000 meters or close to 10,000 feet without affecting performance. Here are a few additional key features of the C15:
To preserve the performance and payload of the 770G, we’ve integrated the torque converter into the same housing as the transmission. Like our other G Series trucks, this transmission is managed by APECS, a strategy that provides an exceptionally smooth ride and allows power to carry through the shift points for excellent performance and speed on grades. In addition to delivering a quick and responsive truck, APECS is managing clutch pressures for long-life reliability. With its Cat power train components running in 7th gear, the 770G has a top speed of 79.2 km/h (49.2 mph).
What to Expect from APECS
We attribute many of the performance improvements on this truck to our integrated power train, and in particular our APECS transmission control strategy.
Reduced emissions using simple to use, reliable solutions
Our goal in designing our Tier 4 Final/Stage IV solution was to first provide our customers with a compliant product and secondly make it simple to operate, maintain and manage. With dozens of Cat products using similar systems, we’ve designed parts commonality and ease of use into our solution. For the 770G specifically, you will add DEF fluid (Diesel Exhaust Fluid) to a small tank next to the fuel tank. This tank holds 27 liters fluid (approximately 6 gallons), 21 liters usable fluid of DEF and is filled at the same intervals as the fuel tank. The rest of the process is automatic and hands free to your operator. The systems and components of our solution use Selective Catalytic Reduction to control emissions, and they are purpose built for the applications you’ll use them in. For cold environments, the system is heated, and for hot environments, the system is cooled. Our solution has three stages; NOx reduction in the engine is achieved by reintroducing a very small percentage of cooled exhaust gas back through the combustion chamber. With mandated low sulfur diesel fuel in today’s diesel engines, the exhaust is less corrosive and poses fewer risks to engine life. Our reintroduction of an exhaust mixture lowers combustion temperatures controlling NOx production. Exhaust gases leaving the engine are first routed through a diesel particulate filter (DPF) to reduce particulate matter. The system will then control any remaining NOx by injecting diesel exhaust fluid (DEF) into the exhaust stream. This mixture will undergo selective catalytic reduction, ammonia reduction – eventually breaking down the NOx into inert nitrogen gas and water.
Fuel Saving Strategies
Adjustable to meet your specific needs
Standard Economy Mode
G Series can adjust engine power based on your individual needs. Fuel savings are achieved by reducing power between 0.15 to 15 percent during all phases of operation.
Adaptive Economy Mode
New for G Series, this feature requires a customer-set baseline for production. Then, as the truck goes through the haul cycle and can hold a steady state, it constantly evaluates opportunities to reduce power and save fuel against your baseline. It’s fully automatic with no special operation required.
Auto Neutral Idle
As the 770G idles in a forward gear, such as waiting for the loader or crusher, the transmission will automatically slip into a neutral state that is more fuel efficient. As soon as the operator releases the brake or applies throttle, the truck shifts instantly back into the forward gear.
Engine Idle Shutdown
When your G Series truck is in park and idles for more than a preset time, the truck will initiate engine shutdown to conserve fuel. This feature can be time adjusted or turned on or off according to your specific needs.
Getting work done safely
In addition to the shift quality, fuel efficiency and performance benefits of APECS, there are several key safety functions being performed by this technology:
Speed Limiting Advantages
Speed limiting is a simple way to reduce risk on your haul roads. With speed limiting, the truck maintains your speed limit while running in its most efficient gear and corresponding engine speed. When you compare this to locking out gears, it can reduce your fuel use, noise levels and wear to power train components.
Confidence and control on grades
An important differentiator for Cat trucks is their outstanding brake performance. The design principle is one of long life and excellent performance in quarry, mine and earthmoving applications.
Hydraulically Actuated Brakes
Cat trucks are equipped with hydraulically actuated, rear brakes and caliper-disc front brakes. Each truck offers primary service brakes, hydraulic retarding and a parking brake. Two hydraulic accumulators provide the pressure required for the service brakes. The second accumulator acts as a back up. On the rear axle, the oil-cooled, multiple disc brakes have large discs that provide fade resistant performance. The parking brake is applied on the rear brakes and can hold the machine, with rated load, on a 15 percent slope. In turn, the service brakes are designed to hold the truck on slopes of 20%.
Automatic Retarding Control (ARC)
Automatic retarding control is standard on the 770G. ARC electronically controls braking on grade to maintain the engine speed at approximately 2,200 rpm (adjustable from 1,950 to 2,200 rpm in increments of 10). ARC is deactivated when not in a retarding situation. This feature does the work of controlling truck speed on long downhill hauls without constant input from the operator; it’s smooth for greater control and provides faster cycle times over manual retarding. ARC will automatically engage to prevent engine over speeding at any time during truck operation.
Cat Engine Brake
Caterpillar offers an optional engine brake. The Cat Engine compression brake works in conjunction with the ARC braking system to release pressure in selected cylinders to “brake” the machine during the compression stroke of the engine. By working in combination with ARC, the system reduces wear on brake components and allows the machine to travel up to 35% faster on downhill grades. This Caterpillar manufactured component is built for long, carefree service. It requires no tune-ups and no maintenance, except periodic valve lash checks, which are done as part of the routine engine maintenance. An on/off switch is located in the dash to disable the Cat compression brake.
Traction Control System
Saving tire life, component wear and cycle times
New Traction Control System
We’ve made significant updates to the performance capabilities of our traction control system. Our new system has:
Note: TCS is optional on this machine.
Bodies for your applications and material types
The goal of our body designs is to provide rated payloads on each haul. Since no two job sites are alike, we offer two body designs, optional side boards for lightweight materials, and two liner options to protect your investment and achieve the best possible wear life.
Flat Floor and Dual Slope Bodies
Both of our body designs, with the exception of the Quarry body, are manufactured with base steel thicknesses of 16 mm (0.62 in) on the floor. This robust design can be augmented with an additional 16 mm (0.62 in) steel lining or a rubber liner option depending on your material type and job site conditions. When choosing a body type, consider the following:
Caterpillar offers a single, 16 mm (0.62 in) steel liner that can be added to the flat floor and dual slope bodies to protect against high impact and highly abrasive materials.
Caterpillar offers a purpose-built quarry body for soft limestone applications. This body has a 25 mm (0.98 in), 400 BNH steel floor and does not require additional liners if kept in limestone.
Customers who are loading extremely hard material that has high impact characteristics should consider a factory-installed rubber liner system. Rubber has three times the impact resistance of steel, and it will absorb some of the noise associated with loading high impact material. Rubber liners should not be considered for applications that include clay, cohesive material or hot material. Rubber liners should never be used with body heat.
10/10/20 Payload Management Policy for Optimal Machine Life
The ideal hauling strategy that maximizes machine and machine component life is to keep the mean of all payloads at or below the machine’s rated target payload. Consistently overloading any truck will affect component life, reduce tire life, increase haul road maintenance and most importantly negatively impact your cost of doing business. Caterpillar’s 10/10/20 payload guidelines are in place to help you maximize the availability of your trucks and manage your hauling costs. For optimum availability and component life, Caterpillar recommends that no more than 10% of payloads exceed 110% of target payload. Payloads in excess of 120% of nominal payload will exceed the truck’s design parameters. Please consult with your dealer for more information on how this policy works.
Manufacturing and Design
Quality and value start here
Cat trucks are manufactured in Decatur, Illinois, where our facility has seen significant updates and is a flag ship for manufacturing at Caterpillar. Because reliability starts with clean parts, our assembly areas are in a dedicated building separate from fabricating. The assembly area is well lit, clean and contamination controlled. Our expert welders work on rotating platforms that provide ergonomic and thorough weld capability on our frames. All of our trucks are checked during design for ease of assembly, manufacture and serviceability. We follow up with process and quality checks at each assembly station using the Andon system, and additional quality inspections are made at the end of the assembly line and at the dealership before it is delivered to you.
Our frames have 50 years of hard-core experience behind their design, but with new tools available, we are able to improve and validate our frames using the latest technology. One thing that hasn’t changed is the frame’s ability to handle the high stresses of being loaded and hauling at high speeds. We continue to strategically combine castings and box section construction to manage application forces.
Key Systems and Components
Industry leading comfort, confidence and control
A truck is only as productive as its operator. To that end, we have updated the 770G with some key features to help old and new operators be comfortable and confident while operating the truck.
The instrument cluster is used by the operator for quick and simple machine information at a glance. This display also warns the operator with solid lights (Category 1 Warnings) or flashing lights (Category 2 or 3 Warnings) as well as an audible alarm when an event is occurring.
Advisor display provides a larger display area and a more user-friendly operator interface. The viewable screen area of the Advisor display is 86.4 mm × 115.2 mm (3.4 in × 4.5 in).
Information for key decisions
We’ve made our Vital Information Management System (VIMS) standard because it’s important. With VIMS on board, you can access production data, machine health and truck operation statistics. With this data you can make informed decisions on operator training, haul road efficiency and scheduled service intervals. In addition, VIMS reports on event logging, idle time and fuel use. VIMS information is available through the Advisor display inside the cab. Portals to connect and download the data are on the front bumper and inside the cab.
Monitoring Your Payload and Tires
Tracking your production and tire health
The Truck Payload Management System communicates to the loader operator using red and green lights to indicate when target payloads are on board. In addition, the system will store up to 2,400 payload and cycle time data points that are reported through VIMS. TKPH/TMPH calculates tire condition. It will warn the operator when the design limits are being approached, and it can be programmed to derate the truck to preserve tire life.
Because the right tools make a difference
Caterpillar can offer you loading tools that match your application and material types as well as your production requirements. Like the 770G, these machines are designed with important input from our customers and long hours of validation in the field. Whether your individual needs require a front shovel, an excavator or a wheel loader, Caterpillar has the model size, buckets and ground engaging tools to help you load the 770G quickly and efficiently. The 770G can be reasonably pass matched with these Cat loading tools. The number of passes will be determined by bucket size and material density.
Saving you time and money
Your Cat G Series truck is designed to provide operators and technicians with easy access to common service points like engine lockout, machine system lockout, fluid level sight gauges, grease fittings and access to the engine for regularly scheduled maintenance.
A commitment to your success
When you purchase a Cat machine, you have both Caterpillar and your Cat dealer standing with you. The resources available to you by working closely with your Cat dealer are extraordinary. With capabilities that range from complete service agreements, to site support to production studies to our global parts networks, we are committed to you, your business and making sure your equipment is running at peak efficiency. Whether you need a rental machine, operator training, assistance with financing or a machine rebuilt, our dealers have the experience, people and application knowledge to help you succeed. For more information about our services, our company, our dealers and the services we can provide, please reach out to your local Cat dealer, or visit us at one of the following web sites:
Safety and Sustainability
Priorities that support our people and communities
As we design a truck, we take the safety of the operator and personnel working on the ground very seriously.
At Caterpillar, we can further support you and your business with best practices and safety talking points with your employees.
By producing aggregate and minerals for new roads, bridges and energy, we bring about progress for our communities. Cat trucks are being designed to do this work with less of an impact on the environment, by being quiet, using less fuel, emitting fewer emissions and incorporating solid, long-life designs and components. The 770G model contributes with:
428F2 Standard Equipment
Boom Sticks and Linkages – Backhoe
Hydraulics – Loader
Canopy Plus Cab
428F2 Optional Equipment
Field Installed Attachments
Boom Sticks and Linkages – Backhoe
Boom Sticks and Linkages – Loader
Hydraulics – Backhoe
Hydraulics – Loader
Canopy Plus Cab