770 ® Off-Highway Truck Engine Engine Model Gross Power – SAE J1995 Net Power – SAE J1349 Weights – Approximate Target Gross Machine Operating Weight Cat C15 ACERT™ 381 kW 511 hp 355 kW 476 hp ® 71 214 kg 157,000 lb Operating Specifications Nominal Payload Class Body Capacity – SAE 2:1 36.3 tonnes 25.1 m3 40 tons 32.9 yd3 • Refer to the Caterpillar® 10/10/20 Overload Policy for maximum gross machine weight limitations. • Capacity with flat floor body.
770 Off-Highway Truck Engineered for performance, designed for comfort, built to last. Power Train – Engine Power Train – Transmission Structures ✔ The Cat® C15 engine with ACERT™ ✔ The Cat® seven-speed power shift ✔ The 770 features a mild-steel, box-section Technology uses advanced engine transmission matched with the Cat C15 type frame to deliver durability and long technology to reduce emissions engine with ACERT Technology provides life with low operating costs.
Operator’s Station ✔ The 770 features an all new operator station with enhanced visibility, increased operator space and ergonomically designed controls that set new industry standards for operator comfort. All controls and gauges are positioned for optimum efficiency and total machine control. pg.
Power Train – Engine The Cat® C15 engine with ACERT™ Technology is built for power, reliability and efficiency for superior performance in the toughest applications. Overhead Cam. A single overhead cam is driven by gears on the front of the engine, which significantly reduce noise and vibration. Caterpillar also has added two pendulum absorbers, mounted at the front of the camshafts to further reduce noise and vibration. Pistons, Connecting Rods, Cylinder Liners.
Turbochargers. The single, waste-gated turbocharger found on the C15 engine is water-cooled to accommodate sudden hot machine shutdowns. Water cools the bearings during this event, preventing bearing seizure. The C15 engine also includes a new turbine housing and an additional spacer bearing. The addition of a spacer bearing eliminates snap rings and, therefore, reduces complexity and improves shaft motion. The turbocharger uses an aluminum compression wheel.
Power Train – Transmission Cat power train delivers more to the ground for greater productivity and lower operating costs. Lock-Up Torque Converter. Combines maximum rimpull and cushioned shifting of torque converter drive with the efficiency and performance of direct drive.
New A-Frame. The new A-frame mounts directly to the spindles. The new A-frame eliminates the “king” bolt and includes a pin and bushing style mounting, consistent with the 777 and 793. This new design is simpler to maintain and service. New Ductile Iron Spindles. A stressoptimized, ductile iron spindle is splined to the rear brakes, reducing brake pack rebuild time by up to two hours. In addition, the spindles are longer and wider with fewer seals for increased strength and durability. Brake Packs.
Structures Rugged Cat structures are the backbone of the 770 off-highway truck’s durability. Box-Section Design. The 770 frame uses a box-section design, incorporating two forgings and 13 castings in high-stress areas with deep penetrating and continuous wrap-around welds to resist damage from twisting loads without adding extra weight. • Steel Structures.
Operator’s Station Ergonomically designed for operator comfort, superior control and high productivity. All New Center-Mounted Cab. Center cab positioning provides additional room and creates a walk-in-style cab. The new configuration allows the operator to easily enter and exit the cab. The cab environment offers a spacious surrounding, giving the operator the ability to stretch out and providing superior comfort for an entire operating shift.
Engine – Power Train Integration This system electronically combines critical power train components to work together more intelligently to optimize overall truck performance. 1 2 3 4 5 6 7 8 9 Engine Control Module (ECM) Sensors Mechanical Electronic Unit Injector (MEUI) Automatic Retarder Control (ARC) Traction Control System (TCS) Transmission/Chassis Control (TCC) Transmission Wheel Sensor Brakes CAT Data Link Cat Messenger 3 8 4 6 7 ET 9 2 5 1 Cat Data Link.
Body-up Shift Limiter. Prevents the transmission from shifting above a preprogrammed gear without the body being fully lowered. This function is programmable via Cat Electronic Technician (Cat ET) and Messenger. Body-up Reverse Neutralizer. Automatically shifts the transmission to neutral if the hoist lever is activated while the transmission is shifted in reverse. Overspeed Protection.
Brake System Reliable braking with superior control gives the operator the confidence to focus on productivity. Oil-Cooled Multiple Disc Brakes. Cat dry front and rear oil-cooled, multiple disc brakes are now hydraulically controlled, reducing maintenance costs. The 770 brakes provide exceptional, fade-resistant braking and retarding for maximum performance and productivity in all haul-road conditions. Extended Life Multiple Disc Brakes (Optional).
ARC 1 1 2 3 4 5 6 7 8 2 TCS Service Brake Sensor Engine Sensor ARC ARC Switch Brakes Service Brakes Axle Speed Sensor TCS 6 7 8 3 7 5 6 4 Parking Brake. The 770 parking brake function is provided by the spring-applied function in each of the rear oil-cooled disc brakes. The 770 parking brake is capable of holding the machine with a rated load on grades up to 15 percent. Automatic Retarder Control (ARC).
Serviceability Less time spent on maintenance means more time on haul roads. • Transmission, Hoist and Steering Lockout Switch. The 770 features an all-new transmission, hoist and steering lockout mode. This feature disables the steering, hoist and transmission hydraulics, and sets the parking brake while the engine is running, allowing maintenance and trouble-shooting on the truck. The operator can use this feature to take S•O•SSM analysis samples. • Electrical Breakers.
Electrical Access. The 770 features a new configuration for fuses, circuit breakers and rear cab-mounted relays, enabling up to 50 percent faster servicing. A 12-Volt and 24-Volt power port are included. The automotive-style fuses, which replace the screw-in type, are all incorporated into a single enclosure that is easily accessible from inside the cab. 10-amp and 15-amp spare fuses are also included in the new design. Cat Data Link.
Truck Body Systems Cat designed and built for rugged performance and reliability in the toughest hauling applications. • Front wall body rest supports are integrated into the front wall structure for enhanced durability. • Full-length, single-piece stringer rails are used, improving the structural support in the body, especially in the body pivot support area. • Front wall is 400 BHN and the thickness is increased from 10.2 mm (0.4 in) to 16.0 mm (0.
Rubber-Lined Body System. A new offering available from the factory is the rubber-lined body system. For impact resistance in hard-rock applications, rubber liners offer a practical, durable and cost-effective solution. They dissipate impact energy, maximizing body life and reduce noise, improving job site work conditions inside and outside the cab. These maintenance-free liners also require minimal installation time.
Information and Monitoring Systems Vital machine health and payload data keeps the 770 peforming at peak production levels. 1 2 3 4 5 6 7 8 9 3 1 2 Gauge Cluster Messenger Display Action Alarm ADEM A4 Engine Control Module CAT Data Link Payload Lamps Truck Production Management System Diagnostic Connector (ET) Automatic Retarder Control (ARC) Traction Control System (TCS) Transmission/Chassis Control (TCC) Module 8 7 6 9 5 4 New Features.
Truck Production Management System (TPMS) (Optional). TPMS provides valuable payload and cycle time data to improve productivity. • Uses strut pressure sensors and onboard microprocessor to determine payload weight. • Delivers consistent, accurate payloads and improves efficiency by minimizing overloading and underloading. • External lights signal loading tool operator when payload is reached.
Safety Caterpillar® machines and systems are designed with safety as the first priority. Brake Systems. Cat hydraulically controlled dry front and rear oil-cooled multiple disc brakes provide exceptional, fade-resistant braking and retarding for maximum performance and productivity in all haul-road conditions. The service brakes and retarding system are actuated by modulated hydraulic pressure, while secondary and parking brake functions are spring applied and hydraulic released.
Customer Support Caterpillar dealers have what it takes to keep trucks productive. Service Support. Every piece of Cat equipment is designed and built to provide maximum productivity and operating economy throughout its working life.
Engine Transmission Engine Model Rated Engine Speed Gross Power – SAE J1995 Net Power – SAE J1349 Net Power – ISO 9249:1997 Net Power – 80/1269/EEC Number of Cylinders Peak Torque Bore Stroke Displacement Cat® C15 ACERT™ 1,800 rpm 381 kW 511 hp 355 kW 476 hp 355 kW 476 hp 355 kW 476 hp 6 2320 N•m 1,711 lb-ft 137 mm 5.4 in 171 mm 6.7 in 15.2 L 927.6 in3 • Power rating applies at 1,800 rpm when tested under the specified condition for the specified standard.
Weight Distributions – Approximate ROPS Front Axle – Empty Front Axle – Loaded Rear Axle – Empty Rear Axle – Loaded ROPS/FOPS Standards 48% 34% 52% 66% • ROPS (Rollover Protective Structure) for cab offered by Caterpillar meets ISO 3471:1994 ROPS criteria. • FOPS (Falling Objects Protective Structure) meets ISO 3449:1992 Level II FOPS criteria. Suspension Sound Effective Cylinder Stroke – Front Effective Cylinder Stroke – Rear Rear Axle Oscillation 234 mm 149 mm 8.9º 9.2 in 5.
Dimensions All dimensions are approximate. 12 2 3 14 11 13 47.5° 10 1 9 15 16 7 8 5 6 4 17 18 19 20 1 2 3 4 5 6 7 8 9 10 24 Height to Top of ROPS Overall Body Length Inside Body Length Overall Length Wheelbase Rear Axle to Tail Ground Clearance Dump Clearance Loading Height – Empty Inside Body Depth – Max.
Weight/Payload Calculation (Example) Target Gross Machine Weight* kg (lb) Empty Chassis Weight* kg (lb) Body System Weight kg (lb) Empty Machine Weight kg (lb) Attachments Fuel Tank Size L (gal) Fuel Tank – 100% fill kg (lb) Empty Operating Weight** kg (lb) Target Payload* kg (lb) Target Payload* tonnes (tons) Target Gross Machine Weight* kg (lb) Empty Chassis Weight* kg (lb) Body System Weight kg (lb) Empty Machine Weight kg (lb) Attachments Fuel Tank Size L (gal) Fuel Tank – 100% fill kg (lb) Empty Oper
Gradeability/Speed/Rimpull To determine gradeability performance: Read from gross weight down to the percent of total resistance. Total resistance equals actual percent grade plus 1% for each 10 kg/t (20 lb/ton) of rolling resistance. From this weight-resistance point, read horizontally to the curve with the highest obtainable gear, then down to maximum speed. Usable rimpull will depend upon traction available and weight on drive wheels.
Retarding Performance To determine retarding performance: Add lengths of all downhill segments and, using this total, refer to proper retarding chart. Read from gross weight down to the percent effective grade. Effective grade equals actual % grade minus 1% for each 10 kg/t (20 lb/ton) of rolling resistance.
Retarding Performance With ARC Only ARC and Engine Brake Gross Weight E – Typical Field Empty Weight L – Target Gross Machine Operating Weight 71 214 kg (157,000 lb) 0 10 0 20 30 25 50 40 75 50 100 60 70 125 150 80 kg x 1000 175 lb x 1000 30% L 25% 1 20% 2 3 15% 4 5 10% 6 7 5% 0 0 5 5 10 10 15 15 20 20 25 30 25 35 40 30 45 50 35 40 55 60 45 65 70 Effective Grade (Grade Minus Rolling Resistance) E mph 75 80 km/h Speed Grade Distance – 450 m (1,500 ft) With ARC
Retarding Performance With ARC Only ARC and Engine Brake Gross Weight E – Typical Field Empty Weight L – Target Gross Machine Operating Weight 71 214 kg (157,000 lb) 0 10 0 20 30 25 50 40 75 50 100 60 70 125 150 80 kg x 1000 175 lb x 1000 30% L 25% 1 20% 2 15% 3 4 10% 5 6 7 5% 0 0 5 5 10 10 15 15 20 20 25 30 25 35 40 30 45 50 35 40 55 60 45 65 70 Effective Grade (Grade Minus Rolling Resistance) E mph 75 80 km/h Speed Grade Distance – 900 m (3,000 ft) With AR
Standard Equipment Standard equipment may vary. Consult your Caterpillar dealer for details.
Standard Equipment Standard equipment may vary. Consult your Caterpillar dealer for details.
770 Off-Highway Truck For more complete information on Cat products, dealer services, and industry solutions, visit us on the web at www.cat.com © 2007 Caterpillar 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. AEHQ5723-02 (12-07) Replaces AEHQ5723-01 CAT, CATERPILLAR, SAFETY.CAT.
