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Engineered for performance, designed for comfort, built to last.


Engine Model C15 ACERT C15 ACERT Less
Rated Engine Speed 1800.0 r/min 1800.0 r/min Less
Gross Power - SAE J1995 518.0 HP 381.0 kW Less
Net Power - SAE J1349 483.0 HP 355.0 kW Less
Net Power - 80/1269/EEC 476.0 HP 355.0 kW Less
Number of Cylinders 6 6 Less
Bore 5.4 in 137.0 mm Less
Stroke 6.7 in 171.0 mm Less
Displacement 927.6 in³ 15.2 l Less
Net Power - ISO 9249:1997 476.0 HP 355.0 kW Less
Peak Torque 1711.0 lb/ft 2320.0 N·m Less

Weights - Approximate

Target Gross Machine Operating Weight 157000.0 lb 71210.0 kg Less
Chassis Weight 53380.0 lb 24213.0 kg Less
Body Weight 22043.0 lb 9999.0 kg Less

Operating Specifications

Nominal Payload Class (100%) 40.0 Sh Ton 36.3 t Less
Top Speed - Loaded 46.5 mile/h 74.8 km/h Less
Body Capacity - SAE 2:1 32.8 yd³ 25.0 m³ Less
Target Payload Capacity 40.0 Sh Ton 36.3 t Less


Forward - 1 7.5 mile/h 12.1 km/h Less
Forward - 2 10.3 mile/h 16.6 km/h Less
Forward - 3 14.0 mile/h 22.5 km/h Less
Forward - 4 18.8 mile/h 30.3 km/h Less
Forward - 5 25.4 mile/h 40.9 km/h Less
Forward - 6 34.3 mile/h 55.2 km/h Less
Forward - 7 46.5 mile/h 74.8 km/h Less
Reverse 9.9 mile/h 15.9 km/h Less

Final Drives

Differential Ratio 2.74:1 2.74:1 Less
Planetary Ratio 4.80:1 4.80:1 Less
Total Reduction Ratio 13.15:1 13.15:1 Less


Brake Surface - Front 216.0 in² 1395.0 cm² Less
Brake Surface - Rear 6235.0 in² 40266.0 cm² Less
Brake Standards ISO 3450: 1996 ISO 3450: 1996 Less

Body Hoists

Pump Flow - High Idle 136.0 gal/min 515.0 l/min Less
Relief Valve Setting - Raise 2500.0 psi 17255.0 kPa Less
Relief Valve Setting - Lower 500.0 psi 3450.0 kPa Less
Body Raise Time - High Idle 9.5 s 9.5 s Less
Body Lower Time - Float 12.5 s 12.5 s Less
Body Power Down - High Idle 12.5 s 12.5 s Less

Capacity - Dual Slope - 100% Fill Factor

Struck 21.5 yd³ 16.4 m³ Less
Heaped 2:1 (SAE) 32.8 yd³ 25.1 m³ Less

Capacity - Flat Floor - 100% Fill Factor

Struck 21.5 yd³ 16.4 m³ Less
Heaped 2:1 (SAE) 32.8 yd³ 25.1 m³ Less

Weight Distributions - Approximate

Front Axle - Empty 48.0 % 48.0 % Less
Front Axle - Loaded 34.0 % 34.0 % Less
Rear Axle - Empty 52.0 % 52.0 % Less
Rear Axle - Loaded 66.0 % 66.0 % Less


Effective Cylinder Stroke - Front 9.2 in 234.0 mm Less
Effective Cylinder Stroke - Rear 5.9 in 149.0 mm Less
Rear axle - Oscillation 5.4 ° 5.4 ° Less

Service Refill Capacities

Fuel Tank 140.0 gal (US) 530.0 l Less
Cooling System 30.0 gal (US) 114.0 l Less
Differential - Final Drives 22.0 gal (US) 83.0 l Less
Steering Tank 9.0 gal (US) 34.0 l Less
Steering System - Including Tank 15.0 gal (US) 56.0 l Less
Brake / Hoist / Fan Hydraulic Tank 35.0 gal (US) 155.0 l Less
Brake/Hoist/Fan System (Tank) 73.0 gal (US) 277.0 l Less
Crankcase 9.0 gal (US) 34.0 l Less
Transmission - Torque Converter Sump 14.0 gal (US) 53.0 l Less
Transmission - Torque Converter System - Including Sump 19.0 gal (US) 72.0 l Less


Standard Tire 18.00R33 (E4) 18.00R33 (E4) Less


ROPS/FOPS Standards . . Less


Sound Standards . . Less


Steering Standards ISO 5010:1992 ISO 5010:1992 Less
Steer Angle 40.0 ° 40.0 ° Less


Height - Top of ROPS 12.83 ft 3911.0 mm Less
Overall Body Length 26.81 ft 8172.0 mm Less
Inside Body Length 18.21 ft 5549.0 mm Less
Overall Length 28.67 ft 8740.0 mm Less
Wheel Base 13.0 ft 3960.0 mm Less
Rear Axle - Tail 8.5 ft 2590.0 mm Less
Ground Clearance 2.23 ft 680.0 mm Less
Dump Clearance 1.52 ft 464.0 mm Less
Loading Height - Empty 10.24 ft 3120.0 mm Less
Inside Body Depth - Maximum 4.35 ft 1326.0 mm Less
Overall Height - Body Raised 27.17 ft 8280.0 mm Less
Operating Width 15.59 ft 4751.0 mm Less
Centerline Front Tire Width 10.2 ft 3110.0 mm Less
Engine Guard Clearance 2.21 ft 673.0 mm Less
Outside Body Width 13.0 ft 3960.0 mm Less
Inside Body Width 12.13 ft 3698.0 mm Less
Front Canopy Height 13.58 ft 4140.0 mm Less
Rear Axle - Clearance 1.67 ft 508.0 mm Less
Centerline of Rear Dual Tire Width 8.32 ft 2536.0 mm Less
Overall Tire Width 12.12 ft 3693.0 mm Less

Power Train – Engine

The Cat® C15 engine with ACERT™ Technology uses advanced engine technology to reduce emissions without after-treatment. The turbocharged, aftercooled 6-cylinder engine has faster response for superior performance in demanding applications.

Power Train – Transmission

The Cat seven-speed power shift transmission matched with the Cat C15 engine with ACERT Technology provides constant power and efficiency over a wide operating speed range for optimal power train performance.


The 770 features a mild-steel, box-section type frame to deliver durability and long life with low operating costs. Castings and forgings are strategically placed in high-stress areas to evenly distribute stresses and provide long fatigue life.

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.

Engine – Power Train Integration

The Cat Data Link electronically combines engine, transmission, brake and operational information to optimize overall truck performance. Stored diagnostic data can be accessed via the Cat Electronic Technician (Cat ET) service tool to improve troubleshooting and reduce downtime.

Brake System

Front dry disc and rear oil-cooled, multiple disc brakes are now hydraulically controlled, reducing maintenance costs and improving operator control and modulation. They provide exceptional, fade-resistant braking and retarding for maximum performance and productivity in all haul-road conditions.

Truck Body Systems

The 770 offers two body types with six different body liner system selections to accommodate almost any type of application. These body liner systems are designed to maximize strength and durability while providing the lowest cost per ton.

Information and Monitoring Systems

Standard on the 770, the Cat Messenger system provides real-time engine performance and operating data.


Caterpillar sets the standard when it comes to safety in the design and manufacturing of heavy equipment. Safety is not an afterthought at Caterpillar, but an integral part of all machine and systems designs.


The 770 offers 500-hour engine service intervals – 250 hours more than the 769D. Simplified service and maintenance features combined with improved service access are designed to reduce downtime.

Customer Support

Caterpillar® dealers provide unmatched product support, anywhere in the world. With industry-best parts availability and a wide range of maintenance and service options, Cat dealers have what it takes to keep your hauling machines productive.

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