Caterpillar 797F capacity of 4000 liters. with. (2983 kW) and a nominal capacity of 400 tons combines the best qualities of the predecessors (models 797 and 797V). Model 797F characterized by easy maintenance and improved security. Service points are located so that they can get off the ground, which facilitates maintenance. The interval between services hydraulic filter is 1000 hours, which reduces the amount of required maintenance. For safety improvements include wider walkways, a rear access ladder and mounted on the bumper trehnapravlennuyu box locking and sealing.

20-cylinder Cat C175-20 ACERT with 4000 horsepower includes a single block. The engine was more than a quarter million hours of sea trials for mining trucks and power generation systems. The engine model C175 cylinder capacity of 5.3 liters, the total engine capacity of 106 liters. Model 797F has an output of 450 liters. with. more than its predecessor, the 797V, which used 24 cylinder Cat 3524B totaling 117 liters.
The design of the engine cross-flow cooling system uses four turbochargers, air intercooler and fuel system with a common backbone and e-government. This system allows multiple injection during one combustion cycle. These systems are characterized by an electronically controlled high energy release and low emissions. They also contribute to the fuel efficiency of Cat 797F dump truck and the speed of its response. The engine complies with EPA Tier 2 emissions. The engine cooling system is also electronically controlled, uses the engine cooling fan only when needed, saving of power and fuel.
The engine control module Cat ADEM A4 is 50 times better than its predecessor in computing power. The new module tracks more than 30 critical engine functions, operates 20 fuel injectors, and transmits more than 100 engine parameters that describe the state of the engine and can diagnose the problem.

Power Control

Rugged drive shaft transmits the huge torque C175-20 on the rear axle-mounted seven-speed transmission, which transmits power smoothly to the double step-down final drives through a massive rear axle. Torque converter with integrated locking increases speed characteristics and fuel efficiency.
Electronic control of the clutch pressure Caterpillar effectively controls the clutch when changing speed and load. This provides a gear without power loss. Additionally provides smooth shifting and increasing the lifetime of the coupling. Separate fluid system ensures supply of clean cold oil for lubrication and clutch transmission. Transmission provides protection against over-speeding of the engine and prevents downshifting (at high speeds) and allows you to program the maximum speed.
Integrated Braking System Caterpillar 797F model combines the functions of three braking systems (primary, secondary and parking) with auto deceleration device with hydraulic drive. Deceleration device placed in separate blocks located at each wheel. These submersible multi blocks have a common oil-cooled braking / retarding surface at 330,645 square centimeters. Integrated heat exchanger controls brake oil temperature, which ensures the brakes without derating and longer brake life.
Frame and Body

The frame consists of nine cast elements of mild steel welding are performed using the robot. All items have been tested with ultrasound. Large radial cast parts are elastic, allowing the frame to absorb bending and ensures its durability. Low-carbon steel provides the required flexibility, durability and impact resistance, even in cold climates.

For Cat 797F dump truck are four types of bodies intended for mining, which can be used in conjunction with variable lining systems, which provides an optimal balance between total usable volume and strength for a particular application. Customers can customize their body to the requirements of production and operating constraints. In some cases, the total effective volume can be 20 tons more than for the model 797B.
Operator position, machine control and safety
Made an angle mounted on the center instrument panel and center console are the main features of the new operator's station for the model 797F. Indications analog devices can be easily viewed, not taking his eyes off the road. Integrated Information System (third generation configuration) provides data on the state of the machine and loaded, and provides easy access to diagnostic information and information management machine. Additional tracking system monitors road conditions and lateral horizontal movement frame. This information can be used to improve the quality of transportation, allowing you to speed up, increase fuel efficiency and improve the life of the frame and the tires.
Levers and switches console are comfortably located just before the right arm, which provides ease of operation with minimal effort. Two fully adjustable seat with air suspension provides a comfortable fit throughout the entire shift for both the operator and for the instructor. Fully updated front and side windows provide excellent visibility of the road and work area. Wide stairs and walkways and handrails provide safety boarding and alighting. Wide-angle mirrors, the light body lifting, body lifting restrictive cables and converter backing further increase security.