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Caterpillar Adds New Class Size With 700, 772 Trucks

Wed September 12, 2007 - National Edition
Construction Equipment Guide

The Caterpillar 770 and 772 off-highway trucks incorporate many new features to lower cost per ton. The 772 features a 50-ton (45.4 t) payload, a new size class for Cat trucks.

Each of the trucks has a new engine and radiator, enhanced transmission and brakes, and a new cab and operator station. The new trucks offer access for operators and service personnel. A new information system, Cat Messenger, aids both maintenance technicians and operators.

The 770 and 772 are designed for construction, quarry and mining applications in the 40- and 50-ton (36.3 and 45.4 t) payload classes, respectively. The introduction of the two new models enables Caterpillar to discontinue the 769, which has served contractors and quarry operators since 1962. The 771, introduced as a quarry truck in 1992, also is discontinued.

Caterpillar now offers dual slope and flat floor body systems with three different steel liner packages and two rubber liner packages on the 770 and 772. Five different body liner systems for the 770 and 772 enable a customer to configure a truck for the specific application to achieve optimum capacity and durability.

Designed for Comfortable, Efficient Operation

The new trucks use the same all-new center-mounted cab. It provides additional room, walk-in comfort, increased visibility and better ride. A new ergonomic design and layout of controls promotes operator efficiency and reduces operator fatigue. The seat is now in the center of the cab for easier ingress and egress.

The Cat Comfort Seat delivers comfort, support and durability. The new heating, ventilation and air conditioning system produces greater airflow and even temperature throughout the cab. An optional camera system provides a view to the rear of the truck through a 7-in. LCD color monitor in the cab.

Valuable machine information is available to the operator or technician through Cat Messenger, which provides real-time and stored machine performance and diagnostic data through an LCD display in the cab. With the optional Truck Payload Management System (TPMS) attachment, Messenger also shows payload state, payload weight, loaded travel time, loaded travel distance and accumulated weight. TPMS now has second gear weighing capability and 2,400-cycle storage for data analysis.

ACERT Technology, Advanced Radiator, Drive Train

The new trucks feature Cat engines with ACERT technology for fuel-efficient operation, emissions compliance and responsive, reliable performance. The 770 uses the Cat C15 engine, producing net power of 476 hp (355 kW). The 772F has a Cat C18 engine with ACERT technology. Net power is 535 hp (399 kW).

The engines meet U.S. EPA Tier III and European Union Stage IIIa requirements while delivering slightly improved fuel economy when compared to the previous engine used in this size class. The engines feature the Caterpillar MEUI Fuel System, which combines the technical advancement of electronic control with the simplicity of direct, mechanically controlled fuel injection.

Due mainly to the efficient combustion technology, the engine service interval for each of the trucks is 500 hours — twice that of previous truck models. QuickEvac system, the Caterpillar on-board engine oil evacuation and pre-lube system, is now standard on quarry and construction trucks and reduces oil change labor time by as much as 50 percent.

A new modular radiator design provides 3.5 times more fin spacing, making it easier to clean and service. The single-pass flow cools more efficiently, too, when compared to the dual-pass system used previously.

The Caterpillar seven-speed power shift transmission is integrated with new Transmission Chassis Control electronics for improved performance and durability. A new differential design extends durability, according to the manufacturer.

Automatic retarder control (ARC) is now standard on Caterpillar quarry and construction trucks. ARC automatically controls braking on grade and maintains engine speed. ARC protects the engine from over-speeding, improves fuel efficiency, provides better control of the truck, increases productivity and eases the burden on the operator.

In addition to the standard automatic retarder, the compression brake option offers a 35 percent increase in retarding speed capabilities.

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