The 770 and 772 quarry and construction trucks add new size class to Caterpillar® line and deliver greater performance, durability and operator comfort

• 
• 10th November 2006
• Materials Handling
 

The Caterpillar 770 and 772 off-highway trucks are all-new models designed for construction, quarry and mining applications in the 36.3-tonne and 45.4-tonne payload classes, respectively. The 45.4-tonne model is a completely new size class for Cat® trucks. Both trucks incorporate new features to lower cost per tonne including a new engine and radiator, enhanced transmission and brakes, and a new cab and operator station. The new trucks also offer well-designed access for operators and service personnel. A new information system, Cat Messenger, aids both maintenance technicians and operators.

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 productivity and durability.

The 770 and 772 use the industry-exclusive Caterpillar 10/10/20 payload policy, which means that no more than 10 percent of loads may exceed 10 percent over target payload and no loads may exceed 20 percent over target payload. By following this policy, operators reduce cost per tonne, move more material, reduce spillage and haul road maintenance and increase machine life.

Designed for comfortable and efficient operation
The new trucks use the same all-new centre-mounted cab. It provides additional room, walk-in comfort, smoother ride and superior visibility: the new operator station is 8 percent larger with 52 percent more glass than in Cat’s D-series off-highway trucks. A new ergonomic design and layout of controls promotes operator efficiency and reduces operator fatigue. The seat is now in the centre 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 177.8-mm LCD colour 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 Production 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.

Cat engines with 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 355 kW (476 hp). The 772F has a Cat C18 engine with ACERT Technology. Net power is 399 kW (535 hp).

The engines meet 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, the Caterpillar on-board engine oil evacuation and pre-lube system, is now standard on quarry and construction trucks and reduces oil change labour 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.

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 overspeeding, 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.

Basic specifications

	770	772
Payload class (tonnes)	36.3	45
Body capacity* (m2)	25.1	31.3
Gross machine weight (kg)	71,215	82,101
Engine model	Cat C15 ACERT	Cat C18 ACERT
Net engine power (kW)	355	399
Gross engine power (kW)	381	446

* Standard body, heaped SAE 2:1

Reader inquiries
 
Caterpillar Information Centre
6, The Western Centre, Bracknell, RG12 1RW
Tel: +44 7000 222 846, Fax: +44 1344 488045