The T 282B truck's 400-ton capacity, V-body dump bed has a flat floor and a straight dumping edge, which Liebherr said allows for easier dumping. The two General Engineering two-stage cylinders which lower and raise the bed are powered by a 300 gpm GearTek gear pump operating at 3000 psi. The bed has a 45[degrees] dump angle, and according to Liebherr can be raised in 28 seconds and lowered in 18 seconds.

A separate hydraulic circuit, driven by a 100 gpm Oilgear pressure compensated piston pump, powers the Ackerman steering system. The steering system also incorporates Sauer-Danfoss metering and control valves along with dual hydraulic cylinders. A 45 gal. reserve accumulator powers the steering in the event of engine or pump failure, the company said.

Located on the upper deck of the truck's high impact resistant, 85,000 psi steel frame are the electric ac drive, secondary systems and resistor grid box. Access to the deck and cab are provided by a straight or diagonal ladder configuration. The operator cab has a two-man compartment with integral POPS and Isringhausen air suspension driver scat. The cab is constructed of double wall insulation using a setback configuration designed to better protect the operator during a front to rear collision.

The cab is standard with Liebherr's PayLoad System, which shows the actual payload on a separate dash display. Also included on the dash are speedometer, tachometer, engine coolant temperature, volts, furl gauge and cruise setting. Operator information and fault history messages are displayed on a secondary gauge system. Three communication ports are used to feed and receive information from the engine, drive and payload systems. Forward, neutral and reverse are operated by a selector switch and braking is controlled by floor pedals.

Liebherr manufacturers the T 282B truck at its 3,266,847 sq.ft. facility in Newport News, where it also produces a line of self-propelled maintenance tools for use with earthmoving equipment. The facility employs 375 and was established in 1970.

Liebherr Mining Equipment Co. is a part of the Liebherr Group of companies which span 90 locations and produce a range of mining, aerospace, earth moving and cement mixing equipment; domestic appliances; machine tools; cargo handling machines; tower, mobile, crawler and maritime cranes; as well as six European hotels.

Eight trucks sold to gold mine

Liebherr announced that eight new T 282B diesel electric haul trucks have been sold to Cortez Gold Mines, near Crescent Valley, Nev. The nine is an existing joint venture of Plaer Dome Inc., Vancouver, B.C., Canada, and Kennecott Minerals Co., headquartered in Sale Lake City, Utah.

The Cortez mine reserves are estimated at 12.7 million ounces of recoverable gold and the operation has an expected 12 year lifespan. Carbon-in-leach, oxice heap leach and roasting technologies are used at Cortez in gold recovery.

Current annual production is said to range from 70 to 100 million tons. The 400-ton Liebherr trucks will be powered by 90 L, 20-cylinder DDC/MTU 20V-4000 engines rated 3650 hp at 1800 rpm. The trucks will be used to haul waste and leach. Initial deliveries were scheduled to begin in August.

COPYRIGHT 2004 Diesel & Gas Turbine Publications
COPYRIGHT 2004 Gale Group