Equipment World Digital Magazine
Issue link: http://read.dmtmag.com/i/426956
EquipmentWorld.com | December 2014 57 each pair connects back to the frame on a single shaft so when you roll over a rock or other small obstacle the paired rollers crawl or oscillate over the obstacle rather lifting the whole machine up. The end result is a smoother ride and more consistent contact with the ground. Liebherr's fleet manage- ment telematics system, LiDAT, is installed as stan- dard. And the dozers are configured to make it easy to install 2D and 3D GPS machine control systems. The PR 746 weighs 63,714 to 67,902 pounds and uses a 252-horsepower engine. The PR 756 weighs 83,775 to 90,390 pounds and is driven by a 340-horsepower engine. The company uses its own 6-cylinder diesel engines in these machines and they are Tier 4 Final compliant and use SCR/urea injection as the primary emissions control technology. A lthough they won't show up in the United States until 2016, Liebherr gave us an early look last week at the three new telehandlers it is debuting in Europe in 2015. All three models offer a lifting height of 7 meters (22.9 feet), hence the dash-7 suffix. The two numbers before that tell you the lifting capacity, hence the TL-432-7 lifts 3.2 tons, the TL-436-7 can carry 3.6 tons and the TL-441-7 hoists up to 4.1 tons. A single joystick controls all operations and includes a travel direction switch. Cabs are generously sized with large windows and a tilting steering column. Hydrostatic drive gives these machines smooth, infinite speed control and stepless gear changes. Stability and visibility A new frame design and large wheelbase add stability as does the deep mounting po- sition of the telescopic boom in the frame. Fully lowered, the top of the boom surface sits well below the level of the operator's shoulder, offering excellent visibility on the starboard (right) side. The 45-percent, self-locking limited slip differential on the front axle and the wide swing angle of the rear axle give the new telehandlers a sure-footed feel in difficult terrain conditions. Selectable front-wheel steering, all-wheel steering and crab steering can get you in and out of just about any tight spot. Safety features To maximize jobsite safety the standard load torque limiter automatically regulates the speed of the working hydraulics. Should you try to lift too much weight too far over the safe operating range, functions that would cause the machine to tip over are blocked, and only movements that allow the machine to return to a safe and stable condition are allowed. Acoustic and visual overload warnings are also given. An automatic parking brake keeps these telehandlers from accidently moving on sloped terrain. Tier 4 Interim Deutz engines, rated at 101 horsepower, drive the dash-7 telehandlers. These engines use a diesel oxidation catalyst as the primary emissions control tech- nology. For applications on steep ground or those requiring additional lifting power, Liebherr offers an engine with 122 horsepower and increased hydraulic delivery rates. The company also said it plans to introduce 13- and 17-meter (42.6- and 55.7-feet) class telehandlers at a later date. Panoramic windows and steeply sloped sheet metal give you great visibility. Sneak preview: New 7-meter (22.9 feet) telehandlers A low pivot point on the boom gives excellent visibility to the operator's right side.