Caterpillar has released a new Extended High Lift (EHL) option for its 994F wheel loader that enables the machine to load Cat® 793 and similar size mining trucks more efficiently. The EHL linkage provides 1,075 mm more dump clearance compared to the previous High Lift linkage. For faster cycle times, the operator can back the 994F away from the truck without racking back the bucket. The additional lift also enables the operator to dump the last pass without pushing material. Centring the load for reduced truck wear, better handling and less spillage is easier, too.
The EHL linkage is designed to reduce operator fatigue, decrease loading time and improve daily production when loading 226-t size trucks. In a 793 loading test with the new linkage, cycle time decreased 5.5%, which resulted in a 5% increase in production. The 994F equipped with EHL linkage is rated at 32 t and can fill the 793 in seven passes.
The EHL option consists of new lift arms, lift and tilt cylinders, tilt links and counterweight material, which is added to the interior of the rear bumper. An extended high lift kit for retrofitting 994F wheel loaders already in the field will be available. New 994F wheel loaders also feature structural changes to both front and rear frames for extended durability.
The 994F is equipped with Cat 3516B HD EUI engine and delivers 1,176 kW gross power (1,092 kW net). The engine delivers high torque rise for fast response and fuel efficiency while maintaining long engine life. The 994F retains the Steering and Transmission Integrated Control (STIC) system that enables the operator to use small movements of a single hand to steer and to make direction and gear changes. STIC enables smooth operation with minimum effort.
To minimise operator effort while improving productivity, the Rimpull Control System enables the operator to set rimpull below 100% for optimum traction in unstable conditions. The operator can reduce rimpull and ground speed by using the impeller clutch pedal, which is fully modulating for smooth control when digging and loading.
The 994F also features designs to reduce maintenance time and make maintenance tasks easier and safer. The standard automatic lubrication system reduces maintenance time by automatically lubricating bearings requiring the most frequent attention. At the ground level service center, a maintenance technician can fill or drain fluid reservoirs and tanks.
For more information go to www.cat.com/equipment/wheel-loaders/large-wheel-loaders
