Completing the Cat D-Series Track Loader lineup is the new 973D, a “one-machine workforce” with features to take on the toughest jobs – at construction sites or in the harsh environments of quarries and demolition sites, steel mills and landfills.
The 973D’s new closed-centre, load-sensing implement hydraulic system uses a variable-displacement pump that produces only the precise volume of oil actually required for the job at hand.
Complementing the new hydraulic system are lift and tilt cylinders using position-sensing electronics, which allow operators to set lift and tilt kick-outs from the cab. Kick-outs are quickly reset for each job – or even each truck – to assure fast cycle times. In addition, end-of-travel snubbing assures that cylinders stop smoothly with less shock.
Buyers now can choose either joystick or pedal steering, and loader controls – either joystick or two-lever.
The new cab is sound-suppressed (rated at 74 dB-A), sealed, pressurized, air-conditioned, resiliently mounted and tilts (30 degrees in the field, 90 degrees in the shop) for access to major components.
The 8.8-litre Cat C9 diesel engine is rated at 263-net horsepower (196 kW).
The 973D’s main-frame/loader-tower is fabricated of single-slab primary rails, cross-member reinforcing and castings or forgings in high-stress areas to provide long-term durability for supporting multiple rebuilds. Oscillating track frames help smooth the operator’s ride, lessen shock loads to the machine and contribute to the 973D’s stability. Z-bar-type loader linkage uses massive single-slab boom arms and dual bell-cranks (each with its own tilt cylinder) to deliver exceptional breakout power.
For consistent work in soft underfoot conditions, the Wide-Gauge Package provides a stretched track gauge and low-ground-pressure track shoes. These features are complemented with a wider bucket that boosts productivity in grading and backfilling applications.
Caterpillar also is ready to design custom solutions to meet any customer’s exact needs.
