Specifications include, but are not limited to: ITEM: One low clearance combination auger, core, rotary type boring and subsurface exploration drilling machine built into a specifically designed high flotation track carrier.; TRACK CARRIER: The carrier shall have a rugged structural steel frame designed to resist bending and twisting when drilling or traversing rough terrain. The following specifications shall apply: (a) Tracks are driven by individual high efficiency two-speed axial piston swashplate hydraulic motors coupled to heavy-duty direct drive planetaries.; (b) Brakes shall be coupled to the planetaries that are static parking type, spring applied-pressure released.; (c) Steel drive sprockets shall be furnished for driving the tracks.; (d) Two 450 mm (17.72 inch) minimum width tracks shall be furnished that are made of steel core reinforced rubber with embedded metal grousers. It shall be possible to change to 320 mm (12.6 inch) wide tracks without modification to the carrier.; (e) The suspension shall be a walking beam design with three sets of walking beams on each side.; ROTARY DRIVE: The drill transmission shall have at least five speeds forward and one speed reverse. The transmission shall be mounted stationary on the drill main base frame with a heavy-duty 13 inch diameter clutch immediately adjacent to the transmission power input. The maximum drill spindle torque shall exceed 7,780 foot-pounds in first gear. Rotational speeds of the drill spindle shall range from at least 115 RPM in first gear to more than 800 RPM in fifth gear at 2,500 engine RPM. The spindle shall be hollow with at least a 2-3/4 inch ID. The output of the transmission shall power a single speed right angle drive. The right angle drive output shall turn a rotary drive bar that has a square cross section of at least 1.75 inches a side and shall be made of heat-treated alloy steel. The rotary drive bar shall power a rotary box that has flange type bearings that can be greased. The rotary box shall be grease packed and shall not run on oil and shall have removable access panels on the front and rear to facilitate inspection and maintenance procedures.; DRILL POWER UNIT: The power unit shall be a self-contained electric starting, liquid-cooled, heavyduty 4-cylinder Cummins turbocharged and charge-air cooled industrial type diesel engine, having not less than 229 cubic inch displacement and a minimum 120 gross horsepower. The engine shall meet U. S. EPA Tier 4f emission certification. The unit shall be equipped with a heavy-duty dry type twostage replaceable element air cleaner, primary fuel filter with water separator, secondary fuel filter and a replaceable full flow oil filter. The unit shall have and a 12-volt electric starting system consisting of a starter, alternator, and battery. The unit shall have a keyed ignition switch, starter switch, and electronic throttle switch on the drill control panel.
