A-A-58024
hydrostatic drive with infinitely variable speed control using four selectable
speed ranges in both forward and reverse. The ground drive motor shall have
two speed ranges which can be shifted while mobiling.
D. Use conditions. The trenching machine and specified attachments shall
negotiate 20 percent side slopes and 20 percent longitudinal slopes without
the engine or other pressure lubricated components losing constant operating
oil pressure and be able to operate without malfunction. These slope conditions
shall be accomplished without any wheel of . the trenching machine losing contact
with the ground.
E. Temperature conditions. Without preheating from an external source, the
engine shall start within five minutes and shall operate under full load
conditions within 15 minutes after engine start. The engine shall be capable
of operating in 15 to 115 degrees Fahrenheit ambient temperatures. The use of
starting aids is permissible.
F. Safety. The trencher shall not start unless an operator is in the seat,
the speed/directional control is in neutral, and the attachment drive control
is in neutral. While operating, the trenching machine shall shut down if the
operator leaves the seat and the speed/directional control or the attachment
drive control is not in neutral. The four post type Roll-over Protection
Structure (ROPS) shall be provided. The trencher(s) shall conform to all
Federal Laws and Regulations governing noise, air pollution and other health
and safety requirements which are in effect for this type of equipment at the
time of contract award.
G. Hydraulic System. The trencher shall have an efficient, cool-running
hydraulic system taking full advantage of a high capacity oil cooler, and a
hydraulic oil reservoir with baffles.
H. Instrumentation and controls. The following instruments and controls,
convenient to and in full view of the operator's normal operating position
shall be furnished:
1.
Voltmeter (or Ammeter)
Tachometer
2.
3.
Hourmeter
4.
Fuel gauge
5.
Oil pressure indicator
6.
Air cleaner indicator
7.
Speed/directional controls both foot and hand
operated
I. Attachments. The trencher shall be capable of being equipped with any of
thee following attachments:
1.
Multi-position digging attachment*
Vibratory plow with fiber optic package
2.
3.
Backhoe (24 inch bucket required, capable of digging
2
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