1-10
Main Hoist:
Standard:
Turret mounted, planetary gear hoist is hydraulically powered to provide bare-
drum line pull of 5000 pounds (2270 kg) and a line speed of 86 ft/min (26
m/min).
Main Hoist Rope:
Main hoist rope is 3/8” (10 mm) in diameter, Warrington-Seale construction,
6x36 classification, EEIP grade, IWRC core, RRL lay, minimum breaking
strength 16,600 lbs (74 kN), 85’ (26 m) long. Weight per foot is 0.3 lbs (0.5 kg
per m). Note that rope weight is not included in load calculations.
Boom Swing:
Standard:
Heavy-duty ball bearing rotation gear with external teeth support the boom.
Rotation is powered by hydraulic motor and worm gear drive. 360° continuous
rotation.
Boom Attachments:
Standard:
Anti-Two-Block Device:
Has electric solenoid dump valve, which prevents damage to hoist rope and
machine components from accidentally pulling load hook against boom tip.
This valve will dump HOIST RAISE, TELESCOPE EXTEND, BOOM LOWER,
SWING LEFT, and SWING RIGHT circuits. No other circuits are affected.
These circuits are returned to normal operations by operating the HOIST
LOWER or the TELESCOPE RETRACT control. This system uses a trip arm
to activate switch.
Downhaul and Sheave Block:
Includes downhaul weight and hook for single-part-line. Downhaul and hook
assembly weight is 40 pounds (18 kg). Downhaul is designed to clamp dead
end of rope. Also includes sheave block for 2-parting line for lifts over 4000
pounds (1800 kg). Seven-inch (18 cm) OD sheave is grooved for 3/8” (10 mm)
wire rope. Sheave block weight is 60 pounds (27 kg). Both attachments are
specially designed to actuate the anti-two-block system.
Rated Capacity Limiter:
Operator's aid that warns operator of impending overload with audible and
visual signals. Has read-outs for load, boom angle, boom length, and load
radius. In the event of an overload, dumps the following boom functions:
HOIST RAISE, TELESCOPE EXTEND, BOOM LOWER, SWING LEFT, and
SWING RIGHT. These circuits are returned to normal by lowering the load to a
safe resting place with hoist, or by retracting or raising boom to a shorter load
radius. Key-operated, momentary override switch located under the dashboard.
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