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Boom Attachments:
Standard:
Anti-Two-Block Device
:
Prevents damage to hoist rope and/or machine components from accidentally
pulling sheave block or downhaul weight against boom tip. Consists of trip arm at
boom tip, which is moved upward by sheave block or downhaul weight as hook
approaches boom tip. Trip arm actuates electric switch that is connected through
cable reel mounted on boom to solenoid dump valve in the hydraulic circuit. This
valve will dump the HOIST RAISE, TELESCOPE EXTEND, BOOM LOWER,
SWING LEFT and SWING RIGHT circuits. No other circuits are affected. These
circuits are returned to normal operation by operating the HOIST LOWER, BOOM
RAISE or TELESCOPE RETRACT control. There is also an override keyswitch
under the dashboard.
Rated Capacity Limiter:
Operational 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 load to a safe resting place with
hoist or by retracting or raising boom to a shorter load radius. There is also an
override switch under the dashboard.
Four-Part-Line Sheave Block:
Double sheave block for 4-part-line requirements. 10-inch (254 mm) O.D.
sheaves for ½-inch (13 mm) diameter wire rope. Swivel hook with safety latch.
200-pound (95 kg) weight provides positive overhaul. Includes bar on top to
actuate trip arm of Anti-Two-Block device.
Optional Boom Attachments:
Boom Extension - 15 Feet (4.6 m), 2H:
Provides 15 feet (4.6 m) of additional length for lifting loads with load line. Boom
extension may be stowed alongside base boom section when not in use. Tip
sheave, attaching brackets and pins included. Deduct 400 pounds (180 kg) from
Capacity Chart when boom extension is in the stowed position. Includes trip arm
for Anti-Two-Block device. Net Weight: 520 pounds (236 kg)
Boom Extension - 15 Feet (4.6 m) Offset, 2H:
Provides 15 feet (4.6 m) of additional length for lifting loads with load line. Boom
extension may be stowed alongside base boom section when not in use. Tip
sheave, attaching brackets and pins included. Deduct 400 pounds (180 kg) from
Capacity Chart when boom extension is in the stowed position. Includes trip arm
for Anti-Two-Block device. Boom extension will tilt through three positions, in
line, 15 degree offset and 30 degree offset. Net Weight: 670 pounds (304 kg)
Boom Extension - 16 Feet (5 m) Offset, 3H:
Provides 16 feet (5 m) of additional length for lifting loads with load line. Boom
extension may be stowed alongside base boom section when not in use. Tip
sheave, attaching brackets and pins included. Deduct 400 pounds from Capacity
Chart when boom extension is in the stowed position. Includes trip arm for Anti-
Two-Block device. Boom extension will tilt through 3 positions, in line, 15 degree
offset and 30 degree offset. Net Weight: 550 pounds (249 kg)
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