FIGURE 4-46
Item Description
1 Main Hoist (Drum 1 in boom butt)
2 Whip Hoist (Drum 2 in crane)
3 Auxiliary Hoist (Drum 3 in boom butt)
4 Wire Rope Guide (on boom butt)
5 Wire Rope Guides (in insert)
6 Wire Rope Guide (on boom top)
7a To Lower Boom Point
7b To Extended Upper Boom Point (lower sheaves)
8a To Standard Upper Boom Point
8b To Extended Upper Boom Point (upper sheave)
2
6
7a
8a
2
1
4
6
7b
8b
Standard
Upper Boom Point
Extended
Upper Boom Point
7a
1
3
5
4
NOTE: See Wire Rope Specifications Chart for line pull of
drums. Drums 2 and 3 do not have same line pull
as Drum 1.
Drum 2 has a high-speed option. This option does
not increase line pull – only speed. High-speed is
approximately 80% faster than standard speed
(depending on load and layer).
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