FIGURE 4-56
Boom Butt Wire
Rope Guide
Boom Top Wire
Rope Guide
A or L -
F or A -
F, R , o r L -
F or A -
Fixed Jib Strut
Wire Rope Guide
18 ft (5,5 m) Insert
Wire Rope Guides
R -
F -
Item Description
F Front Drum (Drum 1)
R Rear Drum (Drum 2)
A or L Auxiliary Drum or Luffing Hoist (Drum 3)
Auxiliary drum is faster than front drum, but it has less
line pull than front drum
All Views from Right Side of Crane
Boom Top Wire Rope Guide Sheave Positions
Sheave Position Rope Routing
Centered on shaft with two clamp assemblies (1)
Requires one clamp assembly (2)
Rope from F or A drum to upper boom point, fixed
jib point, luffing jib point, or lower boom point S4
At dimension given with two clamp assemblies (1)
Rope from F or A drum to upper boom point, fixed
jib point, luffing jib point, or lower boom point S5
Flush against left side of frame with one clamp
assembly (1)
Rope from F or R drum to lower boom point
sheave S6 or to luffing jib point
Flush against left side of frame with one clamp
assembly (1)
Rope from F or R drum to lower boom point
sheave S6
At dimension given with two clamp assemblies (1)
Rope from F or R drum to lower boom point
sheave S5
Flush against right side of frame with one clamp
assembly (1). Requires one clamp assembly (2)
Rope from L drum to luffing jib main strut or rope
from F or R drum to lower boom point sheave S2
Flush against right side of frame with one clamp
assembly (1). Requires one clamp assembly (2)
Rope from L drum for auxiliary line
A2
B1
A1
C
D
14COM4173
14COM4174
14COM4175
14COM4176
E
B2