Figure 2-7. Crane boom and jib boom reeving diagram (sheet 1 of 2).
lead, dragline bucket, dragline cable, and hoist cable.
(g) Reeve drag (digging) cable (fig. 2-12),
(1) Installation.
connect to dead end socket on dragline bucket, and
secure with cable clamps.
(a) Raise crane hook block to near boom
(h) Raise boom to normal operating
point sheave then lower crane boom to horizontal
position.
position (fig. 2-11).
(i) Raise dragline bucket from ground.
(b) Remove clamps from hoist cable at
(2) Removal.
Remove dragline front end
dead end socket (view C, or D, fig. 2-7); remove hook
attachment by reversing steps (a) through (i) above and
block, then Unwind and remove hoist cable from right
revert to crane operation.
hand drum. Remove cable from left hand drum.
d. Pile Driver Front End Attachment. For this
Note.
Organizational
maintenance
attachment, pile adapters; pile leads; cat-walk; drop
personnel will install lagging.
hammer; boom center (extension) section; boom hoist
(c) Install dragline lagging (para 3-181),
cable; hammer cable, and pile cable are required.
then install digging (drag) cable (table 1-2) on left hand
(1) Installation.
drum (fig. 2-12).
(a) Lift hook block to near boom point
(d) Install dragline hoist cable (table 1-2)
sheave then lower crane boom to horizontal position on
on right hand drum.
cribbing (fig. 2-6); remove clamps from hoist cable at
(e) Install fair lead (para 4-16).
dead end socket (view C, fig. 2-7); remove hook block,
(f) Position dragline bucket under boom
and wind hoist cable or drum.
point; reeve dragline hoist cable (fig. 2-12), then connect
(b) Loosen tension on boom hoist cable
at dead end socket on dragline bucket bridle and secure
(view A, fig. 2-7), remove cable end from dead end
with cable clamps.
2-8
