Figure 2-3. Front end attachments loaded and
(a) Raise hook block to near boom
blocked for shipment (sheet 2 of 2).
point sheave, then lower crane boom to horizontal
ments are available for conversion into backhoe,
clamshell, dragline, piledriver, and shovel front
(b) Remove clamps from hoist cable at
operating units. The conversion instructions below will
dead end socket (view C, fig. 27); remove hook block,
assume that basic unit has been in operation as a crane,
then remove hoist cable from drum. Remove cable
and will list the different components required for
from right hand drum if necessary.
converting to new front end attachment.
Crane boom of 50 foot length,
personnel will remove, or install, all
without center section, or jib boom.
b. Clamshell Front End Attachment.
attachment requires clamshell lagging, tagline winder,
and install clamshell lagging, then wind holding cable on
closing and holding cables, and clamshell bucket
right hand drum, and closing cable on left hand drum.
Refer to table 1-2 for size and length of cables.