drop hammer and secure with cable clamps.
(j) Raise boom until pile leads are above
drop hammer; position pile leads so that hammer guides
inside pile leads will enter grooves in hammer sides,
then lower pile leads.
(k) Raise drop hammer up into pile leads.
(I) Install catwalk at boom foot, then at pile
leads (fig. 2-14), and secure with bolts, lockwashers and
nuts.
(2) Removal. Remove piledriver front end
attachment by reversing steps (a) through (1) above and
revert to crane operation.
e. Backhoe Front End Attachment. Items required
for backhoe operations are: auxiliary gantry; boom;
backhoe stick; pitch brace; dipper; backhoe lagging, and
cables. Convert as follows:
(1) Installation.
(a) Remove crane boom (para 4-13) and
crane lagging (para 3-131).
Note. Removal of lagging above, and
installation of lagging below, will be accomplished by
organizational maintenance personnel.
(b) Install backhoe lagging (para 4-12).
(c) Move crane-shovel into position (fig.
Secure with cotterpins.
(d) Install auxiliary gantry and secure with
gantry pins.
(e) Install backhoe digging cable (table
Figure 2-7. Crane boom and jib boom reeving diagram
(sheet 2 of 2).
sheaves (view C) to dead end socket, and secure end
with cable clamps.
socket, and rewind on cable drum slowly while guiding
(f) Install boom hoist cable (table 1-2)
cable through sheaves.
and reeve as shown in view A of figure 2-16. Connect
(c) Remove boom hoist cable from drum
in dead end socket and secure with cable clamps.
and replace with pile driver boom hoist cable (table 1-2).
(g) Install hoist cable (table 1-2) and
(d) Separate boom point section from
reeve as shown in view B of figure 2-16. Connect in
base section (para 4-18) and install center (extension)
dead end socket and secure with cable clamps.
section as shown in figure 2-11.
(h) Raise gantry, insure that pitch brace is
(e) Reeve boom hoist cable (view A, fig.
properly installed (para 4-29b), then remove backhoe
front end attachment from cribbing.
proper clamps.
(2) Removal.
(f) With 60 foot boom installed, remove
(a) Extend backhoe dipper and build
crane hoist cable from right hand drum and install pile
cribbing under boom foot (fig. 2-15).
cable (table 1-2) and reeve as shown in figure 2-18.
(b) Position blocking between boom and
Make loop and secure with cable clamps.
backhoe stick.
(g) Position piledriver adapters and
(c) Build cribbing under boom point, then
spacers on boom point pin (fig. 2-14).
lower boom to cribbing so that dipper rests on ground
(h) Install bolts and nuts securing
and boom is horizontal.
adapters to pile leads.
(d) Remove clamps from cable at dead
(i) Remove cable from left hand drum
end socket (view A, fig. 2-16), then slowly rewind cable
and install drop hammer cable (table 1-2) and reeve as
on drum as it is carefully guided through the sheaves.
shown on figure 2-18, over boom point sheave, down
through pile leads, then connect at dead end socket at
2-9
