bly into a bank or tree, or another object, to damage
(17) One 1-pound charge against each corner
boom and break cables.
angle at midpoint of crane boom.
(5) Drop bolts, nuts, and tools into gear trains.
(18) One 6-pound charge at boom point
(6) Operate unit until failure occurs.
sheaves on crane.
(19) One 4-pound charge at dragline pins and
5-6. Demolition by Explosives or Weapons Fire
a 2-pound charge at hoist line pins of dragline bucket.
(20) One 4-pound charge on upper closing
sheaves and one 4pound charge at lower closing
sheaves and hinges of clamshell bucket.
following charges as the situation permits, and detonate
them simultaneously with detonating cord and a suitable
(21) Three 4-pound charges along piledriver
detonator.
leads.
(1) One 4-pound charge on engine drive
(22) One 6-pound charge in propelling gear oil
sprocket and jackshaft sprocket.
pan.
(2) One 4pound charge against the main
(23) One 4-pound charge on each of the
clutch and machinery side frame castings at each end of
crawler tracks at crawler drive sprocket.
main drum shaft.
(24) One 4pound charge on each chain drive
(3) One 4-pound charge against boom hoist
sprockets on end of horizontal propelling shaft.
mechanism.
b. Demolition by Weapons Fire.
Fire on
(4) One 2-pound charge against each of the
craneshovel unit with the heaviest weapon available.
swing clutches on the jackshaft.
(5) One 4-pound charge in the jackshaft
5-7. Other Demolition Methods
bevel gear case.
(6) One 4-pound charge on top of the vertical
a. By Scattering and concealment. Remove all
propelling shaft.
easily accessible vital parts, such as fuel injectors,
(7) One 2-pound charge between starter and
hydraulic lines, control levers, brake and clutch
engine.
cylinders, starting motor, and hook rollers. Scatter these
parts through dense foliage; bury them in dirt or sand, or
(8) One 4-pound charge at each of the boom
throw them in lake, stream, well, or other body of water.
hinges.
b. Burning. Pack rags, clothing or canvas under
(9) One 4-pound charge against each of the
and around unit, particularly around engine, clutches,
hook rollers.
brakes, and fuel tanks saturate this packing with
(10) One 4-pound charge against side of
gasoline, oil or diesel fuel and ignite it.
engine.
c. Submersion. Totally submerge the craneshovel
Note.
unit in a body of deep water to provide water damage
The above charges are considered
and concealment. (Salt water does most damage to
minimum requirements for this
metal parts).
method.
(11) One 8-pound charge on shipper shaft of
5-8. Training
shovel boom.
(12) One 8-pound charge on dipper handle-
All operator's should receive thorough training in
bucket connection.
methods of destroying the crane-shovel unit. Refer to
(13) One 1-pound charge on each of boom
FM 5-25. Simulated destruction, using methods listed
hoist sheaves.
above, should be included in operator training programs.
(14) One 8-pound charge at bucket-dipper
It must be emphasized in training that demolition
stick connection of backhoe attachment.
operations are only necessitated by critical situations,
when time available for destruction is limited. For this
(15) One 4-pound charge at stick point, and
reason, it is necessary that operators be thoroughly
another at stick pivot of backhoe attachment.
familiar with all methods of destruction and be able to
(16) One 6-pound charge against auxiliary
perform demolition without refering to this or any other
gantry of backhoe attachment.
manual.
5-2
