TM 5-3810-207-20/TO 36C23-3-37-12
B-Dipper trip assembly, exploded view
Figure 90-Continued.
Section II. CRANE, DRAGLINE, OR CLAMSHELL BOOM
166.
General
The boom for crane, dragline, and clamshell
operations is the same. The lower boom section is
connected by two boom footpins to the revolving frame.
The upper boom section carries the boom point sheave
assembly. A 10-foot center section can be used to
extend the length of the boom. The boom is of welded
construction.
167.
Crane Boom
a.
Removal.
(1)
Remove all reeving from the crane boom
(TM 5-3810-207-10).
(2)
Remove
the
crane
boom
from
the
revolving frame (TM 5-3810-207-10).
b.
Disassembly. Disassemble the crane boom as
instructed on figure 91.
c.
Cleaning, Inspection, and Repair.
(1)
Clean all parts of the crane boom with an
approved cleaning solvent.
(2)
Inspect the crane boom for broken welds,
bends, and other damage. Repair or
replace the crane boom as necessary.
(3)
Inspect the boom point sheaves and
rollers and all other parts for breaks,
excessive
wear,
and
other
damage.
Repair or replace all defective parts as
necessary.
d.
Reassembly. Reassemble the crane boom as
illustrated on figure 91.
e.
installation.
(1)
Install the crane boom on the revolving
frame (TM 5-4810-207-10).
(2)
Install the reeving on the crane boom (TM
5-3810-207-10).
168.
Fair-Lead
a.
Removal. Remove the fair-lead from the foot
section of the crane boom (TM 5-3810-207-10).
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