TM 5-3820-239-15
(4) Remove the two retaining rings (3)
clamps (4) and drill guide extension
and dump pivot pin (4) securing the
cylinder mounting clamps (5) to the
dump arm of power dump and swing
complete drill mounting (7). Keep
assembly (5) to hydraulic boom as-
the clamp shims (6) with the respec-
sembly (6).
tive clamps to facilitate installation.
(5) Remove the complete power dump
b. Installation.
and swing assembly (5).
(1) See figure 5-1 and install the com-
plete drill mounting (7). Make sure
b. Installation.
that the clamp shims (6) are installed
dump and swing assembly to the hy-
in the same manner as removed.
draulic boom assembly.
(2) Connect the air piping from the mani-
(2) Connect the hydraulic lines to the
fold lubricator.
5-13. Power Guide Extension Mounting
5-15. Hydraulic Boom Assembly
a. Removal.
(1) Disconnect the hydraulic lines from
a. Removal.
the drill guide extension cylinder
(1) Disconnect the hydraulic lines from
the boom swing and boom lift cylin-
(2) Remove the four swivel cap bolts (1,
(3), and separate the two guide
and lock washers (3) securing king
mounting swivel caps (4) from the
pin locking plates (4) to boom base
guide mounting swivel of the power
assembly (6).
dump and swing assembly (6), free-
(3) Using a suitable hoist to support the
i n g t h e p o w e r guide extension
weight of hydraulic boom assembly
mounting (5).
(5), remove the cylinder pedestal
b. Installation.
king pins of the hydraulic boom as-
sembly from the mounting brackets
guide extension mounting on the
of the boom base assembly.
power dump and swing assembly.
b. Installation.
(2) Connect the hydraulic lines to the
drill guide extension cylinder (see
lic boom assembly.
(2) Connect the hydraulic lines to the
boom swing and boom lift cylinders
5-14. Power Dump and Swing Assembly
a. Removal.
(1) Disconnect the hydraulic lines from
the dump and swing cylinders (fig.
a. Removal.
Note. Although the boom base assembly is se-
(2) Remove the two retaining rings (1,
cured to the frame only by five sets of hardware, re-
moval is very time consuming because of the fact
the dump cylinder of power dump
that both the hydraulic pump assembly and the mani-
and swing assembly (5) to hydraulic
fold lubricator assembly are mounted to this base.
boom assembly (6).
This paragraph is written under the assumption
that both of these assemblies have already been re-
(3) Remove the two retaining rings (1)
moved as described in Chapter 3.
and dump pin (2) securing the dump
link of power dump and swing assem-
suitable container (minimum of 10-
bly (5) to hydraulic boom assembly
gallon capacity) under the hydraulic
(6).
5-3