TM 5-3820-241-34
(1) Reassemble the boom components in the
Legend for Fig. 5-16:
reverse of numerical sequence as illustrated in
6
Pivot shaft
1 Lubrication fitting
7
Pivot pin
2 Lubrication f i t t i n g
8
RH boom
3 Pivot pin
( 2 ) Reassemble the boom tilt and swing
9
Support pivot
4 Spring pin
mechanism in the reverse of numerical sequence
10
Universal joint
5 Spring pin
as illustrated in figure 5-15.
5-22. Boom Pivot Mechanism Cleaning, In-
b. Installation.
spection and Repair
(1) Install the tilt and swing boom assembly
a. Cleaning. Clean all parts with cleaning
solvent (FED SPEC PD 680) and dry thoroughly.
(2) Install the feed extension cylinder (para
b. Inspection and Repair.
(1) Inspect the boom, boom supports joints,
(3) Install the boom swing cylinder (para 3-
arms and links for cracks breaks or other damage.
13).
(2) Inspect bushings at the pivot points for
(4) Install the feed swing cylinder (para 3-
excessive wear.
10).
( 3 ) Inspect the h a r d w a r e f o r d a m a g e d
(5) Install the boom lift cylinder (para 3-7).
threads.
(7) Refer to TM 5-3820-241-12 and install the
(4) Repair by replacement of defective parts.
rock drill feed assembly.
(8) Refer to LO 5-3820-241-12 and lubricate
5-23. Boom Pivot Mechanism, Reassembly and
the rock drill.
Installation
a. Reassembly.
5-25