TM 5-3820-241-34
Legend for Fig. 5-14:
1 Feed chain assembly
2 Roller line
3 Connecting link
4 Off-set link
5 Lubrication fitting
6 Lubrication fitting
7 Lubrication fitting
8 Spring pin
9 P i n
10 Plain hex nut
11 Adjusting yoke
12 Spring pin
13 Pin
14 Plain hex nut
15 Lockwasher
16 Flex head capscrew
17 Bushing
18 Sprocket
19 Snap ring
20 Oil seal
21 Bearing
22 Snap ring
23 Connector
21 Hex head capscrew
25 Self locking nut
26 Machine bolt
27 Spring
28 Bushing
29 Centralizer half
30 Centralizer half
31 Bushing
32 Plain hex nut
33 Lockwasher
34 Machine bolt
35 Plain hex nut
36 Lockwasher
37 Hex head capscrew
38 Manifold
39 Plain hex nut
40 Lockwasher
41 Hex head capscrew
42 Bracket
43 Hex head capscrew
44 Hex head capscrew
5-19. Feed and Feed Chain, Cleaning, Inspection
and Repair
a. Cleaning. Clean all parts in cleaning solvent
(FED SPEC PD 680) and dry thoroughly.
b. Inspection and Repair.
(1) Inspect
the chain and chain drive
sprockets for cracks, breaks or excessive wear.
(2) Inspect all bushings and bearings for
rough spots or excessive wear.
(3) Inspect
all hardware
for damaged
threads. Replace defective hardware.
(4) Repair by replacement of defective parts.
5-20. Feed and Feed Chain, Reassembly and
Installation
a. Reassembly.
(1) Reassemble the feed
and feed chain
mechanism in the reverse of numerical sequence
as illustrated in figure 5-14.
(2) Install the feed transmission (para 5-8).
(3) Install the drifter drill engine (para 5-12).
(4) Refer to TM 5-3820-241-12 and install the
rock drill feed assembly, centralizer and the feed
control valve.
(5) Refer to LO 5-3820-241-12 and service
the rock drill.
5-21. Boom Pivot Mechanism, Removal and
Disassembly
a. Removal.
(1) Refer to TM 5-3820-241-12 and remove
the rock drill feed assembly.
(2) Remove the feed tilt cylinder (para 3-2).
(3) Remove the boom lift cylinder (para 3-5).
(4) Remove the feed swing cylinder (para 3.
8).
(5) Remove the boom swing cylinder (para 3-
11).
(6) Remove the feed extension cylinder (para
3-14).
(7) Remove
the
tilt
and
swing
boom
assembly (para 2-11).
b. Disassembly.
(1) Disassemble the boom tilt and swing
mechanism in numerical sequence as illustrated in
figure 5-15.
5-21
