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Figure 3-1. Gun Block Alignment
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TM-9-4931-583-30-P Boresight Kit T-102300-101 (
Next
Repair of Alignment Mounting Frame Assembly
TM 9-4931-583-30&P
e. Repair of Upper Frame Assembly. Refer
(c) Install three setscrews (2) and nuts (1)
to figure C-7 for breakdown and parts
through mounting pad until setscrews contact
identification numbers unless otherwise
plate assembly. Setscrews will be adjusted during
indicated.
boresight self-alignment.
(d) Install two setscrews (2) and nuts (1)
(1) Remove frame assembly (19, figure 1-1)
through plates of mounting pad and center plate
from boresight assembly. Refer to boresight
assembly tang between plates.
assembly disassembly, paragraph 2-5.
(e) Using three bolts (6 and 7) and
(2) Repair dents as listed in paragraph b.(2)
w a s h e r s (8) fasten block assembly to plate
above.
assembly. Ensure that long bolt (6) goes in position
shown in figure C-7.
(3) Disassemble alignment assembly as
required to replace failed part. Refer to figure C-7
(f) Install upper frame assembly on
boresight assembly and self-align per alignment
for breakdown and parts identification numbers
instructions.
unless otherwise indicated.
f . Repair of Alignment Mounting Frame
(a) Remove three bolts (6 and 7) and
Assembly.
washers (8) and remove block assembly (9).
(1) Remove mounting frame (1, figure 1-1)
(b) Remove five setscrews (2) and
from boresight assembly. Refer to boresight
nuts (1).
disassembly instructions.
(c) Remove bolt (3) and two washers (4
(2) Dents.
and 5) and remove plate assembly.
(a) Using scouring pads, remove paint from
dent and surrounding area.
(4) Inspect each part. Any discrepancy,
except cleanliness, is cause for replacement.
(b) Replace part if cracked.
(a)
Warped or bent.
(c) If dented only, paint cleaned area with
polyamide epoxy primer.
Damage.
(b)
(3) Disassemble mounting frame assembly
Loose or missing parts.
(c)
(1) as required to replace failed part. Refer to figure
C - 8 for breakdown and parts identification
(d) Threaded items for thread damage.
numbers.
Plate bearing for serviceability.
(e)
(a) Remove knob (12), washer (13) and pull
clamp assembly (14) from frame.
Clean, if required, per paragraph 2-9.a.
(f)
(b) Remove retainer plate (18) from each
(5) Assemble alignment assembly. Refer to
side of frame by removing two screws (15) and
figure C-7 for breakdown and parts identification
washers (17) from each plate.
numbers.
(c) Remove two nuts (26), washer (27), and
teflon washer (28) from each upper slider stud (32 and
(a) Position plate assembly in position on
37). Remove frame assembly (39) from the two studs.
m o u n t i n g pad with tang of plate assembly
Remove one teflon washer (28) from studs (32 and 37).
between plates of mounting pad.
(b) Position washers (4 and 5) on bolt (3) with
(d) Three sliders (21) are mounted on the
washer (4) next to bolt head. Insert bolt through plain
frame (39). All are removed in the same manner.
bearing (14) and tighten.
3-4

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