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 TM 9-1240-375-34&P
0066 00
INSTALLATION
8
10
6
1
9
1
3
3
7
5
2
2
6
5
4
4
M 171
M 171A 1
1 fc 3 3 7
1.
Place optical instrument support (1) on bearing housing assembly (2).
2.
Align hole (3) in optical instrument support (1) with hole (4) in bearing housing assembly (2).
3.
Install plain tapered pin (5) (M171 only).
4.
Install two plain tapered pins (5) (M171A1 only).
WARNING
Use sealing compound in well-ventilated area away from open flame. Sealing
compound is harmful to skin and clothing and may give off harmful vapor. Exercise
care whenever sealing compound is used.
5.
Apply sealing compound (item 13, WP 0152 00) to threads of setscrew (6) (M171A1 only).
6.
Install setscrew (6) to align optical instrument support (1) (M171A1 only).
7.
If removed or missing, install straight pin (7) (M171A1 only).
8.
Apply sealing compound (item 13, WP 0152 00) to threads of hexagon capscrew (8) (M171 only).
9.
Install new lockwasher (9) (item 5, WP 0118 00) and hexagon capscrew (8) and tighten (M171 only).
10.
Install new lock wire (10) (item 22, WP 0152 00) (M171 only).
END OF WORK PACKAGE
0066 00-3/4 blank
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