TM-9-1240-401-34-P
TELESCOPE MOUNT M146: M118A2 AND M118A3; TELESCOPE MOUNT M145: M145A1; PANORAMIC TELESCOPE: M117 AND M117A2; FIRE CONTROL QUADRANT: M15; PERISCOPE: M42
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
JULY 1993
TM-9-1240-401-34-P - Page 71 of 590
TM 9-1240-401-34&P
8 Position variable resistor housing (29) on rear
housing (31) and secure with six new lockwashers
(28) and six machine screws (27).
9 Install retaining strap (26) on purging valve stem
(25).
10 Apply sealing compound to threads of purging
valve stem (25) and install in eyepiece arm (6).
11 Install valve core (24) in purging valve stem (25).
12 Attach air valve cap (23) to the end of retaining
strap (26) and thread air valve cap (23) onto purg-
ing valve stem (25).
13 If removed, apply sealing compound to threads of
plug (22) and install in eyepiece arm (6).
14 Install limit plate (21) and secure with two new
Iockwashers (20) and two cap screws (19).
15 Apply grease (item 6, appx B) to shaft of bellows
assembly (10). Screw bellows assembly (10) into
tube (16).
16 Install tube (16) in unthreaded end of bracket (13).
17 Apply grease (item 7, appx B) to the threads of
threaded ring (12) and install into bracket (13).
18 Apply grease (item 7, appx B) to new preformed
packing (18) and install on bellows assembly (10).
19 Position bracket (13) over two headless straight
pins (17) and install bellows assembly (10) in hole
on eyepiece arm (6).
20 Secure bracket (13) in place with two new lock-
washers (15) and two machine screws (14).
21 Install helical spring (11), lever spool (8), and ta-
pered pin (9).
22 Install two setscrews (7).
3-13
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