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 87 of 590
TM 9-1240-401-34&P
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If headless straight pin (21) was removed, redrill
using No. 54 (.055) drill; ream for drive fit in mount
(9). End on headless straight pin (21) must pro-
trude far enough into hole in mount (9) to engage
slot in end of level (16) when installed.
Install level (16), making sure that slot in end of
level engages headless straight pin (21).
Install cam (15), holder (14), and threaded ring (13)
in front of level (16). Do not tighten threaded ring
(13) until adjustment of level (16) has been com-
pleted (ref. p 3-30).
Apply sealing compound (Item 13, appx B) to
mount (9); then install sleeve spacer (12).
Apply sealing compound (Item 13, appx B) under
rim of telescope subassembly (11) and install into
mount (9) with windows alined.
Apply sealing compound (item 15, appx B) to out-
side threads of holder (10).
Install holder (10) in mount (9), keeping windows of
telescope subassembly (11) and mount (9) alined.
Install incandescent lamp (8) in holder (10).
Apply sealing compound (item 13, appx B) to
threads of two cap screws (22). Install light conduc-
tor (23) and secure with two cap screws (22).
If headless straight pins (20) were removed, redrill
using a No. 54 (0.055) drill; drill 0.450 inch (11.43
mm) deep. Ream for drive fit in mount (9) and slip
fit in mirror (19). Install mirror (19) over headless
straight pins and secure with two new Iockwashers
(18) and two cap screws (17).
Apply adhesive to groove on bottom of mount (9)
and to one side of new preformed packing (27).
Install preformed packing (27) in groove.
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