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 95 of 590
3-37
10 If removed, install two springs (24) and two shoul-
dered pins (23) in rear housing (14). Secure in
place with two flat washers (22) and two new cotter
pins (21),
11 Install seal (18) on eyepiece arm (3) with brass ring
of seal facing away from new shim (19).
12
Install protective cup (20), shim (19), and seal (18)
on eyepiece arm (3).
13 Install spring washer (17) and shuttle (16) over cell
housing (32) and onto eyepiece arm (3).
14 Install arm ratchet (15) over cell housing (32) and
engage with shuttle (16).
15 Apply grease (item 6, appx B) to unthreaded sec-
tion of cell housing (32).
16 Install rear housing (14) over cell housing (32) so
that arm ratchet (15) engages with housing.
17 Install ring spacer (13) and nut (12) on threaded
section of cell housing (32).
18 Install cap screw (11) in nut (12).
19 Install prism cover (7) on eyepiece arm (3) being
careful not to damage optical instrument prism.
20 Install six new Iockwashers (6) and six machine
screws (5).
21 If removed, install three setscrews (8).
22 Install setscrews (9 and 10). Do not tighten.
23 Apply grease (item 7, appx B) to new preformed
packing (4) and install on cell assembly (2).
24 Using 2-9/16 and 2–37/64 inch tubular spanner
wrench, install cell assembly (2) in eyepiece arm
(3) until seated.
25 Back out cell assembly (2) two complete turns.
TM 9-1240-401-34&P
26 Install two setscrews (1) in eyepiece arm (3) to se-
cure cell assembly (2).
Back to Top
