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 68 of 590
TM 9-1240-401-34&P
3-13. EYEPIECE AND ERECTOR LENS SUBASSEMBLY MAINTENANCE INSTRUCTIONS
- continued
a. Disassembly
1
2
3
4
5
6
7
8
9
10
11
12
13
Remove retaining ring (1) and flat washer (2) from
manual control lever (3).
Remove two setscrews (4) from lock-release lever
(5).
Remove manual control lever (3) from lock-release
lever (5).
Remove lock-release lever (5) from eyepiece arm
(6).
Remove two setscrews (7).
Lever spool is under spring tension. Exercise
care when removing tapered pin which se-
cures lever spool.
Support lever spool (8) with a V-block and drive out
tapered pin (9) from bellows assembly (10).
Pull lever spool (8) and helical spring (11) from bel-
lows assembly (10).
Remove threaded ring (12) from bracket (13).
Remove two machine screws (14) and two lock-
washers (15) from bracket (13). Discard lock-
washers.
Unscrew bellows assembly (10) to disengage it
from eyepiece arm (6). Remove bracket (13) con-
taining tube (16) and bellows assembly (10) from
eyepiece arm (6).
Remove two headless straight pins (17) only if
damaged.
Carefully pull bellows assembly (10) through tube
(16). Remove tube (16) from bracket (13).
Remove preformed packing (18) from end of bel-
lows assembly (10). Discard preformed packing.
3-10
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