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 90 of 590
TM 9-1240-401-34&P
3-21. M218A2/M1 18A3 ELBOW TELESCOPE MAINTENANCE INSTRUCTIONS
This task covers:
a. Disassembly b. Repair c. Assembly
Tools
Lockwashers (4) (Item 77, appx E)
Preformed packing (Item 36, appx E)
Tool Kit, Electronic System, Repair, Field Mainte-
Tissue (Item 11, appx B)
nance (SC5180-95-CL-B29)
TM 9-254
Grease (Item 7, appx B)
Nut, self-locking (Item 11, appx E)
Lockwasher (Item 67, appx E)
M118A2/M118A3 elbow telescope removed from
Lockwashers (4) (Item 71, appx E)
howitzer (TM 9-2350-311-10)
a. Disassembly
1
2
3
4
5
6
7
Remove self-locking nut (1) and machine screw
(2). Discard self-locking nut.
Remove loop clamp (3) and eyeshield (4) from
eyepiece and erector lens subassembly (5).
Remove four cap screws (6) and four Iockwashers
(7). Discard Iockwashers. Carefully separate eye-
piece and erector lens subassembly (5) from reticle
cage and cant corrector subassembly (8).
Remove machine screw (9) and Iockwasher (10)
from connector plug (11) and unplug wiring har-
ness from connector on eyepiece and erector lens
subassembly (5). Discard Iockwasher.
Protect both ends of eyepiece and erector lens
subassembly (5) with several thicknesses of tissue
to prevent damage (ref. TM 9-254).
Remove four cap screws (12), four Iockwashers
(13), and two clamp rings (14). Discard lock-
washers.
Remove objective and diaphragm subassembly
(15) from reticle cage and cant corrector subas-
sembly (8).
3-32
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