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 208 of 590
TM 9-1240-401-34&P
5-20. CELL ASSEMBLY MAINTENANCE INSTRUCTIONS
This task covers:
a. Disassembly b. Repair
c. Assembly
Condition
T-UP
Tools
Tool Kit, Electronic System, Repair, Field Mainte-
nance (SC5180-95-CL-B29)
TM 9-254
Tubular spanner wrench, 1 and 1-1/64 inch
(Item 27, appx F)
Tubular spanner wrench, 1-3/32 and 1-7/64 inch
(Item 28, appx F)
.
Materials/Parts
Sealing compound (Item 13, appx B)
M117/M117A2 panoramic telescope removed
from howitzer (TM 9-2350-311-10/
TM 9-2350-314-10)
Cell assembly removed from elbow assembly
(ref. para 5-19)
a. Disassembly
I
1
2
3
Using 1-3/32 and 1-7/64 inch tubular spanner
wrench (item 28, appx F), remove threaded ring (1)
from cell (2).
Using 1 and 1-1/64 inch tubular spanner wrench
(item 27, appx F), remove threaded ring (3) from
cell (2).
Remove lens (4), spacer (5), and lens (6) from cell
(2). Mark lenses (4 and 6) for reference during
assembly (ref. TM 9-254).
I b. Repair
I
1
Remove corrosion, grease, and dirt from all parts.
Refer to TM 9-254 for cleaning instructions.
2
Visually inspect for missing or damaged parts.
3
Repair or replace parts in accordance with author-
ized parts listed in appendix D.
5-34
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