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TM 9-1240-375-34&P
DIRECT SUPPORT
M137/M137A2/M137A3 PANORAMIC TELESCOPE
(1240-01-038-0531/1240-01-483-6103/1240-01-483-6100)
COUNTER BOX ASSEMBLY MAINTENANCE
DISASSEMBLY, CLEANING, REPAIR OR REPLACEMENT, ASSEMBLY
INITIAL SETUP:
Tools and Special Tools
Shop Set, Instrument and Fire Control: Field Maintenance, Basic Less Power (SC 4931-95-A07)
Tool Kit, Electronic System Maintenance (SC 5180-95-B29)
Materials/Parts
Adhesive (item 2, WP 0152 00)
Lockwasher (4) (item 15, WP 0141 00)
Lockwasher (2) (item 33, WP 0141 00)
Lockwasher (2) (item 36, WP 0141 00)
Lockwasher (5) (item 42, WP 0141 00)
Sealing compound (item 13, WP 0152 00)
Soap (item 19, WP 0152 00)
References
TM 9-254
Equipment Conditions
Counter box assembly partially disassembled (WP 0084 00)
DISASSEMBLY
WARNING
TRITIUM
GAS (H3)
When maintaining radioactively illuminated fire control equipment, follow radiation
hazard procedures in warning summary (M137 only).
NOTE
Charge nitrogen pressure to 7 psi (0.49 kg/cm2). Remove hose. Put soap suds (item
19, WP 0152 00) on valve opening to check for leakage. If valve leaks, replace valve
stem and/or valve core.
0090 00-1

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