OPTICAL INSTRUMENT SUPPORT MAINTENANCE -820360359

TM 9-1240-375-34&P

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GENERAL SUPPORT

M171/M171A1 TELESCOPE AND QUADRANT MOUNT

(1240-01-039-7273/1240-01-515-8265)

OPTICAL INSTRUMENT SUPPORT MAINTENANCE

REMOVAL, REPAIR OR REPLACEMENT, INSTALLATION

INITIAL SETUP:

Tools and Special Tools

Tool Kit, Electronic System Maintenance (SC 5180-95-B29)

Materials/Parts

Lockwasher (item 5, WP 0118 00)

Lock wire (item 22, WP 0152 00)

Sealing compound (item 13, WP 0152 00)

References

WP 0121 00

Equipment Conditions

M171/M171A1 mount removed from M198/M777 howitzer (TM 9-1025-211-34/TM 9-1025-215-25&P

REMOVAL

WARNING

RADIATION

TRITIUM

GAS (H3)

When maintaining radioactively illuminated fire control equipment, follow radiation

hazard procedures in warning summary.

WARNING

When maintaining battery illuminated fire control equipment follow battery

warnings in warning summary.

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