TM-9-2350-311-34-1
HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS: HOWITZER, MEDIUM, SELF-PROPELLED, 155MM
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
SEPTEMBER 1994
TM-9-2350-311-34-1 - Page 21 of 352
TM 9-2350-311-34-1
1-8 WARRANTY INFORMATION
The Ml 09 Howitzer series is no longer warranted.
1-9 SAFETY, CARE, AND HANDLING
WARNING
Nuclear, Biological, and Chemical (NBC) agents can kill you. If NBC exposure is
suspected, all air filter media must be handled by personnel wearing full NBC-
protective equipment (FM 21-1 1).
WARNING
Ml 40 alinement device and Al Al collimator are illuminated by sealed, radioactive
sources of tritium gas
As long as these sources remain sealed, they do not emit
any harmful radiation. There is no limit on handling time. Radioactively illuminated
collimators are indicated by the radioactive sign shown above. If the seal is broken,
see below.
a. Refer to warning page inside front cover of manual.
b. Prior to purging or charging, make the following checks:
(1)
(2)
(3)
(4)
Lift cover assembly and check for cracks or loss of illumination.
Look through objective end of collimator and check for broken/cracked reticle and loss of
illumination. If reticle is intact, no cracks are observed, and collimator is illuminated,
proceed with maintenance actions.
If cracks are observed, but collimator is still illuminated, remove collimator scope and
notify the local Radiation Protection Officer (RPO). Seal collimator scope in a double
plastic bag (item 4, Appx B) and return it to depot for disposal.
If no illumination is observed, remove collimator scope and check for illumination in a dark
room. If a slight glow/haze appears, follow procedure in paragraph (3) above. If illumina-
tion still is not detected, notify local RPO. Return collimator scope to depot as follows for
disposal.
(a) Seal collimator scope in a double plastic bag (item 4, Appx B) and place in a strong,
tight container (such as a fiberboard box) (item 5, Appx B) with all seams secured
using tape (item 26, Appx B) (masking tape is not authorized).
(b) Label the container: CAUTION — BROKEN
SOURCE. DO NOT OPEN.
1-7
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