TM-9-2350-311-20-2
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS
DECEMBER 1993
TM-9-2350-311-20-2 - Page 7 of 828
TM 9–2350–311–20–2
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WARNING
•
Do not drop tank of compressed nitrogen gas. Do not tap nitrogen tank. Tank can explode when
tapped or dropped. When using in confined areas, use extreme care; gas could cause suffoca-
tion.
•
Make sure nitrogen cylinder contains dry nitrogen. Dry nitrogen tanks are marked with one or
two black bands. Certain other gases can cause accumulator to explode, resulting in possible
injury.
•
Failure to close check valve on main accumulator and pressure regulator valve could result in
injury from high pressure in hoses of nitrogen charging assembly and air pressure gage assem-
bly.
•
Failure to open safety-relief valve could result in injury from high pressure trapped in hoses of
nitrogen charging assembly and air pressure gage assembly.
•
Accumulator contains high pressure nitrogen. Use caution when handling and working with it.
•
High pressure gas is used in charging the accumulators and fire control equipment. Do not ex-
ceed recommended psi when charging these components. Keep face and body clear of release
valves. Failure to observe safety precautions may result in injury or death.
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