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Key
Component
Description
24
Roadside Cabinet
Houses volumetric meter, two dispensing assemblies, filter-separator
pressure gages, engine controls, fixed fire extinguisher system
portable fire extinguishers, and fuel-handling controls.
1
Service Air Coupling
Connects towing vehicle service air supply to semitrailer.
2
Drain Plug
When removed, allows water or spilled fuel to drain from top to o
semitrailer. Plugs must be installed at all times, except when washing
semitrailer.
3
Emergency Air Coupling
Connects towing vehicle emergency air supply to semitrailer.
4
Manhole Cover
Allows access to inside of tank. M131A4C is equipped with four,
M131A5C is equipped with two.
5
Catwalk
Nonskid surface on top of semitrailer.
6
Lights
Contain service, blackout, stoplight, and clearance marker lights on
early models and composite light and clearance marker lights on late
models.
TM 9-2330-272-14
1-7.
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS (Con’t).
M131A4C AND M131A5C ROADSIDE
TA702623
1-7
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