SECTION III
OPERATING INSTRUCTIONS
front rim of the container to the eduction tube outlet that
14. General
holds the faulty valve as follows:
This section contains instructions for operating the
(1) Hold the container gage (3, fig. 12) with the
M1 valve replacement mechanism under normal
flat sides of the structural steel angles
conditions of climate and service. Normal conditions
against the front rim of the container.
are considered to be operational in warm weather (50
F. and above).
(2) Move the container gage until the sight block
(4) is opposite the edge of the eduction tube
a. Personnel.
An operator and an assistant
holding the faulty valve.
operator are required to install and operate the M1 valve
replacement mechanism.
(3) Insert the square end of the depth rod (2)
through the sight block until it touches the
b. Practice. Operating personnel should practice
head of the container next to the eduction
replacing a valve on a container filled with compressed
tube outlet. If there is a boss (raised portion)
air before using the M1 valve replacement mechanism
around the eduction tube outlet, the end of
to replace a faulty valve on a filled one-ton container.
the depth rod should touch the boss.
c. Preparation.
(4) Check that the outer edge of the sight block
comes between the MAX and MIN ends of
Warning.
the beveled notch in the depth rod. If the
Field
protective
masks
and
edge of the sight block is outside the notch,
protective clothing (TM 3-304) must
the M1 valve replacement mechanism
be worn by all operating personnel.
cannot be used.
In addition, a decontaminating
apparatus should be standing by.
b. Gage the distance between the faulty valve and
the bonnet clip nearest to it. To do this, hold the
(1) Measure the pressure of the gas in the one-
clearance rod (1) against the front head of the container
ton container by connecting a pressure gage
with the concave end against the faulty valve. If there is
to the topmost valve.
no clearance, the M1 valve replacement mechanism
cannot be used.
(2) Vent the one-ton container to reduce internal
pressure or to relieve a vacuum as given in
16. Installing M1 Valve Replacement Mechanism
TM 3-4730-200-15.
a. Assemble the new valve to the new valve socket
(3) Lay the one-ton container on its side on a
(3, fig. 3) and screw the socket cap (1) to the new valve
support that will hold the front of the
socket using the two socket cap screws (2).
container at least six inches above the
surface on which the support is resting.
b. Unscrew the faulty valve one-quarter turn with an
M2 valve removing wrench. This frees the valve in the
(4) Roll the container until the two valves are
eduction tube outlet, making it easier to operate the M1
alined vertically, with the faulty valve on top.
replacement mechanism. If there is leakage around the
valve threads, screw the valve in until the leakage
(5) Chock the container to prevent rolling.
stops.
15. Container Gage Assembly
a. Measure the perpendicular distance from the
TAGO 5013-A 13
