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Mustang Survival MSV971 Life Preserver and Survival Vest
Description and Maintenance Instructions
9 June 2004, Rev: 1.0
d. Hang the inflatable cell for six hours in an area where the ambient temperature can be
maintained at a constant 22°C (72°F).
e. The cell chamber is serviceable if, after the six-hour period, the internal pressure in
either chamber did not drop below 1.5 psi (corrected for temperature, if necessary).
Otherwise the cell is condemned and non-repairable.
NOTE: Both chambers must be serviceable before the inflatable cell is to be
considered usable.
f. Evacuate the tested cell chamber completely of all residual air and repeat steps (a)
through (e) for the other cell chamber
g. If there is evidence of leakage in any of the valves, replace the suspect valve and repeat
steps (b) through (f).
5.8 CO
2
INFLATION DEVICE TEST
5.8.1
5.9.1
5.9.2
To test the inflation device, and perform the following:
a. Remove the CO
2
cylinder.
b. Ensure the cylinder seat-sealing gasket is in place.
c. Pull the beaded inflation handle and rotate the operating lever several times to ensure a
smooth, free operation.
d. Check that there is a minimum of a 3.0 mm protrusion of the piercing pin. This is
required to ensure that the piercing pin will pierce the CO
2
cylinder-sealing disc when the
inflator valve is in the operated/activated position. If the protrusion is less than 3 mm, the
device must be replaced.
e. Return the operating lever to the non-operated "ready" position.
h. Replace the CO
2
cylinder.
5.9 CO
2
CYLINDER INSPECTION AND WEIGHT TEST
All carbon dioxide (CO
2
) cylinders should be weighed and inspected regardless of whether
they are new, or previously fitted cylinders that appear to be serviceable.
To inspect the cylinder, perform the following:
a. Weigh the cylinder with a scale, which is accurate to 0.1 gram. The measured weight
should not be lower than the gross weight stencilled on the cylinder. Cylinders not
meeting the gross weight specifications should be retained only for training or test
purposes and must be clearly marked "NOT FOR SERVICE USE".
b. Inspect the cylinder threads for damage, the cylinder surface for nicks, dents or
ballooning and the cylinder neck-sealing disc for scratches or punctures. Cylinders
showing any damage should have the gas released under control and then are disposed
of as scrap.
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