MIL-DTL-52649C
3.4 Materials. Materials shall be as specified herein. Materials not specified shall be selected by the
contractor, and shall be subject to all provisions of this specification. Mounting frames and metering
devices shall be made from corrosion-resistant metals, nylon, or steel, zinc-coated in accordance with
ASTM B633, Fe/Zn 25 SC 4, type VI. The remote control cables, when applicable, shall be of austenitic
stainless steel or lubricated and encased in plastic sleeves.
3.4.1 Material deterioration prevention and control. The primer equipment shall be fabricated from
compatible materials, inherently corrosion resistant or treated to provide protection against the various
forms of corrosion and deterioration that may be encountered in any of the applicable operating and
storage environments to which the primer equipment may be exposed.
3.4.2 Identification of materials and finishes. The contractor shall identify the specific material,
material finish or treatment for use with component and subcomponent, and shall make information
available upon request to the contracting officer or designated representative.
3.4.3 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or
environmentally preferable materials shall be used to the maximum extent possible provided that the
material meets operational and maintenance requirements, and promotes economically advantageous life
cycle costs.
3.5 Design and construction.
3.5.1 Size 2. Size 2 primer shall deliver 2.5 ± 0.5 cc of primer fuel at the atomizer during on
operation cycle.
3.5.2 Size 4. Size 4 primer shall deliver 4 ± 0.5 cc of primer fuel at the atomizer during one operation
cycle.
3.5.3 Size 5. Size 5 primer shall deliver 5 ± 0.5 cc of primer fuel at the atomizer during one operation
cycle.
3.5.4 Size 6. Size 6 primer shall deliver 6 ± 0.5 cc of primer fuel at the atomizer during one operation
cycle.
3.5.5 Size 12 . Size 12 primer shall deliver 12 ± 1.0 cc of primer fuel at the atomizer during one
operation cycle.
3.5.6 Type III gas propellant priming equipment. Type III primer equipment shall be as follows:
a.
Utilize an 18 ounce cylinder in accordance with MS39254 charged with
engine primer fuel with propellant as specified in O-F-1044, type III.
b.
The primer equipment shall be attached to the primer container by screw
threads in accordance with FED-STD-H28 and a rubber gasket in
accordance with ASTM D2000 class M3BG614C12EO34F19, shall be
provided for a leak-free connection.
c.
The primer equipment mounting shall fix and support the fuel container
vertically and shall prohibit movement horizontally. The mount shall hold
the container by friction, over-center type, or screw-type clamping device.
d.
The clamping device shall permit changing of the fuel container by an
operator wearing arctic-mittens.
e.
Control shall be by mechanical or electro-mechanical linkage. The
metering device shall be double acting.
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