Screw the nipple into the socket and hose using a wrench on the
nipple hex nut.
The nut must swivel freely when the assembly
tool is removed.
After the fabrication process is completed, inspect
the hose
assembly externally for cuts or bulges of the inner liner.
The final
step of any hose fabrication process is to proof-test
the hose
assembly to insure its pressure capabilities. This step is
discussed
in the paragraph on testing hose assemblies.
Fabricating High-Pressure Rubber Hose Assemblies.
High-pressure
rubber hose assemblies MS 28759 an MS 28762, are fabricated from
high-pressure bulk hose conforming to military specifications MIL-H-
8788 or MIL-H-8790, and fittings conforming to military standard MS
28760 or MS 28761.
The fabrication techniques and tools for assembling high-pressure
hose are the same as those outlined for medium-pressure hose
fabrication.
CAUTION:
DO NOT REUSE HIGH-PRESSURE HOSE OR HIGH-
PRESSURE
HOSE
FITTINGS.
ALSO,
NEVER
REINSTALL A FITTING ON THE SAME AREA OF HOSE
WHERE IT WAS FIRST INSTALLED.
IF AN ERROR
IS MADE DURING ASSEMBLY, CUT AWAY THE OLD
AREA OR USE A NEW LENGTH OF HOSE AND
REINSTALL THE FITTING.
Fabricating Medium-Pressure Teflon Hose Assemblies.
Medium-
pressure teflon hose assemblies are manufactured to the requirements
of military specification MIL-H-25579 from bulk hose conforming to
military specification MIL-H-27267 and end-fittings conforming to
military specification MIL-F-27272.
All field-fabricated teflon hose assemblies must be identified by
aluminum-alloy tags, NSN 9535-00-232-7600.
The composition and dimensions of these tags are found on chapter
4 of TM 1-1520-204-23-2. The tags are marked to show the federal or
national stock number or part number, depot or unit code, operating
pressure, and date of pressure test.
The steps to be followed when fabricating these hose assemblies
are described in TM 1-1500-204-23-2.
Fabricating High-Pressure Teflon Hose Assemblies.
High-pressure
teflon hose assemblies are manufactured from bulk hose conforming to
MIL-H-83298 and end fittings conforming to MIL-H-83296.
56
AL0907
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