Equipment and Tools
Fabricating hose assemblies is a function of
intermediate- and depot-level maintenance. The
intermediate and depot shops are equipped with hose
fabricating machines (fig. 10-7) and proof-test
equipment. Each machine or equipment is supplied
with operating instructions.
The basic hand tools that are required to fabricate
hose assemblies up to 3,000 psi operating pressure are a
bench vise, a hose cutoff machine, open end wrench
sets, a sharp knife, slip joint pliers, an oil can for
lubricating oil, a marking pencil, a small paint brush,
masking or plastic electrical tape, a steel ruler, a
thickness gauge (leaf type), and a protractor.
Mandrels are special hand tools (fig. 10-8) that are
not required but are recommended for fabricating hose
assemblies. During hose assembly fabrication,
mandrels can be used to protect sealing surfaces,
support inner tubes, and guide fitting nipples into
Figure 10-7.--Hose fabricating machines.
Figure 10-8.--Mandrel kits.