TM5-4220-231-14&P
4-39 High Pressure (HP) Hose Assembly
This task covers:
Replace
- Hose Assembly Between Flask Valve and Tee on DASS Panel,
INITIAL SETUP
Tools
Equipment
Condition
General
Mechanics
Tool Kit
Open flask valve to release any pressurized
air in flask.
Materials/Parts
Reference
High Pressure
Hose Assembly,
13229E4626
Para. 3-13, Maintenance
and Reentry Control
Tape, Teflon (Item 19, Appendix
D)
Procedures
Nonionic Detergent
Solution (NID) GP (Item 17, Appendix D)
a.
Remove
(1)
Determine which
high pressure
hose
assemblies
between
the flask valve
2
and the tee at the DASS panel
is to
be removed
and replaced.
These
instructions
are applicable
to any of
the
16
hose
assemblies,
as the
physical
configuration
for each is the
same.
(2)
Loosen
and remove
end of flexible
hose assembly
(1) from flask valve (2)
by positioning
a wrench
on upper
union nut (3) and turning counterclock-
wise.
(3)
Loosen
and remove
the opposite
end
of hose assembly
(1) from the tee (5)
by positioning
a wrench
on the union
nut (6) and turning the nut and the
hose assembly
(1) counterclockwise.
(The nut is fixed to the hose, so the
entire assembly
must be turned
when
removing
it from the tee).
4-117
