TM5-4220-231-14&P
Section VI. MAINTENANCEPROCEDURES
Page
3-12
Introduction
..................................................
3-16
3-13
Maintenance
and Reentry Control Procedures
.........................
3-16
3-14
Adjust Gage, High Pressure (HP) or Low Pressure
(LP) (System)
..........
3-22
3-15
Replace Gage, High Pressure (HP) or Low Pressure
(LP) (DACC) ..........
3-23
3-16
Adjust Gage, Diver Depth (DACC) ..................................
3-26
3-17
Replace Gage, Diver Depth (DACC)
................................
3-27
3-18
Replace Gage, Low Pressure
(LP) (VTA)
............................
3-30
3-19
Replace
Relief Valve (VTA)
......................................
3-33
3-20
Replace Gage, High Pressure
(HP) (DASS)
..........................
3-35
3-21
Replace Gage, High Pressure (HP) or Low Pressure
(LP) (CRS) ...........
3-38
3-12
Introduction.
This
section
contains
maintenance
procedures
which
are the
responsibility
of unit level
maintenance
as
authorized
by the
Maintenance
Allocation
Chart
(MAC) and
the
Source
Maintenance
and
Recoverability
(SMR) coded
items that are identified
in the Repair
Parts
and Special
Tools
Lists (RPSTL).
Iftroubleshooting
procedures
are required
to perform
a maintenance/repair,
they must be applied
with a systematic
step
by step
approach.
(Section
V, Chapter
3).
Maintenance
at the unit level is restricted
to the inspection
and
cleaning
of the main
SDASS
components,
replacement
of gages,
VTA relief valve,
hose
assemblies,
and
minor
components
such
as thread
protective
caps
and valve
handles.
NOTE
Maintenance
procedures
should
be performed
in accordance
with the
MAC.
Unless
specified,
procedures
requiring
disassembly
of SDASS
subcomponents
will not
be
performed
at
the
operator/unit
level.
3-13
Maintenance
and
Reentry
Control
Procedures.
Maintenance
and
Reentry
Control
Procedures
are
established
to document
and
maintain
the integrity,
cleanliness,
and safety
of the system
and to ensure
work is
done
IAW proper
specifications
and
procedures
in Section
V11of this chapter.
Reentry
control
(REC)
applies
to the
air system
portion
of the SDASS.
Reentry
control
boundaries
(figure 3-1)
encompass
the
Diver Air Storage
System
(DASS),
Diver Air Control
Console
(DACC), Volume
Tank
Assembly
(VTA), Chamber
Reducing
Station
(CRS),
interconnecting
hoses,
and 88.5 LP compressors.
A reentry
control
report
must
be completed
and
approved
for each
maintenance
action
and
a control
log will be
maintained
for each
system.
A sample
REC Report
is shown
at figure
3-2, and a sample
control
log is shown
at
figure
3-3.
3-16
