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TM 10-4930-248-13&P
B-2. MAINTENANCE
FUNCTIONS
-continued.
j.
Overhaul.
That maintenance
effort (service/action)
prescribed
to restore
an item to a completely
serviceable/operational
condition
as required
by maintenance
standards
in appropriate
technical
publications
(i.e., DMWR).
Overhaul
is normally
the highest
degree
of maintenance
performed
by
the Army.
Overhaul
does not normally
return
an item to like new condition.
k.
Rebuild.
Consists
of those
services/actions
necessary
for the restoration
of unserviceable
equipment
to a like new condition
in accordance
with original
manufacturing
standards.
Rebuild
is the highest
degree
of material
maintenance
applied
to Army equipment.
The rebuild
operation
includes
the act of returning
to zero those age measurements
(hours/miles,
etc.) considered
in
classifying
Army equipment/components.
B-3.
EXPLANATION
OF COLUMNS
IN THE MAC - SECTION
II.
a.
Column
1, Group
Number.
Column
1 lists functional
group
code numbers,
the purpose
of which
is
to identify
maintenance
significant
components,
assemblies,
subassemblies,
and modules
with
the
next higher
assembly.
End item
group numbers
are "00".
b.
Column
2, Component/Assembly.
Column
2 contains
the names
of components,
assemblies,
subassemblies,
and modules
for which
maintenance
is authorized.
c.
Column
3, Maintenance
Function.
Column
3 lists the functions
to be performed
on the item
listed
in Column
2. (For a detailed
explanation
of these
functions,
see paragraph
B-2).
d.
Column
4, Maintenance
Level.
Column
4 specifies,
by the listing
of a work time figure
(expressed
as man-hours
shown as whole hours
or decimals)
in the appropriate
subcolumn(s),
the level of
maintenance
authorized
to perform
the function
listed in Column
(3). This figure represents
the
active
time required
to perform
that
maintenance
function
at the indicated
level of maintenance.
If
the number
or the complexity
of the tasks
within
the listed
maintenance
function
vary
at different
maintenance
levels, appropriate
work time
figures
will be shown for each level.
The work time
figure
represents
the average
time required
to restore
an item (assembly,
subassembly,
component,
module,
end item, or system)
to a serviceable
condition
under
typical
field
operating
conditions.
This time
includes
preparation
item
including
any necessary
disassembly/assembly
time),
troubleshooting/fault
location
time, and quality
assurance/quality
control
time in addition
to the
time
required
to perform
B-2
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