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TM 9-1270-219-13&P
MAINTENANCE
ALLOCATION
CHART
Section
I.
INTRODUCTION
i s a certified standard of k n o w n a c c u r a c y , t o d e t e c t a n d
D-1
General
a d j u s t any discrepancy in t h e a c c u r a c y o f t h e i n s t r u m e n t
a . This section provides a general explanation of all
being compared.
maintenance
and
repair
functions
authorized
at
various
maintenance levels.
g. Install. T h e
a c t o f emplacing, seating, or fixing
into position an item, part, or module (component or
b.
The
Maintenance
Allocation
Chart
(MAC)
in
a s s e m b l y ) in a manner to allow the proper functioning of
Section
II
designates
overall
responsibility
for
the
an equipment or system.
performance of maintenance functions on the identified
e n d item or component. The implementation of the maint-
h. R e p l a c e . The act of substituting a serviceable like
e n a n c e functions upon the end item or component will be
type
part,
subassembly,
or
module
(component
or
consistent
with
the
assigned
maintenance
functions.
assembly)
for
an
unserviceable
counterpart.
c.
Section
III
lists
the
special
tools
and
test
R e p a i r . The application of maintenance services
j.
equipment required for each maintenance function as
or other manitenance actions to restore serviceability to an
r e f e r e n c e d from Section II.
i t e m by correcting specific damage, fault, malfunction, or
failure in a part, subassembly, module (component or
d.
Section
IV
contains
supplemental
instructions
and
assembly) end item, or system.
explanatory notes for a particular maintenance function.
k. O v e r h a u l .
That
maintenance
effort
(service/
D-2. Maintenance Functions
actions)
necessary
to
restore
an
item
to
a
completely
condition
as
serviceable/operational
prescribed
by
I n s p e c t . To determine the serviceability of an item
a.
maintenance
standards (ie,,
DMWR)
in
appropriate
by
comparing
its
physical,
mechanical
and/or
electrical
technical publications. Overhaul is normally the highest
characteristics
through
with
established
standards
degree of maintenance performed by the Army. Overhaul
examination.
does not normally return an item to like new condition.
b. T e s t . T o v e r i f y s e r v i c e a b i l i t y a n d d e t e c t i n c i p i e n t
l.
Rebuild.
Consists
of
those
services/actions
measuring
the
mechanical
or
electrical
failure
by
necessary for the restoration of unserviceable equipment to
characteristics of an item and comparing those character-
a like new condition in accordance with original manufact-
istics with prescribed standards.
u r i n g standards. Rebuild is the highest degree of materiel
maintenance
applied
to
Army
equipment.
The
rebuild
c. S e r v i c e . O p e r a t i o n s r e q u i r e d p e r i o d i c a l l y t o k e e p
o p e r a t i o n includes the act of returning to zero those age
an
item
in
proper
operating
condition,
ie
to
clean
measurements (hours/weeks, etc) considered in classifying
(decontaminate),
to
preserve,
to
paint,
or
to
replenish
Army
equipments/components.
D-3. Explanation of Columns in the MAC, Section II
d. A d j u s t . T o m a i n t a i n , w i t h i n p r e s c r i b e d l i m i t s , b y
bringing into proper or exact position, or by setting the
a. C o l u m n 1 , G r o u p N u m b e r . Column 1 lists group
operating
characteristics
to
specified
parameters.
numbers, the purpose of which is to identify components,
assemblies,
subassemblies,
and
modules
with
the
next
e. A l i g n . T o
adjust
specified
variable
elements
of
higher
assembly.
an item to bring about optimum or desired performance.
b. C o l u m n
2,
Component/Assembly.
f. C a l i b r a t e . T o d e t e r m i n e a n d c a u s e c o r r e c t i o n s t o
Column
2
contains
the
names
of
components,
assemblies,
sub-
be made or to be adjusted on instruments or test measuring
assemblies,
and
modules
for
which
maintenance
is
a n d diagnostic equipment used in precision measurement.
authorized.
Consists of comparisons of two instruments, one of which
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