TM 9-1290-357-15
MAINTENANCE ALLOCATION CHART
INTRODUCTION
Section l.
h. Replace. To replace unserviceable items with
C-1. General
serviceable like items.
This Maintenance Allocation Chart designates
i. Repair. Those maintenance operations neces-
overall responsibility for the performance of
sary to restore an item to serviceable condition
maintenance functions on the identified end item
through correction of material damage or a speci-
or component. The implementation of field main-
fic failure. Repair may be accomplished at each
tenance tasks upon this end item or compotent
category of maintenance.
will be consistent with the assigned maintenance
operations.
j. Overhaul. Normally, the highest degree of
maintenance performed by the Army in order to
C-2. Maintenance Functions
minimize time work in process is consistent with
quality and economy of operation. It consists of
Maintenance functions will be limited to and
that maintenance necessary to restore an item to
defined as follows:
completely serviceable condition as prescribed by
a. Inspect. To determine serviceability of an
maintenance standards in technical publications
item by comparing its physical, mechanical and
for each item of equipment. Overhaul normally
electrical characteristics with established stand-
does not return an item to like new, zero mileage,
ards.
or zero hour condition.
b. Test. To verify serviceability and to detect
k. Rebuild. The highest degree of materiel
electrical or mechanical failure by use of test
maintenance. It consists of restoring equipment
equipment.
as nearly as possible to new condition in accord-
ance with original manufacturing standards. Re-
c. Service. To clean, to preserve and to lubri-
build is performed only when required by opera-
cate. If it is desired that elements, such as paint-
tional considerations or other paramount factors
ing and lubricating, be defined separately, they
and then only at the depot maintenance category.
may be so listed.
Rebuild reduces to zero the hours or miles the
d. Adjust. To rectify to the extent necessary
equipment, or component thereof, has been in use.
to bring into proper operating range.
l. Symbols. The uppercase letter placed in the
appropriate column indicates the lowest level at
e. Align. To adjust specified variable elements
which that particular maintenance function is to
of an item to bring to optimum performance.
be performed.
f. Calibrate. To determine the corrections to be
made in the readings of instruments or test equip-
C-3. Explanation of Columns
ment used in precise measurement. Consists of
Listed below is an explanation of the columns
the comparison of two instruments, one of which
shown in the maintenance allocation chart:
is a certified standard of known accuracy, to
detect and adjust any discrepancy in the accuracy
a. Column 1, Group Number. Column 1 lists
of the instrument being compared with the certi-
group numbers, the purpose of which is to iden-
fied standard.
tify components, assemblies, subassemblies and
modules with the next higher assembly.
g. Install. To set up for use in an operational
environment such as an emplacement, site, or
b. Column 2, Functional Group. Column 2 lists
vehicle.
the noun names of components, assemblies, sub-
C-1
