TM 9-6650-212-12
APPENDIX C
MAINTENANCE ALLOCATION CHART
INTRODUCTION
Section I.
i. Repair. Those maintenance operations neces-
C-1. General.
sary to restore an item to serviceable condition
This Maintenance Allocation Chart designates
through correction of material damage or a
overall responsibility for the performance func-
specific failure. Repair may be accomplished at
tions on the identified end item or component.
each category of maintenance.
The implementation of field maintenance tasks
j. Overhaul. Normally. the highest degree of
upon this end item or component will be consistent
maintenance performed by the Army in order to
with the assigned maintenance operations.
minimize time work in process is consistent with
quality and economy of operation. It consists of
C-2.
Maintenance Functions.
that maintenance necessary to restore an item to
completely serviceable condition as prescribed by
Maintenance functions will be limited to and
maintenance standards in technical publications
defined as follows:
for each item of equipment. Overhaul normally
a. Inspect. To determine serviceability of an
does not return an item to like new, zero mileage,
item by comparing its physical, mechanical and
or zero hour condition.
electrical characteristics with established stand-
k. Rebuild. The highest degree of materiel
ards.
maintenance. It consists of restoring equipment
b. Test. To verify serviceability and to detect
as nearly as possible to new condition in accord-
electrical or mechanical failure by use of test
ance with original manufacturing standards.
equipment.
Rebuild is performed only when required by
c. Service. To clean, to preserve, to charge and
operational considerations or other paramount
to add fuel, lubricants, cooling agents, and air.
factors and then only at the depot maintenance
If it is desired that elements, such as painting
category. Rebuild reduces to zero the hours or
and lubricating, be defined separately, they may
miles the equipment, or component thereof, has
be so listed.
been in use.
d. Adjust. To rectify to the extent necessary
l. Symbols. The uppercase letter placed in the
to bring into proper operating range.
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
C-3. Explanation of Columns.
equipment used in precise measurement. Consists
Listed below is an explanation of the columns
of the comparison of two instruments, one of
shown in the maintenance allocation chart:
which is a certified standard of known accuracy,
to detect and adjust any discrepancy in the ac-
a. Column 1, Group Number. Column 1 lists
curacy of the instrument being compared with
group numbers, the purpose of which is to
identify components, assemblies, subassemblies
the certified standard.
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-
assemblies and modules on which maintenance is
h. Replace. To replace unserviceable items
authorized.
with serviceable like items.
C-1
