TM 9-4931-355-14
APPENDIX C
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
equipment. Overhaul normally does not return an item
C-1. General.
to like new, zero mileage or zero hour condition.
This appendix contains the maintenance
allocation chart which indicates the lowest level of
k. Rebuild.
The highest degree of materiel
maintenance
authorized
to
perform
particular
maintenance. It consists of restoring equipment as
maintenance operations.
nearly as possible to new condition in accordance with
original manufacturing standards. Rebuild is performed
only when required by operational considerations or
C-2. Maintenance Functions.
other paramount factors and then only at the depot
Maintenance functions will be limited to and
maintenance category. Rebuild reduces to zero the
defined as follows:
hours or miles the equipment, or component thereof,
a. Inspect. To determine serviceability of an item
has been in use.
by comparing its physical, mechanical, and electrical
characteristics with established standards.
C-3. Explanation of Format.
b. Test. To verify serviceability and to detect
a. Column 1, Group Number. Column 1 lists group
electrical or mechanical failure by use of test equipment.
numbers, the purpose of which is to identify
c. Service. To clean, to preserve, to charge, and
components, assemblies, subassemblies, and modules
to add fuel, lubricants, cooling agents, and air If it is
with the next higher assembly.
desired that elements, such as painting and lubricating,
b. Column 2, Component/Assembly. Column 2
be defined separately, they may be so listed.
contains the noun names of components, assemblies,
d. Adjust. To rectify to the extent necessary to
subassemblies, and modules for which maintenance is
bring into proper operating range.
authorized.
e. Aline. To adjust specified variable elements of
c. Column 3, Maintenance Functions. Column 3
an item to bring to optimum performance.
lists the functions to be performed on the item listed in
f. Calibrate. To determine the corrections to be
Column 2.
made in the readings of instruments or test equipment
d. Column 4, Maintenance Category. Column 4
used in precise measurement.
Consists of the
specifies, by the listing of a "work time" figure in the
comparison of two instruments, one of which is a
appropriate subcolumn(s), the lowest level of
certified standard of known accuracy, to detect and
maintenance authorized to perform the function listed in
adjust any discrepancy in the accuracy of the instrument
Column 3. This figure represents the active time
being compared with the certified standard.
required to perform that maintenance function at the
g. Install. To set up for use in an operational
indicated category of maintenance. If the number or
environment such as an emplacement, site, or vehicle.
complexity of the tasks within the listed maintenance
h. Replace. To replace unserviceable items with
function vary at different maintenance categories,
serviceable like items.
appropriate "work time" figure will be shown for each
category. The number of man-hours specified by the
i. Repair.
Those maintenance operations
"work time" figure represents the average time required
necessary to restore an item to serviceable condition
to restore an item (assembly subassembly, component,
through correction of material damage or a specific
module, end item or system) to a serviceable condition
failure. Repair may be accomplished at each category
under typical field operating conditions. This time
of maintenance.
includes preparation time, troubleshooting time, and
j. Overhaul. Normally, the highest degree of
maintenance performed by the Army in order to
minimize time work in process is consistent with quality
and economy of operation.
It consists of that
maintenance necessary to restore an item to completely
serviceable condition as prescribed by maintenance
standards in technical publications for each item of
C-1
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