TM 5-6675-307-14
APPENDIX D
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
D-1.
General
(6) Calibrate. To determine and cause
a. This section provides a general explanation
corrections to be made or to be adjusted on instruments
or test measuring and diagnostic equipments used in
of all maintenance and repair functions authorized at
precision measurement. Consists of comparison of two
various maintenance levels.
b. Section II designates overall responsibility
instruments, one of which is a certified standard of
known accuracy, to detect and adjust any discrepancy in
for the performance of maintenance functions on the
the accuracy of the instrument being compared.
identified end item or component and the work
(7) Install. The act of emplacing, seating,
measurement time required to perform the functions by
or fixing into position an item, part, or module
the designated maintenance level. The implementation
(component or assembly) in a manner to allow the
of the maintenance functions upon the end item or
proper functioning of an equipment or system.
component will be consistent with the assigned
(8) Replace. The act of substituting a
maintenance functions.
c. Section III lists the tools and test equipment
serviceable like type part, subassembly, or module
(component or assembly) for an unserviceable
required for each maintenance function as referenced
counterpart.
from Section II.
(9) Repair.
The
application
of
D-2.
Explanation of Columns in Section II
maintenance services (inspect, test, service, adjust,
a. Column (I), Group Number. Column I lists
align, calibrate, or replace) or other maintenance actions
(welding, grinding, riveting, straightening, facing,
group numbers to identify related components,
remachining or resurfacing) to restore serviceability to
assemblies, subassemblies, and modules with their next
an item by correcting specific damage, fault,
higher assembly. The applicable groups are listed in the
malfunction, or failure in a part, subassembly, module
MAC in disassembly sequence beginning with the first
(component or assembly), end item, or system.
group removed.
(10) Overhaul. That maintenance effort
b. Column (2), Component/Assembly. This
(service/ action) necessary to restore an item to a
column contains the noun names of components,
completely
serviceable/operational
condition
as
assemblies, subassemblies and modules for which
prescribed by maintenance standards (i.e., DMWR) in
maintenance is authorized.
c. Column (3), Maintenance Functions. This
appropriate technical publications. Overhaul is normally
the highest degree of maintenance performed by the
column lists the functions to be performed on the item
Army. Overhaul does not normally return an item to a
listed in Column 2. The maintenance functions are
like new condition.
defined as follows:
(11) Rebuild.
(1) Inspect. To determine serviceability
Consists
of
those
services/actions necessary for the restoration of
of an item by comparing its physical, mechanical, and/or
unserviceable equipment to a like new condition in
electrical characteristics with established standards
accordance with original manufacturing standards.
through examination.
(2) Test.
Rebuild is the highest degree of materiel maintenance
To verify serviceability and
applied to Army equipment. The rebuild operation
detect incipient failure by measuring the mechanical or
includes the act of returning to zero those age
electrical characteristics of an item and comparing those
measurements (hours/miles, etc.) considered in
characteristics with prescribed standards.
(3) Service.
classifying Army equipments/components.
Operations
required
d. Column (4). Maintenance Category. This
periodically to keep an item in proper operating
column is made up of subcolumns for each category of
condition, i.e., to clean (decontaminate), to preserve, to
maintenance. Wgrk time figures are listed in these
drain, to paint, or to replenish fuel, lubricants, hydraulic
subcolumns for the lowest level of maintenance
fluids, or compressed air supplies.
(4) Adjust. To maintain within prescribed
authorized to perform the function listed in Column 3.
These figures indicate the average active time required
limits, by bringing into proper or exact position, or by
to perform the maintenance function at the indicated
setting the operating characteristics to specified
category of maintenance under typical field operating
parameters.
(5) Align. To adjust specified variable
conditions.
e. Column (5). Tools and Equipment. This
elements of an item to bring about optimum or desired
column is provided for referencing by code, the common
performance.
tool sets (not individual tools), special tools, test and
support equipment required to perform the designated
function.
Change 2 D-1
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