TM 5-4310-349-14
APPENDIX B
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
C - Operator or crew
B-1. General
0 - Organizational maintenance
a. This section provides a general explanation of
F - Direct support maintenance
all maintenance and repair functions authorized at
The maintenance functions are defined as follows:
various maintenance levels.
A - Inspect: To determine serviceability of an item
b. Section II designates overall responsibility for
by comparing its physical, mechanical, and electrical
the performance of maintenance functions on the
characteristics with established standards through
identified end item or component and the work
examination.
measurement time required to perform the functions by
B - Test: To verify serviceability and detect
the designated maintenance level. The implementation
incipient failure by measuring the mechanical or
of the maintenance functions upon the end item or
electrical characteristics of an item and comparing those
component will be consistent with the assigned
characteristics with prescribed standards.
maintenance functions.
C - Service: Operations required periodically to
c. Section III lists the special tools and test
keep an item in proper operating condition, i.e., to clean,
equipment required for each maintenance function as
to preserve, to drain, to paint, or to replenish fuel,
referenced from Section II. (Not applicable).
lubricants, hydraulic fluids, or compressed air supplies.
d. Section IV contains supplemental instructions
D - Adjust: To maintain within prescribed limits, by
or explanatory notes for a particular maintenance
bringing into proper or exact position, or by setting the
function (Not applicable).
operating characteristics to specified parameters.
E - Aline: To adjust specified variable elements of
B-2. Explanation of Columns in Section II
an item to bring about optimum or desired performance.
a. Column (1), Group Number. A number is
F - Calibrate: To determine and Pause corrections
assigned to each group in a top down breakdown
to be made or to be adjusted on instruments or test
sequence. The applicable groups are listed on the MAC
measuring and diagnostic equipments used in precision
in disassembly sequence beginning with the first group
measurement.
Consists of comparisons of two
removed.
instruments, one of which is a certified standard of
b. Column (2), Assembly Group. This column
known accuracy, to detect and adjust any discrepancy in
contains a brief description of the components of each
the accuracy of the instrument being compared.
numerical group.
G - Install: The act of emplacing, seating, or fixing
c. Column (3), Maintenance Functions. This
into position an item, part, or module (component or
column lists the various maintenance functions (A-
assembly) in a manner to allow the proper functioning
through K). The lowest maintenance level authorized to
of an equipment or system.
perform these functions is indicated by a symbol in the
H - Replace: The act of substituting a serviceable
appropriate column. Work measurement time standards
like type part, subassembly, or module (component or
(the active repair time required to perform the
assembly) for an unserviceable counterpart.
maintenance function) are shown directly below the
symbol identifying the maintenance level. The symbol
designations for the various maintenance levels are as
follows:
B-1
