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TM 5-4210-218-13&P
c.
Section III lists the special tools and test equipment required for each maintenance function.
B-2.
EXPLANATION OF COLUMN IN SECTION II.
a.
Column (1). Group Number. A number is assigned to each group in a top down breakdown sequence. The
applicable groups are listed on the MAC in disassembly sequence beginning with the first group removed.
b.
Column (2), Component Assembly. This column contains a brief description of the components of each
numerical group.
c.
Column (3). Maintenance Function. This column lists the various maintenance functions (A through K). The
lowest maintenance level authorized to perform these functions is indicated by a symbol in the appropriate column. Work
measurement time standards (the active repair time required to perform the maintenance function) are shown directly
below the symbol identifying the maintenance level. The symbol designations for the various maintenance levels are as
follows:
C - Operator or crew
O - Organizational maintenance
F - Direct support maintenance
The maintenance functions are defined as follows:
(1) Inspect. To determine serviceability of an item by comparing its physical, mechanical, and/or electrical
characteristics with established standards through examination.
(2) Test. To verify serviceability and detect incipient failure by measuring the mechanical or electrical
characteristics of an item and comparing those characteristics with prescribed standards.
(3) Service. Operations required periodically to keep an item in proper operating condition, i.e., to clean, to
preserve, to drain, to paint, or to replenish fuel, lubricants, hydraulic fluids, or compressed air supplies.
(4) Adjust. To maintain within prescribed limits by bringing into proper or exact position, or by setting the
operating characteristics to specified parameters.
(5) Align. To adjust specified variable elements of an item to bring about optimum or desired performance.
(6) Calibrate. To determine and cause corrections to be made or to be adjusted on instruments or test
measuring and diagnostic equipment used in precision measurement. Consists of comparisons of two instruments, one of
which is a certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the instrument
being compared.
(7) Install. The act of emplacing, seating, or fixing into position an item, part, or module (component or
assembly) in a manner to allow the proper functioning of an equipment or system.
(8) Replace. The act of substituting a serviceable like type part, subassembly, or module (component or
assembly) for an unserviceable counterpart.
(9) Repair. The application of maintenance services or other maintenance actions to restore serviceability to an
item by correcting specific damage, fault, malfunction or failure in a part, subassembly, module (component or assembly),
and item or system.
(10)
Overhaul. That maintenance effort (service/action) necessary to restore an item to a completely
serviceable/operational condition as prescribed by maintenance standards (i.e., DMWR) in
B-2
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