TM 55-2090-201-14&P
APPENDIX B
MAINTENANCE ALLOCATION CHART
SECTION I.
I N T R O D U C T I O N
B-1.
GENERAL.
a.
This section provides a general explanation of all mainte-
nance and repair functions authorized at various maintenance levels.
b.
The Maintenance Allocation Chart (MAC) in Section II desig-
nates overall responsibility for the performance of maintenance func-
tions on the identified end item or component.
The implementation of
the maintenance functions upon the end item or component will be
consistent with the assigned maintenance functions.
c.
Section III contains supplemental instructions or explanatory
notes for a particular maintenance function.
B-2.
MAINTENANCE FUNCTIONS.
Inspect.
paring its physical, mechanical and/or electrical characteristics
To determine the serviceability of an item by com-
with established standards through examination.
b.
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.
c.
Service.
Operations required periodically to keep an item in
proper operating condition, i.e., to clean (decontaminate), to pre-
serve, to drain, to paint, or to replenish fuel, lubricants, hydraulic
fluids, or compressed air supplies.
d.
Adjust.
To maintain, within prescribed limits, by bringing
into proper or exact position, or by setting the operating character-
istics to specified parameters.
e.
Align.
To adjust specified variable elements of an item to
bring about optimum or desired performance.
f.
Calibrate.
To determine and cause corrections to be made or
to be adjusted on instruments or test measuring and diagnostic equip-
ments 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.
B-1
