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 TM 55-1905-217-12
APPENDIX C
MAINTENANCE ALLOCATION CHART
SECTION I. INTRODUCTION
f. Overhaul. That maintenance effort
C-1.
General
(service/action) necessary to restore an item to a
a. This section provides a general explanation of all
completely serviceable/operational condition as
maintenance and repair functions authorized at various
prescribed by maintenance standards (e.g., DMWR) in
maintenance levels.
pertinent technical publications. Overhaul is normally the
b. Section II designates overall responsibility for the
highest degree of maintenance performed by the Army.
performance of maintenance functions on the identified
Overhaul does not normally return an item to like new
end item or component. The implementation of the
condition.
maintenance functions upon the end item or component
g. Rebuild. Consists of those services/actions
will be consistent with the assigned maintenance
necessary for the restoration of equipment to a like-new
functions.
condition in accordance with original manufacturing
standards. Rebuild is the highest degree of materiel
equipment required for each maintenance function as
maintenance applied to Army equipment. The rebuild
referenced from Section II.
operation includes the act of returning to zero those age
measurements (hours, miles, etc.) considered in
explanatory notes, and/or illustrations required for a
classifying Army equipment/components.
particular maintenance function.
h. Repair. The application of maintenance
services (inspect, test, service, adjust, align, calibrate,
C-2.
Maintenance Functions
replace) or other maintenance actions (welding, grinding,
Maintenance functions shall be limited to and defined as
riveting, straightening, facing, remachining, or
follows:
resurfacing) to restore serviceability to an item by
a. Adjust. Maintain within prescribed limits by
correcting specific damage, fault, malfunction, or failure
bringing into proper or exact position, or by setting the
in a part, subassembly, module, component, assembly,
operating characteristics to the specified parameters.
end item, or system.
b. Align. To adjust specified variable elements of
i. Replace. The act of substituting a serviceable
an item to bring about optimum or desired performance.
like-type part, subassembly, module, component, or
c. Calibrate. To determine and cause corrections
assembly in a manner to allow the proper functioning of
to be made or to be adjusted on instruments or test
an equipment system.
measuring and diagnostic equipment used in precision
j. Service. Operations required periodically to
measurement. Consists of comparisons of two
keep an item in proper operating condition, i.e., to clean,
instruments, one of which is a certified standard of
preserve, drain, paint, or to replenish fuel, lubricants,
known accuracy, to detect and adjust any discrepancy in
hydraulic fluids, or compressed air supplies.
the accuracy of the instrument being compared.
k. Test. To verify serviceability and to detect
d. Inspect. To determine the serviceability of an
incipient failure by measuring the mechanical or
item by comparing its physical, mechanical, and/or
electrical characteristics of an item and compar-
electrical characteristics with established standards
through examination.
e. Install. The act of emplacing, seating, or fixing
into position an item part, module, component, or
assembly in a manner to allow the proper functioning of
the equipment/system.
C-1
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