MAINTENANCE ALLOCATION CHART
B-1. General.
The purpose of the Maintenance Allocation Chart is to assign maintenance functions and re-
pair operations to be performed by the lowest appropriate maintenance echelon.
B-2. Maintenance Functions.
Maintenance functions shall be limited to and defined as follows:
a. Adjust. Maintain within prescribed limits by bringing into proper or exact position, or by
setting the operating characteristics to the specified parameters.
b. Align. To adjust specified variable elements of an item to bring about optimum or desired
performance.
C. 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.
d. Inspect. To determine the serviceability of an item by comparing its physical, mechanical,
and/or electrical characteristics with established standards through examination.
e. Install. The act of emplacing, seating, or fixing into position an item, part, module (com-
ponent or assembly) in a manner to allow the proper functioning of the equipment/system.
f. Overhaul. That maintenance effort (service/action) necessary to restore an item to a com-
pletely serviceable/operational condition as prescribed by maintenance standards (e.g., DMWR) in
pertinent technical publications. Overhaul is normally the highest degree of maintenance performed
by the Army. Overhaul does not normally return an item to like new condition.
equipment to a like-new condition in accordance with original manufacturing standards. Rebuild is
the highest degree of materiel maintenance applied to Army equipment. The rebuild operation includes
the act of returning to zero those age measurements (hours, miles, etc.) considered in classifying
Army equipment/components.
h. Repair. The application of maintenance services (inspect, test, service, adjust, align, cali-
brate, replace) or other maintenance actions (welding, grinding, riveting, straightening, facing, rema-
chining, or resurfacing) to restore serviceability to an item by correcting specific damage, fault, mal-
function, or failure in a part, subassembly, module/component/assembly, end item or system.
i. Replace. The act of substituting a serviceable like-type part, subassembly, module (compo-
nent or assembly) in a manner to allow the proper functioning of an equipment/system.
j. Service. Operations required periodically to keep an item in proper operating condition, i.e.,
to clean, preserve, drain, paint, or to replenish fuel/lubricants/hydraulic fluids or compressed air sup-
plies.
k. Test. To verify serviceability and to detect incipient failure by measuring the mechanical or
electrical characteristic of an item and comparing those characteristics with prescribed standards.
l. Symbols. The uppercase letter placed in the appropriate column indicates the lowest level
at which that particular maintenance function is to be performed.
