TM 11-6130-243-14-2
MAINTENANCE ALLOCATION CHART
INTRODUCTION
Section I.
scribed by maintenance standards in pertinent
B-1. General
technical publications. Overhaul is normally the
This appendix provides a summary of the mainte-
highest degree of maintenance performed by the
nance operations covered in the equipment litera-
Army. Overhaul does not normally return an item
ture. It authorizes categories of maintenance for
to like new condition.
specific maintenance functions on repairable
items and components and the tools and equip-
Rebuild. Consists of those services/actions
g.
ment required to perform each function. This
necessary for the restoration of unserviceable
appendix may be used as an aid in planning
equipment to a like-new condition in accordance
maintenance operations.
with original manufacturing standards. Rebuild
is the highest degree of materiel maintenance
applied to Army equipment. The rebuild opera-
B-2. Maintenance Functions
tion includes the act of returning to zero those age
Maintenance functions will be limited to and de-
measurements (hours, miles, etc.) considered in
fined as follows:
classifying Army equipment/components.
a. Adjust. Maintain within prescribed limits
h. Repair. The application of maintenance
by bringing into proper or exact position, or by
services (inspect, test, service, adjust, align, cali-
setting the operating characteristics to the spe-
brate, replace) or other maintenance actions
cified parameters.
(welding, grinding, riveting, straightening, fac-
b. Align. To adjust specified variable elements
ing, remachining, or resurfacing) to restore serv-
of an itern to bring about optimum or desired
iceability to an item by correcting specific dam-
performance.
age, fault, malfunction, or failure in a part, sub-
end
assembly, module/component assembly,
c. Calibrate. To determine and cause correc-
item or system.
tions to be made or to be adjusted on instruments
or test measuring and diagnostic equipment used
i. Replace. The act of substituting a service-
in precision measurement. Consists of compari-
able like-type part, subassembly, module (compo-
sons of two instruments, one of which is a certi-
nent or assembly) in a manner to allow the prop-
fied standard of known accuracy, to detect and
er functioning of an equipment/system.
adjust any discrepancy in the accuracy of the
j. Service. Operations required periodically to
instrument being compared.
keep an item in proper operating condition, i.e.,
d. Inspect. To determine the serviceability of
to clean, preserve, drain, paint, or replenish fuel/
an item by comparing its physical, mechanical,
lubricants/hydraulic fluids or compressed air sup-
and/or electrical characteristics with established
plies.
standards through examination.
k. Test. To verify serviceability and to detect
e. Install. The act of emplacing, seating, or
incipient failure by measuring the mechanical or
fixing into position an item, part, module (com-
electrical characteristics of an item and compar-
ponent of assembly) in a manner to allow the
ing those characteristics with prescribed stan-
proper functioning of the equipment/system.
dards.
f. Overhaul. That maintenance effort (service/
l. Symbols. The uppercase letter placed in the
action) necessary to restore an item to be com-
appropriate column indicates the lowest level at
pletely serviceable/operational condition as pre-
