TM 11-5855-239-23
MAINTENANCE ALLOCATION
INTRODUCTION
Section I.
which is a certified standard of known accuracy,
B-1. General
to detect and adjust any discrepancy in the ac-
This appendix provides a summary of the main-
curacy of the instrument being compared.
tenance operations covered in the equipment lit-
g. Install. The act of emplacing, seating, or
erature. It authorizes categories of maintenance
fixing into position an item, part, module (com-
for specific maintenance functions on repairable
ponent or assembly) in a manner to allow the
items and components and the tools and equip-
proper functioning of the equipment/system.
ment required to perform each function. This ap-
pendix may be used as an aid in planning main-
h. Replace. The act of substituting a service-
tenance operations.
able like-type part, subassembly, module (com-
ponent or assembly) in a manner to allow the
B-2. Maintenance Functions
proper functioning of an equipment/system.
Maintenance functions will be limited to nd de-
i. Repair. The application of maintenance serv-
fined as follows:
ices (inspect, test, service, adjust, align, cali-
brate, replace) or other maintenance actions
a. Inspect. To determine the serviceability of
(welding, grinding, riveting, straightening, fac-
an item by comparing its physical, mechanical,
ing, remachining, or resurfacing) to restore serv-
and/or electrical characteristics w.ith established
iceability to an item by correcting specified dam-
standards through examination.
age, fault, malfunction, or failure in a part, sub-
b. Test. To verify serviceability and to detect
assembly, module/component/assembly, end item
incipient failure of measuring the mechanical or
or system.
electrical characteristics of an item and com-
j. Overhaul. That maintenance effort (serv-
paring those characteristics with prescribed
ice/action) necessary to restore an item to a
standards.
completely serviceable/operational condition as
c. Service. Operations required periodically to
prescribed by maintenance standards (e.g., DM-
keep an item in proper operating condition, i.e.,
WR) in pertinent technical manuals. Overhaul
to clean, preserve, drain, paint, or to replenish
is normally the highest degree of maintenance
fuel/lubricants/hydraulic fluids or compressed air
performed by the Army. Overhaul does not nor-
supplies.
mally return an item to like-new condition.
d. Adjust. Maintain within prescribed limits by
k. Rebuild. Consists of those services/actions
bringing into proper or exact position, or by set-
ting the operating characteristics to the specified
equipment to a like-new condition in acccordance
parameters.
with original manufacturing standards. Rebuild
is the highest degree of materiel maintenance
e. Align. To adjust specified variable elements
applied to Army equipment. The rebuild opera-
an item to about optimum or desired per-
tion includes the act of returning to zero those
formance.
age measurements (hours, miles, etc.) con-
f. Calibrate. To determine and cause correc-
sidered in classifying Army equipment/compon-
tions to be made or to be adjusted on instru-
ents.
ments or test measuring and diagnostic equip-
ment used to precision measurement, Consists
l. Symbols, The uppercase letter placed in the
of the comparison of two instruments, one of
appropriate column indicates the lowest level at