Appendix D. MAINTENANCE ALLOCATION - TM-11-5826-257-240029

TM 11-5826-257-24

APPENDIX D

MAINTENANCE ALLOCATION

INTRODUCTION

Section I.

fixing into position an item, part, module (compo-

D-1. General

nent or assembly) in a manner to allow the proper

This appendix provides a summary of the main-

functioning of the equipment or system.

tenance operations for R1963/ARN. It authorizes

h. Replace. The act of substituting a serviceable

categories of maintenance for specific mainte-

like type part, subassembly, or module (compo-

nance functions on repairable items and compo-

nent or assembly) for an unserviceable counter-

nents and the tools and equipment required to

part.

perform each function. This appendix may be

i. Repair. The application of maintenance serv-

used as an aid in planning maintenance opera-

ices (inspect, test, service, adjust, align, calibrate,

tions.

replace) or other maintenance actions (welding,

grinding, riveting, straightening, facing, rema-

D-2. Maintenance Function

chining, or resurfacing) to restore serviceability to

Maintenance functions will be limited to and

an item by correcting specific damage, fault, mal-

defined as follows:

function, or failure in a part, subassembly, module

a. Inspect. To determine the serviceability of an

(component or assembly), end item, or system.

item by comparing its physical, mechanical, and/

This function does not include the trial and error

or electrical characteristics with established

replacement of running spare type items such as

standards through examination.

fuses, lamps, or electron tubes.

b. Test. To verify serviceability and to detect

j. Overhaul. That maintenance effort (service/

incipient failure by measuring the mechanical or

action) necessary to restore an item to a com-

electrical characteristics of an item and compar-

pletely serviceable/operational condition as pre-

ing those characteristics with prescribed stand-

scribed by maintenance standards (i.e., DMWR) in

ards.

appropriate technical publications. Overhaul is

c. Service. Operations required periodically to

normally the highest degree of maintenance per-

keep an item in proper operating condition, i.e., to

formed by the Army. Overhaul does not normally

return an item to like new condition.

clean (decontaminate), to preserve, to drain, to

paint, or to replenish fuel, lubricants, hydraulic

k. Rebuild. Consists of those services/actions

fluids, or compressed air supplies.

necessary for the restoration of unserviceable

d. Adjust. To maintain, within prescribed limits,

equipment to a like new condition in accordance

by bringing into proper or exact position, or by

with original manufacturing standards. Rebuild is

setting the operating characteristics to the speci-

the highest degree of materiel maintenance ap-

fied parameters.

plied to Army equipment. The rebuild operation

includes the act of returning to zero those age

e. Align. To adjust specified variable elements

measurements (hours, miles, etc.) considered in

of an item to bring about optimum or desired

classifying Army equipments/components.

performance.

f. Calibrate. To determine and cause correc-

tions to be made or to be adjusted on instruments

D-3. Column Entries

or test measuring and diagnostic equipments used

in precision measurement. Consists of compari-

a. Column 1, Group Number. Column 1 lists

sons of two instruments, one of which is a certified

group numbers, the purpose of which is to identify

standard of known accuracy, to detect and adjust

components, assemblies, subassemblies, and mod-

any discrepancy in the accuracy of the instrument

ules with the next higher assembly.

being compared.

b. Column 2, Component/Assembly. Column 2

g. Install. The act of emplacing, seating, or

contains the noun names of components, assem-

D-1