APPENDIX C. MAINTENANCE ALLOCATION - TM-11-5820-518-200031

TM 11-5820-518-20

APPENDIX C

MAINTENANCE ALLOCATION

Section I. INTRODUCTION

C-1. General

ponent or assembly) in a manner to allow the

This appendix provides a summary of the main-

proper functioning of the equipment/system.

h. Replace. The act of substituting a serviceable

t e n a n c e operations for AN/ARC-51X and

like-type part, subassembly, model (component or

AN/ARC-51BX Radio Sets. It authorizes categories

of maintenance for specific maintenance functions

assembly) for an unserviceable counterpart.

on repairable items and components and the tools

i. Repair. The application of maintenance ser-

and equipment required to perform each function.

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

This appendix may be used as an aid in planning

replace) or other maintenance actions (welding,

grinding, r i v e t i n g , straightening, facing,

maintenance operations.

remachining, or resurfacing) to restore ser-

C-2. Maintenance Function

viceability to an item by correcting specific

Maintenance functions will be limited to and

damage, fault, malfunction, or failure in a part,

defined as follows:

subassembly, module/component/assembly, end

a. Inspect. To determine the serviceability of an

item or system.

item by comparing its physical, mechanical, and/or

j. Overhaul. That periodic maintenance effort

electrical characteristics with established stan-

(service/action) necessary to restore an item to a

dards through examination.

completely serviceable/operational condition as

b. Test. To verify serviceability and to detect in-

prescribed by maintenance standards (e.g.,

cipient failure by measuring the mechanical or

DMWR) in appropriate technical publications.

electrical characteristics of an item and com-

Overhaul is normally the highest degree of main-

paring those characteristics with prescribed stan-

tenance performed by the Army. Overhaul does

dards.

not normally return an item to like-new condition.

c. Service. Operations required periodically to

k. Rebuild. Consists of those services/actions

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

necessary for the restoration of unserviceable

clean, preserve, drain, paint, or to replenish

equipment to a like-new condition in accordance

fuel/lubricants/hydraulic fluids or compressed air

with original manufacturing standards. Rebuild is

supplies.

the highest degree of materiel maintenance ap-

d. Adjust. Maintain within prescribed limits by

plied to Army equipment. The rebuild operation

bringing into proper or exact position, or by set-

includes the act of returning to zero three age

ting the operating characteristics to the specified

measurements (hours, miles, etc.) considered in

parameters.

classifying Army equipment/components.

e. Align. To adjust specified variable elements

C-3. Column Entries

of an item to about optimum or desired per-

formance.

a. Column 1, Group Number. Column 1 lists

f. Calibrate. To determine and cause corrections

group numbers, the purpose of which is to identify

to be made or to be adjusted on instruments or test

components, assemblies, subassemblies and

measuring and diagnostic equipment used in

modules with the next higher assembly.

precision measurement. Consists of the com-

b. Column 2, Component/Assembly. Column 2

parison of two instruments, one of which is a cer-

contains the noun names of components, assem-

blies, subassemblies, and modules for which main-

tified standard of known accuracy, to detect and

adjust any discrepancy in the accuracy of the in-

tenance is authorized.

strument being compared.

c. Column 3, Maintenance Functions. Column 3

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

lists the functions to be performed on the item list-

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

ed in column 2.

Change 4 C-1