Appendix D. MAINTENANCE ALLOCATION - TM-11-6625-467-120045

TM 11-6625-467-12

APPENDIX D

MAINTENANCE ALLOCATION

Section I. INTRODUCTION

D-1. General

i. Repair. The application of maintenance ser-

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

This appendix provides a summary of the main-

replace) or other maintenance actions (welding,

e n a n c e operations for the AN/ARM-87. It

grinding, riveting, straightening, facing,

authorizes categories of maintenance for specific

remachining, o r resurfacing) to restore ser-

maintenance functions on repairable items and

viceability y to an item by correcting specific damage,

components and the tools and equipment required

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

to perform each function. This appendix may be

module (component or assembly), end item, or

used as an aid in planning maintenance operations.

system.

D-2. Maintenance Function

j. Overhaul. That maintenance effort (ser-

vice/action) necessary to restore an item to a

Maintenance functions will be limited to an defined

completely serviceable/operational condition as

as follows:

prescribed by maintenance standards (i.e.l DM WR)

a. Inspect. To determine the serviceability of an

in appropriate technical publications. Overhaul is

item by comparing its physical, mechanical, and/or

normally the highest degree of maintenance per-

electrical Characteristics with established standards

formed by the Army. Overhaul does not normally

through examination.

return an item to like new condition.

b. Test. To verify serviceability and to detect

k. Rebuild. Consists of those services/actions

incipient failure by measuring the mechanical or

n e c e s s a r y for the restoration of unserviceable

electrical characteristics of an item and comparing

equipment to a like new condition in accordance

those characteristics with prescribed standards.

with original manufacturing standards. Rebuild is

c. Service. Operations required periodically to

the highest degree of materiel maintenance applied

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

to Army equipment. The rebuild operation includes

clean (decontaminate), to preserve, to drain to

the act of returning to zero those age measurements

paint, or to replenish fuel, lubricants, hydraulic

(hours, miles, etc.) considered in classifying Army

fluids, or compressed air supplies.

equipments/components.

d. Adjust. To maintain, within prescribed limits,

by bringing into proper or exact position, or by

D-3. Column Entries

setting the operating characteristics to the specified

a. Column 1, Group Number. Column 1 lists

parameters.

group numbers, the purpose of which is to identify

e. Align. To adjust specified variable elements of

components, assemblies, subassemblies, and

an item to bring about optimum or desired per-

modules with the next higher assembly.

formance.

b. Column 2, Component/Assembly. Column 2

f. Calibrate. To determine and cause corrections

contains the noun names of components, assem-

to be made or to be adjusted on instruments or test

b l i e s , subassemblies, and modules for which

measuring and diagnostic equipments used in in

maintenance is authorized.

precision measurement. Consists of comparisons of

c. Column 3, Maintenance Functions. Column 3

two instruments, one of which is a certified standard

lists the functions to be performed on the item listed

of known accuracy, to detect and adjust any

in column 2. When items are listed without main-

discrepancy in the accuracy of the instrument being

tenance functions, it is solely for purpose of having

compared.

the group numbers in the MAC and RPSTL coin-

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

cide.

into position an item, part, module (component or

d. Column 4, Maintenance Category. Column 4

assembly) in a manner to allow the proper func-

specifies, by the listing of a "work time" figure in

tioning of the equipment or system.

the appropriate subcolumn(s), the lowest level of

h. Replace. The act of substituting a serviceable

maintenance authorized to perform the function

like type part, subassembly, or module (component

listed in column 3. This figure represents the active

or assembly) for an unserviceable counterpart.

D-1