APPENDIX C. MAINTENANCE ALLOCATION - TM-11-5830-255-140047

TM 11-5830-255-14

APPENDIX C

MAINTENANCE ALLOCATION

Section I.

equipment used in precise measurement. Consists

C-1. General

of the comparison of two instruments, one of

This appendix provides a summary of the main-

which is a certified standard of known accuracy,

tenanace operations covered in the equipment lit-

to detect and adjust any discrepancy in the ac-

erature. It authorizes categories of maintenance

curacy of the instrument being compared with

for specific maintenance functions on repairable

the certified standard.

items and components and the tools and equip-

g. Install. To set up for use in an operational

ment required to perform each function. This

environment such as an encampment, site, or

appendix may be used as (an aid in planning

vehicle.

maintenance operations.

h. Replace. T o r e p l a c e u n s e r v i c e a b l e i t e m s

with serviceable like item.

C-2. Maintenance Functions

Maintenance functions will be limited to and de-

i. Repair. To restore an item to serviceable

fined as follows :

condition through correction of a specific failure

of unserviceable condition. This function includes,

a. Inspect. To determine serviceability of an

but is not limited to welding, grinding, riveting,

item by comparing its physical, mechanical, and

straightening, and replacement of parts other

electrical characteristics with established stand-

than the trial and err& replacement of running

ards.

spare type items such as fuses, lamps, or electron

tubes.

b. Test. To verify serviceability and to detect

incipient electrical or mechanical failure by use

j. Overhaul. Normally, the highest degree of

of special equipment such as gages, meters, etc.

maintenance performed by the Army in order to

This is accomplished with external test equip-

minimize time work in process is consistent with

ment and does not include operation of the equip

quality and economy of operation. It consists of

ment and operator type tests using internal

that maintenance necessary to restore an item

meters or indicating devices.

to completely serviceable condition as prescribed

c. Service. To clean, to preserve, to charge,

by maintenance standards in technical publica-

and to add fuel, lubricants, cooling agents, and

tions for each item of equipment. Overhaul nor-

air. If it is desired that elements, such as paint-

mally does not return an item to like new, zero

ing and lubricating, be defined separately, they

mileage, or zero hour condition.

may be so listed.

k. Rebuild. T h e h i g h e s t d e g r e e o f m a t e r i e l

d. Adjust. To rectify to the extent necessary

maintenance. It consists of restoring equipment

to bring into proper operating range.

as nearly as possible to new condition in accord-

ance with original manufacturing standards. Re-

e. Align. To adjust two or more components

build is performed only when required by opera-

or assemblies of an electrical or mechanical sys-

tional considerations or other paramount factors

tem so that their functions are properly syn-

and then only at the depot maintenance cate-

chronized. This does not include setting the fire-

gory. Rebuild reduces to zero the hours or miles

quency control knob of radio receivers or trans-

the equipment, or component thereof, has been

mitters to the desired frequency.

in use.

f. Calibrate. To determine the corrections to

be made in the readings of instruments or test

l. Symbols. The uppercase letter placed in the

C-1