Appendix B: MAINTENANCE ALLOCATION CHART

55-1730-202-14

APPENDIX B

MAINTENANCE ALLOCATION CHART

(8) Replace. To replace unserviceable items

1. PURPOSE.

with serviceable assemblies, subassemblies, or

The purpose of the maintenance allocation

parts.

chart is to provide all activities with maintenance

(9) Repair. To restore an item to serviceable

functions to be performed at each level of main-

condition. This includes, but is not limited to,

tenance.

inspection, cleaning, preserving, adjusting, re-

placing, welding, riveting, and strengthening.

2. DEFINITIONS.

(10) Overhaul. To restore an item to a com-

a. Column 1, Group Number. Column 1 lists

pletely serviceable condition as prescribed by

group numbers, the purpose of which is to iden-

maintenance

serviceabilty

standards

prepared

tify components, assemblies, subassemblies, and

and published for the specific item to be over-

modules with the next higher assembly.

hauled.

b. Column 2, Functional Group. Column 2

(11) Rebuild. To restore an item to a stand-

lists the noun names of components, assemblies,

ard as nearly as possible to original or new con-

subassemblies, and modules on which mainte-

dition in appearance, performance, and life ex-

nance is authorized.

c. Column 3, Maintenance Functions. M a i n -

pectancy. This is accomplish through complete

tenance functions will be limited to and defined

disassembly of the item, inspection of all parts

as follows:

or components, repair or replacement of worn or

(1) Inspect. To determine serviceability of

unserviceable elements (items) using original

manufacturing tolerances and specifications, and

an item by comparing its Physical, mechanical,

and electrical characteristics with estblished

subsequent reassembly of the item.

standards.

( 1 2 ) Symbols. The symbol O, F, H, or D

(2) Test. T O verify serviceability and to de-

placed in the appropriate column indicates the

tect electrical or mechanical failure by use of test

level responsible for performing that particular

equipment.

maintenance function. The symbol "%%" which

(3) Service. To clean, to preserve, to charge,

applies to organizational maintenance indicates

and to add fuel, lubricants, cooling agents, and

the level responsible for performing that particu-

air. If it is desired that elements, such as painting

l a r maintenance function may be performed

and lubricating, be defined separately, they may

provided it `s specifically authorized by the direct

be so listed.

support maintenance officer. Use of the symbol

(4) Adjust. To rectify to the extent neces-

will apply only to replacement of major assem-

sary to bring into proper operating range.

blies and time-consuming operations which are

(5) Align. To adjust specified variable ele-

within the capabilities of organization, but over

ments of an item to bring to optimum performa-

which control by the commodity commands is

nce.

considered essential. In no case will the direct

(6) Calibrate. To determine the corrections

support maintenance officer require the accom-

to be made in the readings of instruments or test

plishment of a "%%" maintenance function by

equipment used in precise measurement. Con-

an organization or unit, and in no case will a

sists of the comparison of two instruments, one

"%%" function authorize stockage of parts at

of which is a certified standard of known accu-

organizational level.

racy, to detect and adjust any discrepancy in the

d. Column 4, Tools and Equipment. This col-

accuracy of the instrument being compared with

umn will be used to specify, by rode, those tools

the certified standard.

a n d test equipment required to perform the

(7) Install. To set up for use in an oper-

designated function.

ational environment such as an emplacement,

site, or vehicle.

e. Column 5, Remarks. Self-explanatory.