Appendix C. MAINTENANCE ALLOCATION CHART

TM 5-6625-2691-13&P

APPENDIX C

MAINTENANCE ALLOCATION CHART

Section I. INTRODUCTION

C-1. General

to be made or to be adjusted on instruments or test

measuring and diagnostic equipments used in precision

a. This section provides a general explanation of all

measurement. Consists of comparison of two instru-

maintenance and repair functions authorized at

ments, one of which is a certified standard of known ac-

various maintenance levels.

curacy, to detect and adjust any discrepancy in the ac-

b. Section II designates overall responsibility for the

curacy of the instrument being compared.

performance of maintenance functions on the iden-

(7) Install. The act of emplacing, seating, or fixing

tified end item or component and the work measure-

into position an item, part or module (component or as-

ment time required to perform the functions by the

sembly) in a manner to allow the proper functioning of

designated maintenance level. The implementation of

an equipment or system.

the maintenance functions upon the end item or com-

(8) Replace. The act of substituting a serviceable

ponent will be consistent with the assigned mainte-

like type part, sub-assembly, or module (component or

nance functions.

assembly) for an unserviceable counterpart.

c. Section III lists the tools and test equipment re-

(9) Repair. The application of maintenance ser-

quired for each maintenance function as referenced

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

from Section II.

replace) or other maintenance actions (welding, grind-

C-2. Explanation of Columns in Section II

ing, riveting, straightening, facing, remachining or

a. Column (1), Group Number. Column 1 lists group

resurfacing) to restore serviceability to an item by cor-

numbers to identify related components, assemblies,

recting specific damage, fault, malfunction, or failure

sub-assemblies, and modules with their next higher as-

in a part, sub-assembly, module (component or assem-

sembly. The applicable groups are listed in the MAC in

bly), end item, or system.

disassembly sequence beginning with the first group

(10) Overhaul. That maintenance effort (ser-

removed.

vice/action) necessary to restore an item to a com-

b. Column (2), Component/Assembly. This column

pletely serviceable/operational condition as prescribed

contains the noun names of components, assemblies,

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

sub-assemblies and modules for which maintenance is

technical publications. overhaul is normally the high-

authorized.

est degree of maintenance performed by the Army.

Overhaul does not normally return an item to a like

c. Column (3), Maintenance Functions. This column

lists the functions to be performed on the item listed in

new condition.

(11) Rebuild. Consists of those services/actions

column 2. The maintenance functions are defined as

follows:

necessary for the restoration of unserviceable equip-

ment to a like new condition in accordance with origi-

(1) Inspect. To determine serviceability of an item

nal manufacturing standards. Rebuild is the highest

by comparing its physical, mechanical, and/or electri-

degree of materiel maintenance applied to Army

cal characteristics with established standards through

Equipment. The rebuild operation includes the act of

examination.

returning to zero those age measurements (hours/miles,

(2) Test. To verify serviceability and detect inci-

etc.) considered in classifying Army Equip-

pient failure by measuring the mechanical or electrical

ment/Components.

characteristics of an item and comparing those charac-

d. Column (4), Maintenance Category. This column

teristics with prescribed standards.

is made up of sub-columns for each category of mainte-

(3) Service. Operations required periodically to

nance. Work time figures are listed in these sub-col-

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

umns for the lowest level of maintenance authorized to

clean (decontaminated), to preserve, to drain, to paint,

perform the function listed in column 3. These figures

or to replenish fuel, lubricants, hydraulic fluids, or

indicate the average active time required to perform

compressed air supplies.

(4) Adjust. To maintain within prescribed limits,

the maintenance function at the indicated category of

maintenance under typical field operating conditions.

by bringing into proper or exact position, or by setting

e. Column (5), Tools and Equipment. This column is

the operating characteristics to specified parameters.

(5) Align. To adjust specified variable elements of

provided for referencing by code, the common tools sets

(not individual tools) special tools, test and support

an item to bring about optimum or desired perfor-

equipment required to perform the designated func-

mance.

tion.

(6) Calibrate. To determine and cause corrections

C-1