APPENDIX B MAINTENANCE ALLOCATION CHART

APPENDIX B

MAINTENANCE ALLOCATION CHART

Section 1. INTRODUCTION

pient failure by measuring the mechnical or electri-

B-1. General

cal characteristics of an item and comparing those

a. This section provides a general explanation of

characteristics with prescribed standards.

all maintenance and repair functions authorized at

C - Service: Operations required periodically to

various maintenance levels.

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

b. Section II designates overall responsibility for

clean, to preserve, to drain, to paint, or to replenish

the performance of maintenance functions on the

fuel, lubricants, hydraulic fluids, or compressed air

identified end item or component and the work

supplies.

measurement time required to perform the func-

D - Adjust: To maintain within prescribed limits,

tions by the designated maintenance level. The

by bringing into proper or exact position, or by

implementation of the maintenance functions upon

setting the operating characteristics to specified

the end item or component will be consistent with the

parameters.

assigned maintenance functions.

E - Aline: TO adjust specified variable elements of

c. Section III lists the special tools and test

an item to bring about optimum or desired perfor-

equipment required for each maintenance function

mance.

as referenced from Section II. (Not Applicable).

F - Calibrate: To determine and cause correc-

d. Section IV contains supplemental instructions

tions to be made or to be adjusted or instruments or

or explanatory notes for a particular maintenance

test measuring and diagnostic equipments used in

function. (Not Applicable).

precision measurement. Consists of comparisons of

B-2. Explanation of Columns in Section II

two instruments, one of which is a certified standard

of known accuracy, to detect and adjust any

a. Column (1), Group Number. A number is

discrepancy in the accuracy of the instrument being

assigned to each group in a top down breakdown

compared.

sequence. The applicable groups are listed on the

G - Install: The act of emplacing, seating, or

MAC in disassembly sequence beginning with the

fixing into position an item, part, or module

first group removed.

(component or assembly) in a manner to allow the

b. Column (2), Functional Group. This column

proper functioning of an equipment or system.

contains a brief description of the components of

H - Replace: The act of substituting a serviceable

each numerical group.

like type part, subassembly, or module (component or

c. Column (3), Maintenance Functions. T h i s

column lists the various maintenance functions (A

assembly) for an unserviceable counterpart.

through K). The lowest maintenance level au-

I. - Repair: The application of maintenance ser-

thorized to perform these functions is indicated by a

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

replace) or other maintenance actions (welding,

symbol in the appropriate column. Work measure-

grinding, reveting, straightening, facing, remachin-

ment time standards (the active repair time required

ing or resurfacing) to restore serviceability to an

to perform the maintenance function) are shown

item by correcting specific damage, fault, malfunc-

directly below the symbol identifying the mainte-

tion, or failure in a part, subassembly, module

nance level. The symbol designations for the various

(component or assembly), end item, or system.

maintenance levels are as follows:

C - Operator or crew.

J - Overhaul:

The

maintenance

effort

O - Organization maintenance.

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

F - Direct support maintenance.

completely serviceable/operational condition as pre-

H - General support maintenance.

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

D - Depot maintenance.

appropriate technical publication. Overhaul is nor-

The maintenance functions are defined as

mally the highest degree of maintenance performed

follows:

by the Army. Overhaul does not normally return an

A - Inspect: To determine serviceability of an item

item to like new condition.

by comparing its physical, mechanical, and electrical

K - Rebuild: Consists of those services/actions

characteristics with established standards through

necessary for the restoration of unserviceable

examination.

B - Test: To verify serviceability and detect inci-

equipment to a like new condition in accordance with

B-1