APPENDIX B MAINTENANCE ALLOCATION CHART

APPENDIX B

MAINTENANCE ALLOCATION CHART

Section 1. INTRODUCTION

The maintenance functions are defined as follows:

B-1. General

Explanation

Code

a. This section provides a general explanation of all

Inspect: To determine serviceability of an item by

maintenance and repair functions authorized at

comparing its physical, mechanical, and electrical

various maintenance levels.

characteristics with established standards through

examination.

b. Section II designates overall responsibility for

Text: To verify serviceability and detect incipient failure

the performance of maintenance functions on the

by measuring the mechanical or electrical charac-

identified end item or component and the work

teristics of an item and comparing those characteris-

measurement time required to perform the func-

tics with prescribed standards.

tions by the designated maintenance level. The

Service: Operations required periodically to keep an item

implementation of the maintenance functions upon

in proper operating conditions. i.e., to clean, to

preserve, to drain. to paint, or to replenish fuel.

the end item or component will be consistent with the

lubricants, hydraulic fluids, or compressed air sup.

assigned maintenance functions.

plies.

c. Section I II - Special Tools and Test Equipment

Adjust: To maintain within prescribed limits, by bringing

Required for Each Maintenance Function Refer-

into proper or exact position, or by setting the

enced From Section II (Not Applicable).

operating characteristics to specified parameters.

Aline: To adust specified variable elements of an item to

d. Section IV contains supplemental instructions

bring about optimum or desired performance.

or explanatory notes for a particular maintenance

Calibrate: To determine and cause corrections to be made

function (Not Applicable).

or to be adjusted on instruments or test measuring

and diagnostic equipments used in precision mea-

B-2. Explanation of Columns in Section II

surement Consists of comparisons of two instru-

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

ments, one of which is a certified standard of known

accuracy, to detect and adjust any discrepancy in the

assigned to each group in a top down breakdown

accuracy of the instrument being compared.

sequence. The applicable groups are listed on the

Install: The act of emplacing:, seating, or fixing into

MAC in disassembly sequence beginning with the

position an item, part, or module (component or

first group removed.

assembly) in a manner to allow the proper functioning

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

of an equipment or system.

Replace: The act of substituting a serviceable like type

contains a brief description of the components of

part, subassembly, or module (component or assem-

each numerical group.

bly) for an unserviceable counterpart.

c. Column (3), Maintenance Functions. This

Repair: The application of maintenance services (inspect,

column lists the various maintenance functions (A

test, service, adjust, align. calibrate, or replace) or

through K). The lowest maintenance level au-

other maintenance actions (welding, grinding, rivet-

ing. straightening. facing, remachining or resurfac-

thorized to perform these functions is indicated by a

ing) to restore serviceability to an item by correcting

symbol in the appropriate column. Work measure

specific damage. fault. malfunction, or failure in a

ment time standards (the active repair time required

part, subassembly, module (component or assembly).

to perform the maintenance function) are shown

end item, or system.

directly below the symbol identifying the mainte-

Overhaul: That maintenance effort (service/action)

necessary to restore an item to a completely

nance level. The symbol designations for the various

serviceable/operational condition as prescribed by

maintenance levels are as follows:

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

Explanation

Code

technical publication. Overhaul is normally the

Operator or crew.

highest degree of maintenance performed by the

Organization maintenance.

Army. Overhaul does not normally return an item to

Direct support maintenance.

like new condition.

General support maintenance.

Rebuild: Consists of those service/actions necessary for

Depot maintenance.

B-1