APPENDIX B. MAINTENANCE ALLOCATION CHART

APPENDIX B

MAINTENANCE ALLOCATION CHART

Section I. INTRODUCTION

B-1. General

cipient failure by measuring the mechanical or electrical

characteristics of an item and comparing those

a. This section provides a general explanation

characteristics with prescribed standards.

of all maintenance and repair functions authorized at

C - SERVICE. Operations required periodically

various maintenance levels.

to 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 fuel,

the performance of maintenance functions on the

lubricants, hydraulic fluids, or compressed air supplies.

identified end item or component and the work

D - ADJUST. To maintain within prescribed

measurement time required to perform the functions by

limits, by bringing into proper or exact position, or by

the designated maintenance level. The implementation

setting the operating characteristics to specified

of the maintenance functions upon the end item or

parameters.

component will be consistent with the assigned

E - ALINE. To adjust specified variable

maintenance functions.

elements of an item to bring about optimum or desired

c. Section III lists the special tools and test

performance.

equipment required for each maintenance function as

F - CALIBRATE. To determine and cause

referenced from Section II (Not Applicable).

corrections to be made or to be adjusted on instruments

d. Section IV contains supplemental instructions

or test measuring and diagnostic equipments used in

or explanatory notes for a particular maintenance

precision measurement. Consists of comparisons of two

function (Not Applicable).

instruments, one of which is a certified standard of

known accuracy, to detect and adjust any discrepancy in

B-2. Explanation of Columns in Section II

the accuracy of the instrument being compared.

G - INSTALL. The act of emplacing, seating, or

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

fixing into position an item, part, or module (component

assigned to each group in a top down breakdown

or assembly) in a manner to allow the proper functioning

sequence. The applicable groups are listed on the MAC

of an equipment or system.

in disassembly sequence beginning with the first group

H - REPLACE. The act of substituting a

removed.

serviceable like type part, subassembly, or module

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

(component or assembly) for an unserviceable

contains a brief description of the components of each

counterpart.

numerical group.

I - REPAIR. The application of maintenance

c. Column (3), Maintenance Functions. This

services (inspect, test, service, adjust, aline, calibrate,

column lists the various maintenance functions (A

or replace) or other maintenance actions (welding,

through K). The lowest maintenance level authorized to

grinding, riveting, straightening, facing, remachining or

perform these functions is indicated by a symbol in the

resurfacing) to restore serviceability to an item by

appropriate column. Work measurement time standards

correcting specific damage, fault, malfunction, or failure

(the active repair time required to perform the

in a part, subassembly, module (component or

maintenance function) as shown directly below the

assembly), end item, or system.

symbol identifying the maintenance level. The symbol

J - OVERHAUL. That maintenance effort

designations for the various maintenance levels are as

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

follows:

completely

serviceable/operational

condition

C - Operator or crew

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

0 - Organizational maintenance

appropriate technical publication. Overhaul is normally

F - Direct support maintenance

the highest degree of maintenance performed by the

H - General support maintenance

Army. Overhaul does not normally return an item to like

D - Depot maintenance

new condition.

The maintenance functions are defined as follows:

K - REBUILD. Consists of those services/actions

A - INSPECT. To determine serviceability of an

necessary for the restoration of unserviceable

item by comparing its physical, mechanical, and

equipment to a like new condition in accordance with

electrical characteristics with established standards

through examination.

B - TEST. To verify serviceability and detect in-

B-1