APPENDIX B MAINTENANCE ALLOCATION CHART

APPENDIX B

MAINTENANCE ALLOCATION CHART

Section 1. INTRODUCTION

B - Test: To verify serviceability and detect

B-1. General

incipient failure by measuring the mechanical or

electrical 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 clean,

b. Section II designates overall responsibility for

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 limits,

measurement time required to perform the functions by

by bringing into proper or exact position, or by setting

the designated maintenance level. The implementation

the operating characteristics to specified parameters.

of the maintenance functions upon the end item or

E - Align: To adjust specified variable elements of

component will be consistent with the assigned

an item to bring about optimum or desired performance.

maintenance functions.

F - Calibrate: To determine and cause corrections

c. Section III lists the special tools and test

to be made or to be adjusted on instruments or test

equipment required for each maintenance function as

measuring and diagnostic equipments used in precision

referenced from Section II. (Not Applicable).

measurement.

Consists of comparisons of two

d. Section IV contains supplemental instructions

instruments, one of which is a certified standard of

or explanatory notes for a particular maintenance

known accuracy, to detect and adjust any discrepancy in

function. (Not Applicable).

the accuracy of the instrument being compared.

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

B-2

Explanation of Columns in Section II

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

or assembly) in a manner to allow the proper functioning

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

of an equipment or system.

assigned to each group in a top down breakdown

H - Replace: The act of substituting a serviceable

sequence. The applicable groups are listed on the MAC

like type part, subassembly, or module (component

in disassembly sequence beginning with the first group

assembly) for an unserviceable counterpart.

removed.

I - Repair:

The application of maintenance

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

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

contains a brief description of the components of each

or replace) or other maintenance actions (welding,

numerical group.

grinding, riveting, straightening, facing, remachining or

c. Column (3), Maintenance Functions. This

resurfacing) to restore serviceability to an item by

column lists the various maintenance functions (A

correcting specific damage, fault, malfunction, or failure

through K). The lowest maintenance level authorized to

in a part, subassembly, module (component or

perform these functions is indicated by a symbol in the

assembly), end item, or system.

appropriate column. Work measurement time standards

J - Overhaul:

That maintenance

effort

(the active repair time required to perform the

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

maintenance function) are shown directly below the

completely

serviceable/operational

condition

symbol identifying the maintenance level. The symbol

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

designations for the various maintenance levels are as

appropriate technical publication. Overhaul is normally

follows:

the highest degree of maintenance performed by the

C. Operator or crew

Army. Overhaul does not normally return an item to like

O. Organization maintenance.

new condition.

F. Direct support maintenance.

K - Rebuild: Consists of those services/actions

H. General support maintenance

necessary for the restoration of unserviceable

D. Depot maintenance.

equipment to a like new condition in accordance with

The maintenance functions are defined as follows:

original manufacturing standards. Rebuild is the highest

A - Inspect: To determine serviceability of an

degree if maintenance applied to Army equipment.

item by comparing its physical, mechanical, and

electrical characteristics with established standards

through examination.

B-1