APPENDIX B MAINTENANCE ALLOCATION CHART

APPENDIX B

MAINTENANCE ALLOCATION CHART

Section I. INTRODUCTION

Calibrate. To determine the corrections to be

B-1. General

made in the readings of instruments or test

a. This section provides a general explanation

equipment used in precise measurement.

of all maintenance and repair functions authorized at

Consists of the comparison of two instruments

various maintenance levels.

one which is a certified standard of known

b. Section II designates overall responsibility for

accuracy. to detect and adjust any discrepancy in

the performance of maintenance functions on the

the accuracy of the instrument being compared

identified end item or component. The implementation of

with the certified standard.

the maintenance functions upon the end item or

Install. To set lip for use in an operational

environment such as an emplacement, site, or

component will be consistent with the assigned

vehicle.

maintenance functions.

Replace. To replace unserviceable items with

Section

III

contains

supplemental

serviceable like items.

instructions, explanatory notes and / or illustrations

Repair.

Those maintenance operations

required for a particular maintenance function.

necessary to restore an item to serviceable

B-2. Explanation of Columns in Section II

condition through correction of material damage

a. Group Number. Column (1). The assembly

or a specific failure. Repair may be accomplished

group is a numerical group assigned to each assembly in

at each category of maintenance.

Overhaul.

Normally the highest degree of

a top down breakdown sequence.

The applicable

maintenance performed by the Army in order to,

assembly groups are listed on the MAC in disassembly

minimize time work in process is consistent with

sequence beginning with the first assembly removed in a

quality and economy of operation. It consists of

top down disassembly sequence.

that maintenance necessary to restore an item to

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

completely serviceable condition as prescribed

contains a brief description of the components of each

by maintenance standards in technical

assembly group.

publications for each item of equipment.

c. Maintenance Functions, Column (3). This

Overhaul normally does not return an item to like

new zero mileage. or zero hour condition.

column lists the various maintenance functions (A

Rebuild.

The highest degree of material

through K) and indicates the lowest maintenance

maintenance. It consists of restoring equipment

category authorized to perform these functions. The

as nearly as possible to new condition in

symbol designations for the various maintenance

accordance

with

original

manufacturing

categories are as follows:

standards. Rebuild is performed only when

C-Operator or crew

required by operational considerations or other

O-Organizational maintenance

paramount factors and then only at the depot

F-Direct support maintenance

maintenance category. Rebuild reduces to zero

H-General support maintenance

the hours or miles the equipment, or component

thereof has been in use.

D-Depot maintenance

d. Tools and Equipment. Column (4). This

The maintenance functions are defined as follows:

column is provided for referencing by code any special

Inspect. To determine serviceability of an item

by comparing its physical, mechanical, and

tools and test equipment, required to perform the

electrical

characteristics

with

established

maintenance functions (sec. II)

standards.

e. Remarks. Column (5). This column is

Test. To verify serviceability and to detect

provided for referencing by code the remarks (sec. III)

electrical or mechanical failure by use of test

pertinent to the maintenance functions.

equipment.

B-3. Explanation of Columns in Section III

Service. To clean, to preserve, to charge, and to

a. Reference Code. This column consists of

add fuel, lubricants, cooling agents, and air. If it

two letters separated by a dash, both of which are

is desired that elements, such as painting and

lubricating, be defined separately, they may be

references to Section II. The first letter references

so listed.

column (5) and the second letter references a

Adjust. To rectify to the extent necessary to

maintenance function, column (3), A through K.

bring into proper operating range.

Align. To adjust specified variable elements of

an item to bring to optimum performance.

B-1