APPENDIX C MAINTENANCE ALLOCATION CHART

APPENDIX C

MAINTENANCE ALLOCATION CHART

Section I. INTRODUCTION

F--Calibrate To determine the corrections to be made

C-1. General

in the readings of instruments or test

a. This section provides a general explanation of

equipment used in precise measurement.

all maintenance and repair functions authorized at

Consists of the comparison of two

various maintenance levels.

instruments, one of which is a certified

b. Section II designates overall responsibility fot

standard of known accuracy, to detect and

the performance of maintenance functions on the

adjust any discrepancy in the accuracy of

identified end item or component. The implementation

the instrument being compared with the

of the maintenance functions upon the end item or

certified standard.

component will be consistent with the assigned

G--Install:

To set up for use in an operational

maintenance functions.

environment such as an emplacement,

c. Section III is not applicable.

site, or vehicle.

d. Section IV is not applicable.

H--Replace: To replace unserviceable items with

C-2. Explanation of Columns in Section II

serviceable like items.

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

I--Repair:

Those

maintenance

operations

group is a numerical group assigned to each assembly

necessary to restore an item to

in a top down breakdown sequence. The applicable

serviceable condition through correction

assembly groups are listed on the MAC (Maintenance

of material damage or a specific failure.

Allocation Chart) in disassembly sequence beginning

Repair may be accomplished at each

with the first assembly removed in a top down

category of maintenance.

disassembly sequence.

J--Overhaul: Normally, the highest degree of

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

maintenance performed by the Army in

contains a brief description of the components of each

order to minimize time work in process is

assembly group.

consistent with quality and economy of

c. Maintenance Functions, Column (3).

This

operation. It consists of that maintenance

column lists the various maintenance functions (A

necessary to restore an item to

through K) and indicates the lowest maintenance

completely serviceable condition as

category authorized to perform these functions. The

prescribed by maintenance standards in

symbol designations for the various maintenance

technical publications for each item of

categories are as follows:

equipment. Overhaul normally does not

return an item to like new, zero mileage,

C--Operator or crew

or zero hour condition.

O--Organizational maintenance

K--Rebuild: The

highest

degree

materiel

F--Direct support maintenance

H--General support maintenance

maintenance.

It consists of restoring

D--Depot maintenance

equipment as nearly as possible to new

condition in accordance with original

The maintenance functions are defined as follows:

manufacturing standards.

Rebuild is

performed only when required

A--Inspect: To determine serviceability of an item by

operational

considerations or other

comparing its physical, mechanical, and

paramount factors and then only at the

electrical characteristics with established

depot maintenance category.

Rebuild

standards.

reduces to zero the hours or miles the

B--Test:

To verify serviceability and to detect

equipment, or component thereof, has

electrical or mechanical failure by use of

been in use.

test equipment.

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

C--Service: To clean, to preserve, to charge, and to

column is provided for referencing by code the special

add fuel, lubricants, cooling agents, and

tools and test equipment, (sec. III) required to perform

air. If it is desired that elements such as

the maintenance functions (sec. II).

painting and lubricating, be defined

separately, they may be so listed.

D--Adjust: To rectify to the extent necessary to bring

into proper operating range.

E--Aline:

To adjust specified variable elements of

an item to bring to optimum performance.

C-1