APPENDIX B MAINTENANCE ALLOCATION CHART

TM 5-6350-262-14/7/NAVELEX 0967-466-0970/TO 31S9-4-28-1

APPENDIX B

MAINTENANCE ALLOCATION CHART

Section I. INTRODUCTION

D. Adjust. To maintain within prescribed limits by

B-1. General.

bringing into proper or exact position or by setting the

a. This section provides a general explanation of all

operating characteristics to specified parameters.

maintenance and repair functions authorized at various

E. Align. To adjust specified variable element of an

maintenance levels.

item to bring about optimum or desired performance.

b. Section II designates overall responsibility for the

F. Calibrate. To determine and cause corrections

performance of maintenance functions on the identified

to be made or to be adjusted on instruments or test

end item or component and the work measurement time

measuring and diagnostic equipment used in precision

required to perform the functions by the designated

measurement.

Consists of comparisons of two

maintenance level.

The implementation of the

instruments, one of which is a certified standard of

maintenance functions upon the end item or component

known accuracy, to detect and adjust any discrepancy in

will be consistent with the assigned maintenance

the accuracy of the instrument being compared.

functions.

G. Install. The act of emplacing, seating, or fixing

B-2. EXPLANATION OF COLUMNS IN SECTION II.

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

a. Column 1.

Group Number.

A number is

assembly) in a manner to allow the proper functioning of

assigned to each group in sequence. The applicable

an equipment or system.

groups are listed on the MAC in disassembly sequence

H. Replace. The act of substituting a serviceable

beginning with the first group removed.

like type part, subassembly, or module (component or

b. Column 2. Functional Group. This column

assembly) for an unserviceable counterpart.

contains a brief description of the components of each

I. Repair. The application of maintenance services

numerical group.

(inspect, test, service, adjust, align, calibrate, or replace)

c. Column 3. Maintenance Functions. This column

or other maintenance actions (welding,

grinding,

lists the various maintenance functions (A through K}

reveting,

straightening,

facing,

remachining

The lowest maintenance level authorized to perform

resurfacing) to restore serviceability to an item by

these functions is indicated by a symbol in the

correcting specific damage, fault, malfunction, or failure

appropriate column. Work measurement time standards

in a part, subassembly, modure (component or

(the active repair time to perform the maintenance

assembly), end item, or system.

function) are shown directly below the symbol identifying

J. Overhaul

That

maintenance

effort

the maintenance level. The symbol designations for the

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

various maintenance levels are as follows:

completely

serviceable/operational

condition

C. Operator or crew

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

O. 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 item by

necessary for the restoration

of unserviceable

comparing its physical, mechanical, and electrical

equipment to a like new condition in accordance with

characteristics with established standards through

original manufacturing standards. Rebuild is the highest

examination.

degree of materiel maintenance applied to Army

B. Test. To verify serviceability and detect probable

equipment. The rebuild operation includes the

failure by measuring the mechanical or electrical

characteristics of an item and comparing those

characteristics with prescribed standards.

C. Service. Operations required periodically to keep

an item in proper operating condition, i.e., to clean, to

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

lubricants, hydraulic fluids, or compressed air supplies.

B-1