APPENDIX B MAINTENANCE ALLOCATION CHART

TM 5-5420-205-14

APPENDIX B

MAINTENANCE ALLOCATION CHART

Section I. INTRODUCTION

electrical characteristics with established standards through

B-1. General

examination.

a. This section provides a general explanation of all

B. Test: To verify serviceability- and detect incipient

maintenance and repair functions authorized at various

failure by measuring the mechanical or electrical

maintenance levels.

characteristics of an item and comparing those

b. Section II designates overall responsibility for the

characteristics with prescribed standards.

performance of maintenance functions on the identified

C. Service: Operations required periodically to keep an

end item or component and the work measurement time

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

required to perform the functions by the designated

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

maintenance level.

The implementation of the

hydraulic fluids, or compressed air supplies.

maintenance functions upon the end item or component

will be consistent with the assigned maintenance functions.

D. Adjust: To maintain within prescribed limits, by

bringing into proper or exact position, or by setting the

c. Section III lists the special tools and test equipment

operating characteristics to specified parameters.

required for each maintenance function as referenced from

Section II.

E. Aline: To adjust specified variable elements of an

item to bring about optimum or desired performance.

d. Section IV contains supplemental instructions or

explanatory notes for a particular maintenance function.

F. Calibrate. To determine and cause corrections to

be made or to be adjusted on instruments or test

B-2. Explanation of Columns in Section II

measuring and diagnostic equipments used in precision

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

measurement.

Consists of comparisons of two

to each group in a top down breakdown sequence. The

instruments, one of which is a certified standard of known

applicable groups are listed on the MAC in disassembly

accuracy, to detect and adjust any discrepancy in the

sequence beginning with the first group removed.

accuracy of the instrument being compared.

b. Column (2), Functional Group.

This column

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

contains a brief description of the components of each

position an item, part, or module (component or assembly)

numerical group.

in a manner to allow the proper functioning of an

c. Column (3), Maintenance Functions. This column

equipment or system.

lists the various maintenance functions (A through K). The

H. Replace: The act of substituting a serviceable like

lowest maintenance level authorized to perform these

type part, subassembly, ox module (component or

functions is indicated by a symbol in the appropriate

assembly; for an unserviceable counterpart.

column. Work measurement time standards (the active

Repair: The application of maintenance services

repair time required to perform the maintenance function)

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

are shown directly below the symbol identifying the

other maintenance actions (welding, grinding, riveting,

maintenance level. The symbol designations for the

straightening, facing, remachining or resurfacing) to restore

various maintenance levels are as follows:

serviceability to an item by correcting specific damage,

C-Operator or crew

fault, malfunction, or failure in a part, subassembly, module

O-Organization maintenance

(component or assembly), end item, or system.

F-Direct support maintenance

J. Overhaul: That maintenance effort (service/action)

H-General support maintenance

necessary to restore an item to a

D-Depot maintenance

The maintenance functions are defined as follows:

A. Inspect: To determine serviceability of an item by

comparing its physical, mechanical, and

B-1