Appendix II. MAINTENANCE ALLOCATION - TM-11-6625-646-150067

TM 11-6625-646-15

APPENDIX III

MAINTENANCE ALLOCATION

Section I. INTRODUCTION

replace) or other maintenance actions (welding,

A3-1. General.

grinding, riveting, straightening, facing, remachining, or

This appendix provides a summary of the maintenance

resurfacing) to restore serviceability to an item by

operations for TS-1894/ASM. It authorizes categories of

correcting specific damage, fault, malfunction, or failure

maintenance for specific maintenance functions on

in a part, subassembly, module (component or

repairable items and components and the tools and

assembly), end item, or system.

equipment required to perform each function. This

appendix may be used as an aid in planning

j. Overhaul. That maintenance effort (service/

maintenance operations.

action) necessary to restore an item to a completely

serviceable/operational condition as prescribed by

A3-2. Maintenance Function.

maintenance standards (i.e., DMWR) in appropriate

Maintenance functions will be limited to and defined as

technical publications. Overhaul is normally the highest

follows:

degree of maintenance performed by the Army.

a. Inspect. To determine the serviceability of an

Overhaul does not normally return an item to like new

condition.

item by comparing its physical, mechanical, and/or

electrical characteristics with established standards

k. Rebuild. Consists of those services/actions

through examination.

necessary for the restoration of unserviceable

b. Test. To verify serviceability and to detect

equipment to a like new condition in accordance with

original manufacturing standards. Rebuild is the highest

incipient failure by measuring the mechanical or

degree of materiel maintenance applied to Army

electrical characteristics of an item and comparing those

equipment. The rebuild operation includes the act of

characteristics with prescribed standards.

returning to zero those age measurements (hours,

c. Service. Operations required periodically to

miles,

etc.)

considered

classifying

Army

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

equipments/components.

(decontaminate), to preserve, to drain, to paint, or to

replenish fuel, lubricants, hydraulic fluids, or

A3-3. Column Entries.

compressed air supplies.

a. Column 1, Group Number. Column 1 lists group

d. Adjust. To maintain, within prescribed limits, by

numbers, the purpose of which is to identify

bringing into proper or exact position, or by setting the

components, assemblies, subassemblies, and modules

operating characteristics to the specified parameters.

with the next higher assembly.

e. Align. To adjust specified variable elements of

b. Column 2, Component Assembly. Column 2

an item to bring about optimum or desired performance.

contains the noun names of components, assemblies,

f. Calibrate. To determine and cause corrections

subassemblies, and modules for which maintenance is

to be made or to be adjusted on instruments or test

authorized.

measuring and diagnostic equipments used in precision

c. Column 3, Maintenance Functions. Column 3

measurement.

Consists of comparisons of two

lists the functions to be performed or the item listed in

instruments, one of which is a certified standard of

column 2. When items are listed without maintenance

known accuracy, to detect and adjust any discrepancy in

functions, it is solely for purpose of having the group

the accuracy of the instrument being compared.

numbers in the MAC and RPSTL coincide.

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

d. Column 4, Maintenance Category. Column 4

into position an item, part, module (component or

specifies, by the listing of a "worktime" figure in the

assembly) in a manner to allow the proper functioning of

appropriate subcolumn(s), the lowest level of

the equipment or system.

maintenance authorized to perform the function listed in

h. Replace. The act of substituting a serviceable

column 3. This figure represents the active time

like type part, subassembly, or module (component or

required to perform that maintenance function at the

assembly) for an unserviceable counterpart.

indicated category of maintenance. If the number or

i. Repair.

The application of maintenance

complexity of the tasks within the

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

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