APPENDIX B MAINTENANCE ALLOCATION - TM-11-6625-1646-250103

T.O. 12P4-2APX-192

NAVAIR 16-35TS1843-1

TM 11-6625-1646-25

APPENDIX B

MAINTENANCE ALLOCATION

(ARMY USE ONLY)

Section I. INTRODUCTION

not limited to welding, grinding, riveting, straighten-ing,

B-1.

General

and replacement of parts other than the trial and error

replacement of running spare type items such as fuses,

This appendix provides a summary of the

lamps. or electron tubes.

maintenance operations covered in the equipment

OVERHAUL. Normally. the highest degree

literature for the TS-1843A/APX. It authorizes categories

of maintenance performed by the Army In order to

of maintenance for specific maintenance functions on

minimize time work in process is consistent with quality

repairable items and components and the tools and

and economy of operation.

It consists of that

equipment required to perform each function. This

maintenance necessary to restore an item to completely

appendix may be used as an aid in planning

serviceable condition as prescribed by maintenance

maintenance operations.

standards in technical publications for each item of

equipment. Overhaul normally does not re-turn an item

B-2.

Maintenance Functions

to like new, zero mileage, or zero hour condition.

k. REBUILD. The highest degree of material

Maintenance functions will be limited to and

maintenance. It consists of restoring equipment as

defined as follows:

a. INSPECT. To determine serviceability of

nearly as possible to new condition in accordance with

an item by comparing its physical, mechanical, and

original manufacturing standards. Rebuild is per-formed

electrical characteristics with established standards.

only when required by operation considerations or other

b. TEST. To verify serviceability and to detect

paramount factors and then only at the depot

incipient electrical or mechanical failure by use of special

maintenance category. Rebuild reduces to zero the

equipment such as gages, meters.

etc.

This is

hours or miles the equipment. or component thereof.

accomplished with external test equipment and does not

has been in use.

include operation of the equipment and operator type

SYMBOLS. The uppercase letter placed in

tests using internal motors or indicating devices.

the appropriate column indicates the lowest level at

which that particular maintenance function is to be per-

c. SERVICE. To clean. to preserve. to

charge. and to add fuel, lubricants, cooling agents, and

formed.

air. If it is desirable that elements, such as painting and

lubricating. be defined separately. they may be so

B-3.

Explanation of Format

listed.

d. ADJUST. To rectify to the extent necessary

Column 1, group number. Not applicable.

to bring into proper operating range.

e. ALIGN. To adjust two or more components

b. Column 2, Functional group: Column 2 lists

or assemblies of an electrical or mechanical system so

the noun names of components, assemblies.

that their functions are properly synchronized. This does

subassemblies and modules on which maintenance is

not include setting the frequency control knob of radio

authorized.

receivers or transmitters to the desired frequency.

CALIBRATE. To determine the corrections

c. Column 3, maintenance functions. Column

to be made in the readings of instruments or test equip-

3 lists the maintenance category at which performance of

ment used in precise measurement. Consists of the

the specific maintenance function is authorized.

comparison of two instruments, one of which is a

Authorization to perform a function at any category also

certified standard of known accuracy, to detect and

includes authorization to perform that function at higher

adjust any discrepancy in the accuracy of the instrument

categories. The codes used represent the various

being compared with the certified standard.

maintenance categories as follows:

g. INSTALL.

To set up for use in an

operational environment such as an encampment, site,

Code

Maintenance Category

or vehicle.

Operator, Crew

h. REPLACE. To replace unserviceable items

Organizational Maintenance

with serviceable like items.

Direct Support Maintenance

REPAIR. To restore an item to serviceable

General Support Maintenance

condition through correction of a specific failure or

Depot Maintenance

unserviceable condition. This function includes, but is

B-1