Appendix C. MAINTENANCE ALLOCATION

TM 11-6730-235-12

APPENDIX C

MAINTENANCE ALLOCATION

Section I.

INTRODUCTION

straightening, facing, remachining, or resurfacing) to

C-1.

General

restore serviceability to an item by correcting specific

damage, fault, malfunction, or failure in a part,

This appendix provides a summary of the maintenance

subassembly, module (component or assembly), end

operations for PH-637D/PFP. It authorizes categories of

item, or system.

maintenance for specific maintenance functions on

S. Overhaul.

That maintenance effort (service

repairable items and components and the tools and

action) necessary to restore an item to a completely

equipment required to perform each function. This

serviceable/operational condition as prescribed by

appendix may be used as an aid in planning

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

maintenance operations.

technical publications. Overhaul is normally the highest

C-2.

Maintenance Function

degree of maintenance performed by the Army.

Maintenance functions will be limited to and defined as

Overhaul does not normally return an item to like new

follows:

condition.

a. Inspect. To determine the serviceability of an

k. Rebuild.

Consists of those service/actions

item by comparing its physical, mechanical, and/or

necessary for the restoration of unserviceable equipment

electrical characteristics with established standards

to a like new condition in accordance with original

through examination.

manufacturing standards. Rebuild is the highest degree

b. Test. To verify serviceability and to detect

of materiel maintenance applied to Army equipment.

incipient failure by measuring the mechanical or

The rebuild operation includes the act of returning to zero

electrical characteristics of an item and comparing those

those age measurements (hours, miles, etc.) considered

characteristics with prescribed standards.

in classifying Army equipments/components.

c. Service. Operations required periodically to

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

C-3.

Column Entries

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

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

replenish fuel, lubricants, hydraulic fluids, or compressed

numbers, the purpose of which is to identify components,

air supplies.

assemblies, subassemblies, and modules with the next

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

higher assembly.

bringing into proper or exact position, or by setting the

b. Column 2, Component/Assembly. Column 2

operating characteristics to the specified parameters.

contains the noun names of components, assemblies,

e. Align. To adjust specified variable elements of

subassemblies, and modules for which maintenance is

an item to bring about optimum or desired performance.

authorized.

Calibrate. To determine and cause corrections

c. Column , Maintenance Functions. Column 3

to be made or to be adjusted on instruments or test

lists the functions to be performed on the item listed in

measuring and diagnostic equipment used in precision

column 2. When items are listed without maintenance

measurement.

Consists of comparisons of two

functions, it is solely r purpose of having the group

instruments, one of which is a certified standard of

numbers in the MAC and RPSTL coincide.

known accuracy, to detect and adjust any discrepancy in

d. Column 4, Maintenance Category. Column 4

the accuracy of the instrument being compared.

specifies, by the listing of a "work time" figure in the

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

appropriate subcolumn(s), the lowest level of

into position an item, part, module (component or

maintenance authorized to perform the function listed in

assembly) in a manner to allow the proper functioning of

column 3. This figure represents the active time required

the equipment or system.

to perform that maintenance function at the indicated

h. Replace. The act of substituting a serviceable

category of maintenance. If the number or complexity of

like type part, subassembly, or module (component or

the tasks within the listed maintenance function vary at

assembly) for an unserviceable counterpart.

different maintenance categories, appropriate "work

Repair. The application of maintenance services

time" figures win be shown for each category. The

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

other maintenance actions (welding, grinding, riveting,

Change 2 C-1