APPENDIX B MAINTENANCE ALLOCATION - TM-11-6665-230-120049

TM 11-6665-230-12

APPENDIX B

MAINTENANCE ALLOCATION

SECTION I INTRODUCTION

B-1. GENERAL.

This appendix provides a summary of the maintenance operations for the AN/PDR-27R. It authorizes

categories of maintenance for specific equipment required to perform each function. This appendix may

be used as an aid in planning maintenance operations.

B-2. MAINTENANCE FUNCTION.

Maintenance functions will be limited to and defined as follows:

a. INSPECT - To determine the serviceability of an item by comparing its physical, mechanical,

and/or electrical characteristics with established standards through examination.

b. TEST - To verify serviceability and to detect incipient 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 (decontaminate), to preserve, to drain, to paint, or to replenish fuel, lubricants, hydraulic fluids, or

compressed air supplies.

d. ADJUST - To maintain, within prescribed limits, by bringing into proper or exact position, or by

setting the operating characteristics to the specified parameters.

e. ALIGN - To adjust specified variable elements of an item to bring about optimum or desired per-

formance.

f. CALIBRATE -To determine and cause corrections to be made or to be adjusted on instruments or

test measuring and diagnostic equipments used in precision measurement. Consists of comparisons of

two instruments, one of which is a certified standard of known accuracy, to detect and adjust any

discrepancy in the accuracy of the instrument being compared.

g. INSTALL - The act of emplacing, seating, or fixing into position an item, part, module (compo-

nent or assembly) in a manner to allow the proper functioning of the equipment or system.

h. REPLACE - The act of substituting a serviceable like type part, subassembly, or module (compo-

nent or assembly) for an unserviceable counterpart.

i. REPAIR - The application of maintenance services (inspect, test, service, adjust, align, calibrate,

replace) or other maintenance actions (welding, grinding, riveting, straightening, facing, remachining, or

resurfacing) to restore serviceability to an item by correcting specific damage, fault, malfunction, or

failure in a part, subassembly, module (component or assembly), end item, or system.

j. OVERHAUL - That maintenance effort (service/action) necessary to restore an item to completely

serviceable/operational condition as prescribed by maintenance standards (i.e., DMWR) in appropriate

technical publications. Overhaul is normally the highest degree of maintenance performed by the Army.

Overhaul does not normally return an item to like new condition.

k. REBUILD - Consists of those services/operations necessary for the restoration of unserviceable

equipment to a like new condition in accordance with original manufacturing standards. Rebuild is the

highest degree of materiel maintenance applied to Army equipment. The rebuild operation includes the

act of returning to zero those age measurements (hours, miles, etc.) considered in classifying Army

equipments/components.

B-3. COLUMN ENTRIES.

a. Column 1, GROUP NUMBER - Column 1 lists group numbers, the purpose of which is to identify

components, assemblies, subassemblies, and modules with the next higher assembly.

b. Column 2, COMPONENT/ASSEMBLY - Column 2 contains the noun names of components,

assemblies, subassemblies, and modules for which maintenance is authorized.

B-1