APPENDIX B MAINTENANCE ALLOCATION - TM-11-5820-489-200031

TM 11-5820-489-20

TO 31R4-2GRA6-32

APPENDIX B

MAINTENANCE ALLOCATION

Section I. INTRODUCTION

B-1. GENERAL

This appendix provides a summary of the maintenance operations for the AN/GRA-6. It

authorizes categories of maintenance for specific maintenance functions on repairable items and

components and the tools and 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 stan-

dards.

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. ALINE. To adjust specified variable elements of an item to bring about optimum or desired

performance.

f. CALIBRATE. To determine and perform corrections and adjustments on instruments

or test measuring and diagnostic equipment used in precision measurement. Con-

sists 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, or module (com-

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

h. REPLACE. The act of substituting a serviceable part," subassembly, or module

(component or assembly) for an unserviceable counterpart.

L REPAIR. The application of maintenance services (inspect, test, service, adjust, aline,

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 part, subassembly, module (component or assembly), end item, or

system.

j. OVERHAUL. That maintenance effect (service/action) necessary to restore an item to a com-

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

appropriate technical publications. Overhaul is normally the highest degree of maintenance per-

formed by the Army. Overhaul does not normally return an item to like new condition.

k. REBUILD. Consists of those services/actions 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-1