Appendix C: MAINTENANCE ALLOCATION CHART

TM5-4110-234-14

TO 40R7-5-7-1

APPENDIX C

MAINTENANCE ALLOCATION CHART

Section I INTRODUCTION

C-1. GENERAL

a. This section provides a general explanation of all maintenance and repair functions authorized at various

maintenance levels.

b. The Maintenance Allocation Chart (MAC) in Section II designates overall responsibility for the performance of

maintenance functions on the identified end item or component. The implementation of the maintenance functions upon

the end item or component will be consistent with the assigned maintenance functions.

c. Section III lists the special tools and test equipment required for each maintenance function as referenced from

Section II.

d. Section IV contains supplemental instructions or explanatory notes for a particular maintenance function.

C-2. MAINTENANCE FUNCTIONS

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 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 specified parameters.

e. Aline. To adjust specified variable elements of an item to bring about optimum or desired performance.

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, or module (component or assembly) in a

manner to allow the proper functioning of an equipment or system.

h. Replace. The act of substituting a serviceable like type part, subassembly, or module (component or assembly) for

an unserviceable counterpart.

i. Repair. The application of maintenance services (inspect, test, service, adjust, aline, calibrate, or 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), and item, or system.

j. Overhaul. That maintenance effort (service/actions) necessary to restore an item to a 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.

C-1