Maintenance Functions:

TM 10-3990-203-13&P

f. Calibrate: To determine and cause corrections to be made or to be

adjusted on instruments or test measuring and diagnostic equipment used in

Consists of comparisons of two instruments, one of

precision measurement.

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, sub-

assembly or module (component or assembly) for an unserviceable counterpart

i. Repair: The application of maintenance services (inspect, test,

service, adjust, align, calibrate, or replace) or other maintenance actions

(welding, grinding, riveting, straightening, facing, remachining, or re-

surfacing) to restore serviceability to an item by correcting specific damage,

fault, malfunction, or failure in a part, subassembly, module (components or

assembly), and item or system.

j. Overhaul: That maintenance effort (service/action) 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.

k. Rebuild: Consists of those services/actions necessary for the resto-

ration of unserviceable equipment to a like new condition in accordance with

Rebuild is the highest degree of materiel

original manufacturing standards.

The rebuild operation includes the

maintenance applied to Army equipment.

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

in classifying Army equipment/components.

B-14