B-3 MAINTENANCE FUNCTIONS
Maintenance functions will be limited to and defined as follows:
To determine the serviceability of an item by comparing its phy-
sical, mechanical and/or electrical characteristics with established standards
through examination (e.g., by sight, sound or feel).
To verify serviceability by measuring the mechanical, pneumatic,
hydraulic or electrical characteristics of an item and comparing those character-
istics with prescribed standards.
Operations required periodically to keep an item in proper oper-
ating condition, i.e., to clean (includes decontaminate, when required), to pre-
serve, to drain, to paint or to replenish fuel, lubricants, chemical fluids or
To maintain or regulate, within prescribed limits, by bringing
into proper or exact positions or by setting the operating characteristics to speci-
To adjust specified variable elements of an item to bring about
optimum or desired performance.
To determine and cause corrections to be made or to be ad-
justed on instruments or test, measuring and diagnostic equipments used in precision
Consists of comparisons of two instruments, one of which is a certi-
fied standard of known accuracy, to detect and adjust any discrepancy in the accura-
cy of the instrument being compared.
To remove and install the same items when required to
perform service or other maintenance functions.
Install may be the act of emplac-
ing, seating or fixing into position a spare, repair part or module (component or
assembly) in a manner to allow the proper functioning of an equipment or system.
To remove an unserviceable item and install a serviceable coun-
terpart in its place.
"Replace" is authorized by the MAC and is shown as the third
position code of the SMR code.