TM 9-6115-664-13&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 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.
Remove/Install. To remove and install the same item when required to perform service or other maintenance
functions. Install may be the act of emplacing, 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.
h.
Replace. To remove an unserviceable item and install a serviceable counterpart in its place. "Replace" is
authorized by the MAC and assigned maintenance level is shown as the 3rd position code of the SMR code.
i.
Repair.
The
application
of
maintenance
services(1)
including
fault
location/troubleshooting(2),
removal/installation, and disassembly/assembly(3) procedures, and maintenance actions(4) to identify troubles and
restore serviceability to an item by correcting specific damage, fault, malfunction, or failure in a parts, subassembly,
module (component or assembly), end item, or system.
j.
Overhaul. That maintenance effort (service/action) prescribed to restore and item to a completely
serviceable/operational condition as required by maintenance standards in appropriate technical publications (i.e.,
DMWR). 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 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 (e.g., hours/miles) considered in classifying Army equipment/components.
(1)
Services - Inspect, test, service, adjust, align, calibrate, and/or replace.
(2)
Fault location/troubleshooting - The process of investigating and detecting the cause of equipment malfunctioning;
the act of isolating a fault within a system or unit under test (UUT).
(3)
Disassembly/assembly - The step-by-step breakdown (taking apart) of a spare/functional group coded item to the
level of its least component, that is assigned an SMR code for the level of maintenance under consideration (i.e.,
identified as maintenance significant).
(4)
Actions - Welding, grinding, riveting, straightening, facing, machining, and/or resurfacing.
B-2
