TM 11-5805-424-15/NAVELEX 0967-220-9010/TO 31W2-2G-41
Section I. INTRODUCTION
g. Install. The act of emplacing, seating, or fixing
This appendix provides a summary of the maintenance
into position an item, part, module (component or
operations for MD-674(P)/G. It authorizes categories of
assembly) in a manner to allow the proper functioning of
maintenance for specific maintenance functions on
the equipment or system.
repairable items and components and the tools and
h. Replace. The act of substituting a serviceable
equipment required to perform each function. This
like type part, subassembly, or module (component or
appendix may be used as an aid in planning mainte-
assembly) for an unserviceable counterpart.
The application of maintenance
services (inspect, test, service, adjust, align, calibrate,
B-2. Maintenance Function
replace) or other maintenance actions (welding,
Maintenance functions will be limited to and defined as
grinding, riveting, straightening, facing, remachining, or
resurfacing) to restore serviceability to an item by
a. Inspect. To determine the serviceability of an
correcting specific damage, fault, malfunction, or failure
item by comparing its physical, mechanical, and/or
in a part, subassembly, module (component or
electrical characteristics with established standards
assembly), end item, or system.
j. Overhaul. That maintenance effort (service/
b. Test. To verify serviceability and to detect
action) necessary to restore an item to a completely
incipient failure by measuring the mechanical or
serviceable/operational condition as prescribed by
electrical characteristics of an item and comparing those
maintenance standards (i.e., DMWR) in appropriate
characteristics with prescribed standards.
technical publications. Overhaul is normally the highest
c. Service. Operations required periodically to
degree of maintenance performed by the Army.
keep an item in proper operating condition; i.e., to clean
Overhaul does not normally return an item to like new
(decontaminate), to preserve, to drain, to paint, or to
k. Rebuild. Consists of those services/actions
compressed air supplies.
d. Adjust. To maintain, within prescribed limits, by
equipment to a like new condition in accordance with
bringing into proper or exact position, or by setting the
original manufacturing standards. Rebuild is the highest
operating characteristics to the specified parameters.
degree of materiel maintenance applied to Army
equipment. The rebuild operation includes the act of
e. Align. To adjust specified variable elements of
returning to zero those age measurements (hours,
an item to bring about optimum or desired performance.
miles, etc.) considered in classifying Army equipments/
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
B-3. Column Entries
Consists of comparisons of two
a. Column 1, Group Number. Column 1 lists group
instruments, one of which is a certified standard of
numbers, the purpose of which is to identify
known accuracy, to detect and adjust any discrepancy in
the accuracy of the instrument being compared.