prescribed limits, by bringing into proper or exact
position, or by setting the operating characteristics to
Align. To adjust specified variable elements of
Calibrate. To determine and cause correction to
be made or to be adjusted on instruments or test,
measuring, and diagnostic equipments used in precision
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.
Remove/Install. To remove and install the same
item when required to perform service or other
maintenance function. 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.
Replace. To remove an unserviceable item and
install a serviceable counterpart in its place. "Replace" is
authorized by the MAC and is shown as the 3rd position
code on the SMR code.
procedures and maintenance actions to identify troubles
and restore serviceability to an item by correcting specific
subassembly, module (component or assembly), end
item, or system.
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
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 material maintenance applied to Army equipment.
The rebuild operation includes the act of returning to zero
those age measurements (hour/miles, etc., considered in
classifying Army equipment/components.
THE ARMY MAINTENANCE SYSTEMS (TAMS).
The Army maintenance system consist of four
levels. They are unit, direct support, general support,
and depot levels of maintenance.
The Maintenance Allocation Chart (MAC) will be
the primary tool for assigning tasks within the levels of
the Army Maintenance System.
UNIT LEVEL MAINTENANCE.
Unit maintenance tasks are performed by the
operator, crew, and/or unit maintenance personnel.
Equipment operators and unit mechanics use PMCS to
detect and correct faults.
Maintenance operations assigned to the unit
level normally include the following: (1) Performance of
Inspection by sight and touch of external
and other easily accessible components.
include spot painting), tightening, replacement, and
unserviceable parts and assemblies usually not requiring
special tools or test equipment.
Replacement of modules as authorized by
the Maintenance Allocation Chart.
Unserviceable reparables (properly preserved,
protected, and tagged) that are beyond authorized
capability or capacity to repair will be evacuated through
the appropriate supply support activities for repair or
Performance of unit level maintenance will be
documented using the forms and records defined in DA
PAM 738-750 and DA PAM 738-751. This information
will assist commanders in evaluating and monitoring their
Material condition status readiness reporting will
be per AR 700-138.
DIRECT SUPPORT MAINTENANCE.
Direct support is characterized by:
One stop service to supported units.
Highly mobile, weapon system oriented
Maintenance units will support organic elements of the
division. Attached units will require coordination with
parent unit for support. Non-divisional maintenance units
will provide support on an area basis and back-up
support to divisional support units.