Change 1 0020 00-2
MODULAR GENERAL PURPOSE TENT SYSTEM (MGPTS) 0020 00
MAINTENANCE ALLOCATION CHART (MAC)
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 placing, 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 3d position
code of the SMR code.
i.
Repair. The application of maintenance services1 including fault location/ trouble-shooting2 ,
removal/installation, and disassembly/assembly3 procedures, and maintenance actions4 to restore
serviceability to an item by correcting specific damage, fault, malfunction, or failure in a apart,
subassembly, module (component or assembly), end item, or system.
j.
Overhaul. That maintenance effort (service/action) prescribed to restore an 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 service/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’s/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 (ULTT).
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.
