TM 10-6630-222-12&P
0020 00
OPERATOR AND UNIT MAINTENANCE MANUAL
(INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)
FOR WATER QUALITY ANALYSIS SET: PURIFICATION (WQAS-P)
SUPPORTING INFORMATION
MAINTENANCE ALLOCATION CHART INTRODUCTION
MAINTENANCE FUNCTIONS. - continued
9.
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
part, subassembly, module (component or assembly), end item, or system.
NOTE
The following definitions are applicable to the "repair" maintenance function:
Services ---Inspect, test, service, adjust, align, calibrate, and/or replace.
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)
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 (e.g., identified as maintenance significant).
Actions - Welding, grinding, riveting, straightening, facing, machining, and/or resurfacing.
10.
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.
11.
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 (e.g., hours/miles) considered in classifying Army equipment/components.
EXPLANATION OF COLUMNS IN THE MAC
Column 1. Group Number. Column 1 lists functional group code numbers, the purpose of which is to identify maintenance
significant components, assemblies, subassemblies, and modules with the next higher assembly.
Column 2. Component/Assembly. Column 2 contains the names of components, assemblies, subassemblies, and modules
for which maintenance is authorized.
Column 3. Maintenance Functions. Column 3 lists the functions to be performed on the item listed in column 2. (For
detailed explanation of these functions refer to "Maintenance Functions" outlined above.)
Column 4. Maintenance Level. Column 4 specifies each level of maintenance authorized to perform each function listed in
column 3, by indicating work time required (expressed as man-hours in whole hours or decimals) in the appropriate
subcolumn. This work-time figure represents the active time required to perform that maintenance function at the indicated
level of maintenance. If the number or complexity of the tasks within the listed maintenance function vary at different
maintenance levels, appropriate work-time figures are to be shown for each level. The work-time figure represents the
average time required to restore an item (assembly, subassembly, component, module, end item, or system) to a serviceable
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