TM 11-6605-202-12/10 5N3-3-10-1
INTRODUCTION (continued)
B-3. Maintenance Functions (continued)
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. Install. The act of emplacing, seating, or fixing into position an item, part, or module (component
or assembly) in a manner to allow the proper functioning of an equipment or system.
h. Replace. The act of substituting a serviceable like type part, subassembly, or module (component
or assembly) for an unserviceable counterpart.
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i. Repair. The application of maintenance services or other maintenance actions to restore service-
ability to an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly,
module (component or assembly), end item, or system.
That maintenance effort (service/action) necessary to restore an item to a completely
Overhaul.
j.
serviceable/operational condition as prescribed 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. Rebuidl. Consists of those services/actions necessary for the restoration of unserviceable equip-
ment 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 (hours/miles, etc.) considered in classifying Army equip-
ments/components.
B-4. Group Number and Component/Assembly (Columns 1 and 2, Respectively)
a. Group Number (Column 1). Column 1 lists group numbers, the purpose of which is to identify com-
ponents, assemblies, subassemblies, and modules with the next higher assembly.
b. Component/Assembly (Column 2). Column 2 contains the noun names of components,
assemblies, subassemblies, and modules for which maintenance is authorized.
B-5. Maintenance Function (Column 3)
Column 3 lists the functions to be performed on the items listed in Column 2.
B-6. Maintenance Categories and Work Times (Column 4)
The maintenance categories (levels) AVUM, AVIM, and DEPOT are listed on the Maintenance Allocation
Chart with individual columns that include the work times for maintenance functions at each
maintenance level. Work time presentations such as "0.1" indicate the average time it requires a
maintenance level to perform a specific maintenance function. If a work time has not been established,
the columnar presentation shall indicate
Maintenance levels higher than the level of
maintenance indicated are authorized to perform the indicated function.
B-4
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