j. Overhaul. Normally, the highest degree of maintenance performed by
the Army in order to minimize tine work in process is consistent with quality
and economy of operation. It consists of that maintenance necessary to re-
store an item to completely serviceable condition as prescribed by mainte-
nance standards in technical publications for each item of equipment. Over-
haul normally does not return an item to like new, zero mileage, or zero
_. Rebuild. The highest degree of materiel maintenance. It consists of
restoring equipment as nearly as possible to new condition in accordance with
original manufacturing standards. Rebuild is performed only when required
by operational considerations or other paramount factors and then only at
the depot maintenance category. Rebuild reduces to zero the hours or miles
the equipment, or component thereof, has been in use.
Symbols. The uppercase letter placed in the appropriate column in-
dicates the lowest level at which that particular maintenance function is
to be performed.
Explanation of Columns.
Listed below is an explanation of the columns shown in the maintenance
a. Column 1, Group Number. Column 1 lists group numbers, the purpose
of which is to identify components, assemblies , subassemblies and modules
with the next higher assembly.
Column 2, Functional Group. Column 2 lists the noun names of com-
ponents, assemblies, subassemblies and modules on which maintenance is
c. Column 3, Maintenance Functions. Column 3 lists the lowest level at
which that particular maintenance function is to be performed.
d. Column 4,Tools and Equipment. This column shall be used to specify,
by code, those tools and test equipment required to perform the designated
e. Column 5, Remarks.