TM 9-6115-653-14&P
C - Service To clean, to preserve, to charge, and to add fuel, lubricants, cooling agents, and air
If it Is desired that elements, such as painting and lubricating, be defined separately, they may be so
listed
D - Adjust To rectify to the extent necessary to bring Into proper operating range
E - Alone To adjust specified variable elements of an item to bring to optimum performance
F - Calibrate To determine the corrections to be made in the readings of instruments or test
equipment used in precise measurement Consists of the comparison of two instruments, one of
which is a ceded standard of known accuracy, to detect and adjust any discrepancy in the accuracy
of the Instrument being compared with the certified standard
G - Install To set up for use in an operational environment such as emplacement, site, or vehicle
H - Replace To replace unserviceable items with serviceable like Items
I - Repair Those maintenance operations necessary to restore an item to serviceable condition
through correction of material damage to a specific failure Repair may be accomplished at each
category of maintenance
J - Overhaul Normally, the highest degree of maintenance performed by the Army in order to
minimize time work in process is consistent with quality and economy of operation It consists of that
maintenance necessary to restore an item to completely serviceable condition as prescribed by
maintenance standard in technical publications for each Item of equipment Overhaul normally does
not return an item to like new, zero mileage, or zero hour condition
K - Rebuild The highest degree of material maintenance It consists of restoring equipment as
nearly as possible to new conditions 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 of the equipment,
or component thereof, has been in use
d.
Symbols The uppercase letter placed in the appropriate column indicates the lowest level at
which that particular maintenance function is to be performed
e.
Tools and Equipment Column 4 This column is provided for referencing by code, the special
tools and test equipment, (Section III required to perform the maintenance functions (Section II)
f.
Remarks Column 5 This column Is provided for referencing by code, the remarks (Section
IV) pertinent to the maintenance functions
C-3 Explanation of Columns in Section III. Tools, Test, and Support Equipment Requirements is
not applicable
C-4 Explanation of Columns in Section IV. Remarks, is not applicable.
C-2
