Operating instructions

TM 11-5865-229-12
b. Only the lowest category of maintenance authorized to perform a maintenance function is indicated.
If the lowest maintenance category cannot perform all tasks of any single maintenance function (e.g., test repair),
then the higher maintenance level(s) that can accomplish additional tasks will also be indicated.
c. A maintenance function assigned to a maintenance category will automatically be authorized to be
performed at any higher maintenance category.
d. A maintenance function that cannot be performed at the assigned category of maintenance for any
reason may be evacuated to the next higher maintenance category. Higher maintenance categories will perform
the maintenance functions of lower maintenance categories when required or directed by the commander that
has the authority to direct such tasking.
e. The assignment of a maintenance function will not be construed as authorization to carry the related
repair parts or spares in stock. Information to requisition or otherwise secure the necessary repair parts will
be as specified in the associated Repair Parts and Special Tools List (RPSTL).
f. Normally there will be no deviation from the assigned level of maintenance. In cases of operational
necessity, maintenance functions assigned to a maintenance level many, on a one-time basis and at the request
of the lower maintenance level, be specifically authorized by the maintenance officer of the level of maintenance
to which the function is assigned. The special tools, equipment, etc. required by the lower level of maintenance
to perform this function will be furnished by the maintenance level to which the function is assigned. This
transfer of a maintenance function to a lower maintenance level does not relieve the higher maintenance level
of the responsibility for the function. The higher level of maintenance will provide technical supervision and
inspection of the function being performed at the lower level.
g. Changes to the Maintenance Allocation Chart will be based on continuing evaluation and analysis by
responsible technical personnel and on reports received from field activities.
B-3 MAINTENANCE FUNCTIONS.
Maintenance functions will be limited to and defined as follows:
a. Inspect.
To determine the Serviceability of an item by comping its physical mechanical, and/or
electrical characteristics with established standards through examination.
b. Test.
To verify serviceability and to detect potential failure by measuring the mechanical or electrical
characteristics of an item and comparing those characteristics with prescribed standards.
c. Service.
Operations required periodically to keep an item in proper operating condition; i.e., to clean,
preserve, paint.
d. Adjust.
Maintain within prescribed limits by bringing into proper or exact position, or by setting the
operating characteristics to the specified parameters.
e. Align.
To adjust specified variable elements of an item to bring about optimum or desired performance.
f. Calibrate.
To determine and cause corrections to be made or to be adjusted on instruments or test,
measurement and diagnostic equipment used in precision measurement. Consists of the comparison 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 emplacing, seating, or fixing into position an item, part, module
(component or assembly) in a manner to allow the proper functioning of the equipment/system.
h. Replace.
The act of substituting a serviceable like-type part, subassembly, module (component or
assembly) for an unserviceable counterpart.
i. Repair.
TO restore damageed, wornout, or malfunctioning equipment to a serviceable, usable, or operable
condition.
B-3