TM 5-6675-250-20
APPENDIX B
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
B - 1 . G E N E R A L
a.
This section provides a general explanation of all maintenance and repair functions authorized
at various maintenance levels.
b .
The Maintenance Allocation Chart (MAC) in Section II designates overall responsibility for the
performance of maintenance functions on the identified end item or component. The implemen-
tation of the maintenance functions upon the end item or component will be consistent with the
a s s i g n e d m a i n t e n a n c e f u n c t i o n s.
c.
Section Ill contains supplemental instructions or explanatory notes for a particular maintenance
f u n c t i o n .
B - 2 . M A I N T E N A N C E F U N C T I O N S
a.
b .
c.
d .
e .
f .
g.
Inspect. To determine the serviceability of an item by comparing its physical, mechanical and/
or electrical characteristics with established standards through examination.
Test. To verify serviceability and detect incipient failure by measuring the mechanical or elec-
trical characteristics of an item and comparing those characteristics with prescribed standards.
Service. Operations required periodically to keep an item in proper operating condition, i.e., to
clean (decontaminate), to preserve, to drain, to paint, or to replenish fuel, lubricants, hydraulic
fluids, or compressed air supplies.
A d j u s t . T o m a i n t a i n , w i t h i n p r e s c r i b e d l i m i t s , b y b r i n g i n g i n t o p r o p e r o r e x a c t p o s i t i o n , o r by
setting the operating characteristics to specified parameters.
A l i g n . T o a d j u s t s p e c i f i e d v a r i a b l e e l e m e n t s o f a n i t e m t o b r i n g a b o u t o p t i m u m o r d e s i r e d
p e r f o r m a n c e .
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 compari-
sons 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.
Install. The act of emplacing, seating, or fixing into position an item, part, or module (compo-
nent or assembly) in a manner to allow the proper functioning of the equipment.
B-1
