EXPLANATION OF COLUMNS IN THE MAC, SECTION II

TM 5-4120-356-14

To remove and install the same item

when required to per-

g . Remove/Install.

f o r m service or other maintenance functions.

Install may be the

act of emplacing,

s e a t i n g , or fixing into position, a spare, repair part, or module

(component or assem-

b l y ) in a manner to allow the proper functioning of an equipment

or system.

h. Replace.

To remove an unserviceable item and install a serviceable counter-

p a r t in its place. "Replace" is authorized by the MAC and is shown as the 3rd posi-

tion code in the SMR code.

i . R e p a i r . T h e a p p l i c a t i o n o f m a i n t e n a n c e s e r v i c e s , including fault loca-

t i o n / t r o u b l e s h o o t i n g 3, removal/installation, and disassembly/assembly4 p r o c e d u r e s ,

a n d m a i n t e n a n c e a c t i o n s5 t o i d e n t i f y t r o u b l e s a n d r e s t o r e s e r v i c e a b i l i t y t o a n i t e m

b y correcting specific damage, fault, malfunction, or failure in a part, subassembly,

m o d u l e (component or assembly), end item, or system.

j . Overhaul. T h a t maintenance effort (service/action) prescribed to restore

a n item to a completely serviceable, operational conditioner as required by maintenance

s t a n d a r d s in appropriate technical publications (i.e., DMWR). Overhaul is normally

t h e highest degree of maintenance performed by the Army. Overhaul does not normally

r e t u r n an item to like new condition.

k . Rebuild. Consists of those services/actions necessary for the restoration

o f unserviceable equipment to a like new condition in accordance with original man-

u f a c t u r i n g standards.

Rebuild is the highest degree of materiel maintenance applied

t o Army equipment.

The rebuild operation includes the act of returning to zero those

a g e measurements (hours/miles, etc.) considered in classifying Army equipment/compo-

nents.

B-3.

EXPLANATION OF COLUMNS IN THE MAC, SECTION II

a . Column 1, Group Number. C o l u m n 1 lists functional group code numbers,

t h e purpose of which is to identify maintenance significant components, assemblies,

s u b a s s e m b l i e s , and modules with the next higher assembly.

b . Column 2, Component/Assembly. Column 2 contains the names of components,

a s s e m b l i e s , subassemblies, and modules for which maintenance is authorized.

c . Column 3, Maintenance Function. C o l u m n 3 lists the function to be per-

f o r m e d on the item listed in Column 2. (For detailed explanation of these functions,

s e e paragraph B-2.)

Services - inspect, test, service, adjust, aline, calibrate, and/or replace.

F a u l t locate/troubleshoot The process of investigating and detecting the

c a u s e of equipment malfunctioning; the act of isolating a fault within a system or

u n i t under test (UUT).

Disassemble/assemble - e n c o m p a s s e s the stepby-step taking apart (or break-

d o w n ) of a spare/functional group coded item to the level of its least componency

i d e n t i f i e d as maintenance significant (i.e., assigned SMR code) for the category of

m a i n t e n a n c e under consideration.

Actions - welding, grinding, riveting, straightening, facing, remachinery,

a n d / o r resurfacing.

B-2