I---OVERHAUL: Restore an item to a completely
serviceable
condition
(as
prescribed
by
3. Explanation of Columns in Section III
serviceability standards developed and published
by the commodity commands) by employing
a. Reference Code. This column consists of a
techniques of "Inspect and Repair Only as
number and a letter separated by a dash. The number
Necessary" (IROAN). Maximum use of diagnostic
references the T and TE requirements column on the
and test equipment is combined with minimum
MAC.
disassembly during overhaul. "Overhaul" may be
The letter represents the specific maintenance
assigned to any level of maintenance except
operation the item is to be used with. The letter is
organizational, provided the time, tools, equipment,
representative of columns A through J on the MAC.
repair parts authorization, and technical skills are
b. Maintenance Level. This column shows the
available at that level. Normally, overhaul as
lowest level of maintenance authorized to use the special
applied to end items, is limited to depot
tool or test equipment.
maintenance level.
c. Nomenclature. This column lists the name or
J---REBUILD: Restore to a condition comparable to new identification of the tool or test equipment.
by disassembling to determine the condition of each
d. Tool Number.
This column lists the
component
part
and
reassembling
using
assemblies, manufacturer's code and part number, or Federal stock
serviceable,
rebuilt,
or
new
number, of tools and test equipment.
subassemblies, and parts.
4. Explanation of Columns in Section IV
e. Reference Note. This column, subdivided into
columns K and L, is provided for referencing the
a. Reference Code. This column consists of two
SPECIAL
TOOL
AND
TEST
EQUIPMENT
letters separated by a dash, both of which are references
REQUIREMENTS (sec III) and REMARKS (sec IV) that
to section II. The first letter references column L and the
may be associated with maintenance operations (sec II).
second letter references a maintenance operation,
column A through J.
b. Remarks. This column lists information pertinent
to the maintenance operation being performed as
indicated on the MAC section II.
Section II. MAINTENANCE ALLOCATION CHART
Maintenance levels
Note
Func-
Maintenance operations
reference
tional
Essen-
Group
Component assembly nomenclature
tiality
A
B
C
D
E
F
G
H
I
J
K
L
No.
Service
Adjust
Aline
Cali
Inspect
Test
Re-
Re-
Over-
Re-
T&TE
Re-
brate
place
pair
haul
build
rqmt
marks
01
ENGINE
0100
Engine assembly----------------------------------------
O/C -------------------------------------------
-
O/C
O
F
F
H
D
--------------
A
0105
Valves:
Seats and valves -------------------------------------------------------------------------------------------------------------------------------F
F
---------- ------------- -------------------
B
Tappet, valve --------------------------------------------------------
O---------------------------------------------------------------- F
0106
Engine Lubrication System:
Filter and breather, oil- ---------------------------- O/C---------------------------------------------------------------------------
O
Regulator, pressure --------------------------------------------
---
O-------------------------------------------------------------
O
03
FUEL SYSTEM
0301
Carburetor ----------------------------------------------------------------- O/C ------------------------------------------------------------- O
0302
Fuel pump---------------------------------------------------------------
O/C ------------------------------------------------------------
O
0304
Air cleaner ------------------------------------------------- O/C ----------------------------------------------------------------------------
O
0306
Tanks, Lines, Fittings:
Tank, fuel----------------------------------------
O/C ---------------------------------------------------------------------------- F
0309
Fuel filters ----------------------------------------------
O/C------------------------------------------------------------------------------ O
05
COOLING SYSTEM
0501
Radiator ----------------------------------------------------
O/C------------------------------------------------------------------------------ F
F
0504
Water pump-----------------------------------------------
O/C---------------------------------------------------------------------------
O
F---------------------------------------------------------
C
0505
Fan Assembly:
Belt, V-drive------------------------------------------------------------ O/C-------------------------------------------------------------
O
TAGO 6358A
97