TM 5-4330-217-12
C3
Appendix D is added after Appendix C as follows:
APPENDIX D
MAINTENANCE ALLOCATION CHART
INTRODUCTION
Section I.
D-1.
General
The maintenance functions are defined as fol-
lows:
a. This section provides a general explanation of
A--Inspect. To determine serviceability of an item by comparing
all maintenance and repair functions authorized at
its physical, mechanical, and electrical characteristics with
various maintenance levels.
established standards.
B--Test. To verify serviceability and to detect electrical or me-
b. Section II, designates overall responsibility
chanical failure by use of test equipment.
for the performance of maintenance functions on
C--Service. To clean, to preserve, to charge, and to add fuel, lubri-
the identified end item or component. The imple-
cants, cooling agents, and air.
D--Adjust. To rectify to the extent necessary to bring into proper
mentation of the maintenance functions upon the
operating range.
identified end item or component will be consistent
E--Align. To adjust specified variable elements of an item to
with the assigned maintenance functions.
bring to optimum performance.
F--Calibrate. To determine the corrections to be made in the
c. Section III, lists the special tools and test
readings of instruments or test equipment used in precise
equipment required for each maintenance function
measurement. Consists of the comparison of two instruments,
as referenced from Section II (Not applicable).
one of which is a certified standard of known accuracy, to de-
tect and adjust any discrepancy in the accuracy of the instru-
d. Section IV, contains supplemental in-
ment being compared with the certified standard.
structions or explanatory notes required for a par-
G--Install. To set up for use in an operational environment such
ticular maintenance function.
as an emplacement, site, or vehicle.
H--Replace. To replace unserviceable items with serviceable like
items.
D-2.
Explanation of Columns in Sec-
I--Repair. Those maintenance operations necessary to restore an
item to serviceable condition through correction of material
tion II
damage or a specific failure. Repair may be accomplished at
a. Group Number, Column (1). The assembly
each level of maintenance.
J--Overhaul. Normally, the highest degree of maintenance per-
group number is a numerical group assigned to each
formed by the Army in order to minimize time work is in pro-
assembly. The assembly groups are listed on the
cess consistent with quality and economy of operation. It con-
MAC in disassembly sequence beginning with the
sists of that maintenance necessary to restore an item to
completely serviceable condition as prescribed by mainte-
first assembly removed in a top down disassembly
nance standards in technical publications for each item of
sequence.
equipment. Overhaul normally does not return an item to like
new, zero mileage, or zero hour condition.
b. Assembly Group, Column (2). This column
K--Rebuild. The highest degree of material maintenance. It con-
contains a brief description of the components of
sists of restoring equipment as nearly as possible to new con-
each assembly group.
dition in accordance with original manufacturing standards.
Rebuild is performed only when required by operational con-
c. Maintenance Functions, Column (3). This
siderations or other paramount factors and then only at the
column lists the various maintenance functions (A
depot maintenance level. Rebuild reduces to zero the hours or
through K). The upper case letter placed in the ap-
miles the equipment, or component thereof, has been in use.
propriate column indicates the lowest maintenance
The maintenance functions are defined as fol-
level authorized to perform these functions. The ac-
lows :
tive repair time required to perform the mainte-
d Tools and Equipment, Column (4). This
nance function is included directly below the sym-
column not applicable.
bol identifying the category of maintenance. The
e. Remarks, Column (5). This column is pro-
symbol designations for the various maintenance
vided for referencing by code the remarks (Section
levels are as follows:
IV) pertinent to the maintenance functions.
C - Operator or crew
D-3.
Explanation of Columns in Sec-
O - Organizational maintenance
tion III
F - Direct support maintenance
H - General support maintenance
(Not applicable).
D - Depot maintenance
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