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REFERENCES - TM-5-6350-262-14-20040
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TM-5-6350-262-14-2 Processor Passive Signal Ultrasonic MX-9443( )/FSS-9(V) FSN 6350-228-2548 Receiver Passive Signal Ultrasonic Manual
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Section II. MAINTENANCE ALLOCATION CHART - TM-5-6350-262-14-20042
APPENDIX B
MAINTENANCE ALLOCATION CHART
Section 1. INTRODUCTION
pient failure by measuring the mechnical or electri-
B-1. General
cal characteristics of an item and comparing those
a.  This section provides a general explanation of
characteristics with prescribed standards.
all maintenance and repair functions authorized at
C - Service: Operations required periodically to
various maintenance levels.
keep an item in proper operating condition, i.e., to
b.  Section II designates overall responsibility for
clean, to preserve, to drain, to paint, or to replenish
the performance of maintenance functions on the
fuel, lubricants, hydraulic fluids, or compressed air
identified end item or component and the work
supplies.
measurement time required to perform the func-
D - Adjust: To maintain within prescribed limits,
tions by the designated maintenance level. The
by bringing into proper or exact position, or by
implementation of the maintenance functions upon
setting the operating characteristics to specified
the end item or component will be consistent with the
parameters.
assigned maintenance functions.
E - Aline: TO adjust specified variable elements of
c. Section III lists the special tools and test
an item to bring about optimum or desired perfor-
equipment required for each maintenance function
mance.
as referenced from Section II. (Not Applicable).
F - Calibrate: To determine and cause correc-
d.  Section IV contains supplemental instructions
tions to be made or to be adjusted or instruments or
or explanatory notes for a particular maintenance
test measuring and diagnostic equipments used in
function. (Not Applicable).
precision measurement. Consists of comparisons of
B-2. Explanation of Columns in Section II
two instruments, one of which is a certified standard
of known accuracy, to detect and adjust any
a. Column (1), Group Number. A number is
discrepancy in the accuracy of the instrument being
assigned to each group in a top down breakdown
compared.
sequence. The applicable groups are listed on the
G - Install: The act of emplacing, seating, or
MAC in disassembly sequence beginning with the
fixing into position an item, part, or module
first group removed.
(component or assembly) in a manner to allow the
b. Column (2), Functional Group. This column
proper functioning of an equipment or system.
contains a brief description of the components of
H - Replace: The act of substituting a serviceable
each numerical group.
like type part, subassembly, or module (component or
c. Column (3), Maintenance Functions. T h i s
column lists the various maintenance functions (A
assembly) for an unserviceable counterpart.
through K). The lowest maintenance level au-
I. - Repair: The application of maintenance ser-
thorized to perform these functions is indicated by a
vices (inspect, test, service, adjust, align, calibrate, or
replace) or other maintenance actions (welding,
symbol in the appropriate column. Work measure-
grinding, reveting, straightening, facing, remachin-
ment time standards (the active repair time required
ing or resurfacing) to restore serviceability to an
to perform the maintenance function) are shown
item by correcting specific damage, fault, malfunc-
directly below the symbol identifying the mainte-
tion, or failure in a part, subassembly, module
nance level. The symbol designations for the various
(component or assembly), end item, or system.
maintenance levels are as follows:
C - Operator or crew.
J - Overhaul:
The
maintenance
effort
O - Organization maintenance.
(service/action) necessary to restore an item to a
F - Direct support maintenance.
completely serviceable/operational condition as pre-
H - General support maintenance.
scribed by maintenance standards (i.e., DMWR) in
D - Depot maintenance.
appropriate technical publication. Overhaul is nor-
The maintenance functions are defined as
mally the highest degree of maintenance performed
follows:
by the Army. Overhaul does not normally return an
A - Inspect: To determine serviceability of an item
item to like new condition.
by comparing its physical, mechanical, and electrical
K - Rebuild: Consists of those services/actions
characteristics with established standards through
necessary for the restoration of unserviceable
examination.
B - Test: To verify serviceability and detect inci-
equipment to a like new condition in accordance with
B-1

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