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MAINTENANCE FUNCTIONS - TM-9-2350-238-20-20398
Up
TM-9-2350-238-20-2 Crane (CAB) Components Recovery Vehicle Full-Tracked: Light Armored M578 (
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Section II. MAINTENANCE ALLOCATION CHART (MAC) FOR M578 RECOVERY VEHICLE
TM
9-2350-238-20-2
c. C o l u m n
3,
Maintenance
Function. Column 3 lists the functions to be performed on the
item listed in column 2. (For detailed explanation of these functions, see paragraph B-2. )
d. C o l u m n  4 ,  M a i n t e n a n c e  L e v e l . Column 4 specifies, by the listing of a work time figure in
the appropriate subcolumn(s), the level of maintenance authorized to perform the function listed
in  column  3.  This  figure  represents  the  active  time  required  to  perform  the  maintenance  func-
tions  at  the  indicated  level  of  maintenance.  If  the  number  or  complexity  of  the  tasks  within  the
listed maintenance function vary at different maintenance levels, appropriate work time figures
will be shown for each level. The work time figure represents the average time required to
restore  an  item  (assembly,  subassembly,  component,  module,  end  item,  or  system)  to  a  ser-
viceable  condition  under  typical  field  operating  conditions.  This  time  includes  preparation  time
(including any necessary disassembly/assembly time), troubleshooting/fault location time, and
quality  assurance/quality  control  time  in  addition  to  the  time  required  to  perform  the  specific
tasks  identified  for  the  maintenance  functions  authorized  in  the  maintenance
allocation
chart.
The  symbol  designations  for  the  various  maintenance  levels  are  as  follows:
C.............................
Operator  or  Crew
O.............................
Unit Maintenance
F.............................
Direct  Support  Maintenance
H.............................
GeneraI  Support  Maintenance
S p e c i a l i z e d R e p a i r A c t i v i t y ( S R A )6
L .............................
D.............................
Depot  Maintenance
e. C o l u m n
5,
Tools
and
Equipment. Column
5
specifies,
by
code,
those
common
tool
sets
(not  individual  tools)
and
special
tools,
TMDE,
and
support
equipment
required
to
perform
the
designated  function.
f. C o l u m n
6,
R e m a r k s . This
column
shall,
when
applicable,
contain
a
letter
code,
in
alphabetic order, which shall be keyed to the remarks contained in Section IV.
B-4.
EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS,
SECTION
III.
a. C o l u m n  1 ,  R e f e r e n c e  C o d e . T h e t o o l a n d t e s t e q u i p m e n t r e f e r e n c e c o d e c o r r e l a t e s w i t h a
code used in the MAC, Section II, column 5.
b. Column  2,  Maintenance
Level. The lowest level of maintenance authorized to use the tool
or test equipment.
c. C o l u m n
3,
Nomenclature. Name or identification of the tool or test equipment.
d. C o l u m n 4 , N a t i o n a l S t o c k N u m b e r . The
National
stock
number
of
the
tool
or
test
equipment.
e. C o l u m n
5,
Tool
Number. The
manufacturer's
part
number.
6
This
maintenance
level
is
not
included
in
Section
ll,
column
4
of
the
Maintenance
Allocation
Chart.  To  identify  functions  to  this  level  of  maintenance,  enter  a  work  time  figure  in  the  "H"
column of Section II, column 4, and use an associated reference code in the Remarks column 6.
Key the code to Section IV, Remarks, and explain the SRA complete repair application there. The
explanatory remark(s) shall reference the specific Repair Parts and Special Tools List (RPSTL) TM
which
contains
additional
SRA
criteria
and
the
authorized
spare/repair
parts.
B-3

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