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Appendix A: REFERENCES - TM-55-1730-208-130037
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TM-55-1730-208-13 Jack Hydraulic Part Number 50J25178 (TYPE B6) Manual
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Deviations. - TM-55-1730-208-130039
TM 55-1510-219-10
APPENDIX B
MAINTENANCE ALLOCATION CHART
(9) Repair.
To
restore an
item to
B-1. Purpose.
serviceable condition. This includes, but is not limited
The purpose of the maintenance allocation chart is
to,  inspection,  cleaning,  preserving,  adjusting,
to provide all activities with maintenance functions to be
replacing, welding, riveting, and strengthening.
performed at each level of maintenance.
(10) Overhaul.
To restore an item to a
completely serviceable condition as prescribed by
B-2. Definitions.
maintenance serviceability standards prepared and
published for the specific item to be overhauled.
a. Column 1, Group Number. Column 1 lists group
(11) Rebuild. To restore an item to a standard
numbers,  the  purpose  of  which  is  to  identify
as nearly as possible to original or new condition in
components, assemblies, subassemblies, and modules
appearance, performance, and life expectancy. This is
with the next higher assembly.
accomplished through complete disassembly of the
b. Column 2, Functional Group. Column 2 lists the
item, inspection of all parts or components, repair or
noun
names
of
components,
assemblies,
replacement of worn or unserviceable elements (items)
subassemblies, and modules on which maintenance is
using
original
manufacturing
tolerances
and
authorized.
specifications, and subsequent reassembly of the item.
c. Column
3,
Maintenance
Functions.
(12) Symbols.  The symbol O, F, H, or D
Maintenance functions will be limited to and defined as
placed in the appropriate column indicates the level
follows:
responsible for performing that particular maintenance
(1) Inspect. To determine serviceability of an
function.
The  symbol  "%%"  which  applies  to
item by comparing its physical, mechanical, and
organizational  maintenance  indicates  the  level
electrical characteristics with established standards.
responsible for performing that particular maintenance
(2) Test.
To verify serviceability and to
function may be performed provided it is specifically
detect electrical or mechanical failure by use of test
authorized by the direct support maintenance officer.
equipment.
Use of the symbol will apply only to replacement of
(3) Service. To clean, to preserve, to charge,
major assemblies and time-consuming operations which
and to add fuel, lubricants, cooling agents, and air. If it
are within the capabilities of organization, but over
is desired that elements, such as painting and
which  control  by  the  commodity  commands  is
lubricating, be defined separately, they may be so listed.
considered essential. In no case will the direct support
(4) Adjust. To rectify to the extent necessary
maintenance officer require the accomplishment of a
to bring into proper operating range.
"%%" maintenance function by an organization or unit,
(5) Align.
To adjust specified variable
and in no case will a "%%" function authorize stockage
elements of an item to bring to optimum performance.
of parts at organizational level.
(6) Calibrate. To determine the corrections
d. Column 4, Tools and Equipment. This column
to be made in the readings of instruments or test
will be used to specify, by code, those tools and test
equipment used in precise measurement. Consists of
equipment required to perform the designated function.
the comparison of two instruments, one of which is a
e. Column 5, Remarks. Self-explanatory.
certified standard of known accuracy, to detect and
adjust any discrepancy in the accuracy of the instrument
B-3. General.
being compared with the certified standard.
a. A  maintenance  function  assigned  to  a
(7) Install. To set up for use in an operational
maintenance level, which for any reason is beyond its
environment such as an emplacement, site, or vehicle.
capability, becomes the responsibility of the next higher
(8) Replace. To replace unserviceable items
maintenance level.
with serviceable assemblies, subassemblies, or parts.
b. The authority to perform a maintenance function
does not constitute authority to requisition or otherwise
secure necessary repair parts specified in current supply
directives.
B-1

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