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Figure 71.38-Continued
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TM-5-4210-205-12 Truck Fire Fighting; Powered Pumper; Foam and Water 500 G.M.P.; Centrifugal Pump Power Take Off Driven; 400 Gal. Water Tank 40 Gal. Manual
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Explanation of Columns In Section II
Pages 103, appendix II is superseded as follows:
APPENDIX II
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
condition, i.e., to clean, preserve, drain, paint, and
1. General
replenish fuel, lubricants, hydraulic, and deicing
a. Section I provides a general explanation of all
fluids, or compressed air supplies.
maintenance and repair functions authorized at various
B-- ADJUST:  Regulate  periodically  to  prevent
maintenance levels.
malfunction.
Adjustments  will  be  made
b. Section II designates overall responsibility for the
commensurate with adjustment procedures and
performance  of  maintenance  operations  on  the
associated equipment specifications.
identified end item or component. The implementation
C-- ALINE: Adjust two or more components of an
of the maintenance tasks upon the end item or
electrical or mechanical system so that their
component  will  be  consistent  with  the  assigned
functions are properly synchronized or adjusted.
maintenance operations.
D-- CALIBRATE: Determine, check, or rectify the
graduation of an instrument, weapon, or weapons
2. Explanation of Columns In Section II
system or components of a weapons system.
a. Functional Group Number. The functional group
E-- INSPECT: Verify serviceability and detect incipient
is a numerical group set up on a functional basis. The
electrical or mechanical failure by close visual
applicable functional grouping indexes (obtained from
examination.
TB 750-93-1, Functional Grouping Codes) are listed on
F-- TEST: Verify serviceability and detect incipient
the MAC in the appropriate numerical sequence. These
electrical or mechanical failure by measuring the
indexes are normally set up in accordance with their
mechanical or electrical characteristics of the item
function and proximity to each other.
and comparing those characteristics with authorized
b.
Component Assembly Nomenclature.
This
standards. Tests will be made commensurate with
column contains a brief description of the components
test procedures and with calibrated tools and/or test
of each functional group.
equipment referenced in the MAC.
c.
Maintenance Operations and Maintenance
G-- REPLACE:  Substitute  serviceable  components,
Levels.  This column list the various maintenance
assemblies and subassemblies for unserviceable
operations (A through J) and indicates the lowest
counterparts or remove and install the same item
maintenance  level  authorized  to  perform  these
when required for the performance of other
operations.
maintenance operations.
H-- REPAIR : Restore to a serviceable condition by
The  symbol  designations  for  the  various
replacing unserviceable parts or by any other action
maintenance levels are as follows:
required using available tools, equipment and skills-
-to include welding, grinding, riveting, straightening,
C--Operator or crew
adjusting and facing.
O--Organizational maintenance
F--Direct support maintenance
H--General support maintenance
D--Depot maintenance
The Maintenance Operations are defined as follows:
A -SERVICE: Operations required periodically to keep
the item in proper operating
AGO 5667A
44

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