TM 3-240-212-14&P
APPENDIX C
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
categories for the M20 breathing apparatus This chart is
C-1.
General
to be used by all levels of maintenance to Insure
The maintenance allocation chart lists the authorized
complete support of the equipment
maintenance functions for the four maintenance
Section II. EXPLANATION OF COLUMNS
modules with the next higher assembly.
C-2.
Maintenance Functions
b. Column 2-- Component/Assembly Column 2
Maintenance functions authorized are limited to and
contains the noun names of components, assemblies,
defined as follows
subassemblies, and modules for which maintenance Is
a. Inspect. To determine the serviceability of an
authorized
item by comparing its physical, mechanical and/or
c. Column 3-- Maintenance Functions Column 3 lists
electrical characteristics with established standards
the functions to be performed on the item listed in column
through examination.
2
b. Test. To verify serviceability and detect incipient
d. Column 4-- Maintenance Category Column 4
failure by measuring the mechanical or electrical
specifies, by the listing of a "work time" figure In the
characteristics of an item and comparing those
appropriate subcolumn/s), the lowest level of
characteristics with prescribed standards.
maintenance authorized to perform the function listed in
c. Service. Operations required periodically to keep
column 3 This figure represents the active time required
an item In proper operating condition, i.e., to clean
to perform that maintenance function at the indicated
(decontaminate), to preserve, to drain, to paint, or to
category of maintenance If the number or complexity of
replenish fuel, lubricants, hydraulic fluids, or compressed
the tasks within the listed maintenance function vary at
air supplies.
different maintenance categories, appropriate "work timer'
d. Replace. The act of substituting a serviceable
figures will be shown for each category The number of
like type part, subassembly, or module /component or
man-hours specified by the "work tine" figure represents
assembly) for an unserviceable counterpart
the average time required to restore an Item (assembly,
e. Repair The application of maintenance services
subassembly, component, module, end item or system) to
or other maintenance actions to restore serviceability to
a serviceable condition under typical field operating
an item by correcting specific damage, fault, malfunction,
conditions This time includes preparation time,
or failure in a part, subassembly, module (component or
troubleshooting time, and quality assurance/quality control
assembly), end item, or system
time in addition to the time required to perform the
specific tasks identified for the maintenance functions
C-3. Explanation of Columns
authorized in the maintenance allocation chart
a. Column 1-- Group Number. Column 1 lists group
numbers, the purpose of which is to identify components,
assemblies, subassemblies, and
MAINTENANCE ALLOCATION CHART
for
M20 OXYGEN GENERATING BREATHING APPARATUS
(1)
(2)
(3)
(4)
(5)
MAINTENANCE CATEGORY*
COMPONENT
GROUP
MAINTENANCE
TOOLS
ASSEMBLY
NUMBER
FUNCTION
AND
C
O
F
H
D
EQUIP
0100
FACEPIECE
Inspect
0.1
Test
0.5
C-1
