Appendix B. MAINTENANCE ALLOCATION CHART

TM 9-6685-202-14

APPENDIX B

MAINTENANCE ALLOCATION CHART

Service:

To clean, preserve, and replenish

B-1. General

lubricants.

This appendix contains the Maintenance Allocation

Chart (MAC) which lists the lowest echelon authorized to

Adjust:

To regulate periodically to prevent

perform each maintenance operation, the tools required,

malfunction.

and remarks regarding the maintenance of the item.

Inspect: To verify serviceability and to detect

B-2. Explanation of Columns

incipient electrical or mechanical failure by scrutiny.

a. Column 1, Reference Numbers. Column 1 lists

Test:

To verify serviceability and detect

reference numbers, the purpose of which is to identify

incipient electrical or mechanical failure by use of

groups, components, assemblies, and subassemblies

special equipment such as gages, meters, etc.

with the next higher assembly. Reference numbers are

assigned in sequence to group, components, or

Replace: To substitute serviceable assemblies,

assemblies listed in Column 2. These begin with

subassemblies and parts of unserviceable component

reference number 1 for the first group, component or

parts.

assembly; 2 for second and so on. Parts of assembly

are numbered in sequence using a decimal following the

Repair: To restore an item to serviceable

number of the assembly. For example, the third

condition through correction of a specific condition. This

maintainable part of an assembly numbered 8 would be

function includes, but is not limited to, inspecting,

numbered 8.3.

cleaning, preserving, adjusting, replacing, welding,

b. Column 2, Component and Related Operations.

riveting, and straightening.

Column 2 lists the end item on which maintenance can

be performed, and lists the maintenance operations

Overhaul: To restore an item to a completely

which are authorized to be performed on it.

serviceable condition as prescribed by maintenance

c. Columns 3, 4, 5, and 6. Indicate by "X" the

serviceability standards.

lowest maintenance level authorized to perform the

prescribed maintenance operation.

NOTE

d. Column 7, Tools Required. Lists special tools or

Symbol "X" The Symbol "X" placed

tool sets and test equipment required to perform the

in the appropriate column indicates

prescribed maintenance operation.

the

echelon

responsible

for

e. Column 8.

Remarks.

Used as a cross

performing

that

particular

reference for a particular maintenance function or any

maintenance operation, but does not

special explanatory notes.

necessarily indicate that repair parts

will be stocked at that level.

B-3. Use of Chart

Echelons higher than the echelon

Determine from the chart the echelon that is authorized

marked "X" are authorized to perform

to perform the required operation.

Maintenance

the indicated operations.

operations are defined below:

B-1