Appendix B. Maintenance Allocation

TM 55-4240-284-12&P

APPENDIX

MAINTENANCE

ALLOCATION

Section

INTRODUCTION

B-1. General.

This appendix contains explanations of all maintenance and repair functions authorized at the various

levels of maintenance. Section II is the maintenance allocation chart. The maintenance allocation chart

assigns authorized maintenance functions to the lowest maintenance level based on skills available, time

required, and tools and test equipment authorized.

B-2. Maintenance.

Maintenance is any action taken to keep material in a serviceable condition or to restore it to ser-

viceability when it is unserviceable.

B-3. Maintenance Levels.

The five levels of maintenance authorized for Army material and the symbols used to indicate each lev-

el are as follows:

Operator or Crew

Organizational

Direct Support

General Support

Depot

B-4.

Symbols.

A maintenance level symbol placed in the appropriate maintenance function column indicates the low-

est level authorized to perform that particular maintenance functions.

B-5. Explanation of Columns.

a. Group number. Column 1 lists group numbers to identify components, assemblies, and sub-

assemblies, with the next higher assembly,

b. functional group. Column 2 lists the noun names of components, assemblies and subassemblies

on which maintenance is authorized.

c. Maintenance function. Column 3 is divided into subcolumns to indicate the maintenance func-

tions authorized for the components, assemblies, and subassemblies. Each maintenance function which

is indicated for the rescue seat assembly is applicable to all items of the assembly. The term "replace"

applies only to the assembly or item beside which it appears. Definition of the maintenance functions au-

thorized are as follows:

(1) Inspect. To determine serviceability of an item by comparing its physical and mechanical

characteristics with established standards.

(2) Service. To clean; to dry; to preserve components, assemblies, and subassemblies.

(3) Install. To set up for use in an operational environment.

(4) Replace. To replace unserviceable items with like serviceable items.

(5) Repair. To restore an item to serviceable condition through correction of a specific failure or

unserviceable condition. This includes, but is not limited to, replacing components and lubricating.

d. ToolS and equipment. Column 4 is used to specify those tools and test equipment required to per

form the designated maintenance function.

Remarks. Column 5 lists specific maintenance functions.

B-1