TM-9-2330-335-14-P
SEMITRAILER, TACTICAL, BREAKBULK/CONTAINER TRANSPORTER, 22-1/2 TON, RESET M871R, M871A1R AND M871A2R
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE MANUAL (INCLUDES REPAIR PARTS AND SPECIAL TOOLS LIST)
SEPTEMBER 2008
TM-9-2330-335-14-P - Page 487 of 640
TM 9-2330-335-14&P
0081-1
0081
FIELD AND SUSTAINMENT MAINTENANCE
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MAINTENANCE ALLOCATION CHART (MAC) INTRODUCTION
THE ARMY MAINTENANCE SYSTEM MAC
00081
1.
This introduction provides a general explanation of all maintenance and repair functions authorized at the two
maintenance levels under the Two-Level Maintenance System concept.
2.
The MAC immediately following this introduction designates overall authority and responsibility for the performance of
maintenance functions on the identified end item or component. The application of the maintenance functions to the end
item or component shall be consistent with the capacities and capabilities of the designated maintenance levels, which are
shown in the MAC (WP 0082) in column (4) as:
Field - includes subcolumns:
C - Operator/Crew
O - Unit
F - Direct Support
Sustainment - includes subcolumns:
H - General Support
D - Depot
3.
The tools and test equipment requirements (immediately following the MAC) list the tools and test equipment (both
special tools and common tool sets) required for each maintenance function as referenced from the MAC.
4.
The remarks (immediately following the tools and test equipment requirements) contain supplemental instructions and
explanatory notes for a particular maintenance function.
MAINTENANCE FUNCTIONS
00081
Maintenance functions are limited to and defined as follows:
1.
Inspect.
To determine the serviceability of an item by comparing its physical, mechanical, and/or electrical
characteristics with established standards through examination (e.g., by sight, sound, or feel).
2.
Test.
To verify serviceability by measuring the mechanical, pneumatic, hydraulic, or electrical characteristics of an item
and comparing those characteristics with prescribed standards on a scheduled basis, i.e., load testing of lift devices and
hydrostatic testing of pressure hoses.
3.
Service.
Operations required periodically to keep an item in proper operating condition; e.g., to clean (includes
decontaminate, when required), preserve, drain, paint, or replenish fuel, lubricants, chemical fluids, or gases.
4.
Adjust.
To maintain or regulate, within prescribed limits, by bringing into proper position, or by setting the operating
characteristics to specified parameters.
5.
Align.
To adjust specified variable elements of an item to bring about optimum or desired performance.
6.
Calibrate.
To determine and cause corrections to be made or to be adjusted on instruments of test, measuring, and
diagnostic equipment used in precision measurement. Calibration consists of comparisons of two instruments, one of
which is a certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the instrument
being compared.
4
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