TM-9-2815-225-34-P
ENGINE, DIESEL: 6 CYLINDER IN-LINE TURBOCHARGED, CUMMINS MODEL NTC-400
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2005
TM-9-2815-225-34-P - Page 59 of 736
TM 9-2815-225-34&P
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PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) INSTRUCTIONS (Contd)
MAINTENANCE ALLOCATION CHART
The Maintenance Allocation Charts (MACs), tables 2 and 3, designate 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 will be consistent with the
capacities and capabilities of the designated maintenance categories.
EXPLANATION OF MAINTENANCE ALLOCATION CHART
Column 1, Group Number—
Column 1 lists code numbers, which identify maintenance significant
components, assemblies, subassemblies, and modules with the higher assembly.
Column 2, Component/Assembly—
Column 2 contains the names of components, assemblies,
subassemblies, and modules for which maintenance is authorized.
Column 3, Maintenance Function—
Column 3 lists the functions to be performed on the item listed
in Column 2.
Column 4, Maintenance Category—
Column 4 specifies the category of maintenance authorized to
perform each maintenance function at the indicated category of maintenance. If the number or
complexity of the tasks within the listed maintenance function varies at different maintenance
categories, appropriate “work time” figures will be shown for each category. The “work time” figure
represents the average time required to restore an item (assembly, subassembly, component, module,
end item, or system) to a serviceable condition under typical field operating conditions. This time
includes preparation time (including any necessary disassembly/assembly time), troubleshooting/fault
location time, and quality assurance/quality control time in addition to the time required to perform
each specific task. The symbol designations for the various maintenance categories are as follows:
F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Direct Support Maintenance
H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Support Maintenance
Column 5, Tools and Equipment—
Column 5 specifies, by code, those common tool sets (not
individual tools) and special tools, TMDE, and support equipment required to perform the designated
function.
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