TM 5-3895-385-23-3
FIELD MAINTENANCE
BITUMINOUS MATERIAL PAVING MACHINE (BMPM)
MAINTENANCE ALLOCATION CHART (MAC) INTRODUCTION
INTRODUCTION
The Army Maintenance System MAC
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.
This Maintenance Allocation Chart (MAC) 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 on the MAC in column (4) as:
Field includes two subcolumns, Crew (C) and Maintainer (F).
Sustainment includes two subcolumns, Below Depot (H) and Depot (D).
The maintenance to be performed at field and sustainment levels is described as follows:
1. Crew maintenance. The responsibility of a using organization to perform maintenance on its assigned
equipment. It normally consists of inspecting, servicing, lubricating, adjusting, and replacing parts,
minor assemblies, and subassemblies. The replace function for this level of maintenance is indicated by
the letter "C" in the third position of the Source, Maintenance, and Recoverability (SMR) code. A "C"
appearing in the fourth position of the SMR code indicates complete repair is possible at the crew
maintenance level.
2. Maintainer maintenance. Maintenance accomplished on a component, accessory, assembly,
subassembly, plug-in unit, or other portion either on the system or after it is removed. The replace
function for this level of maintenance is indicated by the letter "F" appearing in the third position of the
SMR code. An "F" appearing in the fourth position of the SMR code indicates complete repair is
possible at the field maintenance level. Items are returned to the user after maintenance is performed at
this level.
3. Below depot sustainment. Maintenance accomplished on a component, accessory, assembly,
subassembly, plug-in unit, or other portion either on the system or after it is removed. The replace
function for this level of maintenance is indicated by the letter "H" appearing in the third position of the
SMR code. An "H" appearing in the fourth position of the SMR code indicates complete repair is
possible at the below depot sustainment maintenance level. Items are returned to the supply system
after maintenance is performed at this level.
4. Depot sustainment. Maintenance accomplished on a component, accessory, assembly, subassembly,
plug-in unit, or other portion either on the system or after it is removed. The replace function for this
level of maintenance is indicated by the letter "D" or "K" appearing in the third position of the SMR code.
Depot sustainment maintenance can be performed by either depot personnel or contractor personnel. A
"D" or "K" appearing in the fourth position of the SMR code indicates complete repair is possible at the
depot sustainment maintenance level. Items are returned to the supply systems after maintenance is
performed at this level.
The tools and test equipment requirements table (immediately following the MAC) lists the tools and test
equipment (both special tools and common tool sets) required for each maintenance function as referenced from
the MAC.
