2-1. Maintenance Concept. The Rotary Tiller will not require any new or special maintenance considerations. All
maintenance functions can be accomplished within the current maintenance concepts established for construction
a. Operator/Crew Maintenance: Operator and crew maintenance is limited to daily preventive maintenance checks
b. Organizational Maintenance: Organizational maintenance consists of scheduled preventive maintenance
services, minor repairs and adjustments.
c. Direct Support Maintenance: Direct support maintenance consists of repairs on-site or in a direct support unit's
shops. Repairs are accomplished with a minimum of tools and test equipment. Upon completion of repairs to an end
item or component, they are returned to the user.
d. General Support Maintenance: General support maintenance overhauls selected assemblies and repairs items
designated by the area support Command for return to stock.
e. Depot Maintenance: Depot maintenance overhauls end items and selected major assemblies when they are
required to satisfy overall Army requirements. Overhaul of the end item may also be performed by contract with the
2-2. Maintenance Allocation Chart. Maintenance will be performed as necessary by the category indicated in the
Maintenance Allocation Chart (MAC) (Appendix C) to retain or restore serviceability. All authorized maintenance within
the capability of a using organization will be accomplished before referring the item to support maintenance. Higher
categories will perform the maintenance functions of lower categories when required or directed by the appropriate
Commanders. Using and support units may exceed their authorized scope and functions in the MAC when approval is
granted by the next higher support maintenance Commander.
2-3. Modifications. Modifications will be accomplished by the end item manufacturer after TACOM's approval of the
field campaign or modification plan. See Appendix D.
2-4. Equipment Improvement Recommendations (EIR). Equipment Improvement Recommendations will be submitted
in accordance with TM 38-750.
2-5. Equipment Readiness Reporting. Readiness Reporting will be accomplished in accordance with TM 38-750.