ment. Maintenance is performed on a repair-and-return-to-user basis, and organizational maintenance
repair parts are supplied to using units.
General Support (GS) Maintenance. General support maintenance units receive equipment for repair and
overhaul from direct support units, collection points, supply units, and other activities for which they are
assigned maintenance support responsibilities. GS units operate on a repair/ overhaul and return to
supply system principle.
Depot Maintenance. The primary purpose of Depot maintenance is to augment stocks of serviceable
assets which require maintenance that is beyond the capability of General Support Maintenance Activities.
Depot maintenance is usually accomplished in fixed shops and facilities that are government owned and
operated, government owned and contractor operated, or contractor owned and operated.
MAINTENANCE ALLOCATION CHART (MAC)
Maintenance will be performed as necessary by the category indicated in the Maintenance Allocation Chart 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. The
Maintenance Allocation Chart (MAC) is on page B-9.
Modifications will not be made without the approval of U.S. Army Tank-Automotive Command (TACOM), AMSTA-MVB,
Warren, Ml 48397-5000.
QUALITY DEFICIENCY REPORT (QDR)
Standard Form 368 (Quality Deficiency Report) was adopted for Equipment Improvement Recommendations (EIRs)
reporting. This action was taken to standardize reporting within all governmental services. Submissions to be in
accordance with DA Pam 738-750.
MAINTENANCE EXPENDITURE LIMITS
The average life expectancy for the Tractor-Scraper is 14 years. After last date shown, use 25% repair limit until type
SHIPMENT AND STORAGE
1. Refer to TB 740-97-2, Preservation of USAMECOM Mechanical Equipment for Shipment and Storage.
2. Refer to TM 740-90-1, Administrative Storage of Equipment.
DESTRUCTION TO PREVENT ENEMY USE
Refer to TM 750-244-6, Procedures for Destruction of Tank-Automotive Equipment to Prevent Enemy Use.