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With 70 tons of steel composite armor and a more-than-fifteen hundred horsepower turbine power train controlled by computerized operating systems the M1 Abrams is the most technologically advanced and lethal main battle tank in the world. Maintaining the M1 tank is the responsibility of the Abrams Tank System Maintainer.

In this career field your duties may include diagnosing and troubleshooting tank system malfunctions along with performing maintenance on the suspension, steering, hydraulic, and auxiliary power systems and maintaining the turret, gun, and fire control systems. Ultimately, you will be responsible for keeping the M1 Abrams tank operational and battle ready. To excel in this career field you should: be physically fit in order to lift heavy tools, components and parts, possess strong problem solving, analytical, and critical thinking skills, have an interest in working with electrical equipment, with high attention to detail and an interest in working with diesel and turbine engines.

After successfully completing Army Basic Combat Training, you will attend approximately 16 weeks of Advanced Individual Training at Fort Benning, Georgia. There, you will spend time in both shop and field environments learning electronic and mechanical principles and concepts, troubleshooting mechanical and electrical problems, learning to read and use wiring diagrams and technical manuals and the operation, testing and maintenance of lethal weapons systems.

After successful completion of training, you may be eligible for worldwide assignments as a member of a Brigade Combat Team. You may have the opportunity to advance in your career through additional technical, tactical, and leadership training. The skills you learn such as teamwork, discipline, and leadership, may help you transition from the military to the civilian work force where you may find employment as an electronics technician or a heavy equipment mechanic with companies that design, build, and test weapons for the military.

The Abrams Tank System Maintainer: a crucial member of the Armor team… GO ORDINANCE!

M1 ABRAMS Tank System Maintainer (91A)

  • Enlisted
  • Officer
  • Active Duty
  • Army Reserve
  • National Guard
  • Entry Level


The M-1 Abrams tank system maintainer is primarily responsible for supervising and performing maintenance on Abrams tanks.

Job Duties

  • Perform maintenance on the suspension, steering, hydraulic, auxiliary power, fire extinguisher/suppression and gas particulate systems
  • Diagnose and troubleshoot malfunctions


Those who want to serve must first take the Armed Services Vocational Aptitude Battery, a series of tests that helps you better understand your strengths and identify which Army jobs are best for you.


Job training for an M-1 Abrams tank systems maintainer requires 10 weeks of Basic Combat Training and 24 weeks of Advanced Individual Training with on-the-job instructions. Part of this time is spent in the classroom and part in the field.

Some of the skills you’ll learn are:

  • Electronic and mechanical principles and concepts
  • Use of electronic, electrical and mechanical test equipment
  • Use of schematics, drawings and wiring diagrams
  • Operation, testing and maintenance of weapons systems

Helpful Skills

  • Strong in science and math
  • Interest in working with electronic or electrical equipment
  • High attention to detail
  • Interest in working with diesel and turbine engines

Required ASVAB Score(s)

Mechanical Maintenance (MM): 99
Mechanical Maintenance (MM): 88, General Technical (GT): 92

Learn more about the ASVAB and see what jobs you could qualify for.


Total compensation includes housing, medical, food, special pay, and vacation time. Learn more about total compensation.

Earn Cash For In Demand Jobs

You could earn up to $40,000 in cash bonuses just for enlisting under certain Military Occupational Specialties. Visit Jobs in Demand to see if this job qualifies for an enlistment bonus.

Education Benefits

In the Army, qualified students can earn full-tuition, merit-based scholarships, allowances for books and fees, plus an annual stipend for living expenses. Learn more about education benefits.

Future Civilian Careers

The skills you learn will help prepare you for a career as an electronic mechanic, an avionics technician or a missile facilities repairer with companies that design, build and test weapons for the military.


Those interested in this job may be eligible for civilian employment, after the Army, by enrolling in the Army PaYS program. The PaYS program is a recruitment option that guarantees a job interview with military friendly employers that are looking for experienced and trained Veterans to join their organization. Find out more about the Army PaYS Program at


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