91 Maintenance

MOS 91, also known as Mechanical and Equipment Maintenance, refers to a Military Occupational Specialty (MOS) code used by the United States military to categorize and organize the various job roles and responsibilities within the armed forces. MOS 91 typically encompasses a range of roles related to the maintenance and repair of mechanical equipment and machinery, which can vary depending on the specific branch of the military (e.g., Army, Navy, Air Force, Marine Corps).

The individuals assigned to MOS 91 roles are responsible for ensuring that military equipment, vehicles, and machinery are in optimal working condition. They perform routine maintenance, inspections, troubleshooting, and repairs to keep essential equipment operational. This includes tasks such as:

  1. Preventive Maintenance: Conducting regular inspections and servicing of equipment to identify and address potential issues before they become serious problems.

  2. Troubleshooting: Diagnosing and identifying the root causes of equipment malfunctions and failures.

  3. Repairs: Conducting necessary repairs to restore equipment to operational status, including replacing faulty parts, performing welding or fabrication work, and conducting electrical or mechanical repairs.

  4. Records and Documentation: Maintaining detailed records of maintenance and repair activities, including equipment histories, maintenance schedules, and service logs.

  5. Equipment Testing: Performing tests and inspections to verify that equipment meets safety and operational standards.

  6. Safety: Adhering to safety protocols and guidelines to ensure the well-being of themselves and their fellow service members.

MOS 91 personnel may work on a wide range of equipment, including armored vehicles, aircraft, heavy machinery, generators, weapons systems, and more, depending on their specific job assignment and branch of service.

It’s important to note that the specific duties and responsibilities of individuals in MOS 91 roles can vary widely based on factors such as their military branch, rank, and the specific equipment they are responsible for maintaining. Additionally, the designation and responsibilities of military MOS codes can change over time as technology and military needs evolve.

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