Below are the Army MOSs that fall into the Mechanical Maintenance Field:
91A - M-1 Abrams Tank System Maintainer
91B - Wheeled Vehicle Mechanic
91C - Utilities Equipment Repairer
91D - Power Generation Equipment Repairer
91E - Machinist
91F - Small Arms/Artillery Repairer
91G - Fire Control Repairer
91H - Track Vehicle Repairer
91J - Quartermaster and Chemical Equipment Repairer
91K - Armament Repairer
91L - Construction Equipment Repairer
91M - Bradley Fighting Vehicle System Maintainer
91P - Artillery Mechanic
91W - Metal Worker
91X - Maintenance Supervisor
91Z - Mechanical Maintenance Supervisor
