Artillery Mechanic, Antiaircraft (Automatic Weapons) Minor Maintenance (833) Enlisted Personnel

Performs various duties connected with minor maintenance of gun and carriage of a 37- or 40-mm antiaircraft gun and auxiliary equipment.
Periodically disassembles major parts of gun including recoil assembly, breech block mechanism, barrel assembly, and automatic loader, inspecting and cleaning working parts. Replaces such defective or worn parts as set screws, bolts, cotter keys, flash hiders, tube collar sleeves, and automatic feed plungers. On carriage, adjusts such vital parts as equilabrators, axle balancing mechanism, and electric brakes. Cleans and lubricates or packs bearing surfaces and revolving parts, including hubs, wheel bearing, jack handles, ball bearings, trunnion bearings, and elevating and traversing gears.
Performs other authorized first and second echelon repair or maintenance work. Adds recoil fluid and gas as needed. Instructs operating crews in care and maintenance of guns.
Uses a wide variety of tools, including monkey wrenches, screw drivers, pliers, socket wrenches, end wrenches, punches, mechanic's and bronze hammers, chisels, and automatic loader tools.