Artillery Mechanic, Light Antiaircraft (978) Enlisted Personnel

Inspects, tests, and performs major repairs, unit replacements of complete rebuilding of antiaircraft artillery of 40-mm or smaller caliber in a mobile or fixed artillery repair shop.
Determines causes of malfunctioning of equipment by visual inspection and by use of such testing devices as vernier calipers, pressure gauges, and spirit levels.
Using such hand and bench tools and equipment as hammers, screw drivers, various size socket and straight wrenches, hand power drill, block-and-tackle, and hoists, repairs and replaces defective assemblies of breechblock and firing mechanism, recoil and counterrecoil systems, shock absorbing devices, and traversing and elevating mechanisms.