General Mechanics Tool Kit (Item 1, App B)
Welding Shop, Trailer Mounter (Item 3, App B)
Refrigeration unit shutdown (TM 9-4110-258-13)
The surfaces of parts to be welded shall be free from rust, scale, paint, grease, and other foreign matter. Weld
penetration shall be such as to provide transference of maximum design stress through the base metal juncture. Fillet
welds shall be provided when necessary to reduce stress concentration. Welding procedures shall be qualified in
accordance with American Society of Mechanical Engineers (ASME) or American Welding Society (AWS) code, and all
welding and welds shall be in accordance with ASME or AWS code. Integrity of welds can easily be verified by visual
inspection. The inspection should determine that the weld is:
Watertight and free of porosity.
Smooth in appearance (no roughness, weld spatter, etc.).
Free of craters.
Dimensionally accurate (including warpage).
Free of undercutting.
Inspection should also determine that full weld penetration is achieved. If welding one side of the joint does not achieve
full weld penetration, both sides of the joint must be welded.