TM-9-2350-277-20-4 Unit Maintenance Manual Volume 4 M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-20-4 REPAIR HULL BY WELDING — Continued 0529 00 MAGNESIUM CASTINGS WARNING Magnesium may catch on fire if welded on or exposed to high temperatures. Do not weld on magnesium castings or expose them to high temperatures. 1. Welding on fan magnesium castings is not authorized. Do not attempt to weld on these parts. WARNING Fine particles of magnesium can catch fire and burn you. Be very careful when filing or grinding on magnesium. Use grinding equipment marked FOR MAGNESIUM GRINDING ONLY. Keepa Class D fire extinguisher nearby. 2. You must observe the following safety precautions when filing or grinding on magnesium: a. Use grinding equipment marked FOR MAGNESIUM GRINDING ONLY. b. Use a suitable coolant when grinding magnesium to keep temperatures below ignition point. c. Keep tools used on magnesium sharp. WARNING Water and foam-type fire extinguishers will cause magnesium fires to flare up. Use a Class D fire extinguisher or a sodium chloride base dry powder to fight magnesium fires. d. Keep a Class D fire extinguisher nearby for use on magnesium fires. e. Wear outer clothing of fire retardant cloth or leather. Brush clothing often to remove magnesium particles. f. Clean work area often. Do not let magnesium particles build up. 0529 00-2 Change 3