TM-9-2350-261-20-3 Unit Maintenance Manual Volume 3 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-20-3 REPAIR HULL BY WELDING — Continued 0575 00 ALUMINUM CASTINGS C A U T I O N Heat distortion during welding will damage aluminum castings. Do not attempt to repair aluminum castings by welding. 1. Welding on final drive aluminum casting is not authorized. Do not attempt to weld on the final drive housing assembly. 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. Keep a 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. 0575 00-2