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HULL ASSEMBLY REPAIR INSTRUCTIONS
REPAIR (cont) - TM-5-1940-277-34_434

TM-5-1940-277-34 Boat Bridge Erection Twin Jet Aluminum Hull Model USCSBMK1 (1940-01-105-5728) Manual
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TM 5-1940-277-34 HULL ASSEMBLY REPAIR INSTRUCTIONS (Continued) LOCATION ITEM ACTION REMARKS 5. Continued applications of heat may be required. 6. Cool area with a light water spray. 7. Cold-hammer remaining minor dents or buckled areas. c. Deep, Small Area Dent 1. Occasionally, a deep small-area dent will not respond to above methods of repair.  Drill a small hole in the center of the dent.  This provides room for metal displacement during hammering. 2. Repair with one of above methods as required. 3. Close hole by welding. 2. Cracks a. Reshape metal using one of methods in 1. above. b. Drill a hole at each end of the crack. c. Hold aluminum back-up plate against opposite face. 2-425







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