FIELD: transport.
SUBSTANCE: proposed method consists in removing foreign items and rust from sleeper expansion bolt cavity. Then end milling cutter is used to level down damaged wood screw surface. Then stippling of aforesaid leveled surface is performed. Then preset hole formed on wood screw leveled surface is counterbored. Now, damaged wood screw is removed from expansion bolt by extractor and replaced by new one.
EFFECT: ease of repair.
3 cl, 4 dwg
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