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TM 55-1905-221-14-3
6-16
PROPELLER, PROPELLER SHAFT, AND STUFFING BOX (Continued)
LOCATION/ITEM
ACTION
REMARKS
REPAIR (Cont)
c.
bends or depressions in
bronze propellers can be
straightened while the
propeller is cold.
Because cold working
hardens bronze, large
bends or irregularities
must be repaired using
heat to prevent cold
cracks from occurring.
When heat is used, heat
propeller to a dull red
color in a forge or with a
gas flame. For overall
heating where large
surfaces are involved, the
forge is faster and gives
a more uniform application
of heat. Figure below
shows a propeller being
heated with a forge. For
small or localized repairs,
a gas flame should be
used.
6-174


 


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