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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)
CAUTION
Bronze becomes weak at high temperatures and the propeller, if struck,
can sag or break. Exercise care when handling or repairing a heated
propeller.
d. Straightening the Blade.
On small propellers,
tightly rolled bends are
unrolled with blacksmith's
tongs. Other irregularities
are peened. It is advanta-
geous to peen a bend on
its concave or hollow
side. On small propellers,
strike the blade with a
light hammer while
backing the peening with
the blade on an anvil. A
typical peening operation
is shown below. Large
propellers are peened
by using air hammers with
a round edge caulking tool.
The metal unrolls like wet
6-175
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