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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.
Bent Shafting. Approval by
the appropriate authority
should be obtained prior to
straightening severely bent
shafting. Repair to the
shafting sections can be done
by the spot heating method,
after which the shaft is
straightened by mechanically
controlled forces.
d. Cracks In Shafting. Cracks
found in propulsion shafting
should be thoroughly probed to
determine the depth and length
of the cracks. If shafting is
determined to be repairable,
weld crack by an approved
method.
e. Eccentricity. The dial
indicator runout for any
length of shafting, with
respect to the axis of rota-
tion and exclusive of journals
and ends, should be limited
to an eccentricity of approx-
imately 0.003 inch. If, when
the shafting is rotated 360
degrees, runouts greater than
this figure are found, this
eccentricity should be
reduced to the lowest possible
limit. A record should be
kept of all installed shafting
where eccentricities exceed
0.003 inch. Shafting should
be replaced if objectionable
vibration is still present.
6-185
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