full 360 degree area of
the nut can be view-
ed. Uncoated or
coated nuts will show
a grainy textured sur-
face created by the
corrosion attack.
f. Replace nut if the
corrosion is con-
tinuous around the
full 360 degrees of
rotation, (Refer to il-
lustration.)
g. If there are only
local, intermittent
spots of corrosion
around the full 360
degrees of rotation,
the engine should be
continued in service.
(Refer to illustration.)
h. Repetitive com-
pliance is required at
90 day intervals for
each engine in-
corporating an accep-
table uncoated or
coated coupling nut.
Change 8 4 -5/ (4-6 blank)
