G
TIlE
PROPELLER
SHAFT---
---
Section
6.4
DISMANTLING THE
PR.OPELLER.
SHAFT
Unscrew
the
dust
cap at
the
rear
end of
the
sliding
[oint and pull
the
joint
off
the
splined shaft. Remove
the
enamel and
dirt
from
the
snap rings and bearing
races. Remove
all
the
snap rings by pinching
their
ears
together
with
a pair
of
thin-nosed pliers and
prising
them
out
with a screwdriver.
Ifa ring does
not
slide
out
of
its
groove
readily,
tap
the
end
of
the
bearing race slightly
to
relieve
the
pressure
against
the
ring. Holding
the
joint
in
one
hand
with
the
splined sleeve yoke on
the
top,
tap
the
radius
of
the
yoke lightly
with
a
copper
hammer.
The
bearing should begin
to
emerge;
turn
the
joint
over
Fig.
G.!.
Where
to
apply light blows
to
the
yoke
in
the
first
stage of dismantling
the
unlve rsal ioint
after
removing
the
retalning elrcllp.
and finally remove
the
bearlng with
the
fingers. If
necessary,
tap
the
bearing race from inside
with
a
small-
diameter
bar, taking care
not
to
damage
the
bearing
face.
or
gri p
the
need Ie bearing race in a vice and tap
the
flange yoke
dear.
Be
sure
to
hold
the
bearing in a vertical position,
and when
free
remove
the
race from
the
bottom
side
to
avoid droppIng
the
need Ie rollers.
Repeat thls
operation
for
the
opposite
bearing.
The
splined sleeve yoke can now be removed. Rest
the
two
exposed
trunnions
on
wood
or
lead blocks to
protect
their
ground
surfaces, and
tap
the
top
lug of
the
flange yoke
to
remove
the
bearing race.
Turn
the
yoke
over
and
repeat
the
operation.
G.2
Section
G.5
TO EXAMINE
AND
CHECK FOR
WEAR
The
parts
most
likely
to
show signs of
wear
after
long usage are
the
bearing races and
the
spider
jour-
nals. Should looseness, load markings,
or
dIstortion
Fig. G.2.
Showi ng
the
man
ner
of
withd
rawing
the
need Ie beari ng
after
it has
been
partly
withdrawn.
When
bearings
are
removed
or
replaced
they
shou Id be held vertically
to
prevent
the
needle bearings from being displaced.
Fig.
GJ.
When
the
needle
roller
bearings have
been
withdrawn
from
opposite
sides of
the
spider
the
joint
can be
separated
as
shown.
be
observed,
the
affected
part
must
be
renewed
complete, since no oversIzed journals
or
bearing races
are
provided.
It is essential
that
the
bearing races
are
a light drive
fit in
the
yoke
trunnions.
In
the
event
of
wear
taking
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