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G
THE PROPELLER SHAFT
Section G.S
TO
EXAMlNE
AND
CHECK
FOR
WEAR
The parts most likely to show
signs
of
wear
after long
\Jsage are the bearing races and the spider journals.
Should
looseness,
load markings,
or
distortion 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 place
in the yoke cross-holes, rendering them oval, the
yokes
must be ren<;_wed. ln case of wear in the cross-holes
in
the
fixed yoke, which
is
part of the tubular shaft assembly,
it should
normally
be replaced
by a complete tubular shaft
assembly. Only
in
the case of emergency should any
~Ucmpt
be
m
a
de
to renew
th
is
yoke.
Section G.6
REASSEMBLING THE PROPELLER
SHAFf
See
that
all the drilled holes in the journals arc
thoroughly cleaned
out
and
free
from grease. Assemble
the needle rollers
in
the
bearing races and fill with grease.
Should difficulty
be
experienced in retaining the rollers
under
control, smear the walls of the races with petroleum
jelly to
retain the needle rollers in position while
assembling.
Insert
the
spider in
the flange
yoke,
ensuring
that
the
lubricator
boss
is
fitted
a•,.ay
from the
yoke.
Using a
soft-
nosed
drift,
about
if
in. (-8
mm
.) smaller in
diameter
than the
hole
in the
yoke,
tap the bealjng into position.
It
is
esscnti;ol that
the bearing races are
a
light drive
fit
'
c
in the yoke
trunnions.
Repeat
this
operation
for
the
other three bearings.
Replace
the
circlips and be
sure
that
these are firmly
located
in
their
grooves.
If
the joint
appears
to
bind tap lightly with
a wooden mallet;
this
will
relieve
any pressure of the bearings on
the
end of
the
journals. Before replacing the sliding
joint ·on
the
shaft
thread onto the splined
shaft
the dust cover( the
steel
washer,
and the felt
washer.
When
assemljjj~~g'
the
sliding
joint be
sure
that
the
trunnions
in
the
sliding
and fixed
joints
are in
line.
T hat
is
to say,
the
axis of forked yoke
(A)
must be parallel
to that
of forked yoke (B) and the
axis of forked yoke
(c) must
be parallel to
the axis
of
forked yoke
(o)
as shown in Fig.
G.6.
This can be
cheeked
by
observing
that
the
arrows marked on the
splined
sleeve
yoke and
the splined
shaft are in
line.
It is always
advisable
to
replace the
cork gasket and
the
gasket
retainers
on
the spider journals
by
means
of
the
tubular
drift shown in
Fig.
G.5.
The
spider
journal
shoulders should be
shellacked
prior
to fitting the
retainers to
ensure a good oil
seal.
Section G.7
REPLACING THE PROPELLER SHATI
Wipe the
faces
of the
flanges
clean and place the
propeller
shaft in
position
on
the
car. Ensure
that the
flange
registers
engage
correctly
and
that
the
joint
faces
bed down evenly all round,
also
that
the
markings made
on
the flanges on removal
coincide.
Insert the
bolts and
see that
all the
nuts, which
are of the self-locking
type,
are
evenly
and
securely
tightened. The
sliding
joint
is
always p laced
at the gearbox end.
B
Fig. G.6
Whm the splinetf shaft is nssembled to
the dri••e
shaft it
is
essential to see
tlrat tire
forked
yokes on both
shafts have
hal'e
their axes
parallel to each
other.
In
other words, the yoke
(A)
must
be in
aligronent with the
yoke
(B),
and
the
flange
yoke
(c)
must
be in
alignment
with
tire
jlonge yoke
(o)
G.4
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