Before
the
rnainshaft can be removed
it
is necessary
to
extract
the
journal bearing from its housing, using
a
suitable
drift
for
this pu rpose,
The
mainshaft assembly can
then
be
withdrawn
from
the
gearbox
as shown in Fig. F.3.
Extract
the
layshaft gear unit. observing
that
the
tabs
on
the
thrust
pads line up with
the
slots
cut
in
the
boss at
the
front
and
rear
walls of
the
gearbox.
Section
F.3
TO
DISMANTLE THE MAINSHAFT
Withdraw
the
top
and
third
gear
synchromesh hub
from
the
forward
end of
the
shaft. observing
that
the
plain side of
the
hub goes
to
the
rear
of
the
gearbox.
__
THE
GE1\RUOX F
care
must
be exercised
not
to
lose
the
spring
and
plunger
or
the
twenty-eight
needle bearings. (See
Fig.
FA.) And it must be noted
that
next
to
the
second
gear
collar is a
thrust
washer, which is in
two
halves.
having
tongues
which engage with slots in
the
forward
face of
the
collar. It is
important
that
this
washer
is
correctly
replaced on reassem bly
to
centralise
the
collar,
Section
....4
DISMANTLING THE SYNCHROMESH
MECHANISM
The
striking dogs for
top.
third
and second gears
are
retained on sliding hubs by balls and springs which
THIRD
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"111
Remove
the
third
speed
gear
collar by pressing
<lawn
the
spring-loaded locking plunger and
rotating
"the collar until
the
female splines register with
the
male splines on
the
mainshaft (see Fig. FA).
The
third
gear
can now be
withdrawn.
Care
must be exercised
to
prevent
the
loss of
the
plunger
and spring
or
the
thirty-two
needle bearings
on
which
the
third
gear
is
mounted.
Extract
the
circlip from
the
rear
end of
the
main-
shaft
and remove
the
first and second
gear
synchro-
mesh
hub;
the
conical lining
end
of
the
hub faces
to
the
front
of
the
gearbox.
The
withdrawal of
the
second gear from
the
main-
shaft
is
executed
in a similar
manner
to
that
for
the
third
gear, namely by pressing down
the
locking
plunger
through
the
hole provided and rotating
the
collar until
the
two
sets of splines coincide. Again,
Fig. F.5.
ShowinZ
the
spring-loaded locating plunger for
the
third gear.
F,3
Wishvilles Classic
Automobile Library
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