PRIMARY
DRIVE
SECTION
C6
REFITTING
THE
CLUTCH
COVER
(For
removal,
see
Section C7)
C
Check
that
the
oil seal
In
the
centre
of
the
cover
Is
not
cut,
or
otherwise
damaged.
If
It
Is
necessary
to
renew
the
seal, drive It
auc
using a
shouldered
drift.
and tap
the
new
seal Into position, lip
towards
the
gearbox, and level with
the
outer
boss
of
the
cover.
Ensure
that the
Joint
surfaces are clean,
and
tap
the
dutch
gently home
to
the
crankcase with a hide
hammer, until the spigot on
the
cover locates
In
the
crankcase recess. Fit and tighten
up
the
three
screws.
SECTION
C7
DISMANTLING
THE
PRIMARY
DRIVE
(To
gain
access
to
the
clutch)
Before commencing operations, engage a gear
as
an
aid
to
releasing various nuts.
Remove
the
outer
primary chalnscase and associated fittings (See
Section
CS)
and collect
the
needle
roller
thrust
bearing from
the
centre
of
the
chainwheel.
Note
the
order
of
bearings and washers. Remove
the
gearshift
quadrant
from
the
crosshaft, following
release
of
the
self locking
nut.
Straighten
the
washer which secures
the
engine sprocket nut,
and remove this, using a
tabular
wrench,
tommy
bar and hammer.
There
Is
no tab
washer
under
the
chainwheel
nut,
but
before
attempting
removal,
cover
the
threads
of
the
clutch pull
rod
with a
strip of sellotape,
to
prvenec
damage
to
the
oil
seal on removal. Both
sprockets
are
then
ready
for withdrawal.
Note
that
the
sprockets
and
primary chain must be removed
as
a
set,
because
the
chain
Is
"endless"
I.E'.
It
is
not
fitted with a
connecting link, and
hence
cannot
be removed
independently (See
Section
Cn).
Carefully
preserve
the
shims
removed
from behind the
engine
sprocket.
Straighten
the
tab washer and remove the nut
holding the oil pump drive gear
to
the
pump
spindle. Take off
the
gear which
is
located
on
a
taper diameter,
and
will require
the
use of un-
Iversal
extractor
set 61·3808. The outrigger
bearing for the cross shaft must
next
be dis-
mantled. Straighten the
tab
washer
and
unscrew
the two
set
pins which will release
the
bearing,
spacing sleeve,
and
locating plate,
all
of
which
can
be then withdrawn. Do
not
disturb
the
pinion
on
the crankshaft,
but
draw ttie Intermediate
Idler gear off Its spindle.
Remove the long
bol.ts
securing
the
inner
chain
case
to the crankcase, together wlth·all
the
screws,
when the chaincase
is
free
to
be removed. The
dutch
Is
now exposed. This
is
a sliding fit
on
the
splines of
the
dutch hub, and
can
be withdrawn
complete with
pull
rod.
.
,
..
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