Bentley R Type - Page 99

94
Tue
'R'
TvpB BBurrBv.
Another
method is
to
use the
starting
handle to turn
the en-
gine,
which
obviates the
need for
removing the
bell-housing
cover. It
must be
remembered
that
the
starting
handle
operates
through the
friction
damped
spring
drive
unit,
and
there-
fore
allowance
must
be
made
for
the wind-up
of
the
spring drive unit.
If
it is
decided
to use
this
method,
the timing
should
be set .3oo"
late
of the
lGN.
TDC.
Fie. 44.-INTERIOR
OF
CONTACT
BREAKER.
1 and
2.
Rocker
Arms.
7
and 8.
Synchronising Adjustment.
3 and 4. Locking
Screws.
9 and 10.
Pivot Pins.
5
and 6.
Adjusting
Screws.
11. Cam.
12. Felt
Wick.
mark
on
the
periphery
of
the
flywheel.
The contact
breaker
should
now
be
adjusted
by
rotating
in
an anti-clockwise
direction,
so
that the
cam is
just
on
the point
of causing
the contact
break
when
revolving in
the normal
direction, while
at
the same
time the high-tension
rotor
is opposite
No.
r
distributor
contact,
the rotor
being
in
the fully retarded
position.
A convenient
method
of
determining
precisely
when
the
break
takes place
is
by
reference
to the
ammeter.
With
the ignition
switched
on,
and someone
watching
the
ammetei,
the engine
shoutd
be rotated
until
the
required
cam
just
breaks
the
contacts,
as indicated
by
the reading
of the ammeter.
The distributor
head
se-
curing screw should
then be
securely
tightened.
Fie.
45.-lGNlTlON ColL.
f. Coil.
2.
Suppressor condenser.