Bentley R Type - Starter Motor Switch; Use of Starter Motor

96
TnB
'R'
TvpB
BBNtrsv.
Ordinarily,
the
brushes
will last a
long time.
In the
event of
replace-
ments
being
necessary,
application
should
be
made
to Messrs.
Bentley
Motors
(rgEr) Ltd.,
or
one of their
"Special Retailers".
The
fitting
of new brushes
requires expert
knowledge
and
care,
and emphasis
is laid
on this
point,
as
cases
have
arisen
of
faulty
operation
of the
motor, due to the
inexpert
fitting
of
brushes.
When
replacing
the starter
motor
in the chassis,
it is
important
to
be
sure
that
a-clean
and sound electrical
connection
of cable to
motor
is
re-obtained,
owing to the heavy
current
which
this
has to
carry.
Stanter Motor
Switchl
The
main starter switch
is
mounted
on the
front of the dashboard,
and is
relay-operated.
Closing
of
the
push-brrtton
switch
on the
instru-
ment
panel
energises
an
electric
magnet, whichcloses
the main
contacts.
No attention shogld be
necessary
to
the
switch
between
general
overhauls of the chassis.
M icro-Switch.
Situated
at
the base of
the
steering
column, the unit
incorporates
two
switches
actuated
by
the
gear
change
column
control lever (see
Fig.
25).
One
switch
is connected in
the
starter
motor circuit
(4,
Fig.
25),
and
is closed only
when
the
hand control lever
is
ip
neutral.
This
en-
sures that the engine can only
be started up
in neutral.
The
second
switch
(5)
is
the
reversing light
switch, and
is closed
when the
hand
control lever is in reverse.
Use of Starter
Motonr
Careless
use of the
starter
will
reduce the
life
of the
battery,
whereas careful
use will
make very
iittle difference
to that life.
That
is
to say,
the heavy
motor current is
not
detrimental
to
a
healthy,
charged battery-it only
becomes
detrimental to
a cell which
for any
reason
is
low in
charge, density
or voltage.
Several
dozen starts
may be
made
oR
a fully-charged
'battery
without
detriment.
On
the contrary,
it
is very important,
if the
engine
does not start
reasonably
quickly,
to
look for
the cause rather
than
to continue
to
use
up the
battery
output,
with the
risk
of
damage
to one
or
more
cells,
remembering
that the battery may not
always
be fully charged
at the time.
If
the
starter
appears
to be
sluggish
in its action,
and
such
sluggish-
ness is
traceable to the battery,
no further attempt
should
be
made
to
use
the starter
until
the battery
has been duly
inspected
and
fully
charged from
an
external
source.