Bentley R Type - Throttle Control

5o
TnB
'R'
TypB Bnr.Irrpy.
Air
valve
cylinder.
Oil cap
nut.
Hydraulic
damper piston.
Piston
guide
rod.
Suction
disc.
Piston,
air
valve.
7.
Needle
valve.
8.
Fuel
inlet
and filter.
9. Float
chamber.
10.
Cap
nut.
11.
Mixture
adjustment
screw.
12.
Throttle
valve.
If
the above treat-
ment does
not effect
a
cure, the fault
may
be
due to
a
bent
jet
needle or alter-
natively to
the
needle
fouling
the
jet.
If
this
is
suspected, it
is
recommended
that
communication
is
made with
Messrs.
BentleyMotors
(rgSr
)
Ltd.,
or
one of
their
"Special
Retailers".
The
needle
valve
is
secured
in
position
by means
of a
grub
screw, and if it
should
be
necessary
to
remove
this,
0s,
for
instance,
when
re-
placing
an accident-
ally
damaged
needle,
it
must
be particular-
ly
noticed
that the
location
of
the
valve
is
determined
by a
shoulder.
The
valve
should
be
pushed
into
the
piston
until
this shoulder is
just
flush
with
the lower
face
and
the
grub
screw
tightened.
Xb-to
Fig.
14.-CARBURETTER-EXpLODED
VtEW.
1.
2.
3.
4.
5.
6.
If
a needle
should
be
accidentally
darnaged,
a
new
one
must be
obtained
from
either
Messrs.
Bentley
lVlotori
(iqst)
Ltd.,
or
one of
their "Special
Retailers".
Code letiers
ar"
st)rm"p.d
on the
end
of
the needle,
denoting
the
needle
characteristics,
and
it
is
essential
that
only
one of
the
same
coding
is
fitted.
Throttle
Gontrol.
.
The
gyantity
of
mixture
for
slow
running
is determine,il
by
means
of
.T $igstaule
screw
stop
on
the
front
"carburetter
(b,
fis.
19)
which. limits
the
closing
movement
of both
throttles.
'
This" is
16
adjusted
that
the
engine
will
idle
slowly
but
reliably
when
the
accelerator pedal
is
released.
no
hand
contiol being
provided.