Bentley R Type - Wheels

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The
plug
(1)
can then be
removed
with a box-spanner,
and
the
oil
level-restored,
if
necessary, to the
bottom
of
the
plug hole,
the
oil
being
poured in very
slowly to
avoid entrapping
bubbles
of air.
It
will
be
-found
most
convenient
to
add
oil by
means
of small
syringe
provided
in the tool
kit. When
replacing the
plug, care
must be
taken
that
its
washer
is
in
position.
The
shock damper
consists
of
a
piston assembly
operating in a
cylinder
which
is
maintained
full
of oil, the
latter being displaced
fiom one
end
of
the
cylinder
to the
other, past spring-loaded
valves.
The
loading
of these valves,
and
hence the degree
of damping,
is
controllable
through
the
rJRide
Control"
lever by
means of
a
small
pump carried in a
casing
bolted to
the
gearbox,
which
maintains
a
pressure
of oil in a
system of
piping. This
pressure
is
variable,
and
is
cohtrolled
through
a relief valve,
operated
by the aforementioned
lever.
The
pump
is charged with
oil
from the
gearbox. It must be
observed
that
oil
is not actually
pumped into
the dampers,
and
there
should be
no wastage
of
oil from the
pump
unit
or pipe
line.
Such
wastage
or
leakage
will
impair the
functioning
of the
control.
As it
is of such
importance
that
the
shock dampers,
and also the
pump
and
pipe line,
should be
maintained
full of oil, evidence
of
undue
leakage
should
be
at
once reported
to
Messrs. Bentley
Motors
(rqSr) Ltd.,
or one of their
"Special
Retailers".
(See page 16.)
Rear
Road
Spnings.
The
forward ends
of
the
rear springs
are
pivoted
to
the
frame by
means of
steel bushes.
The
shackle
pins
at the
front and
rear
ends
are
of the
threaded
type,
and
both bushes
and shackle
pins are
lubricated
from the
centralised
chassis system.
The
advantage
of threaded
bearing
pins is
that
they do
not
develop
end-play
as the
result
of wear.
The
springs
themselves
are encased
in leather
gaiters
and,
b5r
means
of
a
special
arrangement
of oil holes and
grooves
in the
leaves,
the ends
of
the
three
longest leaves
of each
spring
are
lubricated
by
surplus
oil
from
the
eye
of
the
master
leaf.
Owing
to this
arrangement,
in
combination
with absorbent
material
inside the
gaiter,
the
springs
are entirely
self-lubricating
and remain
free from squeaks.
Wheels.
All wheels are
of
heavy
gauge
pressed steel,
with
16"
by
5"
well-base
rims, and
are
secured
with five
nuts.
The securing nuts
for the
"off-side" or
R.H. wheels
have right-
hand
threads,
and
those
for
the
"near-side" or
L.H. have
left-hand
threads.
The
nuts must be tightened,
with
the wheel-brace
provided,
rlvenly
and securely,
and the threads
must be
kept clean and
greased.