ROAD SPRINGS
AND
SHOCK ABSORBERS
FRONT
SPRING
I.
DESCRIPTION
The low periodicity coil spring used in the
front suspension of this car is illustrated in
Fig.
1.
This illustration also gives the data
of both the normal road spring and the
competition spring. This competition
spring
can
easily be distinguished from the
normal
type,
for it has a left-hand helix.
Damping action is provided by a direct
acting telescopic type shock absorber,
mounted centrally through the coil spring.
Very
little maintenance should be required
dumg the lifetime of the car. There is no
lubrication required, and the only possible
maintenance would be to replace the rubber
washers, or to check the spring against the
data
given in Fig.
1.
3.
TO REMOVE OR
REPLACE
These operations are fully covered in the
"Front Suspension, Section
G"
of this
manual.
REAR
ROAD SPRINGS
I.
DESCRIPTION
(Fig.
2)
Semi-elliptical laminated springs are used
which have their location point with the
axle below and forward of the centre, so
that the longer end of each spring is fitted
toward the rear of the
car.
The forward
fulcrum
of the spring has a
silentbloc bush and is mounted on a bolt
rotruding from the outer side of the chassis
Le. The attachment is completed by
a
"C"
washer and split pinned castellated nut.
The rear
fulcrum
is a shackle assembly
utilising split rubber bushes interposed
been the pins, the spring or the chassis
frame. The attachment is completed by nuts
and
lock washers situated between the spring
and the chassis We.
L
MAINTENANCE
The only lubrication required is that for the
spring leaves, on no account must the
rubber or silentbloc bushes be lubricated.
Over
lubrication of the spring leaves should
be avoided. After the springs have
been
cleaned, brush the blades at their edges
with engine oil, this
will
allow sufficient
oil to penetrate between the leaves and
provide inter-leaf lubrication.
Lubrication of spring blades is chiefly
required at the ends of the leaves where one
presses upon the next and where the maxi-
mum relative motion occurs.
The clips should be inspected and any loose-
ness corrected by pinching the "ears" closer
to the spring. Failure to keep these clips
tight often causes "knocks" at the rear of
the car.
3.
TO REMOVE REAR ROAD SPRING
(a)
Jack up the body at the rear of the car
sufficiently to take the weight off the
road spring.
(b)
Remove the rear wing stay situated
behind the rear wheel between the
chassis and wing itself.
(c)
Holding the hexagon of the shock
absorber-link remove the nyloc attach-
ment nut.
(d)
Remove the two nutsand lock washers,
followed by the plate of the shackle
assembly at the rear end of the spring.
Withdraw the plate and pin assembly
and collect the rubber bushes from the
spring eye and the chassis bracket.
(e)
Screw a
6"
X
24
UNF bolt into the
head of the forward
fulcrum
bolt to a
depth of
$".
Withdraw the split pin to
remove nut and "D" washer. Utilising
a lever under the head of the
h"
UNF
bolt, the
fulcrum
bolt
can
now be
withdrawn from the spring and chassis
frame.
(f)
Supporting the spring by a small jack
remove the four nyloc nuts of the two
"U"
bolts attaching the spring to the
axle, remove the
"U"
bolts and the
spring plate from the shock absorber
M.
(g)
The road spring and the supporting
jack is now removed from under the
car
to a bench.
(h)
The silentbloc bush
can
now
be
re-
moved from the forward eye of
the
spring.
To Next Page
Loading...
