CHRYSLER SERVICE MANUAL FRAME, SPRINGS
AND
SHOCK ABSORBERS—227
bar
and
moving interliner until prongs
of
metal
fasteners
are
aligned with holes
in the
shorter
leaf, as
shown
in
Figure
8.
With tapered
bar
still
in
place,
pry
prong
end
of
each metal fastener through hole
in
spring
leaf, as
shown
in
Figure
9.
Remove tapered
bar
which
has
remained
be-
tween leaves during these operations.
The bar
may
be
withdrawn while
a
screwdriver
is
placed
alongside. Then
the
screwdriver
may be
pulled
out, reversing operation which
was
used
to in-
sert
bar in
position.
A
faster method
for
with-
drawing
bar is to
insert
end of a bar
with
a
short tapered hook alongside
the
tapered
bar.
After tapered
bar has
been withdrawn,
the bar
with hook
can be
slipped
out
easily using lever-
age motion inward
on the far end of
hooked
bar.
Position wrap-around alignment clip
and
tighten retainer
nut, as
shown
in
Figures
10
and
11.
Peen
end of
bolt over
nut so it
will
not loosen.
SHOCK ABSORBER
Chrysler cars
are
equipped with double
act-
ing Oriflow shock absorbers. Oriflow shock
ab-
sorbers provide
a
smoother, steadier ride with
greater comfort
and
stability, which
is
particu-
larly noticeable
at
high speeds
or on
rolling
or
rough roads.
In the
Oriflow shock absorber,
resistance
is
built
up
slowly
at
beginning
of
stroke
so as not to
jolt passengers. This resist-
ance
is
increased
to a
maximum
at mid
stroke
and
is
tapered
off to
zero
at end of
movement.
The major part
of
dampening
is
accomplished
at high velocity mid-operation
of
stroke where
no jolt
can
originate. There
can be
little jolt
at beginning
and at end of
stroke because both
velocities
of
movement
and
resistance offered
by
the
shock absorber
are low at
those points.
This simply means that
the
piston encounters
minimum resistance
at
beginning
of
stroke
and
is gradually slowed down
by
increased resist-
ance
due to
fluid velocity through
the
orifices.
In turn, slow movement
of
piston causes fluid
velocity
to
decrease
and
offer minimum
re-
sistance
at
termination
of
stroke.
6. TESTING ORIFLOW SHOCK ABSORBERS
Oriflow shock absorbers
are
designed
to
operate
with
low
resistance when operated slowly
and
with high resistance when operated rapidly.
Since they operate with little resistance when
compressed
by
hand
or by
bench test methods,
their true operating efficiency
can be
determined
best
by a
road test.
It is
impossible
to
determine
operating efficiency
of
Oriflow shock absorbers
by rocking
the car by the
bumper.
When road testing, drive
car
over
a
fairly
rough road
to
test resistance under fast shock
absorber piston speed. Then drive over
a
fairly
smooth road
to
test resistance during slower
shock absorber piston speeds.
Hand testing Oriflow shock absorbers will
only reveal complete failure. The amount
of
ride
control evident from
a
hand test
on
bench
is
small, compared with control exerted under
actual riding conditions.
For
this reason,
it is
impossible
to
feel
any
sudden resistance
in an
Oriflow shock absorber,
no
matter
how
fast
it
is operated
by
hand.
7. SERVICING
THE
ORIFLOW SHOCK
ABSORBER
The Oriflow shock absorber cannot
be
refilled
or disassembled. Where servicing
is
required,
the shock must
be
removed
and a new
unit
in-
stalled. SHOCK ABSORBERS SHOULD ONLY
UPPER
MOUNTING
LOWER MOUNTING
ASSEMBLY
SCREW
•LOCK WASHER 55P1014
Fig.
12—Front Shock Absorber Installed
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