ERONT SUSPENSION
AND
STEERING
Remove cover and joint washer after
withdrawing the setscrews of the steer-
ing box cover. Allow the oil to drain
away.
Withdraw the rocker shaft whilst pro-
tecting the rocker shaft oil seal with a
thin
cylinder of shim steel.
Remove the setscrews and lock washers
securing the end cover to the steering
box, followed by the shims and joint
washer.
The lower bearing race and ball cage
can
now be removed allowing the
cam
to be withdrawn, together with the
upper ball cage and rubber rings
attached to the inner column.
The split felt bush situated in the top
of the outer case can now be with-
drawn.
The upper bearing race
can
be drifted
out from the steering box.
Drift out the bearing bush and oil seal
of the rocker shaft.
TO ASSEMBLE STEERING
UNIT
(a)
Feed the rocker shaft bearing bush into
the outer column and box assembly and
press into position.
(b)
Slide the trunnion bracket into position
on the rocker shaft housing. The
chassis mounting points should point
forward and downward. The two
bolts should be tightened just suffi-
ciently to keep the bracket in position
at this juncture.
(c)
Fit the upper ball race to the steering
box. Feed the inner column with the
rubber rings and ball cage in position
into the box.
(d) Place the second
ball
cage in position
on the lower bearing face of the
cam
followed by the race.
(e)
Locate a fresh joint washer together
with the old shim pack on the end
cover and
fit
to the steering box,
utilising four bolts and lock washers.
12.
(f
)
Check for end float. See "Adjustment
of Steering Box," page
16.
All
float
must be eliminated but asmall amount
of pre-loading is permitted. End float
is adjusted by the removal or addition
of
shims
interposed between the steer-
ing box and the end cover. Their
removal decreases the end float whilst
the addition of these shims increases
the end float.
(g) Press the oil seal into the lower extrem-
ities of the rocker shaft body.
(h) Feed the rocker shaft into its bore
through the top of the steering box
and allow the conical pin to settle in
the groove of the
cam.
Whilst this shaft is being fitted it is
essential that the oil seal lip is protected
from damage, otherwise oil leaks will
result.
(i)
Withdraw the adjusting screw in the
top cover to ensure that its shank does
not bear down on to the rocker shaft
lever when the cover is secured to the
unit. Secure cover with three setscrews
and lock washers, utilising a new joint
washer.
(j)
Ensure that the mounting bracket is
in
position as described in operation
(b),
for this cannot be fitted when the drop
arm is attached to the rocker shafi.
Position the drop arm on the splined
rocker shaft so that the scribe lines
align
;
secure with nut and lock plate,
the edge of the latter is turned up to
secure nut and drop arm.
(k)
Having removed
all
end float as
described in operation
(f)
adjust the
depth of engagement of the rocker shaft
and the
cam
by means of the screw
mounted in the top cover. The screw
is turned clockwise to increase the
depth of engagement or anti-clockwise
to reduce the depth. The engagement
is said to be correct when slight resis-
tance is felt when the rocker shaft
is
in
the straight ahead position.
(l)
Fit the graphite impregnated bush to
the upper end of the outer column.
The steering wheel securing nut is
loosely attached to the inner column
for safe keeping.
REMOVAL
AND
REPLACEMENT
OF
DROP
ARM
It
should be noted
that
it is
not possible
to remove the drop
arm
of
the
steering
unit without first removing the unit
from the car. This sequence is covered
under "To remove Steering Unit," page 17.
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