Rolls-Royce Silver Shadow
8
Bent/ey
T
Series
Workshop
Manual
Chapter
ff
Section
N5
THE STEERING
BOX
(all
cars)
Introduction
3. Lubricate the rocking shaft bore and single lip
A higher ratio steering box is now fitted to right-hand
seal with power steering fluid.
drive
cars
having the following number and onwards.
4.
Fit the seal into the rocking shaft bore (see
Fig.
Standard cars 43154oachbuilt cars 5023.
NB)
using seal fitting tool (RH 7779).
Do
not drive
The difference in ratio is as follows:
the seal more than
4
in.
(3,18
mm.) above the lip of
Early cars 22.5
:
1-Later cars 19.3 :l.
the rocking shaft bore.
The servicing of both types of box is similar although
there are minor changes to certain internal parts. This
5. Remove the seal fitting tool and place one of the
means that some parts usually provided as matched
steel backing washers over the shaft; drive the seal a
sets are not interchangeable, although the complete
further
+
in.
(12,7
mm.) into the rocking shaft bore.
unit is
interchangeable. Always refer to the current
6.
Lubricate the double lip seal with power steering
parts list for differences and available parts.
fluid and fit over the rocking shaft.
7.
Drive the seal into the rocking shaft bore until
Steering box rocker shaft seal-
the bottom of the seal is flush with the retaining ring
To remove (steering box in position)
groove.
1. Place the car on a ramp or over a pit.
2.
Remove the pendulum lever as described in
'Steering box-To remove'.
3.
Remove the rocking shaft seal retaining ring.
4. Place a container under the steering box to catch
the steering box fluid. Start the engine and turn the
steering wheel to full right-hand lock (right-hand drive
cars) left-hand lock (left-hand drive cars); fluid pres-
sure will force the seals and backing washers out of
the steering box housing. To prevent fluid loss and
steering pump wear do not hold the steering wheel in
the full lock position for more than a few seconds at
a time. Stop the engine as soon as the seals are forced
out; inspect the seals for damage.
5.
If the outside diameter of the seal is scored inspect
the internal bore of the steering box housing for
burrs and if necessary remove them using a
fine
emery
stone.
8.
Place the other steel backing washer and the
retaining ring in the
rocking shaft bore.
9.
Drive both seals up into the rocking shaft bore
until the circlip locates in the circlip groove.
Note Do not drive the seals further than is
necessary for the circlip to engage with
the circlip groove.
Steering box-To remove
1. Place the car on a ramp or over a pit.
2. Disconnect the battery.
3. Using a syringe drain the steering pump (both
types) taking care not to damage the filter support
plate
(Hobourn Eaton pump only).
4. Remove the two flexible hoses from the upper
section of the steering box housing; blank the hose
ends and the steering box ports against the ingress of
dirt.
Steering box rocker shaft seal-TO fit
5.
On left-hand drive cars disconnect the hoses
(steering box in position)
from the two steering box extension pipes.
1.
Thoroughly wash the rocking shaft bore and
Note
A
certain amount of fluid
will
drain from
splines to remove any particles of dirt or metal.
the two hoses when they are disconnected
from the steering box.
2. Wrap one layer of tape around the rocking shaft
splines to prevent damage to the seals as they are
6.
Remove the front exhaust pipe and silencer
fitted. assembly.
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