Rolls-Royce Silver Shadow
&
Bentley
T
Series
Workshop
Manual
Ignition warning lamp-Choke relay
(if fitted)
The relay is renewed in
a
siniilar manner to that
described for the previous relay.
Relay box-To remove
1.
To remove the relay box in order to renew one
or more relays, proceed as follows
2.
Disconnect the battery
3.
Remove the windscreen washer bottle and cradle
from the engine compartment.
4.
Remove the two vertical screws and the two
horizontal screws which secure the box to the bulk-
head
5.
Draw the relay box forward sufficiently to
enable the clip, securing the loom, to be removed
from its location on the bulkhead; raise the box
sufficiently to enable the loom sockets to be
disconnected from the printed circuit base.
6.
Remove the relay box assembly from the car.
7.
Unscrew and remove the four screws securing
the printed circuit base and carefully invert the base
to gain access to the relays
Note
All relays have the terminals disposed
at differing positions, making it impos-
sible to fit a relay in an incorrect
position, or to fit the correct relay the
wrong way round.
Relay--To test
A simple test may be carried out on any model
6
RA
relay as follows.
1.
One method of checking for a faulty relay is by
substituting for a relay known to be in good con-
dition.
2.
Another simple test is to connect the relay
winding to a D.C supply capable of being varied
between Zero and 15 Volts, as indicated on a
first-
grade moving coil Zero to
20,
volts Voltmeter
3.
A test lamp can be used to indicate contact
opening and closing.
Printed circuit-To renew
To renew a faulty printed circuit, remove the relay
box from the car as described in Relay box
-
To
remove; then disconnect the looms and remove all
the relays.
1.
Remove the printed circuit by removing the
four securing nuts and bolts; to fit a new printed
circuit reverse the procedure given for removal.
2.
Check all relays prior to fitting to the printed
circuit, ensuring that the layer of
'
Leatheroid' in-
sulator is fitted between the relays and printed
Chapter
M
circuit base, otherwise the exposed metallic parts of
the circuit will contact the metal outer shell of the
relays, causing a
short(s) in the circuits.
Relay box-To fit
Reverse the procedure given for removal, noting the
following point
1.
Clip the loom to the bulkhead behind the relay
box.
Relays-Electrically operated seats
Four
'
Lucas'
6
RA relays are incorporated in the
circuit for the electrically operated front seats. They
are situated between the front seats and are
identified by the markings
6
RA and the number
33270
stamped on the outer shell, and by the
terminal markings
'
C2',
'
CS',
'
W1' and
'
W2'
(see
Fig.
M64).
Seat relays-To renew
The relays are sealed units and if a failure occurs,
the faulty relay should be renewed.
For access to the printed circuit into which the
relays fit, proceed as follows.
1. Disconnect the battery.
2.
If the stowage compartment/occasional seat is
in the raised (seat) position between the front two
seats, lower the occasional seat into the stowage
compartment position.
3.
Remove the two
'
Philips' headed screws
securing the front trim panel. Lift from its support,
then remove from the car.
4.
The four relays will now be exposed. To
facilitate relay removal, disconnect one or two of
the cables above and adjacent to the relays; these
should be fitted in their original positions.
Note
It is important that the
'
Leatheroid'
insulator is fitted between the four
relays and the printed circuit, otherwise
electrical shorting will result.
Relays-To renew
Cars after Car Serial Number
6000
1.
Disconnect the battery.
2.
Remove the left-hand triangular trim pad from
the console.
3.
The relay board is adjacent to the left-hand
side of the console together with the printed
circuit.
4
Carefully remove the relays from the board by
pulling from their sockets; note the position to
facilitate fitting
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