Rolls- Royce Silver Shadow
B
Bentley
T
Series
Workshop Manual
Note
Although the relay terminal connections
and cable colours are identical for each
relay, it will be noted that the relay
fitted to the left-hand side of the car is
inverted for fitting.
Relay-To test
Connect the relay winding to a 12 Volt D.C. supply
in series with an ammeter and variable resistance,
and by adjusting the current flow, the relay contacts
should open
with,a minimum current of 1.5 amp
flowing through the
energising coil of the relay.
Direction indicator (flasher) unit
-To maintain
Flasher units are sealed during manufacture, there-
fore a defective unit must be renewed.
The unit is fitted to the fuse panel (distribution
board) adjacent to the steering column (see Section
M2
-
Fuse panel) and is fitted directly into the
printed circuit.
Fault diagnosis
In the event of a fault occuring in the direction
indicator system, the following procedure should be
used.
1.
Check all indicator bulbs for broken filaments.
2.
Refer to main wiring diagram and check all
indicator circuit connections.
3.
Switch on the ignition.
4.
Using a voltmeter, check that 12 Volts is
available at the flasher unit terminal marked 'B'.
Flasher unit renewal
1.
Remove from the fuse panel (see Section M2)
and fit the new unit.
Note
Flasher units must be handled with care.
Dual relay-Automatic transmission
electric actuator (Lucas
14
RA)
This is a complex unit and in the unlikely event of a
failure it must be renewed.
Reverse gear lock relay-To renew
The reverse gear lock relay is secured to the
instrument panel main support bracket by two screws.
Access to the relay is as follows.
1. Disconnect the leads from the battery, then
remove the top roll as described in Chapter
S
-
Body.
2.
Disconnect the
'
Lucar' connectors from the
relay.
3.
Remove the two screws securing the relay to
the instrument board bracket; remove
the relay from
the car.
Chapter
M
Relay-Fuel warning lamp dimming
The relay is mounted behind the facia panel and is
identified by the number
35285 stamped on its outer
shell, and by the
terminal markings
'
C2',
'
CS',
'
W1'
and
'
W2' (see Fig. M69).
Relay-To renew
This relay is a sealed unit and if found to be faulty
it must be renewed.
The relay is mounted on a bracket which, in turn,
is mounted on the instrument panel support bracket
adjacent to the reverse gear lock relay. Access to
the relay is similar to that described for the reverse
gear lock relay.
Note
If a hazard warning system is fitted to
the car, the relay incorporated in the
system occupies a similar mounting
position, sharing the same mounting
bolts.
To facilitate renewal, it is necessary to remove
the
relay(s) mounting bracket from the instrument
panel support bracket and to raise the mounting
bracket sufficiently to gain access to the faulty
relay.
Relay-To test
The procedure for testing a fuel warning lamp
dimming relay is the same as that described for other
relays. Also, the warning lamp should dim when the
sidehail lamp switch is operated.
If
this does not
occur a fault in the internal resistor is indicated.
Relay-Hazard warning lamp
This
'
Lucas' relay, mounted behind the facia panel,
is identified by the number 33231 on its outer shell,
and by the terminal markings
'
WI',
'
W2',
'
C2'
and
'
C3' (see Fig. M65).
Relay-To renew
The relay is a sealed unit and if it is found to be
faulty it must be renewed.
The relay is mounted to the bracket supporting
the fuel warning lamp dimming relay, adjacent to the
reverse gear lock relay, and shares the same
mounting screws as the dimming relay.
Access to this relay is similar to the instructions
given for the reverse gear
lock~relay.
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