Sy/A28 - Rolls-Royce Bentley T Series Service Bulletin

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SY/A28
The fuel tank fitted to Rolls-Royce and Bentley Corniche
Convertible cars has a larger base area and is shorter
in height to allow for the hood stowage.
Both types of fuel tank are retained by metal straps. The
fuel capacity of both types of fuel tank is 18.5 Imperial
Gallons
(22.5
us
Gallons).
The fuel filler cap incorporates a combined pressure and
vacuum relief valve.
The interior trim of the left-hand rear quarter panel and
parcel shelf
is
changed to accommodate the filler neck
(this change does not apply to Rolls-Royce and Bentley
Corniche Convertible cars}.
The pipe and hose runs at the rear of the car for evaporative
loss and fuel tank venting have changed due to the .
repositioning of the fuel tank. Also, a vapour (anti-
rollover) valve is fitted into the evaporative loss line
adjacent to the.fuel tank {see
Fig.
1).
The fuel cooler is situated in the engine compartment
adjacent to the refrigeration system compressor. The fuel
cooler utilises the refrigerant of the air conditioning
system to cool the fuel before
it
enters the carburetter
float chambers (see Fig. 2).
2 FUEL SYSTEM - OTHER THAN USA AND CANADA
Devices
are
now fitted to the carburetter mixture control
and idle speed adjusting screw to discourage unnecessary
alterations to the factory settings. (see Fig. 3). This
has been introduced to comply with European legislation.
However, should
i t
become necessary to carry out any adjust-
ments the factory fitted seal (coloured black or dark blue)
will have
to
be broken and replaced after adjustment by a
new one available for service use (coloured red).
3 LUGGAGE COMPARTMENT - USA and CANADA
The space occupied by the previous fuel ·tank has been made
into an additional stowage area (see Fig. 4).
On Rolls-Royce and Bentley Corniche Convertible cars part
of this space is used to house the hood motor and fluid
reservoir.
Access to either the additional stowage area or the hood
motor and reservoir is by lifting out the cover in the
luggage compartment floor.