RADIO
For operating instructions, see the radio leaflet provided with the set. The
set is protected against possible electrical damage due to a short by a
5
amp.
fuse housed in the main lead union. The aerial mast should always be
lowered when the set is not operating.
HEATER
The heater is of the re-circulating type, with a combined rheostat and
ON/OFF switch on the dash panel to regulate the speed of the fan. At
the right-hand rear end of the cylinder
head, under the bonnet, a screwed
cock can be turned to vary the amount of hot water which is to be fed
to the heater unit from nil to maximum flow. Shutters on the underside
of the heater unit control the downward flow of air from the heater into
the car. Closing the shutters will not
affect the air flow to the demister slots.
Operation
The Laycock de Normanville overdrive unit effects a reduction in overall
gear ratio by means of a train of epicyclic gears which are brought
into action by a hydraulically operated cone clutch. Movement of the
electrical switch mounted on the outside of the dash panel will bring the
overdrive into operation. To
tzke the overdrive out of operation, return
the switch to its original position. The electrical circuit is
only complete
when the gear
lever is in
the position of top gear on earlier models and top,
3rd or 2nd gears on later models. Care should be taken on the earlier models
not to move the gear lever out of the position of top gear at road speeds
in
excess of
75
m.p.h.
(120
k.p.h.), and
it
should be remembered also that if
the overdrive switch
is
made, returning the gear lever from third to top
gear will automatically re-engage the overdrive unit.
Lubrication
The oil used for both lubrication and for the hydraulic pump
is
the same
as and connected with that of the gearbox. The two units also having a
common filler orifice in the gearbox top cover. With an overdrive fitted it
is inadvisable to use
hypoid gear oils as these may be detrimental to
the
operation of the unit.
Draining
There
is
a drain plug fitted to the overdrive unit, and when draining the
gearbox it is necessary to remove both the drain plug on the gearbox and
the drain plug on the overdrive unit.
WIRE
WHEELS
Cars fitted with disc brakes have detachable hub extensions each secured by
four nuts. This should be checked occasionally for tightness and especially
after the first
500
miles from new or when replacement parts are fitted.
The correct tightness is
60-65
ft. lb.
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