Lotus TURBO ESPRIT Service Manual page 513

Page 30
INSTRUMENT BINNACLE REMOVAL
The i n s t ~ m e n t binnacle contains a centre panel housing the main instruments, and two
side panels housing the tell tale lamps, switches and volt and fuel gauges.
The side panels may be removed with the binnacle 'in s i b ' by removing the four screws
securing the centre panel
ABS
trim, followed by the single screw securing each side
panel at i t s outermost edge. Access to the fibre optic light source (switch illumination)
may be obtained after removal of the right hand side panel
.
Voltmeter and fuel gauge
illumination bulbs may also be replaced after removal of the appropriate side panel.
The Brake fail warning lamp relay may also be reached after removal of the left hand
side panel
.
For access to an instrument housed i n the centre panel, it i s necessary.fint to remove the
binnacle assembly from the fascia. After removal of the four
M6
bolts securing the
binnacle assembly to the scuttle crossbeam (accessible from beneath) the binnacle may be
raised sufficiently to enable the three wiring loom block connectors to be unplugged, the
1
speedo cable to be released, and the boost and o i l pressure gauge pipes to be disconnected.
Also release the demist vent duct from the binnacle adaptor.
LUCAS
CONSTANT ENERGY IGNITION
The Lucas constant energy ignition system is an inductive system i n which the energy
stored i n the coil i s maintained constant over
a
wide range of engine speeds, thereby
providing consistently high output voltages. The system comprises a distributor model
45 DM, and ignition coil model
32 C5,
an ignition amplifier model
AB
14 and an
electronic rev. limiter.
The distributor incorporates a variable-reluctance position transducer (pick up) to
provide a basic timing waveform. The s i ntered reluctor has four projections which
correspond i n function with the cam lobes of a conventional distributor. The pick up
comprises a coil and magnet assembly, the pick up air gap (0.20
-
0.35 mm.) being set
during manufacture and requiring no subsequent adjustment.
A
conventional type rotor arm i s fitted, moulded (as is the distributor cap) from track
retardant material. The two cables connecting the distributor to the ignition amplifier
terminate i n a non-reversible "shur plug".
The high energy coil (model
32 C5)
i s specially designed to achieve the very fast
current rise times required for
this
system. The coil requires no ballast and consumes
no current i n the stalled engine condition.
The ignition amplifier
(AB 14)
i s mounted i n t he ignition box whilst the electronic rev.
limiter unit i s fitted on the
RH
fuel tank board.