Checking and setting
39
Ignition system
Danger of electronic ignition systems
Safety rules
The voltages of electronic systems
are much higher than those of con-
ventional systems. As a result the
power range of electronic ignition sys-
tems is so high that contact with live
parts or terminals may be lethal (both
on the primary and secondary sides).
In this connection, attention is drawn to
the need to oberserve the VDE Regula-
tions, particularly VDE 0104/7-67 when
carrying out any work or tests on the igni-
tion system.
It is mandatory that whenever any work is
to be done on the ignition system, the
ignition system must be de-energized
(switch off ignition and / or power supply).
Such work includes:
D Connecting up engine test devices
(strobe, speed tester, ignition cables,
etc.)
D Replacing of any parts of the ignition
system (spark plug, ignition coil, distrib-
utors, ignition cables, etc.)
If testing of the ignition system or resetting
work on the engine involves energizing
the ignition system (switching on ignition
and / or power supply), the dangerous
voltage levels referred to will occur in the
complete system.
The danger of accidents therefore exists
on the individual components of the igni-
tion system (such as distributors, ignition
coil, control unit, ignition cables) as well
as on the cable harness (such as tachom-
eter connection, diagnosis plug), at con-
nectors and the test devices.
Installation of the distributor
(by authorized specialist personnel)
The engine has a separate distributor for
each bank of 6 cylinders.
The following details are for the distributor
of cylinders 1-6. If the distributor for cylin-
ders 7-12 is to be installed, the data in
brackets apply.
D Remove valve cover on cylinder No. 6,
right hand bank at flywheel end (cylin-
der No. 7 left hand bank at front end)
D Rotate engine with ring spanner 32 mm
between flats on the hexagon boss pro-
vided at the centre of the crankshaft
pulley (barring device) so that the
valves of cylinder No. 6 (cylinder 7) are
rocking. The piston in cylinder No. 1
(cylinder 12) will now be at ignition TDC
D Turn back engine until the measuring
edge of the pointer fitted to the crank-
case is pointing at the 12° mark before
TDC – cylinder 1 (12° before TDC –
cylinder 12) on the marking disc on the
front crankshaft end
D Remove distributor cap and position
rotor so that the center of the high volt-
age bridge coincides with the notch cut
into the edge of the distributor casing
To Next Page
