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PART
13-1-GENERAL CHARGING SYSTEM SERVICE
13-3
-::r
-,-
+
-+-
r
FIG. 2- Lucas Charging Circuit 14 AC Shown.
.
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I
H
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l_ __________
l
FIG.·
3- Bosch Charging System
PRECAUTIONS TO TAKE ON
ALTERNATOR EQUIPPED
VEHICLES
1. Polarity and Connections. The
alternator is for use on negative
earth electrical systems
only.
Polarity
cannot be reversed by
'Flashing'
the
field terminals as with the dynamo
and any attempt to do so will damage
the alternator.
2. Refitting Vehicle Battery. Re-
versed battery connections will dam-
age the alternator rectifiers. When
refitting, first fit the positive
+
connector to the battery positive
+
terminal and then fit the negative
-
connector to the negative
-
battery
terminal.
3. High Rate Battery Charging.
Advisable to first disconnect the
battery negative cable thus isolating
the alternator from the battery and
external charging equipment.
4. Battery
Connections.
The
battery must never be disco!}nected
while the engine is running or damage
may occur to the rectifier and/or
control box semi-conductor
devices.
For this reason the practice of using
a slave battery to start the engine
and subsequently reconnecting the
original battery whilst the engine
is
running must not be
attempted.
It
is
likewise inadvisable to break or make
any other connections in the alterna-
tor circuit while the engine
is
running.
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