6E-1
ENGINE
ELECTRICAL
NOTE:
Information
pertaining
to
chassis
electrical
will
be
found
in
Section
12.
CONTENTS
OF
SUBJECT
PAGE
Cranking
Circuit
6E-1
Starting
Motor
...............
6E-1
Charging
Circuit
6E-7
Generator
6E-7
CSI
Generator Regulator 6E-11
Standard
and Transistor Regulator .... 6E-13
THIS
SECTION
SUBJECT
PAGE
Ignition
Circuit
6E-13
Distributor
6-Cyl.
6E-13
Distributor
Â¥-8 6E-15
Ignition
Timing 6E-19
Ignition
and Starting Switch
........
6E-19
Spark
Plugs 6E-21
CRANKING
CIRCUIT
STARTING
MOTOR
PERIODIC
SERVICE
No periodic lubrication of the starting motor or
solenoid required. The motor and brushes cannot
be inspected without disassembling the unit, so no
service is required on the motor or solenoid between
overhaul
periods.
CHECKS
AND
ADJUSTMENTS
ON CAR
Although the starting motor cannot be checked
against specifications on the car, a check can be
made for excessive resistance in the cranking
cir-
cuit.
To check for excessive resistance in the
crank-
ing circuit, measure:
1. The
voltage
drop, during cranking, between the
positive battery
post
and battery terminal of
solenoid.
2. The
voltage
drop, during cranking, between the
battery terminal of solenoid and the motor terminal
of solenoid.
3.
The
voltage
drop, during cranking, between the
negative battery
post
and the starting motor frame.
CAUTION:
To
prevent
the
engine
from
firing
during
the
above
checks,
disconnect
the
primary
lead
to the
distributor
at the
coil.
If
the
voltage
drop for any one of the above three
checks
exceeds
0.2 volt, excessive resistance is
indicated in that portion of the cranking circuit being
checked. Locate and eliminate the cause for any
excessive
voltage
drop in
these
circuits in order to
obtain maximum efficiency of the cranking system.
When
the solenoid fails to pull in, the trouble may
be due to excessive
voltage
drop in the solenoid con-
trol
circuit. To check for this condition, close the
starting
switch and measure the
voltage
drop between
the battery terminal of the solenoid and the switch
terminal
of the solenoid. Excessive resistance in the
solenoid control circuit is indicated and should be
corrected if the
voltage
drop
exceeds
3.5 volts.
If
the
voltage
drop
does
not exceed 3.5 volts and
the solenoid
does
not pull in, measure the
voltage
available
at the switch terminal of the solenoid. If
the solenoid
does
not feel
warm,
it should pull in
whenever the
voltage
available at the switch ter-
minal
is 7.7 volts or more (when the solenoid
feels
warm,
it
will
require a somewhat higher
voltage
to
pull
in).
REMOVE
FROM
CAR-6
CYL
ENGINE
1. Disconnect battery ground cable at battery ter-
minal
post.
2. Disconnect battery positive cable and wiring
harness leads from starting motor solenoid.
3.
Remove starting motor.
REMOVE
FROM
CAi-V-8
ENGINE
1. Disconnect battery to starting motor cable from
battery post.
2. Raise front of car and place car stand under
front suspension.
3.
Pull
battery cable and solenoid wire loom down
so they hang free of surrounding parts.
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