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ELECTRICAL SYSTEM
MOTOR-GENERATOR
Removing and Replacing the Motor-Generator Belt
The motor-generator
(12-volt,
negative
ground)
will function
as a cranking
motor
when
the ignition
key is turned
to the "START"
position,
driving
the engine
by means
of a
belt.
When
the
engine
is
operating,
the
unit
will
function
as
a generator.
Replace
the
motor-generator
belt
when
it
becomes
badly
worn.
To remove
the
old
belt,
loosen
the
motor-generator
brace
bolt
"A"
and
mounting
bolts
"B",
Illust. 17.
Move
the
gener-
ator
in toward
the
engine
and
slip
the
old
belt
off the
pulleys
and
over
the
crankshaft.
Install
the
new
belt
in the
reverse
order
of removal
and
adjust
the
belt
to the
proper
tension.
MOTOR-GENERATOR
BELT
Check
the tension
of the motor-generator
belt
after
the first
10 hours
of operation
and
every
50 hours
of operation
thereafter.
The
tension
is correct
when
the belt
can be
deflected
a maximum
of 1/4-inch
by a ten
pound
force
applied
midway
between
the two
pulleys.
Affow _/_ inch
VOLTAGE REGULATOR
A satisfactory
generator
charging
rate
is
maintained
by the voltage
regulator.
If the
regulator
fails
to operate
correctly,
see your
International
Harvester
dealer.
Note: Never
place
a jumper
lead
between,
or accidentally
bridge,
the "BAT"
terminal
and the "F"
terminal
on the regulator,
as this
will
damage
the regulator.
LIGHTS
The
headlights
are
sealed-beam
lights.
The
parts
are
so
constructed
that
the
filament,
re-
flector,
and
lens
are
all
assembled
in
a unit
permanently
sealed
against
dirt,
moisture,
and
corrosion.
If a filament
burns
out
or
a
lens
breaks,
the
complete
unit
must
be
re-
placed.
Refer
to "SPECIFICATIONS".
II_
_6
Correc_
motor*generator
be_ )e_iQ_.
Also
follow
this
procedure
when
a new
belt
is installed.
Adjusting the Motor-Generator Belt
Loosen
the
motor-generator
brace
bolt
"A"
and
mounting
bolts
"B",
Illust. 17.
Move
the
generator
away
from
the
engine
until
the
tension
on
the
belt
is
correct,
See
Illust.
16.
Note:
Under
no circumstances
should
a pry
bar.be
used
on the
motor-generator
to obtain
belt
tension
as
damage
to the
bearings
will
r e sult.
Tighten
mounting
bolts
"B"
and
brace
bolt
flAIl
TAILLIGHT
To replace
the taillight
lamp,
remove
the
lens
from
the
taillight
and
replace
the taillight
lamp
with
a 4 candle
power
lamp.
Refer
to
"SPECIFICATIONS".
16
FUSE (Electric Lighting)
It
is
important
to
use
the
same
capacity
fuse
for
replacement.
Refer
to
"Specifica-
tions".
If the
lights
fail,
check
the
fuse.
If a
fuse
continually
burns
out,
check
the
electri-
cal
wiring
for
short
circuits.
The fuse is located in a fuse housing
in the
!ine at the back of the instrument
panel.
See
Illust. 18.
To
install
a new
fuse,
press
in
on
the
fuse
housing
cap
and
turn
counterclockwise
to re-
move
it from
the
fuse
housing.
Remove
the
old
fuse
and
replace
it with
a new
one.
Then
re-
assemble
the
cap
to the
housing.
Remove
the
battery
if
necessary
to
reach
the
fuse.
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