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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.
Replace
the
motor-generator
belt
when
it
becomes
badly
worn.
To remove
the old
belt,
loosen
the
motor-generator
brace
bolt
"A"
and
mounting
bolt,s
"B",
1!lust. 20.
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.
When the engine is operating.
the unit will
function as a generator.
MOTOR-GENERATOR BELT
VOL TAGE REGULATOR
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.
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'I
terminal
and the IIF'I 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 "SPECIFICA TIONS't.
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".
Illust.19
Correct motor-generotor
belt tension.
FUSE (Electric
Lighting)
Also
follow
this procedure
when a new belt
is installed.
Adjusting
the Motor-Generator
Belt
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.
Loosen
the motor-generator
brace
bolt flAIland
mounting
bolts
f'B",
Illust. 20.
Move the generator
away from
the engine
until
the tension
on the belt is correct.
See
Illust. 19.
The fuse is located
in a fuse housing
in the
line
at the back of the instrument
panel.
See
Illust.21.
Note: Under
no circumstances
should a pry
bar be used on the motor -generator
to obtain
belt tension
as damage
to the bearings
will
ire suIt.
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.
Tighten
mounting
bolts
"B"
and brace
bolt
"A".
lq
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