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ELECTRICAL SYSTEM
MOTOR-GENERATORRemoving
and Replacing the Motor-Generator Belt
Replace the motor-generator belt when it
becomes badly worn. To remove the old belt,
loosen the motor-generator brace bolt I'A" and
mounting bolt.s lIB", 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.
The motor-generator (IZ-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 abelt.
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.
Hote: Never place a jumper lead between,
or accidentally bridge, the I'BAT'I terminal
and the I'FI' 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 bxeaks, the complete unit must be re-
placed. Refer to I'SPECIFICA TIONS".
TAilliGHT
To replace the taillight lamp, remove thelens
from the taillight and replace the taillight
lamp with a 4 candle power lamp. Refer to
"SPECIFICATIONS".
FUSE (Electric Lighting)
Also follow this procedure when a new beltis
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 I'A'I
and mounting bolts IIBI', Illust.17.
Move the generator away from the engine
until the tension on the belt is correct. See
Illust. 16.
The fuse is located in a fuse housing in theline
at the back of the instrument panel. See
Illust. 18.
Note: Under no circumstances should a pry
bar.be used on the motor-generator to obtain
belt tension as damage to the bearings will
re suIt.
To install a new fuse. pre ss in on the fusehousing
cap and turn counterclockwise to re-move
it from the fuse housing. Remove the oldfuse
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 IIB'I and brace bolt
IIA II
16