Greasing The Distributor Gear; Magneto Impulse Coupling And Magneto Drive Chamber - International Harvester Company CUB Operator's Manual

ELECTRICAL SYSTEM
MAGNETO. Continued
Illust. 28
Magneto disassembled.
Greasing the Breaker Mechani sm and Checking the
Points. Continued
thoroughly clean and wipe dry. To assure long
life of the distributor, care must also be taken
to keep the three small ventilator holes in the
bottom of the distributor cap open at all times.
Also see that the distributor rotor is kept
clean.
Check the opening between the breaker points
(1IIust.27A.) with a feeler gauge. The point open-
ing should be .013 inch when the rubbing block
is on the high part of the cam. If the opening is
not correct, adjust it by loosening the screw
holding the adjustable point (1IIust. 27A.) and mov-
ing the point up or down until the gauge slips
snugly into the opening. After the proper ad-
justment has been made, tighten the screw.
If the distributor cap terminal nipples are
removed, be sure that the terminals and coil
cover terminals are clean and dry.
The magneto is equipped with these nipples
to prevent any external electrical leakage
when the tractor is operating under adverse
conditions.
With the engine on the top dead center of
the No. 1 firing stroke, turn the distributor
rotor until end "B" of the distributor rotor
arm points to the No. 1 terminal on tfie dis-
tributor cap. Place the distributor body on the
magneto and be sure the rotor shaft enters the
"D" shaped hole in the magneto rotor pinion.
Be sure the gasket is in place and tighten three
screws "A" (1IIust. 28). Replace the distributor cap.
Magneto Impulse Coupling and Magneto Drive Chamber
When the engine is hand-cranked, the im-
pluse coupling should trip (click) twice for
each revolution of the engine. Failure to do so
indicates the need of cleaning or service.
Greasing the Distributor Gear
Remove the magneto as described below.
Hold the magneto at an angle of approximately
45 degrees, and flush the impulse coupling and
magneto drive chamber with kerosene. During
warm weather, oil the impulse coupling lib-
erally with light oil, such as cream separator
or sewing machine oil. Do not use oil during
cold weather (below +10 degrees F.). Flushing
with kerosene is all that is required.
After every 2,000 hours of operation or at
least every year, the distributor gear and
distributor gear chamber should be cleaned and
repacked with 1H Magneto Ball Bearing Grease
(359 766 R91). We recommend this be done by
your International Harvester dealer.
Distributor Cap
If it is necessary to remove the impulse
coupling from the magneto for cleaning or
service, we recommend that this be done by
your International Harvester dealer.
Every three or four months, remove the
distributor cap and examine the inside. If any
dust, moisture or oil deposits are present,
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