Ignition System - International Harvester Company TD-14A Operator's Manual

MAINTENANCE
The adjustment is normally set with the
timing indicator "F"(Illust. 50) on the center
mark of the graduations of
the'
pump gear. To
be sure of the best operating conditions the
indicator can be tried on either side of the
center mark and set at the best operating po-
sition.
To change the location of the indicator,
loosen the cap screws "A" (Illust. 50)which
hold the indicator and gear hub to the gear.
Turn the gear hub until the indicator is at
the desired position; then tighten the cap
screws.
To advance the time of fuel injection,
turn the gear hub clockwise. To retard the
fuel injection, turn the hub counterclockwise.
The correct adjustment has been obtained when
the engine speed is maximum for a fixed load
and engine operation is smooth with a clean
exhaust.
Venting Air from the Fuel System
If the fuel filter has been drained, if the
fuel pipes have been disconnected, or if air
has entered the system for any reason, it will
be necessary to vent the system before the
engine will operate properly on the diesel
cycle. To remove the air, it·is necessary to
vent' the system as described on page 4.8.
Storage of Diesel Fuel
A permanent storage tank is the best
means of storing diesel fuel. The sediment
and water from the fuel can easily be drained
from the storage tank through a trap provided
for this purpose. The fuel can be pumped
from the storage tank into the tractor with a
minimum of handling.
If conditions require the use of drums for
fuel storage, they should be placed under
cover.
If the drums are left exposed to the
elements, piace the drums on their sides. It
is best to draw the fuel from the drums with
a pump, rather than from a faucet, as the
water and foreign matter from the fuel settles
to the bottom of the drum. The suction pipe
of the pump should be at least three inches
from the bottom of the drum or storage tank.
It is advisable not to disturb the drums after
the fuel has settled.
The last three inches of fuel in the storage
tank or drums should not be used. Collect
such fuel into one container and allow it to
,$ettle again. In this manner, the sediment
and water can be separated from the fuel, and
disposed of
with
no loss of fuel.
IGNITION SYSTEM
The ignition system is used only for start-
ing the engine on the gasoline cycle. The ig-
nition system consists of a cut-out switch
and cable, located in the lower front end of the
intake manifold assembly, a high-tension mag-
neto mounted on the right side of the engine,
and a spark plug and cable for each cylinder.
Magneto
The magneto is mounted to a bracket on
the right side of the crankcase. An impulse
coupling on the drive end of the magneto pro-
vides a hot spark to facilitate easy starting at
hand-cranking speed. The breaker point and
distributor assembly are built into the rear
of the magneto. The magneto is permanently
engaged; when the engine is switched over
to diesel operation, a cut-out switch auto-
matically grounds the magneto.
LUBRICATING THE MAGNETO
Every week, or after every 60 hours of op-
eration, oil the impulse coupling liberally with
a light electric motor oil or SAE-IOW. Use
kerosene when the temperature is below 10
0
F.
After every 480 hours of operation, fill the
distributor bearing oil cup with a light elec-
tric motor oil or SAE-l OW. Do not oil more
often as excessive oil might work into the
breaker point chamber and cause rapid point
wear.
GREASING THE BREAKER MECHANISMAND
CHECKING THE BREAKER POINTS
56
IIIust. 51
Counterclockwise rotation (viewed
from the distributor end).