International Harvester Company TD-24 Operator's Manual page 18

OPERATION
'BEFORE STARTING A NEW TRACTOR - Continued
clean water. Use soft or rain water and rust
preventive if possible. Be sure radiator cap
IS
on tight.
3. Check the tension of the fan belts.
The tension is correct when the belts can be
depressed by the thumb 3/4 to 1 inch, mid-
way between the pulleys. If the tension is not
co r r e.ct, adjust (page 57).
4. If the tractor is to be operated in
freezing temperatures, refer to "COLD
WEATHER OPERATION" on page 25.
5. For fUrther information refer to
"COOLING S YSTEM" on pages 55 to 58.
Electrical System
1. Be sure the terminals are clean and
bright on the 2 disconnected battery cables at
the starting motor. Connect the' short cable
(negative) to the starting motor and the longer
cable (positive)
.to
the solenoid.
2. Check to see that the distributor is
securely mounted in place and was not dam-
Illust. 12
Battery cables connected to starting
motor and solenoid.
aged or cracked in shipment. Check the spark
plug cable s to make sure they are securely
connected in the distributor cap and at each
spark plug.
3. Check to see that all electrical termi-
nals are clean and securely fastened.
4. Service the batteries as instructed on
the tag attached. Check the level and specific
gravity of the electrolyte in the batteries
(pa~e 82).
5. POLARIZING THE GENERATOR. Do
not start the engine until the generator has
been polarized. After all cables and wires
have been connected, correctly polarize the
generator to the batteries by placing a jump-
er lead momentarily across the
II
BAT" and
"GEN" terminals of the regulator. This
allows a momentary surge of current to flow
through the generator and to polarize it cor-
rectly. Failure to do this may result in severe
damage to equipment, since reversed gener-
ator polarity can cause the relay contact '
points to vibrate, arc and burn, can run the
battery down, and possibly can seriously
damage the generator.
Illust. 13
Polarizing the generator.
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